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version 1.23, 2002/08/28 22:02:47
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version 1.197, 2016/04/25 23:00:58
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| # The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
| # (Publication Handler |
|
| # |
# |
| # $Id$ |
# $Id$ |
| # |
# |
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| # http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
| # |
# |
| ### |
### |
| |
|
| =pod |
=pod |
| |
|
| =head1 NAME |
=head1 NAME |
| |
|
| loncoursedata |
Apache::loncoursedata |
| |
|
| =head1 SYNOPSIS |
=head1 SYNOPSIS |
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Line 39 Set of functions that download and proce
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Line 37 Set of functions that download and proce
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| |
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| =head1 PACKAGES USED |
=head1 PACKAGES USED |
| |
|
| Apache::Constants qw(:common :http) |
Apache::lonnet |
| Apache::lonnet() |
Apache::longroup |
| Apache::lonhtmlcommon |
Time::HiRes |
| HTML::TokeParser |
Apache::lonmysql |
| GDBM_File |
LONCAPA |
| |
Digest::MD5 |
| |
|
| =cut |
=cut |
| |
|
| package Apache::loncoursedata; |
package Apache::loncoursedata; |
| |
|
| use strict; |
use strict; |
| use Apache::Constants qw(:common :http); |
use Apache::lonnet; |
| use Apache::lonnet(); |
use Apache::longroup(); |
| use Apache::lonhtmlcommon; |
use Time::HiRes(); |
| use HTML::TokeParser; |
use Apache::lonmysql(); |
| use GDBM_File; |
use LONCAPA; |
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use Digest::MD5(); |
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|
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=pod |
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|
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=head2 make_into_hash |
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|
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Turn a colon separated string into a hash and return a reference |
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to it. Numbering from 0 even elements are keys and odd elements |
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are values e.g. a:b:c:d creates a hash like |
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a => b, c =>d |
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|
| =pod |
=cut |
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|
| =head1 DOWNLOAD INFORMATION |
sub make_into_hash { |
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my $values = shift; |
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my %tmp = map { &unescape($_); } split(':',$values); |
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return \%tmp; |
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} |
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|
| This section contains all the functions that get data from other servers |
|
| and/or itself. |
|
| |
|
| =cut |
{ # Begin scope of table identifiers |
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|
| # ----- DOWNLOAD INFORMATION ------------------------------------------- |
my $current_course =''; |
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my $symb_table; |
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my $part_table; |
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my $student_table; |
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my $groupnames_table; |
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my $students_groups_table; |
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my $performance_table; |
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my $parameters_table; |
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my $fulldump_response_table; |
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my $fulldump_part_table; |
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my $fulldump_timestamp_table; |
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my $weight_table; |
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|
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my @Tables; |
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|
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|
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|
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sub init_dbs { |
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my ($courseid,$drop) = @_; |
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&setup_table_names($courseid); |
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# |
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# Drop any of the existing tables |
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if ($drop) { |
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foreach my $table (@Tables) { |
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&Apache::lonmysql::drop_table($table); |
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} |
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} |
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# |
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# Note - changes to this table must be reflected in the code that |
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# stores the data (calls &Apache::lonmysql::store_row with this table |
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# id |
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my $symb_table_def = { |
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id => $symb_table, |
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permanent => 'no', |
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columns => [{ name => 'symb_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL', |
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auto_inc => 'yes', }, |
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{ name => 'symb', |
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type => 'MEDIUMTEXT', |
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restrictions => 'NOT NULL'}, |
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], |
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'PRIMARY KEY' => ['symb_id'], |
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}; |
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# |
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my $part_table_def = { |
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id => $part_table, |
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permanent => 'no', |
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columns => [{ name => 'part_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL', |
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auto_inc => 'yes', }, |
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{ name => 'part', |
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type => 'VARCHAR(100) BINARY', |
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restrictions => 'NOT NULL'}, |
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], |
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'PRIMARY KEY' => ['part (100)'], |
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'KEY' => [{ columns => ['part_id']},], |
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}; |
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# |
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my $student_table_def = { |
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id => $student_table, |
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permanent => 'no', |
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columns => [{ name => 'student_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL', |
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auto_inc => 'yes', }, |
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{ name => 'student', |
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type => 'VARCHAR(100) BINARY', |
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restrictions => 'NOT NULL UNIQUE'}, |
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{ name => 'section', |
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type => 'VARCHAR(100) BINARY', |
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restrictions => 'NOT NULL'}, |
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{ name => 'start', |
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type => 'INT', |
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restrictions => 'NOT NULL'}, |
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{ name => 'end', |
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type => 'INT', |
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restrictions => 'NOT NULL'}, |
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{ name => 'classification', |
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type => 'VARCHAR(100) BINARY', }, |
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{ name => 'updatetime', |
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type => 'INT UNSIGNED'}, |
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{ name => 'fullupdatetime', |
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type => 'INT UNSIGNED'}, |
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], |
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'PRIMARY KEY' => ['student_id'], |
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'KEY' => [{ columns => ['student (100)', |
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'section (100)', |
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'start', |
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'end']},], |
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}; |
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# |
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my $groupnames_table_def = { |
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id => $groupnames_table, |
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permanent => 'no', |
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columns => [{ name => 'group_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL', |
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auto_inc => 'yes', }, |
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{ name => 'groupname', |
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type => 'VARCHAR(100) BINARY', |
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restrictions => 'NOT NULL UNIQUE'}, |
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], |
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'PRIMARY KEY' => ['group_id'], |
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'KEY' => [{ columns => ['groupname (100)',]},], |
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}; |
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# |
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my $students_groups_table_def = { |
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id => $students_groups_table, |
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permanent => 'no', |
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columns => [{ name => 'student_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL', }, |
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{ name => 'group_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL', }, |
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], |
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'PRIMARY KEY' => ['student_id','group_id'], |
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'KEY' => [{ columns => ['student_id'] }, |
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{ columns => ['group_id'] },], |
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}; |
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# |
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my $performance_table_def = { |
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id => $performance_table, |
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permanent => 'no', |
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columns => [{ name => 'symb_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'student_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'part_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'part', |
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type => 'VARCHAR(100) BINARY', |
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restrictions => 'NOT NULL'}, |
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{ name => 'solved', |
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type => 'TINYTEXT' }, |
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{ name => 'tries', |
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type => 'SMALLINT UNSIGNED' }, |
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{ name => 'awarded', |
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type => 'REAL' }, |
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{ name => 'award', |
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type => 'TINYTEXT' }, |
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{ name => 'awarddetail', |
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type => 'TINYTEXT' }, |
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{ name => 'timestamp', |
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type => 'INT UNSIGNED'}, |
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], |
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'PRIMARY KEY' => ['symb_id','student_id','part_id'], |
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'KEY' => [{ columns=>['student_id'] }, |
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{ columns=>['symb_id'] },], |
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}; |
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# |
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my $fulldump_part_table_def = { |
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id => $fulldump_part_table, |
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permanent => 'no', |
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columns => [ |
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{ name => 'symb_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'part_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'student_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'transaction', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'tries', |
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type => 'SMALLINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'award', |
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type => 'TINYTEXT' }, |
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{ name => 'awarded', |
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type => 'REAL' }, |
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{ name => 'previous', |
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type => 'SMALLINT UNSIGNED' }, |
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# { name => 'regrader', |
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# type => 'TINYTEXT' }, |
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# { name => 'afterduedate', |
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# type => 'TINYTEXT' }, |
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], |
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'PRIMARY KEY' => ['symb_id','part_id','student_id','transaction'], |
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'KEY' => [ |
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{ columns=>['symb_id'] }, |
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{ columns=>['part_id'] }, |
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{ columns=>['student_id'] }, |
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], |
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}; |
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# |
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my $fulldump_response_table_def = { |
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id => $fulldump_response_table, |
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permanent => 'no', |
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columns => [ |
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{ name => 'symb_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'part_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'response_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'student_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'transaction', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'awarddetail', |
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type => 'TINYTEXT' }, |
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# { name => 'message', |
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# type => 'CHAR BINARY'}, |
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{ name => 'response_specific', |
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type => 'TINYTEXT' }, |
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{ name => 'response_specific_value', |
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type => 'TINYTEXT' }, |
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{ name => 'response_specific_2', |
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type => 'TINYTEXT' }, |
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{ name => 'response_specific_value_2', |
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type => 'TINYTEXT' }, |
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{ name => 'submission', |
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type => 'TEXT'}, |
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], |
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'PRIMARY KEY' => ['symb_id','part_id','response_id','student_id', |
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'transaction'], |
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'KEY' => [ |
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{ columns=>['symb_id'] }, |
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{ columns=>['part_id','response_id'] }, |
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{ columns=>['student_id'] }, |
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], |
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}; |
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my $fulldump_timestamp_table_def = { |
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id => $fulldump_timestamp_table, |
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permanent => 'no', |
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columns => [ |
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{ name => 'symb_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'student_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'transaction', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'timestamp', |
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type => 'INT UNSIGNED'}, |
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], |
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'PRIMARY KEY' => ['symb_id','student_id','transaction'], |
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'KEY' => [ |
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{ columns=>['symb_id'] }, |
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{ columns=>['student_id'] }, |
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{ columns=>['transaction'] }, |
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], |
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}; |
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# |
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my $parameters_table_def = { |
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id => $parameters_table, |
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permanent => 'no', |
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columns => [{ name => 'symb_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'student_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'parameter', |
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type => 'TINYTEXT', |
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restrictions => 'NOT NULL' }, |
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{ name => 'value', |
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type => 'MEDIUMTEXT' }, |
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], |
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'PRIMARY KEY' => ['symb_id','student_id','parameter (255)'], |
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}; |
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# |
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my $weight_table_def = { |
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id => $weight_table, |
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permanent => 'no', |
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columns => [{ name => 'symb_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'part_id', |
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type => 'MEDIUMINT UNSIGNED', |
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restrictions => 'NOT NULL' }, |
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{ name => 'weight', |
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type => 'REAL', |
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restrictions => 'NOT NULL' }, |
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], |
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'PRIMARY KEY' => ['symb_id','part_id'], |
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}; |
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# |
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# Create the tables |
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my $tableid; |
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$tableid = &Apache::lonmysql::create_table($symb_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating symb_table: ". |
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&Apache::lonmysql::get_error()); |
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return 1; |
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} |
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# |
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$tableid = &Apache::lonmysql::create_table($part_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating part_table: ". |
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&Apache::lonmysql::get_error()); |
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return 2; |
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} |
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# |
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$tableid = &Apache::lonmysql::create_table($student_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating student_table: ". |
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&Apache::lonmysql::get_error()); |
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return 3; |
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} |
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# |
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$tableid = &Apache::lonmysql::create_table($performance_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating preformance_table: ". |
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&Apache::lonmysql::get_error()); |
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return 5; |
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} |
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# |
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$tableid = &Apache::lonmysql::create_table($parameters_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating parameters_table: ". |
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&Apache::lonmysql::get_error()); |
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return 6; |
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} |
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# |
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$tableid = &Apache::lonmysql::create_table($fulldump_part_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating fulldump_part_table: ". |
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&Apache::lonmysql::get_error()); |
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return 7; |
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} |
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# |
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$tableid = &Apache::lonmysql::create_table($fulldump_response_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating fulldump_response_table: ". |
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&Apache::lonmysql::get_error()); |
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return 8; |
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} |
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$tableid = &Apache::lonmysql::create_table($fulldump_timestamp_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating fulldump_timestamp_table: ". |
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&Apache::lonmysql::get_error()); |
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return 9; |
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} |
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$tableid = &Apache::lonmysql::create_table($weight_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating weight_table: ". |
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&Apache::lonmysql::get_error()); |
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return 10; |
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} |
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$tableid = &Apache::lonmysql::create_table($groupnames_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating groupnames_table: ". |
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&Apache::lonmysql::get_error()); |
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return 11; |
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} |
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$tableid = &Apache::lonmysql::create_table($students_groups_table_def); |
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if (! defined($tableid)) { |
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&Apache::lonnet::logthis("error creating student_groups_table: ". |
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&Apache::lonmysql::get_error()); |
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return 12; |
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} |
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return 0; |
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} |
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|
| =pod |
=pod |
| |
|
| =item &DownloadClasslist() |
=head2 delete_caches |
| |
|
| Collects lastname, generation, middlename, firstname, PID, and section for each |
Drops all of the tables in the local mysql cache associated with the |
| student from their environment database. The section data is also download, though |
specified course id. |
| it is in a rough format, and is processed later. The list of students is built from |
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| collecting a classlist for the course that is to be displayed. Once the classlist |
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| has been downloaded, its date stamp is recorded. Unless the datestamp for the |
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| class database is reset or is modified, this data will not be downloaded again. |
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| Also, there was talk about putting the fullname and section |
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| and perhaps other pieces of data into the classlist file. This would |
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| reduce the number of different file accesses and reduce the amount of |
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| processing on this side. |
|
| |
|
| =over 4 |
TODO: The drops should be pushed into lonmysql to further isolate |
| |
mysql code from other modules. |
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|
| Input: $courseID, $lastDownloadTime, $c |
=cut |
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sub delete_caches { |
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my $courseid = shift; |
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$courseid = $env{'request.course.id'} if (! defined($courseid)); |
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# |
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&setup_table_names($courseid); |
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# |
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my $dbh = &Apache::lonmysql::get_dbh(); |
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foreach my $table (@Tables) { |
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my $command = 'DROP TABLE '.$table.';'; |
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$dbh->do($command); |
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if ($dbh->err) { |
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&Apache::lonnet::logthis($command.' resulted in error: '.$dbh->errstr); |
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} |
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} |
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return; |
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} |
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|
| $courseID: The id of the course |
|
| |
|
| $lastDownloadTime: This is the date stamp for when this information was |
my $have_read_part_table = 0; |
| last gathered. If it is set to Not downloaded, it will gather the data |
my %ids_by_part; |
| again, though it currently does not remove the old data. |
my %parts_by_id; |
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|
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sub get_part_id { |
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my ($part) = @_; |
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$part = 0 if (! defined($part)); |
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if (! $have_read_part_table) { |
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my @Result = &Apache::lonmysql::get_rows($part_table); |
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foreach (@Result) { |
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$ids_by_part{$_->[1]}=$_->[0]; |
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} |
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$have_read_part_table = 1; |
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} |
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if (! exists($ids_by_part{$part})) { |
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&Apache::lonmysql::store_row($part_table,[undef,$part]); |
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undef(%ids_by_part); |
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my @Result = &Apache::lonmysql::get_rows($part_table); |
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foreach (@Result) { |
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$ids_by_part{$_->[1]}=$_->[0]; |
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} |
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} |
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return $ids_by_part{$part} if (exists($ids_by_part{$part})); |
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return undef; # error |
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} |
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|
| $c: The connection class that can determine if the browser has aborted. It |
sub get_part { |
| is used to short circuit this function so that it does not continue to |
my ($part_id) = @_; |
| get information when there is no need. |
if (! exists($parts_by_id{$part_id}) || |
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! defined($parts_by_id{$part_id}) || |
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$parts_by_id{$part_id} eq '') { |
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my @Result = &Apache::lonmysql::get_rows($part_table); |
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foreach (@Result) { |
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$parts_by_id{$_->[0]}=$_->[1]; |
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} |
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} |
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return $parts_by_id{$part_id} if(exists($parts_by_id{$part_id})); |
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return undef; # error |
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} |
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|
| Output: \%classlist |
|
| |
|
| \%classlist: A pointer to a hash containing the following data: |
my $have_read_symb_table = 0; |
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my %ids_by_symb; |
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my %symbs_by_id; |
| |
|
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sub get_symb_id { |
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my ($symb) = @_; |
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if (! $have_read_symb_table) { |
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my @Result = &Apache::lonmysql::get_rows($symb_table); |
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foreach (@Result) { |
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$ids_by_symb{$_->[1]}=$_->[0]; |
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} |
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$have_read_symb_table = 1; |
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} |
| |
if (! exists($ids_by_symb{$symb})) { |
| |
&Apache::lonmysql::store_row($symb_table,[undef,$symb]); |
| |
undef(%ids_by_symb); |
| |
my @Result = &Apache::lonmysql::get_rows($symb_table); |
| |
foreach (@Result) { |
| |
$ids_by_symb{$_->[1]}=$_->[0]; |
| |
} |
| |
} |
| |
return $ids_by_symb{$symb} if(exists( $ids_by_symb{$symb})); |
| |
return undef; # error |
| |
} |
| |
|
| -A list of student name:domain (as keys) (known below as $name) |
sub get_symb { |
| |
my ($symb_id) = @_; |
| |
if (! exists($symbs_by_id{$symb_id}) || |
| |
! defined($symbs_by_id{$symb_id}) || |
| |
$symbs_by_id{$symb_id} eq '') { |
| |
my @Result = &Apache::lonmysql::get_rows($symb_table); |
| |
foreach (@Result) { |
| |
$symbs_by_id{$_->[0]}=$_->[1]; |
| |
} |
| |
} |
| |
return $symbs_by_id{$symb_id} if(exists( $symbs_by_id{$symb_id})); |
| |
return undef; # error |
| |
} |
| |
|
| -A hash pointer for each student containing lastname, generation, firstname, |
my $have_read_student_table = 0; |
| middlename, and PID : Key is $name.studentInformation |
my %ids_by_student; |
| |
my %students_by_id; |
| |
|
| |
sub get_student_id { |
| |
my ($sname,$sdom) = @_; |
| |
my $student = $sname.':'.$sdom; |
| |
if (! $have_read_student_table) { |
| |
my @Result = &Apache::lonmysql::get_rows($student_table); |
| |
foreach (@Result) { |
| |
$ids_by_student{$_->[1]}=$_->[0]; |
| |
} |
| |
$have_read_student_table = 1; |
| |
} |
| |
if (! exists($ids_by_student{$student})) { |
| |
&populate_student_table(); |
| |
undef(%ids_by_student); |
| |
undef(%students_by_id); |
| |
my @Result = &Apache::lonmysql::get_rows($student_table); |
| |
foreach (@Result) { |
| |
$ids_by_student{$_->[1]}=$_->[0]; |
| |
} |
| |
} |
| |
return $ids_by_student{$student} if(exists( $ids_by_student{$student})); |
| |
return undef; # error |
| |
} |
| |
|
| -A hash pointer to each students section data : Key is $name.section |
sub get_student { |
| |
my ($student_id) = @_; |
| |
if (! exists($students_by_id{$student_id}) || |
| |
! defined($students_by_id{$student_id}) || |
| |
$students_by_id{$student_id} eq '') { |
| |
my @Result = &Apache::lonmysql::get_rows($student_table); |
| |
foreach (@Result) { |
| |
$students_by_id{$_->[0]}=$_->[1]; |
| |
} |
| |
} |
| |
return $students_by_id{$student_id} if(exists($students_by_id{$student_id})); |
| |
return undef; # error |
| |
} |
| |
|
| -If there was an error in dump, it will be returned in the hash. See |
sub populate_student_table { |
| the error codes for dump in lonnet. Also, an error key will be |
my ($courseid) = @_; |
| generated if an abort occurs. |
if (! defined($courseid)) { |
| |
$courseid = $env{'request.course.id'}; |
| |
} |
| |
# |
| |
&setup_table_names($courseid); |
| |
&init_dbs($courseid,0); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
my $request = 'INSERT IGNORE INTO '.$student_table. |
| |
"(student,section,start,end) VALUES "; |
| |
my $cdom = $env{'course.'.$courseid.'.domain'}; |
| |
my $cnum = $env{'course.'.$courseid.'.num'}; |
| |
my $classlist = &get_classlist($cdom,$cnum); |
| |
my $student_count=0; |
| |
while (my ($student,$data) = each %$classlist) { |
| |
my ($section,$start,$end) = ($data->[&CL_SECTION()], |
| |
$data->[&CL_START()], |
| |
$data->[&CL_END()]); |
| |
if ($section eq '' || $section =~ /^\s*$/) { |
| |
$section = 'none'; |
| |
} |
| |
if (!defined($start)) { $start = 0; } |
| |
if (!defined($end)) { $end = 0; } |
| |
$request .= "('".$student."','".$section."','".$start."','".$end."'),"; |
| |
$student_count++; |
| |
} |
| |
return if ($student_count == 0); |
| |
chop($request); |
| |
$dbh->do($request); |
| |
if ($dbh->err()) { |
| |
&Apache::lonnet::logthis("error ".$dbh->errstr(). |
| |
" occurred executing \n". |
| |
$request); |
| |
} |
| |
return; |
| |
} |
| |
|
| =back |
my $have_read_groupnames_table = 0; |
| |
my %ids_by_groupname; |
| |
|
| =cut |
sub get_group_id { |
| |
my ($groupname) = @_; |
| |
if (! $have_read_groupnames_table) { |
| |
my @Result = &Apache::lonmysql::get_rows($groupnames_table); |
| |
foreach (@Result) { |
| |
$ids_by_groupname{$_->[1]}=$_->[0]; |
| |
} |
| |
$have_read_groupnames_table = 1; |
| |
} |
| |
if (! exists($ids_by_groupname{$groupname})) { |
| |
&populate_groupnames_table(); |
| |
undef(%ids_by_groupname); |
| |
my @Result = &Apache::lonmysql::get_rows($groupnames_table); |
| |
foreach (@Result) { |
| |
$ids_by_groupname{$_->[1]}=$_->[0]; |
| |
} |
| |
} |
| |
if (exists($ids_by_groupname{$groupname})) { |
| |
return $ids_by_groupname{$groupname}; |
| |
} |
| |
return undef; # error |
| |
} |
| |
|
| sub DownloadClasslist { |
sub populate_groupnames_table { |
| my ($courseID, $lastDownloadTime, $c)=@_; |
my ($courseid) = @_; |
| my ($courseDomain,$courseNumber)=split(/\_/,$courseID); |
if (! defined($courseid)) { |
| my %classlist; |
$courseid = $env{'request.course.id'}; |
| |
} |
| my $modifiedTime = &Apache::lonnet::GetFileTimestamp($courseDomain, $courseNumber, |
&setup_table_names($courseid); |
| 'classlist.db', |
&init_dbs($courseid,0); |
| $Apache::lonnet::perlvar{'lonUsersDir'}); |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
my $cdom = $env{'course.'.$courseid.'.domain'}; |
| # Always download the information if lastDownloadTime is set to |
my $cnum = $env{'course.'.$courseid.'.num'}; |
| # Not downloaded, otherwise it is only downloaded if the file |
my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum); |
| # has been updated and has a more recent date stamp |
return if (!%curr_groups); |
| if($lastDownloadTime ne 'Not downloaded' && |
my $request = 'INSERT IGNORE INTO '.$groupnames_table. |
| $lastDownloadTime >= $modifiedTime && $modifiedTime >= 0) { |
'(groupname) VALUES '; |
| # Data is not gathered so return UpToDate as true. This |
foreach my $groupname (sort(keys(%curr_groups)),'none') { |
| # will be interpreted in ProcessClasslist |
$request .= "('".$groupname."'),"; |
| $classlist{'lastDownloadTime'}=time; |
} |
| $classlist{'UpToDate'} = 'true'; |
chop($request); |
| return \%classlist; |
$dbh->do($request); |
| |
if ($dbh->err()) { |
| |
&Apache::lonnet::logthis("error ".$dbh->errstr(). |
| |
" occurred executing \n". |
| |
$request); |
| } |
} |
| |
return; |
| |
} |
| |
|
| |
my $have_read_studentsgroups_table = 0; |
| |
my %groupids_by_studentid; |
| |
|
| %classlist=&Apache::lonnet::dump('classlist',$courseDomain, $courseNumber); |
sub get_students_groupids { |
| foreach(keys (%classlist)) { |
my ($student_id) = @_; |
| if(/^(con_lost|error|no_such_host)/i) { |
if (! $have_read_studentsgroups_table) { |
| return \%classlist; |
my @Result = &Apache::lonmysql::get_rows($students_groups_table); |
| |
foreach (@Result) { |
| |
push(@{$groupids_by_studentid{$_->[0]}},$_->[1]); |
| } |
} |
| |
$have_read_studentsgroups_table = 1; |
| } |
} |
| |
if (! exists($groupids_by_studentid{$student_id})) { |
| foreach my $name (keys(%classlist)) { |
&populate_students_groups_table(); |
| if(defined($c) && ($c->aborted())) { |
undef(%groupids_by_studentid); |
| $classlist{'error'}='aborted'; |
my @Result = &Apache::lonmysql::get_rows($students_groups_table); |
| return \%classlist; |
foreach (@Result) { |
| |
push(@{$groupids_by_studentid{$_->[0]}},$_->[1]); |
| |
} |
| |
} |
| |
if (exists($groupids_by_studentid{$student_id})) { |
| |
if (ref($groupids_by_studentid{$student_id}) eq 'ARRAY') { |
| |
return @{$groupids_by_studentid{$student_id}}; |
| } |
} |
| |
} |
| |
return undef; # error |
| |
} |
| |
|
| my ($studentName,$studentDomain) = split(/\:/,$name); |
|
| # Download student environment data, specifically the full name and id. |
|
| my %studentInformation=&Apache::lonnet::get('environment', |
|
| ['lastname','generation', |
|
| 'firstname','middlename', |
|
| 'id'], |
|
| $studentDomain, |
|
| $studentName); |
|
| $classlist{$name.':studentInformation'}=\%studentInformation; |
|
| |
|
| if($c->aborted()) { |
sub populate_students_groups_table { |
| $classlist{'error'}='aborted'; |
my ($courseid) = @_; |
| return \%classlist; |
if (! defined($courseid)) { |
| |
$courseid = $env{'request.course.id'}; |
| |
} |
| |
# |
| |
&setup_table_names($courseid); |
| |
&init_dbs($courseid,0); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
my $request = 'INSERT IGNORE INTO '.$students_groups_table. |
| |
"(student_id,group_id) VALUES "; |
| |
my $cdom = $env{'course.'.$courseid.'.domain'}; |
| |
my $cnum = $env{'course.'.$courseid.'.num'}; |
| |
my ($classlist,$keylist) = &get_classlist($cdom,$cnum); |
| |
my ($classgroups,$studentgroups) = &get_group_memberships($classlist, |
| |
$keylist, |
| |
$cdom,$cnum); |
| |
my $record_count = 0; |
| |
foreach my $student (sort(keys(%{$classgroups}))) { |
| |
my $student_id = &get_student_id(split(':',$student)); |
| |
my @studentsgroups = &get_students_groups($student,'Active',$classgroups); |
| |
if (@studentsgroups < 1) { |
| |
@studentsgroups = ('none'); |
| |
} |
| |
foreach my $groupname (@studentsgroups) { |
| |
my $group_id = &get_group_id($groupname); |
| |
$request .= "('".$student_id."','".$group_id."'),"; |
| |
$record_count++; |
| |
} |
| |
} |
| |
return if ($record_count == 0); |
| |
chop($request); |
| |
$dbh->do($request); |
| |
if ($dbh->err()) { |
| |
&Apache::lonnet::logthis("error ".$dbh->errstr(). |
| |
" occurred executing \n". |
| |
$request); |
| |
} |
| |
return; |
| |
} |
| |
|
| |
sub clear_internal_caches { |
| |
$have_read_part_table = 0; |
| |
undef(%ids_by_part); |
| |
undef(%parts_by_id); |
| |
$have_read_symb_table = 0; |
| |
undef(%ids_by_symb); |
| |
undef(%symbs_by_id); |
| |
$have_read_student_table = 0; |
| |
undef(%ids_by_student); |
| |
undef(%students_by_id); |
| |
$have_read_groupnames_table = 0; |
| |
undef(%ids_by_groupname); |
| |
} |
| |
|
| |
sub symb_is_for_task { |
| |
my ($symb) = @_; |
| |
return ($symb =~ /\.task$/); |
| |
} |
| |
|
| |
|
| |
sub update_full_student_data { |
| |
my ($sname,$sdom,$courseid) = @_; |
| |
# |
| |
# Set up database names |
| |
&setup_table_names($courseid); |
| |
# |
| |
my $student_id = &get_student_id($sname,$sdom); |
| |
my $student = $sname.':'.$sdom; |
| |
# |
| |
my $returnstatus = 'okay'; |
| |
# |
| |
# Download students data |
| |
my $time_of_retrieval = time; |
| |
my @tmp = &Apache::lonnet::dumpstore($courseid,$sdom,$sname); |
| |
if (@tmp && $tmp[0] =~ /^error/) { |
| |
$returnstatus = 'error retrieving full student data'; |
| |
return $returnstatus; |
| |
} elsif (! @tmp) { |
| |
$returnstatus = 'okay: no student data'; |
| |
return $returnstatus; |
| |
} |
| |
my %studentdata = @tmp; |
| |
# |
| |
# Get database handle and clean out the tables |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
$dbh->do('DELETE FROM '.$fulldump_response_table.' WHERE student_id='. |
| |
$student_id); |
| |
$dbh->do('DELETE FROM '.$fulldump_part_table.' WHERE student_id='. |
| |
$student_id); |
| |
$dbh->do('DELETE FROM '.$fulldump_timestamp_table.' WHERE student_id='. |
| |
$student_id); |
| |
# |
| |
# Parse and store the data into a form we can handle |
| |
my $partdata; |
| |
my $respdata; |
| |
while (my ($key,$value) = each(%studentdata)) { |
| |
next if ($key =~ /^(\d+):(resource$|subnum$|keys:)/); |
| |
my ($transaction,$symb,$parameter) = split(':',$key); |
| |
$symb = &unescape($symb); |
| |
$parameter = &unescape($parameter); |
| |
my $symb_id = &get_symb_id($symb); |
| |
if ($parameter eq 'timestamp') { |
| |
# We can deal with 'timestamp' right away |
| |
my @timestamp_storage = ($symb_id,$student_id, |
| |
$transaction,$value); |
| |
my $store_command = 'INSERT IGNORE INTO '.$fulldump_timestamp_table. |
| |
" VALUES ('".join("','",@timestamp_storage)."');"; |
| |
$dbh->do($store_command); |
| |
if ($dbh->err()) { |
| |
&Apache::lonnet::logthis('unable to execute '.$store_command); |
| |
&Apache::lonnet::logthis($dbh->errstr()); |
| |
} |
| |
next; |
| |
} elsif ($parameter eq 'version') { |
| |
next; |
| |
} elsif (&symb_is_for_task($symb)) { |
| |
next if ($parameter !~ /^resource\.(.*)\.(award| |
| |
awarded| |
| |
solved| |
| |
submission| |
| |
portfiles| |
| |
status| |
| |
version| |
| |
regrader)\s*$/x); |
| |
my ($version_and_part_id, $field) = ($1,$2); |
| |
|
| |
next if ($version_and_part_id !~ /\./ |
| |
&& $field ne 'regrader' && $field ne 'version'); |
| |
|
| |
my ($version, $part, $instance) = |
| |
split(/\./,$version_and_part_id); |
| |
|
| |
#skip and instance dimension or criteria specific data |
| |
next if (defined($instance) |
| |
&& $instance ne $field |
| |
&& $instance ne 'bridgetask'); |
| |
|
| |
if (!defined($part)) { |
| |
$part = $version; |
| |
} |
| |
my $resp_id = &get_part_id('0'); |
| |
my $part_id = &get_part_id($part); |
| |
|
| |
if ($field eq 'version') { |
| |
# for tasks each version is an attempt at it thus |
| |
# version -> tries |
| |
$partdata->{$symb_id}{$part_id}{$transaction}{'tries'}= |
| |
$value; |
| |
# at new version time the record gets reset thus adding a |
| |
# virtual response awarddetail of 'new_version' |
| |
$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific'}='status'; |
| |
$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific_value'}='new_version'; |
| |
|
| |
} elsif ($field eq 'award' || $field eq 'awarded' |
| |
|| $field eq 'solved') { |
| |
$partdata->{$symb_id}{$part_id}{$transaction}{$field}= |
| |
$value; |
| |
} elsif ($field eq 'portfiles') { |
| |
# tasks only accepts portfolio submissions |
| |
$value = $dbh->quote($value); |
| |
$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'submission'}=$value; |
| |
} elsif ($field eq 'status') { |
| |
$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific'}=$field; |
| |
$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific_value'}=$value; |
| |
} elsif ($field eq 'regrader') { |
| |
$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific_2'}=$field; |
| |
$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific_value_2'}=$value; |
| |
} |
| |
} elsif ($parameter =~ /^resource\.(.*)\.(tries| |
| |
award| |
| |
awarded| |
| |
previous| |
| |
solved| |
| |
awarddetail| |
| |
submission| |
| |
submissiongrading| |
| |
molecule)\s*$/x){ |
| |
# we do not have enough information to store an |
| |
# entire row, so we save it up until later. |
| |
my ($part_and_resp_id,$field) = ($1,$2); |
| |
my ($part,$part_id,$resp,$resp_id); |
| |
if ($part_and_resp_id =~ /\./) { |
| |
($part,$resp) = split(/\./,$part_and_resp_id); |
| |
$part_id = &get_part_id($part); |
| |
$resp_id = &get_part_id($resp); |
| |
} else { |
| |
$part_id = &get_part_id($part_and_resp_id); |
| |
} |
| |
# Deal with part specific data |
| |
if ($field =~ /^(tries|award|awarded|previous)$/) { |
| |
$partdata->{$symb_id}->{$part_id}->{$transaction}->{$field}=$value; |
| |
} |
| |
# deal with response specific data |
| |
if (defined($resp_id) && |
| |
$field =~ /^(awarddetail| |
| |
submission| |
| |
submissiongrading| |
| |
molecule)$/x) { |
| |
if ($field eq 'submission') { |
| |
# We have to be careful with user supplied input. |
| |
# most of the time we are okay because it is escaped. |
| |
# However, there is one wrinkle: submissions which end in |
| |
# and odd number of '\' cause insert errors to occur. |
| |
# Best trap this somehow... |
| |
$value = $dbh->quote($value); |
| |
} |
| |
if ($field eq 'submissiongrading' || |
| |
$field eq 'molecule') { |
| |
$respdata->{$symb_id}->{$part_id}->{$resp_id}->{$transaction}->{'response_specific'}=$field; |
| |
$respdata->{$symb_id}->{$part_id}->{$resp_id}->{$transaction}->{'response_specific_value'}=$value; |
| |
} else { |
| |
$respdata->{$symb_id}->{$part_id}->{$resp_id}->{$transaction}->{$field}=$value; |
| |
} |
| |
} |
| |
} |
| |
} |
| |
## |
| |
## Store the part data |
| |
my $store_command = 'INSERT IGNORE INTO '.$fulldump_part_table. |
| |
' VALUES '."\n"; |
| |
my $store_rows = 0; |
| |
while (my ($symb_id,$hash1) = each (%$partdata)) { |
| |
while (my ($part_id,$hash2) = each (%$hash1)) { |
| |
while (my ($transaction,$data) = each (%$hash2)) { |
| |
$store_command .= "('".join("','",$symb_id,$part_id, |
| |
$student_id, |
| |
$transaction, |
| |
$data->{'tries'}, |
| |
$data->{'award'}, |
| |
$data->{'awarded'}, |
| |
$data->{'previous'})."'),"; |
| |
$store_rows++; |
| |
} |
| |
} |
| |
} |
| |
if ($store_rows) { |
| |
chop($store_command); |
| |
$dbh->do($store_command); |
| |
if ($dbh->err) { |
| |
$returnstatus = 'error saving part data'; |
| |
&Apache::lonnet::logthis('insert error '.$dbh->errstr()); |
| |
&Apache::lonnet::logthis("While attempting\n".$store_command); |
| |
} |
| |
} |
| |
## |
| |
## Store the response data |
| |
$store_command = 'INSERT IGNORE INTO '.$fulldump_response_table. |
| |
' VALUES '."\n"; |
| |
$store_rows = 0; |
| |
while (my ($symb_id,$hash1) = each (%$respdata)) { |
| |
while (my ($part_id,$hash2) = each (%$hash1)) { |
| |
while (my ($resp_id,$hash3) = each (%$hash2)) { |
| |
while (my ($transaction,$data) = each (%$hash3)) { |
| |
my $submission = $data->{'submission'}; |
| |
# We have to be careful with user supplied input. |
| |
# most of the time we are okay because it is escaped. |
| |
# However, there is one wrinkle: submissions which end in |
| |
# and odd number of '\' cause insert errors to occur. |
| |
# Best trap this somehow... |
| |
$submission = $dbh->quote($submission); |
| |
$store_command .= "('". |
| |
join("','",$symb_id,$part_id, |
| |
$resp_id,$student_id, |
| |
$transaction, |
| |
$data->{'awarddetail'}, |
| |
$data->{'response_specific'}, |
| |
$data->{'response_specific_value'}, |
| |
$data->{'response_specific_2'}, |
| |
$data->{'response_specific_value_2'}). |
| |
"',".$submission."),"; |
| |
$store_rows++; |
| |
} |
| |
} |
| } |
} |
| |
} |
| |
if ($store_rows) { |
| |
chop($store_command); |
| |
$dbh->do($store_command); |
| |
if ($dbh->err) { |
| |
$returnstatus = 'error saving response data'; |
| |
&Apache::lonnet::logthis('insert error '.$dbh->errstr()); |
| |
&Apache::lonnet::logthis("While attempting\n".$store_command); |
| |
} |
| |
} |
| |
## |
| |
## Update the students "current" data in the performance |
| |
## and parameters tables. |
| |
my ($status,undef) = &store_student_data |
| |
($sname,$sdom,$courseid, |
| |
&Apache::lonnet::convert_dump_to_currentdump(\%studentdata)); |
| |
if ($returnstatus eq 'okay' && $status ne 'okay') { |
| |
$returnstatus = 'error saving current data:'.$status; |
| |
} elsif ($status ne 'okay') { |
| |
$returnstatus .= ' error saving current data:'.$status; |
| |
} |
| |
## |
| |
## Update the students time...... |
| |
if ($returnstatus eq 'okay') { |
| |
&store_updatetime($student_id,$time_of_retrieval,$time_of_retrieval); |
| |
if ($dbh->err) { |
| |
if ($returnstatus eq 'okay') { |
| |
$returnstatus = 'error updating student time'; |
| |
} else { |
| |
$returnstatus = 'error updating student time'; |
| |
} |
| |
} |
| |
} |
| |
return $returnstatus; |
| |
} |
| |
|
| |
|
| #Section |
sub update_student_data { |
| my %section=&Apache::lonnet::dump('roles',$studentDomain,$studentName); |
my ($sname,$sdom,$courseid) = @_; |
| $classlist{$name.':sections'}=\%section; |
# |
| |
# Set up database names |
| |
&setup_table_names($courseid); |
| |
# |
| |
my $student_id = &get_student_id($sname,$sdom); |
| |
my $student = $sname.':'.$sdom; |
| |
# |
| |
my $returnstatus = 'okay'; |
| |
# |
| |
# Download students data |
| |
my $time_of_retrieval = time; |
| |
my %student_data = &Apache::lonnet::currentdump($courseid,$sdom,$sname); |
| |
if (&Apache::lonnet::error(%student_data)) { |
| |
&Apache::lonnet::logthis('error getting data for '. |
| |
$sname.':'.$sdom.' in course '.$courseid. |
| |
':'.(%student_data)[0]); |
| |
$returnstatus =(%student_data)[0] ; |
| |
return ($returnstatus,undef); |
| |
} |
| |
if (scalar(keys(%student_data)) < 1) { |
| |
return ('no data',undef); |
| |
} |
| |
my @Results = &store_student_data($sname,$sdom,$courseid,\%student_data); |
| |
# |
| |
# Set the students update time |
| |
if ($Results[0] eq 'okay') { |
| |
&store_updatetime($student_id,$time_of_retrieval); |
| } |
} |
| |
# |
| |
return @Results; |
| |
} |
| |
|
| $classlist{'UpToDate'} = 'false'; |
sub store_updatetime { |
| $classlist{'lastDownloadTime'}=time; |
my ($student_id,$updatetime,$fullupdatetime)=@_; |
| |
my $values = ''; |
| |
if (defined($updatetime)) { |
| |
$values = 'updatetime='.$updatetime.' '; |
| |
} |
| |
if (defined($fullupdatetime)) { |
| |
if ($values ne '') { |
| |
$values .= ','; |
| |
} |
| |
$values .= 'fullupdatetime='.$fullupdatetime.' '; |
| |
} |
| |
return if ($values eq ''); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
my $request = 'UPDATE '.$student_table.' SET '.$values. |
| |
' WHERE student_id='.$student_id.' LIMIT 1'; |
| |
$dbh->do($request); |
| |
} |
| |
|
| return \%classlist; |
sub store_student_data { |
| |
my ($sname,$sdom,$courseid,$student_data) = @_; |
| |
# |
| |
my $student_id = &get_student_id($sname,$sdom); |
| |
my $student = $sname.':'.$sdom; |
| |
# |
| |
my $returnstatus = 'okay'; |
| |
# |
| |
# Remove all of the students data from the table |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
$dbh->do('DELETE FROM '.$performance_table.' WHERE student_id='. |
| |
$student_id); |
| |
$dbh->do('DELETE FROM '.$parameters_table.' WHERE student_id='. |
| |
$student_id); |
| |
# |
| |
# Store away the data |
| |
# |
| |
my $starttime = Time::HiRes::time; |
| |
my $elapsed = 0; |
| |
my $rows_stored; |
| |
my $store_parameters_command = 'INSERT IGNORE INTO '.$parameters_table. |
| |
' VALUES '."\n"; |
| |
my $num_parameters = 0; |
| |
my $store_performance_command = 'INSERT IGNORE INTO '.$performance_table. |
| |
' VALUES '."\n"; |
| |
return ('error',undef) if (! defined($dbh)); |
| |
while (my ($current_symb,$param_hash) = each(%{$student_data})) { |
| |
# |
| |
# make sure the symb is set up properly |
| |
my $symb_id = &get_symb_id($current_symb); |
| |
# |
| |
# Parameters |
| |
while (my ($parameter,$value) = each(%$param_hash)) { |
| |
if ($parameter !~ /(timestamp|resource\.(.*)\.(solved|tries|awarded|award|awarddetail|previous))/) { |
| |
my $sql_parameter = "('".join("','", |
| |
$symb_id,$student_id, |
| |
$parameter)."',". |
| |
$dbh->quote($value)."),\n"; |
| |
$num_parameters ++; |
| |
if ($sql_parameter !~ /''/) { |
| |
$store_parameters_command .= $sql_parameter; |
| |
#$rows_stored++; |
| |
} |
| |
} |
| |
} |
| |
# Performance |
| |
my %stored; |
| |
while (my ($parameter,$value) = each(%$param_hash)) { |
| |
next if ($parameter !~ /^resource\.(.*)\.(solved|awarded)$/); |
| |
my $part = $1; |
| |
my $which = $2; |
| |
next if ($part =~ /\./); |
| |
next if (exists($stored{$part})); |
| |
$stored{$part}++; |
| |
# |
| |
my $part_id = &get_part_id($part); |
| |
next if (!defined($part_id)); |
| |
|
| |
my ($solved,$awarded); |
| |
if ($which eq 'solved') { |
| |
$solved = $value; |
| |
$awarded = $param_hash->{'resource.'.$part.'.awarded'}; |
| |
} else { |
| |
$solved = $param_hash->{'resource.'.$part.'.solved'}; |
| |
$awarded = $value; |
| |
} |
| |
my $award = $param_hash->{'resource.'.$part.'.award'}; |
| |
my $awarddetail = $param_hash->{'resource.'.$part.'.awarddetail'}; |
| |
my $timestamp = $param_hash->{'timestamp'}; |
| |
my $tries = $param_hash->{'resource.'.$part.'.tries'}; |
| |
if (&symb_is_for_task($current_symb)) { |
| |
$tries = $param_hash->{'resource.'.$part.'.version'}; |
| |
} |
| |
# |
| |
$solved = '' if (! defined($solved)); |
| |
$tries = '' if (! defined($tries)); |
| |
$awarded = '' if (! defined($awarded)); |
| |
$award = '' if (! defined($award)); |
| |
$awarddetail = '' if (! defined($awarddetail)); |
| |
my $sql_performance = |
| |
"('".join("','",$symb_id,$student_id,$part_id,$part, |
| |
$solved,$tries,$awarded,$award, |
| |
$awarddetail,$timestamp)."'),\n"; |
| |
$store_performance_command .= $sql_performance; |
| |
$rows_stored++; |
| |
} |
| |
} |
| |
if (! $rows_stored) { return ($returnstatus, undef); } |
| |
$store_parameters_command =~ s|,\n$||; |
| |
$store_performance_command =~ s|,\n$||; |
| |
my $start = Time::HiRes::time; |
| |
$dbh->do($store_performance_command); |
| |
if ($dbh->err()) { |
| |
&Apache::lonnet::logthis('performance bigass insert error:'. |
| |
$dbh->errstr()); |
| |
&Apache::lonnet::logthis('command = '.$/.$store_performance_command); |
| |
$returnstatus = 'error: unable to insert performance into database'; |
| |
return ($returnstatus,$student_data); |
| |
} |
| |
$dbh->do($store_parameters_command) if ($num_parameters>0); |
| |
if ($dbh->err()) { |
| |
&Apache::lonnet::logthis('parameters bigass insert error:'. |
| |
$dbh->errstr()); |
| |
&Apache::lonnet::logthis('command = '.$/.$store_parameters_command); |
| |
&Apache::lonnet::logthis('rows_stored = '.$rows_stored); |
| |
&Apache::lonnet::logthis('student_id = '.$student_id); |
| |
$returnstatus = 'error: unable to insert parameters into database'; |
| |
return ($returnstatus,$student_data); |
| |
} |
| |
$elapsed += Time::HiRes::time - $start; |
| |
return ($returnstatus,$student_data); |
| } |
} |
| |
|
| =pod |
|
| |
|
| =item &DownloadCourseInformation() |
sub ensure_tables_are_set_up { |
| |
my ($courseid) = @_; |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
# |
| |
# Clean out package variables |
| |
&setup_table_names($courseid); |
| |
# |
| |
# if the tables do not exist, make them |
| |
my @CurrentTable = &Apache::lonmysql::tables_in_db(); |
| |
my ($found_symb,$found_student,$found_groups,$found_groupnames,$found_part, |
| |
$found_performance,$found_parameters,$found_fulldump_part, |
| |
$found_fulldump_response,$found_fulldump_timestamp, |
| |
$found_weight); |
| |
foreach (@CurrentTable) { |
| |
$found_symb = 1 if ($_ eq $symb_table); |
| |
$found_student = 1 if ($_ eq $student_table); |
| |
$found_groups = 1 if ($_ eq $students_groups_table); |
| |
$found_groupnames = 1 if ($_ eq $groupnames_table); |
| |
$found_part = 1 if ($_ eq $part_table); |
| |
$found_performance = 1 if ($_ eq $performance_table); |
| |
$found_parameters = 1 if ($_ eq $parameters_table); |
| |
$found_fulldump_part = 1 if ($_ eq $fulldump_part_table); |
| |
$found_fulldump_response = 1 if ($_ eq $fulldump_response_table); |
| |
$found_fulldump_timestamp = 1 if ($_ eq $fulldump_timestamp_table); |
| |
$found_weight = 1 if ($_ eq $weight_table); |
| |
} |
| |
if (!$found_symb || |
| |
!$found_student || !$found_part || |
| |
!$found_performance || !$found_parameters || |
| |
!$found_fulldump_part || !$found_fulldump_response || |
| |
!$found_fulldump_timestamp || !$found_weight ) { |
| |
if (&init_dbs($courseid,1)) { |
| |
return 'error'; |
| |
} |
| |
} |
| |
} |
| |
|
| |
sub ensure_current_data { |
| |
my ($sname,$sdom,$courseid) = @_; |
| |
my $status = 'okay'; # return value |
| |
# |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
&ensure_tables_are_set_up($courseid); |
| |
# |
| |
# Get the update time for the user |
| |
my $updatetime = 0; |
| |
my $getuserdir = 1; |
| |
my $modifiedtime = &Apache::lonnet::GetFileTimestamp |
| |
($sdom,$sname,$courseid.'.db',$getuserdir); |
| |
# |
| |
if ($modifiedtime == -1) { |
| |
return ('no data',undef); |
| |
} |
| |
|
| |
my $student_id = &get_student_id($sname,$sdom); |
| |
&get_students_groupids($student_id); |
| |
my @Result = &Apache::lonmysql::get_rows($student_table, |
| |
"student_id ='$student_id'"); |
| |
my $data = undef; |
| |
if (@Result) { |
| |
$updatetime = $Result[0]->[6]; # Ack! This is dumb! |
| |
} |
| |
if ($modifiedtime > $updatetime) { |
| |
($status,$data) = &update_student_data($sname,$sdom,$courseid); |
| |
} |
| |
return ($status,$data); |
| |
} |
| |
|
| Dump of all the course information for a single student. The data can be |
|
| pruned by making use of dumps regular expression arguement. This function |
|
| also takes a regular expression which it passes straight through to dump. |
|
| The data is no escaped, because it is done elsewhere. It also |
|
| checks the timestamp of the students course database file and only downloads |
|
| if it has been modified since the last download. |
|
| |
|
| =over 4 |
sub ensure_current_full_data { |
| |
my ($sname,$sdom,$courseid) = @_; |
| |
my $status = 'okay'; # return value |
| |
# |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
&ensure_tables_are_set_up($courseid); |
| |
# |
| |
# Get the update time for the user |
| |
my $getuserdir = 1; |
| |
my $modifiedtime = &Apache::lonnet::GetFileTimestamp |
| |
($sdom,$sname,$courseid.'.db',$getuserdir); |
| |
# |
| |
my $student_id = &get_student_id($sname,$sdom); |
| |
&get_students_groupids($student_id); |
| |
my @Result = &Apache::lonmysql::get_rows($student_table, |
| |
"student_id ='$student_id'"); |
| |
my $updatetime; |
| |
if (@Result && ref($Result[0]) eq 'ARRAY') { |
| |
$updatetime = $Result[0]->[7]; |
| |
} |
| |
if (! defined($updatetime) || $modifiedtime > $updatetime) { |
| |
$status = &update_full_student_data($sname,$sdom,$courseid); |
| |
} |
| |
return $status; |
| |
} |
| |
|
| |
sub ensure_current_groups { |
| |
my ($courseid) = @_; |
| |
my ($cdom,$cnum); |
| |
if (defined($courseid)) { |
| |
my %coursehash = &Apache::lonnet::coursedescription($courseid); |
| |
$cdom = $coursehash{'domain'}; |
| |
$cnum = $coursehash{'num'}; |
| |
} elsif ($env{'request.course.id'}) { |
| |
$courseid = $env{'request.course.id'}; |
| |
$cdom = $env{'course.'.$courseid.'.domain'}; |
| |
$cnum = $env{'course.'.$courseid.'.num'}; |
| |
} |
| |
if ($cdom eq '' || $cnum eq '') { |
| |
return 'error: invalid course'; |
| |
} |
| |
&ensure_tables_are_set_up($courseid); |
| |
# Get the update time for the groupnames table |
| |
my $getuserdir = 1; |
| |
my $modifiedtime = &Apache::lonnet::GetFileTimestamp |
| |
($cdom,$cnum,'coursegroups.db',$getuserdir); |
| |
my %tableinfo = &Apache::lonmysql::table_information($groupnames_table); |
| |
my $updatetime; |
| |
if ($tableinfo{'Update_time'}) { |
| |
$updatetime = $tableinfo{'Update_time'}; |
| |
} |
| |
print STDERR "1. updatetime is ||$updatetime|| and modifidtime is ||$modifiedtime||\n"; |
| |
if (! defined($updatetime) || $modifiedtime > $updatetime) { |
| |
my (%groups_in_sql,%removegroups,$addgroup); |
| |
my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum); |
| |
my @Result = &Apache::lonmysql::get_rows($groupnames_table); |
| |
foreach my $row (@Result) { |
| |
my ($id,$name) = @{$row}; |
| |
unless (exists($curr_groups{$name})) { |
| |
$groups_in_sql{$name}=$id; |
| |
} elsif ($id) { |
| |
$removegroups{$id} = $name; |
| |
} |
| |
} |
| |
foreach my $group (keys(%curr_groups)) { |
| |
unless (exists($groups_in_sql{$group})) { |
| |
$addgroup = 1; |
| |
last; |
| |
} |
| |
} |
| |
if (keys(%removegroups)) { |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
foreach my $group_id (keys(%removegroups)) { |
| |
my $command = 'DELETE FROM '.$groupnames_table.' WHERE group_id='. |
| |
$group_id; |
| |
$dbh->do($command); |
| |
if ($dbh->err()) { |
| |
&Apache::lonnet::logthis("error ".$dbh->errstr(). |
| |
" occurred executing \n". |
| |
"SQL command: $command"); |
| |
} |
| |
} |
| |
} |
| |
if ($addgroup) { |
| |
&populate_groupnames_table($courseid); |
| |
} |
| |
} |
| |
return; |
| |
} |
| |
|
| Input: $namedata, $courseID, $lastDownloadTime, $WhatIWant |
sub ensure_current_students_groups { |
| |
my ($courseid) = @_; |
| |
my ($cdom,$cnum); |
| |
if (defined($courseid)) { |
| |
my %coursehash = &Apache::lonnet::coursedescription($courseid); |
| |
$cdom = $coursehash{'domain'}; |
| |
$cnum = $coursehash{'num'}; |
| |
} elsif ($env{'request.course.id'}) { |
| |
$courseid = $env{'request.course.id'}; |
| |
$cdom = $env{'course.'.$courseid.'.domain'}; |
| |
$cnum = $env{'course.'.$courseid.'.num'}; |
| |
} |
| |
&ensure_tables_are_set_up($courseid); |
| |
# Get the update time for the groupnames table |
| |
my $getuserdir = 1; |
| |
my $modifiedtime = &Apache::lonnet::GetFileTimestamp |
| |
($cdom,$cnum,'groupmembership.db',$getuserdir); |
| |
my %tableinfo = &Apache::lonmysql::table_information($students_groups_table); |
| |
my $updatetime; |
| |
if ($tableinfo{'Update_time'}) { |
| |
$updatetime = $tableinfo{'Update_time'}; |
| |
} |
| |
print STDERR "2. updatetime is ||$updatetime|| and modifidtime is ||$modifiedtime||\n"; |
| |
if ((!defined($updatetime)) || ($modifiedtime > $updatetime)) { |
| |
if (&Apache::lonmysql::drop_table($students_groups_table)) { |
| |
if (&init_dbs($courseid)) { |
| |
return "error creating $students_groups_table\n"; |
| |
} else { |
| |
&populate_students_groups_table($courseid); |
| |
} |
| |
} |
| |
} |
| |
return; |
| |
} |
| |
|
| $namedata: student name:domain |
sub get_student_data_from_performance_cache { |
| |
my ($sname,$sdom,$symb,$courseid)=@_; |
| |
my $student = $sname.':'.$sdom if (defined($sname) && defined($sdom)); |
| |
&setup_table_names($courseid); |
| |
# |
| |
# Return hash |
| |
my $studentdata; |
| |
# |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
my $request = "SELECT ". |
| |
"d.symb,a.part,a.solved,a.tries,a.awarded,a.award,a.awarddetail,". |
| |
"a.timestamp "; |
| |
if (defined($student)) { |
| |
$request .= "FROM $student_table AS b ". |
| |
"LEFT JOIN $performance_table AS a ON b.student_id=a.student_id ". |
| |
# "LEFT JOIN $part_table AS c ON c.part_id = a.part_id ". |
| |
"LEFT JOIN $symb_table AS d ON d.symb_id = a.symb_id ". |
| |
"WHERE student='$student'"; |
| |
if (defined($symb) && $symb ne '') { |
| |
$request .= " AND d.symb=".$dbh->quote($symb); |
| |
} |
| |
} elsif (defined($symb) && $symb ne '') { |
| |
$request .= "FROM $symb_table as d ". |
| |
"LEFT JOIN $performance_table AS a ON d.symb_id=a.symb_id ". |
| |
# "LEFT JOIN $part_table AS c ON c.part_id = a.part_id ". |
| |
"LEFT JOIN $student_table AS b ON b.student_id = a.student_id ". |
| |
"WHERE symb='".$dbh->quote($symb)."'"; |
| |
} |
| |
my $starttime = Time::HiRes::time; |
| |
my $rows_retrieved = 0; |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
if ($sth->err()) { |
| |
&Apache::lonnet::logthis("Unable to execute MySQL request:"); |
| |
&Apache::lonnet::logthis("\n".$request."\n"); |
| |
&Apache::lonnet::logthis("error is:".$sth->errstr()); |
| |
return undef; |
| |
} |
| |
foreach my $row (@{$sth->fetchall_arrayref}) { |
| |
$rows_retrieved++; |
| |
my ($symb,$part,$solved,$tries,$awarded,$award,$awarddetail,$time) = |
| |
(@$row); |
| |
my $base = 'resource.'.$part; |
| |
$studentdata->{$symb}->{$base.'.solved'} = $solved; |
| |
$studentdata->{$symb}->{$base.'.tries'} = $tries; |
| |
$studentdata->{$symb}->{$base.'.awarded'} = $awarded; |
| |
$studentdata->{$symb}->{$base.'.award'} = $award; |
| |
$studentdata->{$symb}->{$base.'.awarddetail'} = $awarddetail; |
| |
$studentdata->{$symb}->{'timestamp'} = $time if (defined($time) && $time ne ''); |
| |
} |
| |
## Get misc parameters |
| |
$request = 'SELECT c.symb,a.parameter,a.value '. |
| |
"FROM $student_table AS b ". |
| |
"LEFT JOIN $parameters_table AS a ON b.student_id=a.student_id ". |
| |
"LEFT JOIN $symb_table AS c ON c.symb_id = a.symb_id ". |
| |
"WHERE student='$student'"; |
| |
if (defined($symb) && $symb ne '') { |
| |
$request .= " AND c.symb=".$dbh->quote($symb); |
| |
} |
| |
$sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
if ($sth->err()) { |
| |
&Apache::lonnet::logthis("Unable to execute MySQL request:"); |
| |
&Apache::lonnet::logthis("\n".$request."\n"); |
| |
&Apache::lonnet::logthis("error is:".$sth->errstr()); |
| |
if (defined($symb) && $symb ne '') { |
| |
$studentdata = $studentdata->{$symb}; |
| |
} |
| |
return $studentdata; |
| |
} |
| |
# |
| |
foreach my $row (@{$sth->fetchall_arrayref}) { |
| |
$rows_retrieved++; |
| |
my ($symb,$parameter,$value) = (@$row); |
| |
$studentdata->{$symb}->{$parameter} = $value; |
| |
} |
| |
# |
| |
if (defined($symb) && $symb ne '') { |
| |
$studentdata = $studentdata->{$symb}; |
| |
} |
| |
return $studentdata; |
| |
} |
| |
|
| $courseID: The id of the course |
|
| |
|
| $lastDownloadTime: This is the date stamp for when this information was |
sub get_current_state { |
| last gathered. If it is set to Not downloaded, it will gather the data |
my ($sname,$sdom,$symb,$courseid,$forcedownload)=@_; |
| again, though it currently does not remove the old data. |
# |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
# |
| |
return () if (! defined($sname) || ! defined($sdom)); |
| |
# |
| |
my ($status,$data) = &ensure_current_data($sname,$sdom,$courseid); |
| |
# &Apache::lonnet::logthis |
| |
# ('sname = '.$sname. |
| |
# ' domain = '.$sdom. |
| |
# ' status = '.$status. |
| |
# ' data is '.(defined($data)?'defined':'undefined')); |
| |
# while (my ($symb,$hash) = each(%$data)) { |
| |
# &Apache::lonnet::logthis($symb."\n----------------------------------"); |
| |
# while (my ($key,$value) = each (%$hash)) { |
| |
# &Apache::lonnet::logthis(" ".$key." = ".$value); |
| |
# } |
| |
# } |
| |
# |
| |
if (defined($data) && defined($symb) && ref($data->{$symb})) { |
| |
return %{$data->{$symb}}; |
| |
} elsif (defined($data) && ! defined($symb) && ref($data)) { |
| |
return %$data; |
| |
} |
| |
if ($status eq 'no data') { |
| |
return (); |
| |
} else { |
| |
if ($status ne 'okay' && $status ne '') { |
| |
&Apache::lonnet::logthis('status = '.$status); |
| |
return ('error: '.$status,undef); |
| |
} |
| |
my $returnhash = &get_student_data_from_performance_cache($sname,$sdom, |
| |
$symb,$courseid); |
| |
return %$returnhash if (defined($returnhash)); |
| |
} |
| |
return (); |
| |
} |
| |
|
| $WhatIWant: Regular expression used to get selected data with dump |
|
| |
|
| Output: \%courseData |
sub get_problem_statistics { |
| |
my ($Sections,$Groups,$status,$symb,$part,$courseid,$starttime,$endtime) = @_; |
| |
return if (! defined($symb) || ! defined($part)); |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
# |
| |
&setup_table_names($courseid); |
| |
my $symb_id = &get_symb_id($symb); |
| |
my $part_id = &get_part_id($part); |
| |
my $stats_table = &temp_table_name($courseid,'problem_stats'); |
| |
# |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
return undef if (! defined($dbh)); |
| |
# |
| |
# Clean out the table |
| |
$dbh->do('DROP TABLE '.$stats_table); # May return an error |
| |
my $request = |
| |
'CREATE TEMPORARY TABLE '.$stats_table.' '. |
| |
'SELECT a.student_id,a.solved,a.award,a.awarded,a.tries '. |
| |
'FROM '.$performance_table.' AS a '; |
| |
# |
| |
# See if we need to include some requirements on the students |
| |
if ((defined($Sections) && lc($Sections->[0]) ne 'all') || |
| |
(defined($status) && lc($status) ne 'any')) { |
| |
$request .= 'NATURAL LEFT JOIN '.$student_table.' AS b '; |
| |
} |
| |
my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d'); |
| |
if (defined($groups_join)) { |
| |
$request .= $groups_join; |
| |
} |
| |
$request .= ' WHERE a.symb_id='.$symb_id.' AND a.part_id='.$part_id; |
| |
# |
| |
# Limit the students included to those specified |
| |
my ($section_limits,$enrollment_limits)= |
| |
&limit_by_section_and_status($Sections,$status,'b'); |
| |
# |
| |
# Limit by starttime and endtime |
| |
my $time_requirements = undef; |
| |
if (defined($starttime)) { |
| |
$time_requirements .= 'a.timestamp>='.$starttime; |
| |
if (defined($endtime)) { |
| |
$time_requirements .= ' AND a.timestamp<='.$endtime; |
| |
} |
| |
} elsif (defined($endtime)) { |
| |
$time_requirements .= 'a.timestamp<='.$endtime; |
| |
} |
| |
if (defined($time_requirements)) { |
| |
$request .= ' AND '.$time_requirements; |
| |
} |
| |
if (defined($section_limits)) { |
| |
$request .= ' AND '.$section_limits; |
| |
} |
| |
if (defined($enrollment_limits)) { |
| |
$request .= ' AND '.$enrollment_limits; |
| |
} |
| |
# Limit by group, as required |
| |
if (defined($group_limits)) { |
| |
$request .= ' AND '.$group_limits; |
| |
} |
| |
# |
| |
# Finally, execute the request to create the temporary table |
| |
$dbh->do($request); |
| |
# |
| |
# Collect the first suite of statistics |
| |
$request = 'SELECT COUNT(*),SUM(tries),'. |
| |
'AVG(tries),STD(tries) '. |
| |
'FROM '.$stats_table; |
| |
my ($num,$tries,$mean,$STD) = &execute_SQL_request |
| |
($dbh,$request); |
| |
# |
| |
$request = 'SELECT MAX(tries),MIN(tries) FROM '.$stats_table. |
| |
' WHERE awarded>0'; |
| |
if (defined($time_requirements)) { |
| |
$request .= ' AND '.$time_requirements; |
| |
} |
| |
my ($max,$min) = &execute_SQL_request($dbh,$request); |
| |
# |
| |
$request = 'SELECT SUM(awarded) FROM '.$stats_table; |
| |
if (defined($time_requirements)) { |
| |
$request .= ' AND '.$time_requirements; |
| |
} |
| |
my ($Solved) = &execute_SQL_request($dbh,$request); |
| |
# |
| |
$request = 'SELECT SUM(awarded) FROM '.$stats_table. |
| |
" WHERE solved='correct_by_override'"; |
| |
if (defined($time_requirements)) { |
| |
$request .= ' AND '.$time_requirements; |
| |
} |
| |
my ($solved) = &execute_SQL_request($dbh,$request); |
| |
# |
| |
$Solved -= $solved; |
| |
# |
| |
$num = 0 if (! defined($num)); |
| |
$tries = 0 if (! defined($tries)); |
| |
$max = 0 if (! defined($max)); |
| |
$min = 0 if (! defined($min)); |
| |
$STD = 0 if (! defined($STD)); |
| |
$Solved = 0 if (! defined($Solved) || $Solved < 0); |
| |
$solved = 0 if (! defined($solved)); |
| |
# |
| |
# Compute the more complicated statistics |
| |
my $DegOfDiff = 'nan'; |
| |
$DegOfDiff = 1-($Solved)/$tries if ($tries>0); |
| |
# |
| |
my $SKEW = 'nan'; |
| |
my $wrongpercent = 0; |
| |
my $numwrong = 'nan'; |
| |
if ($num > 0) { |
| |
($SKEW) = &execute_SQL_request($dbh,'SELECT SQRT(SUM('. |
| |
'POWER(tries - '.$STD.',3)'. |
| |
'))/'.$num.' FROM '.$stats_table); |
| |
$numwrong = $num-$Solved; |
| |
$wrongpercent=int(10*100*$numwrong/$num)/10; |
| |
} |
| |
# |
| |
# Drop the temporary table |
| |
$dbh->do('DROP TABLE '.$stats_table); # May return an error |
| |
# |
| |
# Return result |
| |
return { num_students => $num, |
| |
tries => $tries, |
| |
max_tries => $max, |
| |
min_tries => $min, |
| |
mean_tries => $mean, |
| |
std_tries => $STD, |
| |
skew_tries => $SKEW, |
| |
num_solved => $Solved, |
| |
num_override => $solved, |
| |
num_wrong => $numwrong, |
| |
per_wrong => $wrongpercent, |
| |
deg_of_diff => $DegOfDiff }; |
| |
} |
| |
|
| \%courseData: A hash pointer to the raw data from the students course |
## |
| database. |
## This is a helper for get_statistics |
| |
sub execute_SQL_request { |
| |
my ($dbh,$request)=@_; |
| |
# &Apache::lonnet::logthis($request); |
| |
my $sth = $dbh->prepare($request); |
| |
if (!$sth) { |
| |
die($dbh->errstr . " SQL: $request"); |
| |
} |
| |
$sth->execute(); |
| |
my $row = $sth->fetchrow_arrayref(); |
| |
if (ref($row) eq 'ARRAY' && scalar(@$row)>0) { |
| |
return @$row; |
| |
} |
| |
return (); |
| |
} |
| |
|
| =back |
|
| |
|
| =cut |
sub populate_weight_table { |
| |
my ($courseid) = @_; |
| |
if (! defined($courseid)) { |
| |
$courseid = $env{'request.course.id'}; |
| |
} |
| |
# |
| |
&setup_table_names($courseid); |
| |
my $navmap = Apache::lonnavmaps::navmap->new(); |
| |
if (!defined($navmap)) { |
| |
&Apache::lonnet::logthis('loncoursedata::populate_weight_table:'.$/. |
| |
' unable to get navmaps resource'.$/. |
| |
' '.join(' ',(caller))); |
| |
return; |
| |
} |
| |
my @sequences = $navmap->retrieveResources(undef, |
| |
sub { shift->is_map(); },1,0,1); |
| |
my @resources; |
| |
foreach my $seq (@sequences) { |
| |
push(@resources,$navmap->retrieveResources($seq, |
| |
sub {shift->is_problem();}, |
| |
0,0,0)); |
| |
} |
| |
if (! scalar(@resources)) { |
| |
&Apache::lonnet::logthis('loncoursedata::populate_weight_table:'.$/. |
| |
' no resources returned for '.$courseid); |
| |
return; |
| |
} |
| |
# Since we use lonnet::EXT to retrieve problem weights, |
| |
# to ensure current data we must clear the caches out. |
| |
&Apache::lonnet::clear_EXT_cache_status(); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
my $request = 'INSERT IGNORE INTO '.$weight_table. |
| |
"(symb_id,part_id,weight) VALUES "; |
| |
my $weight; |
| |
foreach my $res (@resources) { |
| |
my $symb_id = &get_symb_id($res->symb); |
| |
foreach my $part (@{$res->parts}) { |
| |
my $part_id = &get_part_id($part); |
| |
$weight = &Apache::lonnet::EXT('resource.'.$part.'.weight', |
| |
$res->symb, |
| |
undef,undef,undef); |
| |
if (!defined($weight) || ($weight eq '')) { |
| |
$weight=1; |
| |
} |
| |
$request .= "('".$symb_id."','".$part_id."','".$weight."'),"; |
| |
} |
| |
} |
| |
$request =~ s/(,)$//; |
| |
# &Apache::lonnet::logthis('request = '.$/.$request); |
| |
$dbh->do($request); |
| |
if ($dbh->err()) { |
| |
&Apache::lonnet::logthis("error ".$dbh->errstr(). |
| |
" occurred executing \n". |
| |
$request); |
| |
} |
| |
return; |
| |
} |
| |
|
| sub DownloadCourseInformation { |
sub limit_by_start_end_time { |
| my ($namedata,$courseID,$lastDownloadTime,$WhatIWant)=@_; |
my ($starttime,$endtime,$table) = @_; |
| my %courseData; |
my $time_requirements = undef; |
| my ($name,$domain) = split(/\:/,$namedata); |
if (defined($starttime)) { |
| |
$time_requirements .= $table.".timestamp>='".$starttime."'"; |
| |
if (defined($endtime)) { |
| |
$time_requirements .= " AND ".$table.".timestamp<='".$endtime."'"; |
| |
} |
| |
} elsif (defined($endtime)) { |
| |
$time_requirements .= $table.".timestamp<='".$endtime."'"; |
| |
} |
| |
return $time_requirements; |
| |
} |
| |
|
| my $modifiedTime = &Apache::lonnet::GetFileTimestamp($domain, $name, |
|
| $courseID.'.db', |
|
| $Apache::lonnet::perlvar{'lonUsersDir'}); |
|
| |
|
| if($lastDownloadTime >= $modifiedTime && $modifiedTime >= 0) { |
sub limit_by_section_and_status { |
| # Data is not gathered so return UpToDate as true. This |
my ($Sections,$enrollment,$tablename) = @_; |
| # will be interpreted in ProcessClasslist |
my $student_requirements = undef; |
| $courseData{$namedata.':lastDownloadTime'}=time; |
if ( (defined($Sections) && $Sections->[0] ne 'all')) { |
| $courseData{$namedata.':UpToDate'} = 'true'; |
$student_requirements = '('. |
| return \%courseData; |
join(' OR ', map { $tablename.".section='".$_."'" } @$Sections |
| |
).')'; |
| |
} |
| |
my $enrollment_requirements=undef; |
| |
if (defined($enrollment) && $enrollment ne 'Any') { |
| |
my $now = time(); |
| |
if ( $enrollment eq 'Future' ) { |
| |
$enrollment_requirements = |
| |
"( $tablename.start > $now AND ". |
| |
"( $tablename.end = 0 OR $tablename.end > $now))"; |
| |
} elsif ( $enrollment eq 'Active' ) { |
| |
$enrollment_requirements = |
| |
"(( $tablename.start = 0 OR $tablename.start < $now ) AND ". |
| |
" ( $tablename.end = 0 OR $tablename.end > $now ))"; |
| |
} elsif ( $enrollment eq 'Expired' ) { |
| |
$enrollment_requirements = |
| |
"(( $tablename.start < $now ) AND ". |
| |
" ( $tablename.end < $now ))"; |
| |
} |
| } |
} |
| |
return ($student_requirements,$enrollment_requirements); |
| |
} |
| |
|
| |
|
| |
|
| # Download course data |
sub limit_by_group { |
| if(!defined($WhatIWant)) { |
my ($Groups,$stutable,$grptable,$stugrptab) = @_; |
| # set the regular expression to everything by setting it to period |
my $groups_join = undef; |
| $WhatIWant = '.'; |
my $group_limits = undef; |
| |
if ( (defined($Groups) && $Groups->[0] ne 'all')) { |
| |
$groups_join = |
| |
' LEFT JOIN '.$students_groups_table. |
| |
' AS '.$stugrptab.' ON '. |
| |
$stugrptab.'.student_id = '.$stutable.'.student_id'. |
| |
' LEFT JOIN '.$groupnames_table. |
| |
' AS '.$grptable.' ON '. |
| |
$stugrptab.'.group_id = '.$grptable.'.group_id '; |
| |
$group_limits = |
| |
' ('. |
| |
join(' OR ', map { "$grptable.groupname='".$_."'" } @$Groups |
| |
).')'; |
| } |
} |
| %courseData=&Apache::lonnet::dump($courseID, $domain, $name, $WhatIWant); |
return ($groups_join,$group_limits); |
| $courseData{'UpToDate'} = 'false'; |
} |
| $courseData{'lastDownloadTime'}=time; |
|
| |
|
| |
sub RNK_student { return 0; }; |
| |
sub RNK_score { return 1; }; |
| |
|
| my %newData; |
sub rank_students_by_scores_on_resources { |
| foreach (keys(%courseData)) { |
my ($resources,$Sections,$Groups,$enrollment,$courseid,$starttime,$endtime, |
| # need to have the keys to be prepended with the name:domain of the |
$has_award_for) = @_; |
| # student to reduce data collision later. |
return if (! defined($resources) || ! ref($resources) eq 'ARRAY'); |
| $newData{$namedata.':'.$_} = $courseData{$_}; |
if (! defined($courseid)) { |
| |
$courseid = $env{'request.course.id'}; |
| |
} |
| |
# |
| |
&setup_table_names($courseid); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
my ($section_limits,$enrollment_limits)= |
| |
&limit_by_section_and_status($Sections,$enrollment,'b'); |
| |
my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d'); |
| |
my $symb_limits = '('.join(' OR ',map {'a.symb_id='.&get_symb_id($_); |
| |
} @$resources |
| |
).')'; |
| |
my ($award_col, $award_join, $award_clause) = ('', '', ''); |
| |
if ($has_award_for) { |
| |
my $resource_id = &get_symb_id($has_award_for); |
| |
$award_col = ", perf.awarded"; |
| |
$award_join = "LEFT JOIN $performance_table AS perf ON perf.symb_id" |
| |
." = $resource_id AND perf.student_id = b.student_id "; |
| |
$award_clause = "AND perf.awarded IS NOT NULL"; |
| |
} |
| |
my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a'); |
| |
my $request = "SELECT b.student,SUM(a.awarded*w.weight) AS score " |
| |
."$award_col FROM $performance_table AS a ". |
| |
"NATURAL LEFT JOIN $weight_table AS w ". |
| |
"LEFT JOIN $student_table AS b ON a.student_id=b.student_id ". |
| |
"$award_join $groups_join "; |
| |
my $limits; |
| |
if (defined($section_limits)) { |
| |
$limits .= $section_limits.' AND '; |
| |
} |
| |
if (defined($enrollment_limits)) { |
| |
$limits .= $enrollment_limits.' AND '; |
| |
} |
| |
if (defined($time_limits)) { |
| |
$limits .= $time_limits.' AND '; |
| |
} |
| |
if ($symb_limits ne '()') { |
| |
$limits .= $symb_limits.' AND '; |
| |
} |
| |
if (defined($group_limits)) { |
| |
$limits .= $group_limits.' AND '; |
| |
} |
| |
if ($limits) { |
| |
$limits =~ s/( AND )$//; # Remove extra conjunction |
| |
$request .= "WHERE $limits"; |
| |
} |
| |
$request .= " $award_clause GROUP BY a.student_id ORDER BY score"; |
| |
#&Apache::lonnet::logthis('request = '.$/.$request); |
| |
my $sth = $dbh->prepare($request) or die "Can't prepare $request"; |
| |
$sth->execute(); |
| |
my $rows = $sth->fetchall_arrayref(); |
| |
return ($rows); |
| |
} |
| |
|
| |
sub get_sum_of_scores { |
| |
my ($symb,$part,$students,$courseid,$starttime,$endtime) = @_; |
| |
if (! defined($courseid)) { |
| |
$courseid = $env{'request.course.id'}; |
| |
} |
| |
if (defined($students) && |
| |
((@$students == 0) || |
| |
(@$students == 1 && (! defined($students->[0]) || |
| |
$students->[0] eq '')) |
| |
) |
| |
){ |
| |
undef($students); |
| |
} |
| |
# |
| |
&setup_table_names($courseid); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a'); |
| |
my $request = 'SELECT SUM(a.awarded*w.weight),SUM(w.weight) FROM '. |
| |
$performance_table.' AS a '. |
| |
'NATURAL LEFT JOIN '.$weight_table.' AS w '; |
| |
$request .= 'WHERE a.symb_id='.&get_symb_id($symb). |
| |
' AND a.part_id='.&get_part_id($part); |
| |
if (defined($time_limits)) { |
| |
$request .= ' AND '.$time_limits; |
| |
} |
| |
if (defined($students)) { |
| |
$request .= ' AND ('. |
| |
join(' OR ',map {'a.student_id='.&get_student_id(split(':',$_)); |
| |
} @$students). |
| |
')'; |
| |
} |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
my $rows = $sth->fetchrow_arrayref(); |
| |
if ($dbh->err) { |
| |
&Apache::lonnet::logthis('error 1 = '.$dbh->errstr()); |
| |
&Apache::lonnet::logthis('prepared then executed, fetchrow_arrayrefed'. |
| |
$/.$request); |
| |
return (undef,undef); |
| } |
} |
| |
return ($rows->[0],$rows->[1]); |
| |
} |
| |
|
| |
|
| return \%newData; |
sub score_stats { |
| |
my ($Sections,$Groups,$enrollment,$symbs,$starttime,$endtime,$courseid)=@_; |
| |
if (! defined($courseid)) { |
| |
$courseid = $env{'request.course.id'}; |
| |
} |
| |
# |
| |
&setup_table_names($courseid); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
# |
| |
my ($section_limits,$enrollment_limits)= |
| |
&limit_by_section_and_status($Sections,$enrollment,'b'); |
| |
my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d'); |
| |
my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a'); |
| |
my @Symbids = map { &get_symb_id($_); } @{$symbs}; |
| |
# |
| |
my $stats_table = &temp_table_name($courseid,'problem_stats'); |
| |
my $symb_restriction = join(' OR ',map {'a.symb_id='.$_;} @Symbids); |
| |
my $request = 'DROP TABLE '.$stats_table; |
| |
$dbh->do($request); |
| |
$request = |
| |
'CREATE TEMPORARY TABLE '.$stats_table.' '. |
| |
'SELECT a.student_id,'. |
| |
'SUM(a.awarded*w.weight) AS score FROM '. |
| |
$performance_table.' AS a '. |
| |
'NATURAL LEFT JOIN '.$weight_table.' AS w '. |
| |
'LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '. |
| |
$groups_join; |
| |
my $limit = ' WHERE ('.$symb_restriction.')'; |
| |
if ($time_limits) { |
| |
$limit .= ' AND '.$time_limits; |
| |
} |
| |
if ($section_limits) { |
| |
$limit .= ' AND '.$section_limits; |
| |
} |
| |
if ($enrollment_limits) { |
| |
$limit .= ' AND '.$enrollment_limits; |
| |
} |
| |
if ($group_limits) { |
| |
$limit .= ' AND '.$group_limits; |
| |
} |
| |
$request .= $limit.' GROUP BY a.student_id'; |
| |
# &Apache::lonnet::logthis('request = '.$/.$request); |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
$request = |
| |
'SELECT AVG(score),STD(score),MAX(score),MIN(score),COUNT(score) '. |
| |
'FROM '.$stats_table; |
| |
my ($ave,$std,$max,$min,$count) = &execute_SQL_request($dbh,$request); |
| |
# &Apache::lonnet::logthis('request = '.$/.$request); |
| |
|
| |
$request = 'SELECT SUM(weight) FROM '.$weight_table. |
| |
' AS a WHERE ('.$symb_restriction.')'; |
| |
my ($max_possible) = &execute_SQL_request($dbh,$request); |
| |
# &Apache::lonnet::logthis('request = '.$/.$request); |
| |
return($min,$max,$ave,$std,$count,$max_possible); |
| } |
} |
| |
|
| # ----- END DOWNLOAD INFORMATION --------------------------------------- |
|
| |
|
| =pod |
|
| |
|
| =head1 PROCESSING FUNCTIONS |
sub count_stats { |
| |
my ($Sections,$Groups,$enrollment,$symbs,$starttime,$endtime,$courseid)=@_; |
| |
if (! defined($courseid)) { |
| |
$courseid = $env{'request.course.id'}; |
| |
} |
| |
# |
| |
&setup_table_names($courseid); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
# |
| |
my ($section_limits,$enrollment_limits)= |
| |
&limit_by_section_and_status($Sections,$enrollment,'b'); |
| |
my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d'); |
| |
my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a'); |
| |
my @Symbids = map { &get_symb_id($_); } @{$symbs}; |
| |
# |
| |
my $stats_table = &temp_table_name($courseid,'problem_stats'); |
| |
my $symb_restriction = join(' OR ',map {'a.symb_id='.$_;} @Symbids); |
| |
my $request = 'DROP TABLE '.$stats_table; |
| |
$dbh->do($request); |
| |
$request = |
| |
'CREATE TEMPORARY TABLE '.$stats_table.' '. |
| |
'SELECT a.student_id,'. |
| |
'SUM(a.awarded) AS count FROM '. |
| |
$performance_table.' AS a '. |
| |
'LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '. |
| |
$groups_join; |
| |
my $limit = ' WHERE ('.$symb_restriction.')'; |
| |
if ($time_limits) { |
| |
$limit .= ' AND '.$time_limits; |
| |
} |
| |
if ($section_limits) { |
| |
$limit .= ' AND '.$section_limits; |
| |
} |
| |
if ($enrollment_limits) { |
| |
$limit .= ' AND '.$enrollment_limits; |
| |
} |
| |
if ($group_limits) { |
| |
$limit .= ' AND '.$group_limits; |
| |
} |
| |
$request .= $limit.' GROUP BY a.student_id'; |
| |
# &Apache::lonnet::logthis('request = '.$/.$request); |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
$request = |
| |
'SELECT AVG(count),STD(count),MAX(count),MIN(count),COUNT(count) '. |
| |
'FROM '.$stats_table; |
| |
my ($ave,$std,$max,$min,$count) = &execute_SQL_request($dbh,$request); |
| |
# &Apache::lonnet::logthis('request = '.$/.$request); |
| |
return($min,$max,$ave,$std,$count); |
| |
} |
| |
|
| These functions process all the data for all the students. Also, they |
|
| are the functions that access the cache database for writing the majority of |
|
| the time. The downloading and caching were separated to reduce problems |
|
| with stopping downloading then can not tie hash to database later. |
|
| |
|
| =cut |
sub get_student_data { |
| |
my ($students,$courseid) = @_; |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
&setup_table_names($courseid); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
return undef if (! defined($dbh)); |
| |
my $request = 'SELECT '. |
| |
'student_id, student '. |
| |
'FROM '.$student_table; |
| |
if (defined($students)) { |
| |
$request .= ' WHERE ('. |
| |
join(' OR ', map {'student_id='. |
| |
&get_student_id($_->{'username'}, |
| |
$_->{'domain'}) |
| |
} @$students |
| |
).')'; |
| |
} |
| |
$request.= ' ORDER BY student_id'; |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
if ($dbh->err) { |
| |
&Apache::lonnet::logthis('error 2 = '.$dbh->errstr()); |
| |
&Apache::lonnet::logthis('prepared then executed '.$/.$request); |
| |
return undef; |
| |
} |
| |
my $dataset = $sth->fetchall_arrayref(); |
| |
if (ref($dataset) eq 'ARRAY' && scalar(@$dataset)>0) { |
| |
return $dataset; |
| |
} |
| |
} |
| |
|
| # ----- PROCESSING FUNCTIONS --------------------------------------- |
sub RD_student_id { return 0; } |
| |
sub RD_awarddetail { return 1; } |
| |
sub RD_response_eval { return 2; } |
| |
sub RD_response_eval_2 { return 3; } |
| |
sub RD_submission { return 4; } |
| |
sub RD_timestamp { return 5; } |
| |
sub RD_tries { return 6; } |
| |
sub RD_sname { return 7; } |
| |
|
| |
sub get_response_data { |
| |
my ($Sections,$Groups,$enrollment,$symb,$response,$courseid) = @_; |
| |
return undef if (! defined($symb) || |
| |
! defined($response)); |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
# |
| |
&setup_table_names($courseid); |
| |
my $symb_id = &get_symb_id($symb); |
| |
if (! defined($symb_id)) { |
| |
&Apache::lonnet::logthis('Unable to find symb for '.$symb.' in '.$courseid); |
| |
return undef; |
| |
} |
| |
my $response_id = &get_part_id($response); |
| |
if (! defined($response_id)) { |
| |
&Apache::lonnet::logthis('Unable to find id for '.$response.' in '.$courseid); |
| |
return undef; |
| |
} |
| |
# |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
return undef if (! defined($dbh)); |
| |
# |
| |
my ($student_requirements,$enrollment_requirements) = |
| |
&limit_by_section_and_status($Sections,$enrollment,'d'); |
| |
my ($groups_join,$group_limits) = &limit_by_group($Groups,'d','e','f'); |
| |
my $request = 'SELECT '. |
| |
'a.student_id, a.awarddetail, a.response_specific_value, '. |
| |
'a.response_specific_value_2, a.submission, b.timestamp, '. |
| |
'c.tries, d.student '. |
| |
'FROM '.$fulldump_response_table.' AS a '. |
| |
'LEFT JOIN '.$fulldump_timestamp_table.' AS b '. |
| |
'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '. |
| |
'a.transaction = b.transaction '. |
| |
'LEFT JOIN '.$fulldump_part_table.' AS c '. |
| |
'ON a.symb_id=c.symb_id AND a.student_id=c.student_id AND '. |
| |
'a.part_id=c.part_id AND a.transaction = c.transaction '. |
| |
'LEFT JOIN '.$student_table.' AS d '. |
| |
'ON a.student_id=d.student_id '. |
| |
$groups_join; |
| |
my $limit = ' WHERE '. |
| |
'a.symb_id='.$symb_id.' AND a.response_id='.$response_id; |
| |
if (defined($student_requirements)) { |
| |
$limit .= ' AND '.$student_requirements; |
| |
} |
| |
if (defined($enrollment_requirements)) { |
| |
$limit .= ' AND '.$enrollment_requirements; |
| |
} |
| |
if (defined($group_limits)) { |
| |
$limit .= ' AND '.$group_limits; |
| |
} |
| |
$request .= $limit.' ORDER BY b.timestamp'; |
| |
# &Apache::lonnet::logthis("request =\n".$request); |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
if ($dbh->err) { |
| |
&Apache::lonnet::logthis('error 3 = '.$dbh->errstr()); |
| |
&Apache::lonnet::logthis('prepared then executed '.$/.$request); |
| |
return undef; |
| |
} |
| |
my $dataset = $sth->fetchall_arrayref(); |
| |
if (ref($dataset) eq 'ARRAY' && scalar(@$dataset)>0) { |
| |
# Clear the \'s from around the submission |
| |
for (my $i =0;$i<scalar(@$dataset);$i++) { |
| |
$dataset->[$i]->[&RD_submission()] =~ s/(\'$|^\')//g; |
| |
} |
| |
return $dataset; |
| |
} |
| |
} |
| |
|
| =pod |
|
| |
|
| =item &ProcessTopResourceMap() |
sub RDs_awarddetail { return 3; } |
| |
sub RDs_submission { return 2; } |
| |
sub RDs_timestamp { return 1; } |
| |
sub RDs_tries { return 0; } |
| |
sub RDs_awarded { return 4; } |
| |
sub RDs_response_eval { return 5; } |
| |
sub RDs_response_eval_2 { return 6; } |
| |
sub RDs_part_award { return 7; } |
| |
|
| |
sub get_response_data_by_student { |
| |
my ($student,$symb,$response,$courseid) = @_; |
| |
return undef if (! defined($symb) || |
| |
! defined($response)); |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
# |
| |
&setup_table_names($courseid); |
| |
my $symb_id = &get_symb_id($symb); |
| |
my $response_id = &get_part_id($response); |
| |
# |
| |
my $student_id = &get_student_id($student->{'username'}, |
| |
$student->{'domain'}); |
| |
# |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
return undef if (! defined($dbh)); |
| |
my $request = 'SELECT '. |
| |
'c.tries, b.timestamp, a.submission, a.awarddetail, c.awarded, '. |
| |
'a.response_specific_value, a.response_specific_value_2, c.award '. |
| |
'FROM '.$fulldump_response_table.' AS a '. |
| |
'LEFT JOIN '.$fulldump_timestamp_table.' AS b '. |
| |
'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '. |
| |
'a.transaction = b.transaction '. |
| |
'LEFT JOIN '.$fulldump_part_table.' AS c '. |
| |
'ON a.symb_id=c.symb_id AND a.student_id=c.student_id AND '. |
| |
'a.part_id=c.part_id AND a.transaction = c.transaction '. |
| |
'LEFT JOIN '.$student_table.' AS d '. |
| |
'ON a.student_id=d.student_id '. |
| |
'LEFT JOIN '.$performance_table.' AS e '. |
| |
'ON a.symb_id=e.symb_id AND a.part_id=e.part_id AND '. |
| |
'a.student_id=e.student_id AND c.tries=e.tries '. |
| |
'WHERE '. |
| |
'a.symb_id='.$symb_id.' AND a.response_id='.$response_id. |
| |
' AND a.student_id='.$student_id.' ORDER BY b.timestamp'; |
| |
# &Apache::lonnet::logthis("request =\n".$request); |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
if ($dbh->err) { |
| |
&Apache::lonnet::logthis('error 4 = '.$dbh->errstr()); |
| |
&Apache::lonnet::logthis('prepared then executed '.$/.$request); |
| |
return undef; |
| |
} |
| |
my $dataset = $sth->fetchall_arrayref(); |
| |
if (ref($dataset) eq 'ARRAY' && scalar(@$dataset)>0) { |
| |
# Clear the \'s from around the submission |
| |
for (my $i =0;$i<scalar(@$dataset);$i++) { |
| |
$dataset->[$i]->[&RDs_submission] =~ s/(\'$|^\')//g; |
| |
} |
| |
return $dataset; |
| |
} |
| |
return undef; # error occurred |
| |
} |
| |
|
| Trace through the "big hash" created in rat/lonuserstate.pm::loadmap. |
sub RT_student_id { return 0; } |
| Basically, this function organizes a subset of the data and stores it in |
sub RT_awarded { return 1; } |
| cached data. The data stored is the problems, sequences, sequence titles, |
sub RT_tries { return 2; } |
| parts of problems, and their ordering. Column width information is also |
sub RT_timestamp { return 3; } |
| partially handled here on a per sequence basis. |
|
| |
sub get_response_time_data { |
| |
my ($sections,$groups,$enrollment,$symb,$part,$courseid) = @_; |
| |
return undef if (! defined($symb) || |
| |
! defined($part)); |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
# |
| |
&setup_table_names($courseid); |
| |
my $symb_id = &get_symb_id($symb); |
| |
if (! defined($symb_id)) { |
| |
&Apache::lonnet::logthis('Unable to find symb for '.$symb.' in '.$courseid); |
| |
return undef; |
| |
} |
| |
my $part_id = &get_part_id($part); |
| |
if (! defined($part_id)) { |
| |
&Apache::lonnet::logthis('Unable to find id for '.$part.' in '.$courseid); |
| |
return undef; |
| |
} |
| |
# |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
return undef if (! defined($dbh)); |
| |
my ($student_requirements,$enrollment_requirements) = |
| |
&limit_by_section_and_status($sections,$enrollment,'d'); |
| |
my ($groups_join,$group_limits) = &limit_by_group($groups,'d','e','f'); |
| |
my $request = 'SELECT '. |
| |
'a.student_id, a.awarded, a.tries, b.timestamp '. |
| |
'FROM '.$fulldump_part_table.' AS a '. |
| |
'LEFT JOIN '.$fulldump_timestamp_table.' AS b '. |
| |
'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '. |
| |
'a.transaction = b.transaction '. |
| |
'LEFT JOIN '.$student_table.' as d '. |
| |
'ON a.student_id=d.student_id '. |
| |
$groups_join; |
| |
my $limit = ' WHERE '. |
| |
'a.symb_id='.$symb_id.' AND a.part_id='.$part_id; |
| |
if (defined($student_requirements)) { |
| |
$limit .= ' AND '.$student_requirements; |
| |
} |
| |
if (defined($enrollment_requirements)) { |
| |
$limit .= ' AND '.$enrollment_requirements; |
| |
} |
| |
if (defined($group_limits)) { |
| |
$limit .= ' AND '.$group_limits; |
| |
} |
| |
$request .= $limit.' ORDER BY b.timestamp'; |
| |
# &Apache::lonnet::logthis("request =\n".$request); |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
if ($dbh->err) { |
| |
&Apache::lonnet::logthis('error 5 = '.$dbh->errstr()); |
| |
&Apache::lonnet::logthis('prepared then executed '.$/.$request); |
| |
return undef; |
| |
} |
| |
my $dataset = $sth->fetchall_arrayref(); |
| |
if (ref($dataset) eq 'ARRAY' && scalar(@$dataset)>0) { |
| |
return $dataset; |
| |
} |
| |
|
| =over 4 |
} |
| |
|
| |
sub get_student_scores { |
| |
my ($sections,$groups,$Symbs,$enrollment,$courseid,$starttime,$endtime) = @_; |
| |
$courseid = $env{'request.course.id'} if (! defined($courseid)); |
| |
&setup_table_names($courseid); |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
return (undef) if (! defined($dbh)); |
| |
my $tmptable = &temp_table_name($courseid,'temp_'.time); |
| |
my $request = 'DROP TABLE IF EXISTS '.$tmptable; |
| |
# &Apache::lonnet::logthis('request = '.$/.$request); |
| |
$dbh->do($request); |
| |
# |
| |
my $symb_requirements; |
| |
if (defined($Symbs) && @$Symbs) { |
| |
$symb_requirements = '('. |
| |
join(' OR ', map{ "(a.symb_id='".&get_symb_id($_->{'symb'}). |
| |
"' AND a.part_id='".&get_part_id($_->{'part'}). |
| |
"')" |
| |
} @$Symbs).')'; |
| |
} |
| |
# |
| |
my ($student_requirements,$enrollment_requirements) = |
| |
&limit_by_section_and_status($sections,$enrollment,'b'); |
| |
# |
| |
my ($groups_join,$group_limits) = &limit_by_group($groups,'b','d','e'); |
| |
my $time_requirements = &limit_by_start_end_time($starttime,$endtime,'a'); |
| |
## |
| |
$request = 'CREATE TEMPORARY TABLE IF NOT EXISTS '.$tmptable. |
| |
' SELECT a.student_id,SUM(a.awarded*c.weight) AS score FROM '. |
| |
$performance_table.' AS a '; |
| |
$request .= "LEFT JOIN ".$weight_table.' AS c ON a.symb_id=c.symb_id AND a.part_id=c.part_id '; |
| |
if (defined($student_requirements) || defined($enrollment_requirements)) { |
| |
$request .= ' LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '; |
| |
} |
| |
if (defined($groups_join)) { |
| |
$request .= $groups_join; |
| |
} |
| |
if (defined($symb_requirements) || |
| |
defined($student_requirements) || |
| |
defined($enrollment_requirements) || |
| |
defined($group_limits) ) { |
| |
$request .= ' WHERE '; |
| |
} |
| |
if (defined($symb_requirements)) { |
| |
$request .= $symb_requirements.' AND '; |
| |
} |
| |
if (defined($student_requirements)) { |
| |
$request .= $student_requirements.' AND '; |
| |
} |
| |
if (defined($enrollment_requirements)) { |
| |
$request .= $enrollment_requirements.' AND '; |
| |
} |
| |
if (defined($time_requirements)) { |
| |
$request .= $time_requirements.' AND '; |
| |
} |
| |
$request =~ s/ AND $//; # Strip of the trailing ' AND '. |
| |
$request .= ' GROUP BY a.student_id'; |
| |
# &Apache::lonnet::logthis("request = \n".$request); |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
if ($dbh->err) { |
| |
&Apache::lonnet::logthis('error 6 = '.$dbh->errstr()); |
| |
&Apache::lonnet::logthis('prepared then executed '.$/.$request); |
| |
return undef; |
| |
} |
| |
$request = 'SELECT score,COUNT(*) FROM '.$tmptable.' GROUP BY score'; |
| |
# &Apache::lonnet::logthis("request = \n".$request); |
| |
$sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
if ($dbh->err) { |
| |
&Apache::lonnet::logthis('error 7 = '.$dbh->errstr()); |
| |
&Apache::lonnet::logthis('prepared then executed '.$/.$request); |
| |
return undef; |
| |
} |
| |
my $dataset = $sth->fetchall_arrayref(); |
| |
return $dataset; |
| |
} |
| |
|
| Input: $cache, $c |
|
| |
|
| $cache: A pointer to a hash to store the information |
|
| |
|
| $c: The connection class used to determine if an abort has been sent to the |
sub setup_table_names { |
| browser |
my ($courseid) = @_; |
| |
if (! defined($courseid)) { |
| |
$courseid = $env{'request.course.id'}; |
| |
} |
| |
# |
| |
if (! defined($current_course) || $current_course ne $courseid) { |
| |
# Clear out variables |
| |
$have_read_part_table = 0; |
| |
undef(%ids_by_part); |
| |
undef(%parts_by_id); |
| |
$have_read_symb_table = 0; |
| |
undef(%ids_by_symb); |
| |
undef(%symbs_by_id); |
| |
$have_read_student_table = 0; |
| |
undef(%ids_by_student); |
| |
undef(%students_by_id); |
| |
$have_read_groupnames_table = 0; |
| |
undef(%ids_by_groupname); |
| |
# |
| |
$current_course = $courseid; |
| |
} |
| |
# |
| |
# Set up database names |
| |
my $base_id = 'md5_'.&Digest::MD5::md5_hex($courseid); |
| |
$symb_table = $base_id.'_'.'symb'; |
| |
$part_table = $base_id.'_'.'part'; |
| |
$student_table = $base_id.'_'.'student'; |
| |
$groupnames_table = $base_id.'_'.'groupnames'; |
| |
$students_groups_table = $base_id.'_'.'studentgroups'; |
| |
$performance_table = $base_id.'_'.'performance'; |
| |
$parameters_table = $base_id.'_'.'parameters'; |
| |
$fulldump_part_table = $base_id.'_'.'partdata'; |
| |
$fulldump_response_table = $base_id.'_'.'responsedata'; |
| |
$fulldump_timestamp_table = $base_id.'_'.'timestampdata'; |
| |
$weight_table = $base_id.'_'.'weight'; |
| |
# |
| |
@Tables = ( |
| |
$symb_table, |
| |
$part_table, |
| |
$student_table, |
| |
$groupnames_table, |
| |
$students_groups_table, |
| |
$performance_table, |
| |
$parameters_table, |
| |
$fulldump_part_table, |
| |
$fulldump_response_table, |
| |
$fulldump_timestamp_table, |
| |
$weight_table, |
| |
); |
| |
return; |
| |
} |
| |
|
| Output: A string that contains an error message or "OK" if everything went |
sub temp_table_name { |
| smoothly. |
my ($courseid,$affix) = @_; |
| |
my $base_id = 'md5_'.&Digest::MD5::md5_hex($courseid); |
| |
return $base_id.'_'.$affix; |
| |
} |
| |
|
| =back |
|
| |
|
| =cut |
} # End scope of table identifiers |
| |
|
| |
|
| sub ProcessTopResourceMap { |
|
| my ($cache,$c)=@_; |
sub CL_SDOM { return 0; } |
| my %hash; |
sub CL_SNAME { return 1; } |
| my $fn=$ENV{'request.course.fn'}; |
sub CL_END { return 2; } |
| if(-e "$fn.db") { |
sub CL_START { return 3; } |
| my $tieTries=0; |
sub CL_ID { return 4; } |
| while($tieTries < 3) { |
sub CL_SECTION { return 5; } |
| if($c->aborted()) { |
sub CL_FULLNAME { return 6; } |
| return; |
sub CL_STATUS { return 7; } |
| |
sub CL_TYPE { return 8; } |
| |
sub CL_LOCKEDTYPE { return 9; } |
| |
sub CL_CREDITS { return 10; } |
| |
sub CL_GROUP { return 11; } |
| |
sub CL_PERMANENTEMAIL { return 12; } |
| |
sub CL_ROLE { return 13; } |
| |
sub CL_EXTENT { return 14; } |
| |
sub CL_PHOTO { return 15; } |
| |
sub CL_THUMBNAIL { return 16; } |
| |
sub CL_AUTHORQUOTA { return 17; } |
| |
sub CL_AUTHORUSAGE { return 18; } |
| |
|
| |
sub get_classlist { |
| |
my ($cdom,$cnum) = @_; |
| |
my $cid = $cdom.'_'.$cnum; |
| |
if (!defined($cdom) || !defined($cnum)) { |
| |
$cid = $env{'request.course.id'}; |
| |
$cdom = $env{'course.'.$cid.'.domain'}; |
| |
$cnum = $env{'course.'.$cid.'.num'}; |
| |
} |
| |
my $now = time; |
| |
# |
| |
my %classlist=&Apache::lonnet::dump('classlist',$cdom,$cnum); |
| |
while (my ($student,$info) = each(%classlist)) { |
| |
if ($student =~ /^(con_lost|error|no_such_host)/i) { |
| |
&Apache::lonnet::logthis('get_classlist error for '.$cid.':'.$student); |
| |
return undef; |
| |
} |
| |
my ($sname,$sdom) = split(/:/,$student); |
| |
my @Values = split(/:/,$info); |
| |
my ($end,$start,$id,$section,$fullname,$type,$lockedtype,$credits); |
| |
if (@Values > 2) { |
| |
($end,$start,$id,$section,$fullname,$type,$lockedtype,$credits) = @Values; |
| |
} else { # We have to get the data ourselves |
| |
($end,$start) = @Values; |
| |
$section = &Apache::lonnet::getsection($sdom,$sname,$cid); |
| |
my %info=&Apache::lonnet::get('environment', |
| |
['firstname','middlename', |
| |
'lastname','generation','id'], |
| |
$sdom, $sname); |
| |
my ($tmp) = keys(%info); |
| |
if ($tmp =~/^(con_lost|error|no_such_host)/i) { |
| |
$fullname = 'not available'; |
| |
$id = 'not available'; |
| |
&Apache::lonnet::logthis('unable to retrieve environment '. |
| |
'for '.$sname.':'.$sdom); |
| |
} else { |
| |
$fullname = &Apache::lonnet::format_name(@info{qw/firstname middlename lastname generation/},'lastname'); |
| |
$id = $info{'id'}; |
| } |
} |
| if(tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) { |
# Update the classlist with this students information |
| last; |
if ($fullname ne 'not available') { |
| } |
my $enrolldata = join(':',$end,$start,$id,$section,$fullname); |
| $tieTries++; |
my $reply=&Apache::lonnet::cput('classlist', |
| sleep 1; |
{$student => $enrolldata}, |
| } |
$cdom,$cnum); |
| if($tieTries >= 3) { |
if ($reply !~ /^(ok|delayed)/) { |
| return 'Coursemap undefined.'; |
&Apache::lonnet::logthis('Unable to update classlist for '. |
| |
'student '.$sname.':'.$sdom. |
| |
' error:'.$reply); |
| |
} |
| |
} |
| |
} |
| |
my $status='Expired'; |
| |
if(((!$end) || $now < $end) && ((!$start) || ($now > $start))) { |
| |
$status='Active'; |
| } |
} |
| |
if(($now < $start) && ((!$end) || $now < $end )) { |
| |
$status='Future'; |
| |
} |
| |
$classlist{$student} = |
| |
[$sdom,$sname,$end,$start,$id,$section,$fullname,$status,$type, |
| |
$lockedtype,$credits]; |
| |
} |
| |
if (wantarray()) { |
| |
return (\%classlist,['domain','username','end','start','id', |
| |
'section','fullname','status','type', |
| |
'lockedtype','credits']); |
| } else { |
} else { |
| return 'Can not open Coursemap.'; |
return \%classlist; |
| } |
} |
| |
} |
| |
|
| # Initialize state machine. Set information pointing to top level map. |
sub get_group_memberships { |
| my (@sequences, @currentResource, @finishResource); |
my ($classlist,$keylist,$cdom,$cnum) = @_; |
| my ($currentSequence, $currentResourceID, $lastResourceID); |
|
| |
|
| $currentResourceID=$hash{'ids_/res/'.$ENV{'request.course.uri'}}; |
|
| push(@currentResource, $currentResourceID); |
|
| $lastResourceID=-1; |
|
| $currentSequence=-1; |
|
| my $topLevelSequenceNumber = $currentSequence; |
|
| |
|
| my %sequenceRecord; |
|
| while(1) { |
|
| if($c->aborted()) { |
|
| last; |
|
| } |
|
| # HANDLE NEW SEQUENCE! |
|
| #if page || sequence |
|
| if(defined($hash{'map_pc_'.$hash{'src_'.$currentResourceID}}) && |
|
| !defined($sequenceRecord{$currentResourceID})) { |
|
| $sequenceRecord{$currentResourceID}++; |
|
| push(@sequences, $currentSequence); |
|
| push(@currentResource, $currentResourceID); |
|
| push(@finishResource, $lastResourceID); |
|
| |
|
| $currentSequence=$hash{'map_pc_'.$hash{'src_'.$currentResourceID}}; |
|
| |
|
| # Mark sequence as containing problems. If it doesn't, then |
|
| # it will be removed when processing for this sequence is |
|
| # complete. This allows the problems in a sequence |
|
| # to be outputed before problems in the subsequences |
|
| if(!defined($cache->{'orderedSequences'})) { |
|
| $cache->{'orderedSequences'}=$currentSequence; |
|
| } else { |
|
| $cache->{'orderedSequences'}.=':'.$currentSequence; |
|
| } |
|
| |
|
| $lastResourceID=$hash{'map_finish_'. |
|
| $hash{'src_'.$currentResourceID}}; |
|
| $currentResourceID=$hash{'map_start_'. |
|
| $hash{'src_'.$currentResourceID}}; |
|
| |
|
| if(!($currentResourceID) || !($lastResourceID)) { |
|
| $currentSequence=pop(@sequences); |
|
| $currentResourceID=pop(@currentResource); |
|
| $lastResourceID=pop(@finishResource); |
|
| if($currentSequence eq $topLevelSequenceNumber) { |
|
| last; |
|
| } |
|
| } |
|
| next; |
|
| } |
|
| |
|
| # Handle gradable resources: exams, problems, etc |
return ({},{}) if (!ref($classlist) || !ref($keylist)); |
| $currentResourceID=~/(\d+)\.(\d+)/; |
|
| my $partA=$1; |
|
| my $partB=$2; |
|
| if($hash{'src_'.$currentResourceID}=~ |
|
| /\.(problem|exam|quiz|assess|survey|form)$/ && |
|
| $partA eq $currentSequence && |
|
| !defined($sequenceRecord{$currentSequence.':'. |
|
| $currentResourceID})) { |
|
| $sequenceRecord{$currentSequence.':'.$currentResourceID}++; |
|
| my $Problem = &Apache::lonnet::symbclean( |
|
| &Apache::lonnet::declutter($hash{'map_id_'.$partA}). |
|
| '___'.$partB.'___'. |
|
| &Apache::lonnet::declutter($hash{'src_'. |
|
| $currentResourceID})); |
|
| |
|
| $cache->{$currentResourceID.':problem'}=$Problem; |
|
| if(!defined($cache->{$currentSequence.':problems'})) { |
|
| $cache->{$currentSequence.':problems'}=$currentResourceID; |
|
| } else { |
|
| $cache->{$currentSequence.':problems'}.= |
|
| ':'.$currentResourceID; |
|
| } |
|
| |
|
| my $meta=$hash{'src_'.$currentResourceID}; |
my $cid = $cdom.'_'.$cnum; |
| # $cache->{$currentResourceID.':title'}= |
if (!defined($cdom) || !defined($cnum)) { |
| # &Apache::lonnet::metdata($meta,'title'); |
$cid = $env{'request.course.id'}; |
| $cache->{$currentResourceID.':title'}= |
$cdom = $env{'course.'.$cid.'.domain'}; |
| $hash{'title_'.$currentResourceID}; |
$cnum = $env{'course.'.$cid.'.num'}; |
| $cache->{$currentResourceID.':source'}= |
} |
| $hash{'src_'.$currentResourceID}; |
my (%classgroups,%studentgroups); |
| |
my $now = time; |
| # Get Parts for problem |
my $access_end = $env{'course.'.$cid.'.default_enrollment_end_date'}; |
| my %beenHere; |
my %curr_groups =&Apache::longroup::coursegroups($cdom,$cnum); |
| foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) { |
if (%curr_groups) { |
| if(/^\w+response_\d+.*/) { |
my $grpindex = &CL_GROUP(); |
| my (undef, $partId, $responseId) = split(/_/,$_); |
my %groupmemberhash = |
| if($beenHere{'p:'.$partId} == 0) { |
&Apache::lonnet::get_group_membership($cdom,$cnum); |
| $beenHere{'p:'.$partId}++; |
foreach my $student (keys(%{$classlist})) { |
| if(!defined($cache->{$currentSequence.':'. |
%{$classgroups{$student}} = (); |
| $currentResourceID.':parts'})) { |
my $hasgroup = 0; |
| $cache->{$currentSequence.':'.$currentResourceID. |
foreach my $status ('previous','future','active','aftercourse') { |
| ':parts'}=$partId; |
%{$classgroups{$student}{$status}} = (); |
| } else { |
} |
| $cache->{$currentSequence.':'.$currentResourceID. |
foreach my $group (keys(%curr_groups)) { |
| ':parts'}.=':'.$partId; |
if (defined($groupmemberhash{$group.':'.$student})) { |
| } |
my ($end,$start) = split(/:/,$groupmemberhash{$group.':'. |
| } |
$student}); |
| if($beenHere{'r:'.$partId.':'.$responseId} == 0) { |
if ($start == -1) { |
| $beenHere{'r:'.$partId.':'.$responseId}++; |
next; |
| if(!defined($cache->{$currentSequence.':'. |
} else { |
| $currentResourceID.':'.$partId. |
$studentgroups{$group} ++; |
| ':responseIDs'})) { |
$hasgroup = 1; |
| $cache->{$currentSequence.':'.$currentResourceID. |
if ($end && $end < $now) { |
| ':'.$partId.':responseIDs'}=$responseId; |
$classgroups{$student}{'previous'}{$group} = |
| } else { |
$groupmemberhash{$group.':'.$student}; |
| $cache->{$currentSequence.':'.$currentResourceID. |
if ($classlist->{$student}[&CL_STATUS()] eq 'Expired') { |
| ':'.$partId.':responseIDs'}.=':'. |
if ($access_end && $access_end < $now) { |
| $responseId; |
if ($access_end - $end < 86400) { |
| } |
$classgroups{$student}{'aftercourse'}{$group} = $groupmemberhash{$group.':'.$student}; |
| } |
} |
| if(/^optionresponse/ && |
} |
| $beenHere{'o:'.$partId.':'.$currentResourceID} == 0) { |
} |
| $beenHere{'o:'.$partId.$currentResourceID}++; |
} elsif ($now > $start) { |
| if(defined($cache->{'OptionResponses'})) { |
if (!$end || $end > $now) { |
| $cache->{'OptionResponses'}.= ':::'. |
$classgroups{$student}{'active'}{$group} = |
| $currentSequence.':'.$currentResourceID.':'. |
$groupmemberhash{$group.':'.$student}; |
| $partId.':'.$responseId; |
} |
| } else { |
} else { |
| $cache->{'OptionResponses'}= $currentSequence.':'. |
$classgroups{$student}{'future'}{$group} = |
| $currentResourceID.':'. |
$groupmemberhash{$group.':'.$student}; |
| $partId.':'.$responseId; |
|
| } |
} |
| } |
} |
| } |
} |
| } |
} |
| } |
if (!$hasgroup) { |
| |
$studentgroups{'none'} ++; |
| # if resource == finish resource, then it is the end of a sequence/page |
} else { |
| if($currentResourceID eq $lastResourceID) { |
$classlist->{$student}->[$grpindex] = join(',', |
| # pop off last resource of sequence |
sort(keys(%{$classgroups{$student}{'active'}}))); |
| $currentResourceID=pop(@currentResource); |
|
| $lastResourceID=pop(@finishResource); |
|
| |
|
| if(defined($cache->{$currentSequence.':problems'})) { |
|
| # Capture sequence information here |
|
| $cache->{$currentSequence.':title'}= |
|
| $hash{'title_'.$currentResourceID}; |
|
| $cache->{$currentSequence.':source'}= |
|
| $hash{'src_'.$currentResourceID}; |
|
| |
|
| my $totalProblems=0; |
|
| foreach my $currentProblem (split(/\:/, |
|
| $cache->{$currentSequence. |
|
| ':problems'})) { |
|
| foreach (split(/\:/,$cache->{$currentSequence.':'. |
|
| $currentProblem. |
|
| ':parts'})) { |
|
| $totalProblems++; |
|
| } |
|
| } |
|
| my @titleLength=split(//,$cache->{$currentSequence. |
|
| ':title'}); |
|
| # $extra is 3 for problems correct and 3 for space |
|
| # between problems correct and problem output |
|
| my $extra = 6; |
|
| if(($totalProblems + $extra) > (scalar @titleLength)) { |
|
| $cache->{$currentSequence.':columnWidth'}= |
|
| $totalProblems + $extra; |
|
| } else { |
|
| $cache->{$currentSequence.':columnWidth'}= |
|
| (scalar @titleLength); |
|
| } |
|
| } else { |
|
| # Remove sequence from list, if it contains no problems to |
|
| # display. |
|
| $cache->{'orderedSequences'}=~s/$currentSequence//; |
|
| $cache->{'orderedSequences'}=~s/::/:/g; |
|
| $cache->{'orderedSequences'}=~s/^:|:$//g; |
|
| } |
} |
| |
|
| $currentSequence=pop(@sequences); |
|
| if($currentSequence eq $topLevelSequenceNumber) { |
|
| last; |
|
| } |
|
| } |
} |
| |
} |
| # MOVE!!! |
return (\%classgroups,\%studentgroups); |
| # move to next resource |
} |
| unless(defined($hash{'to_'.$currentResourceID})) { |
|
| # big problem, need to handle. Next is probably wrong |
sub get_students_groups { |
| my $errorMessage = 'Big problem in '; |
my ($student,$enrollment_status,$classgroups) = @_; |
| $errorMessage .= 'loncoursedata::ProcessTopLevelMap.'; |
my @studentsgroups = (); |
| $errorMessage .= ' bighash to_$currentResourceID not defined!'; |
if (ref($$classgroups{$student}{'active'}) eq 'HASH') { |
| &Apache::lonnet::logthis($errorMessage); |
push(@studentsgroups,keys(%{$$classgroups{$student}{'active'}})); |
| last; |
} |
| } |
if ($enrollment_status eq 'Any') { |
| my @nextResources=(); |
foreach my $status ('previous','future') { |
| foreach (split(/\,/,$hash{'to_'.$currentResourceID})) { |
if (ref($$classgroups{$student}{$status}) eq 'HASH') { |
| if(!defined($sequenceRecord{$currentSequence.':'. |
push(@studentsgroups,keys(%{$$classgroups{$student}{$status}})); |
| $hash{'goesto_'.$_}})) { |
|
| push(@nextResources, $hash{'goesto_'.$_}); |
|
| } |
} |
| } |
} |
| push(@currentResource, @nextResources); |
} else { |
| # Set the next resource to be processed |
if (ref($$classgroups{$student}{'aftercourse'}) eq 'HASH') { |
| $currentResourceID=pop(@currentResource); |
push(@studentsgroups,keys(%{$$classgroups{$student}{'aftercourse'}})); |
| |
} |
| } |
} |
| |
return @studentsgroups; |
| |
} |
| |
|
| unless (untie(%hash)) { |
|
| &Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
| "Could not untie coursemap $fn (browse)". |
|
| ".</font>"); |
|
| } |
|
| |
|
| return 'OK'; |
# ----- END HELPER FUNCTIONS -------------------------------------------- |
| } |
|
| |
1; |
| |
__END__ |
| |
|
| |
|
| =pod |
=pod |
| |
|
| =item &ProcessClasslist() |
=head1 NAME |
| |
|
| Taking the class list dumped from &DownloadClasslist(), all the |
Apache::loncoursedata |
| students and their non-class information is processed using the |
|
| &ProcessStudentInformation() function. A date stamp is also recorded for |
|
| when the data was processed. |
|
| |
|
| Takes data downloaded for a student and breaks it up into managable pieces and |
|
| stored in cache data. The username, domain, class related date, PID, |
|
| full name, and section are all processed here. |
|
| |
|
| =over 4 |
=head1 SYNOPSIS |
| |
|
| Input: $cache, $classlist, $courseID, $ChartDB, $c |
Set of functions that download and process student and course information. |
| |
|
| $cache: A hash pointer to store the data |
=head1 PACKAGES USED |
| |
|
| $classlist: The hash of data collected about a student from |
Apache::lonnet |
| &DownloadClasslist(). The hash contains a list of students, a pointer |
Apache::longroup |
| to a hash of student information for each student, and each students section |
Time::HiRes |
| number. |
Apache::lonmysql |
| |
LONCAPA |
| |
Digest::MD5 |
| |
|
| |
=head1 DOWNLOAD INFORMATION |
| |
|
| $courseID: The course ID |
This section contains all the functions that get data from other servers |
| |
and/or itself. |
| |
|
| $ChartDB: The name of the cache database file. |
|
| |
|
| $c: The connection class used to determine if an abort has been sent to the |
|
| browser |
|
| |
|
| Output: @names |
=head1 LOCAL DATA CACHING SUBROUTINES |
| |
|
| @names: An array of students whose information has been processed, and are to |
The local caching is done using MySQL. There is no fall-back implementation |
| be considered in an arbitrary order. |
if MySQL is not running. |
| |
|
| =back |
The programmers interface is to call &get_current_state() or some other |
| |
primary interface subroutine (described below). The internals of this |
| |
storage system are documented here. |
| |
|
| =cut |
There are six tables used to store student performance data (the results of |
| |
a dumpcurrent). Each of these tables is created in MySQL with a name of |
| |
$courseid_*****, where ***** is 'symb', 'part', or whatever is appropriate |
| |
for the table. The tables and their purposes are described below. |
| |
|
| sub ProcessClasslist { |
Some notes before we get started. |
| my ($cache,$classlist,$courseID,$c)=@_; |
|
| my @names=(); |
|
| |
|
| $cache->{'ClasslistTimeStamp'}=$classlist->{'lastDownloadTime'}; |
|
| if($classlist->{'UpToDate'} eq 'true') { |
|
| return split(/:::/,$cache->{'NamesOfStudents'});; |
|
| } |
|
| |
|
| foreach my $name (keys(%$classlist)) { |
Each table must have a PRIMARY KEY, which is a column or set of columns which |
| if($name =~ /\:section/ || $name =~ /\:studentInformation/ || |
will serve to uniquely identify a row of data. NULL is not allowed! |
| $name eq '' || $name eq 'UpToDate' || $name eq 'lastDownloadTime') { |
|
| next; |
|
| } |
|
| if($c->aborted()) { |
|
| return (); |
|
| } |
|
| my $studentInformation = $classlist->{$name.':studentInformation'}, |
|
| my $sectionData = $classlist->{$name.':sections'}, |
|
| my $date = $classlist->{$name}, |
|
| my ($studentName,$studentDomain) = split(/\:/,$name); |
|
| |
|
| $cache->{$name.':username'}=$studentName; |
|
| $cache->{$name.':domain'}=$studentDomain; |
|
| # Initialize timestamp for student |
|
| if(!defined($cache->{$name.':lastDownloadTime'})) { |
|
| $cache->{$name.':lastDownloadTime'}='Not downloaded'; |
|
| $cache->{$name.':updateTime'}=' Not updated'; |
|
| } |
|
| |
|
| my $error = 0; |
|
| foreach(keys(%$studentInformation)) { |
|
| if(/^(con_lost|error|no_such_host)/i) { |
|
| $cache->{$name.':error'}= |
|
| 'Could not download student environment data.'; |
|
| $cache->{$name.':fullname'}=''; |
|
| $cache->{$name.':id'}=''; |
|
| $error = 1; |
|
| } |
|
| } |
|
| next if($error); |
|
| push(@names,$name); |
|
| $cache->{$name.':fullname'}=&ProcessFullName( |
|
| $studentInformation->{'lastname'}, |
|
| $studentInformation->{'generation'}, |
|
| $studentInformation->{'firstname'}, |
|
| $studentInformation->{'middlename'}); |
|
| $cache->{$name.':id'}=$studentInformation->{'id'}; |
|
| |
|
| my ($end, $start)=split(':',$date); |
|
| $courseID=~s/\_/\//g; |
|
| $courseID=~s/^(\w)/\/$1/; |
|
| |
|
| my $sec=''; |
|
| foreach my $key (keys (%$sectionData)) { |
|
| my $value = $sectionData->{$key}; |
|
| if ($key=~/^$courseID(?:\/)*(\w+)*\_st$/) { |
|
| my $tempsection=$1; |
|
| if($key eq $courseID.'_st') { |
|
| $tempsection=''; |
|
| } |
|
| my ($dummy,$roleend,$rolestart)=split(/\_/,$value); |
|
| if($roleend eq $end && $rolestart eq $start) { |
|
| $sec = $tempsection; |
|
| last; |
|
| } |
|
| } |
|
| } |
|
| |
|
| my $status='Expired'; |
INDEXes work best on integer data. |
| if(((!$end) || time < $end) && ((!$start) || (time > $start))) { |
|
| $status='Active'; |
|
| } |
|
| $cache->{$name.':Status'}=$status; |
|
| $cache->{$name.':section'}=$sec; |
|
| |
|
| if($sec eq '' || !defined($sec) || $sec eq ' ') { |
JOIN is used to combine data from many tables into one output. |
| $sec = 'none'; |
|
| } |
|
| if(defined($cache->{'sectionList'})) { |
|
| if($cache->{'sectionList'} !~ /(^$sec:|^$sec$|:$sec$|:$sec:)/) { |
|
| $cache->{'sectionList'} .= ':'.$sec; |
|
| } |
|
| } else { |
|
| $cache->{'sectionList'} = $sec; |
|
| } |
|
| } |
|
| |
|
| $cache->{'ClasslistTimestamp'}=time; |
lonmysql.pm is used for some of the interface, specifically the table creation |
| $cache->{'NamesOfStudents'}=join(':::',@names); |
calls. The inserts are done in bulk by directly calling the database handler. |
| |
The SELECT ... JOIN statement used to retrieve the data does not have an |
| |
interface in lonmysql.pm and I shudder at the thought of writing one. |
| |
|
| return @names; |
=head2 Table Descriptions |
| } |
|
| |
|
| =pod |
=over 4 |
| |
|
| =item &ProcessStudentData() |
=head2 Tables used to store meta information |
| |
|
| Takes the course data downloaded for a student in |
The following tables hold data required to keep track of the current status |
| &DownloadCourseInformation() and breaks it up into key value pairs |
of a students data in the tables or to look up the students data in the tables. |
| to be stored in the cached data. The keys are comprised of the |
|
| $username:$domain:$keyFromCourseDatabase. The student username:domain is |
|
| stored away signifying that the students information has been downloaded and |
|
| can be reused from cached data. |
|
| |
|
| =over 4 |
=over 4 |
| |
|
| Input: $cache, $courseData, $name |
=item C<$symb_table> |
| |
|
| |
The symb_table has two columns. The first is a 'symb_id' and the second |
| |
is the text name for the 'symb' (limited to 64k). The 'symb_id' is generated |
| |
automatically by MySQL so inserts should be done on this table with an |
| |
empty first element. This table has its PRIMARY KEY on the 'symb_id'. |
| |
|
| |
=item C<$part_table> |
| |
|
| |
The part_table has two columns. The first is a 'part_id' and the second |
| |
is the text name for the 'part' (limited to 100 characters). The 'part_id' is |
| |
generated automatically by MySQL so inserts should be done on this table with |
| |
an empty first element. This table has its PRIMARY KEY on the 'part' (100 |
| |
characters) and a KEY on 'part_id'. |
| |
|
| $cache: A hash pointer to store data |
=item C<$student_table> |
| |
|
| $courseData: A hash pointer that points to the course data downloaded for a |
The student_table has 7 columns. The first is a 'student_id' assigned by |
| student. |
MySQL. The second is 'student' which is username:domain. The third through |
| |
fifth are 'section', 'status' (enrollment status), and 'classification' |
| |
(to be used in the future). The sixth and seventh ('updatetime' and |
| |
'fullupdatetime') contain the time of last update and full update of student |
| |
data. This table has its PRIMARY KEY on the 'student_id' column and is indexed |
| |
on 'student', 'section', and 'status'. |
| |
|
| $name: username:domain |
=item C<$groupnames_table> |
| |
|
| Output: None |
The groupnames_table has 2 columns. The first is a 'group_id' assigned by |
| |
MySQL. The second is 'groupname' which is the name of the group in the course. |
| |
|
| *NOTE: There is no output, but an error message is stored away in the cache |
=item C<$students_groups_table> |
| data. This is checked in &FormatStudentData(). The key username:domain:error |
|
| will only exist if an error occured. The error is an error from |
The students_groups_table has 2 columns. The first is the 'student_id', and the |
| &DownloadCourseInformation(). |
second is the 'group_id'. These two columns comprise the PRIMARY KEY for this |
| |
table, as an individual student may be affiliated with more than one group at |
| |
any time. This table is indexed on both student_id and group_id. |
| |
|
| |
=back |
| |
|
| |
=head2 Tables used to store current status data |
| |
|
| |
The following tables store data only about the students current status on |
| |
a problem, meaning only the data related to the last attempt on a problem. |
| |
|
| |
=over 4 |
| |
|
| |
=item C<$performance_table> |
| |
|
| |
The performance_table has 9 columns. The first three are 'symb_id', |
| |
'student_id', and 'part_id'. These comprise the PRIMARY KEY for this table |
| |
and are directly related to the $symb_table, $student_table, and $part_table |
| |
described above. MySQL does better indexing on numeric items than text, |
| |
so we use these three "index tables". The remaining columns are |
| |
'solved', 'tries', 'awarded', 'award', 'awarddetail', and 'timestamp'. |
| |
These are either the MySQL type TINYTEXT or various integers ('tries' and |
| |
'timestamp'). This table has KEYs of 'student_id' and 'symb_id'. |
| |
For use of this table, see the functions described below. |
| |
|
| |
=item C<$parameters_table> |
| |
|
| |
The parameters_table holds the data that does not fit neatly into the |
| |
performance_table. The parameters table has four columns: 'symb_id', |
| |
'student_id', 'parameter', and 'value'. 'symb_id', 'student_id', and |
| |
'parameter' comprise the PRIMARY KEY for this table. 'parameter' is |
| |
limited to 255 characters. 'value' is limited to 64k characters. |
| |
|
| =back |
=back |
| |
|
| =cut |
=head2 Tables used for storing historic data |
| |
|
| sub ProcessStudentData { |
The following tables are used to store almost all of the transactions a student |
| my ($cache,$courseData,$name)=@_; |
has made on a homework problem. See loncapa/docs/homework/datastorage for |
| |
specific information about each of the parameters stored. |
| |
|
| if(!&CheckDateStampError($courseData, $cache, $name)) { |
=over 4 |
| return; |
|
| } |
|
| |
|
| # user name:domain was prepended earlier in DownloadCourseInformation |
=item C<$fulldump_response_table> |
| foreach (keys %$courseData) { |
|
| $cache->{$_}=$courseData->{$_}; |
|
| } |
|
| |
|
| return; |
The response table holds data (documented in loncapa/docs/homework/datastorage) |
| } |
associated with a particular response id which is stored when a student |
| |
attempts a problem. The following are the columns of the table, in order: |
| |
'symb_id','part_id','response_id','student_id','transaction','tries', |
| |
'awarddetail', 'response_specific', 'response_specific_value', |
| |
'response_specific_2', 'response_specific_value_2', and 'submission |
| |
(the text of the students submission). The primary key is based on the |
| |
first five columns listed above. |
| |
|
| |
=item C<$fulldump_part_table()> |
| |
|
| |
The part table holds data (documented in loncapa/docs/homework/datastorage) |
| |
associated with a particular part id which is stored when a student attempts |
| |
a problem. The following are the columns of the table, in order: |
| |
'symb_id','part_id','student_id','transaction','tries','award','awarded', |
| |
and 'previous'. The primary key is based on the first five columns listed |
| |
above. |
| |
|
| |
=item C<$fulldump_timestamp_table()> |
| |
|
| |
The timestamp table holds the timestamps of the transactions which are |
| |
stored in $fulldump_response_table and $fulldump_part_table. This data is |
| |
about both the response and part data. Columns: 'symb_id','student_id', |
| |
'transaction', and 'timestamp'. |
| |
The primary key is based on the first 3 columns. |
| |
|
| |
=item C<$weight_table()> |
| |
|
| |
The weight table holds the weight for the problems used in the class. |
| |
Whereas the weight of a problem can vary by section and student the data |
| |
here is applied to the class as a whole. |
| |
Columns: 'symb_id','part_id','response_id','weight'. |
| |
|
| |
=back |
| |
|
| =pod |
|
| |
|
| =item &ExtractStudentData() |
=head1 IMPORTANT SUBROUTINES |
| |
|
| HISTORY: This function originally existed in every statistics module, |
Here is a brief overview of the subroutines which are likely to be of |
| and performed different tasks, the had some overlap. Due to the need |
interest: |
| for the data from the different modules, they were combined into |
|
| a single function. |
|
| |
|
| This function now extracts all the necessary course data for a student |
|
| from what was downloaded from their homeserver. There is some extra |
|
| time overhead compared to the ProcessStudentInformation function, but |
|
| it would have had to occurred at some point anyways. This is now |
|
| typically called while downloading the data it will process. It is |
|
| the brother function to ProcessStudentInformation. |
|
| |
|
| =over 4 |
=over 4 |
| |
|
| Input: $input, $output, $data, $name |
=item C<&get_current_state()> |
| |
|
| $input: A hash that contains the input data to be processed |
programmers interface. |
| |
|
| $output: A hash to contain the processed data |
=item C<&init_dbs()> |
| |
|
| $data: A hash containing the information on what is to be |
table creation |
| processed and how (basically). |
|
| |
|
| $name: username:domain |
=item C<&update_student_data()> |
| |
|
| The input is slightly different here, but is quite simple. |
data storage calls |
| It is currently used where the $input, $output, and $data |
|
| can and are often the same hashes, but they do not need |
|
| to be. |
|
| |
|
| Output: None |
=item C<&get_student_data_from_performance_cache()> |
| |
|
| *NOTE: There is no output, but an error message is stored away in the cache |
data retrieval |
| data. This is checked in &FormatStudentData(). The key username:domain:error |
|
| will only exist if an error occured. The error is an error from |
|
| &DownloadCourseInformation(). |
|
| |
|
| =back |
=back |
| |
|
| =cut |
=head1 OTHER SUBROUTINES |
| |
|
| sub ExtractStudentData { |
=over 4 |
| my ($input, $output, $data, $name)=@_; |
|
| |
|
| if(!&CheckDateStampError($input, $data, $name)) { |
=item C<&make_into_hash($values)> |
| return; |
|
| } |
|
| |
|
| my ($username,$domain)=split(':',$name); |
Returns a reference to a hash as described by $values. $values is |
| |
assumed to be the result of |
| |
join(':',map {&escape($_)} %orighash); |
| |
|
| my $Version; |
This is a helper function for get_current_state. |
| my $problemsCorrect = 0; |
|
| my $totalProblems = 0; |
|
| my $problemsSolved = 0; |
|
| my $numberOfParts = 0; |
|
| my $totalAwarded = 0; |
|
| foreach my $sequence (split(':', $data->{'orderedSequences'})) { |
|
| foreach my $problemID (split(':', $data->{$sequence.':problems'})) { |
|
| my $problem = $data->{$problemID.':problem'}; |
|
| my $LatestVersion = $input->{$name.':version:'.$problem}; |
|
| |
|
| # Output dashes for all the parts of this problem if there |
|
| # is no version information about the current problem. |
|
| if(!$LatestVersion) { |
|
| foreach my $part (split(/\:/,$data->{$sequence.':'. |
|
| $problemID. |
|
| ':parts'})) { |
|
| $output->{$name.':'.$problemID.':'.$part.':tries'} = 0; |
|
| $output->{$name.':'.$problemID.':'.$part.':awarded'} = 0; |
|
| $output->{$name.':'.$problemID.':'.$part.':code'} = ' '; |
|
| $totalProblems++; |
|
| } |
|
| $output->{$name.':'.$problemID.':NoVersion'} = 'true'; |
|
| next; |
|
| } |
|
| |
|
| my %partData=undef; |
=item C<&init_dbs()> |
| # Initialize part data, display skips correctly |
|
| # Skip refers to when a student made no submissions on that |
|
| # part/problem. |
|
| foreach my $part (split(/\:/,$data->{$sequence.':'. |
|
| $problemID. |
|
| ':parts'})) { |
|
| $partData{$part.':tries'}=0; |
|
| $partData{$part.':code'}=' '; |
|
| $partData{$part.':awarded'}=0; |
|
| $partData{$part.':timestamp'}=0; |
|
| foreach my $response (split(':', $data->{$sequence.':'. |
|
| $problemID.':'. |
|
| $part.':responseIDs'})) { |
|
| $partData{$part.':'.$response.':submission'}=''; |
|
| } |
|
| } |
|
| |
|
| # Looping through all the versions of each part, starting with the |
Input: course id |
| # oldest version. Basically, it gets the most recent |
|
| # set of grade data for each part. |
|
| my @submissions = (); |
|
| for(my $Version=1; $Version<=$LatestVersion; $Version++) { |
|
| foreach my $part (split(/\:/,$data->{$sequence.':'. |
|
| $problemID. |
|
| ':parts'})) { |
|
| |
|
| if(!defined($input->{"$name:$Version:$problem". |
|
| ":resource.$part.solved"})) { |
|
| # No grade for this submission, so skip |
|
| next; |
|
| } |
|
| |
|
| my $tries=0; |
Output: 0 on success, positive integer on error |
| my $code=' '; |
|
| my $awarded=0; |
|
| |
|
| $tries = $input->{$name.':'.$Version.':'.$problem. |
|
| ':resource.'.$part.'.tries'}; |
|
| $awarded = $input->{$name.':'.$Version.':'.$problem. |
|
| ':resource.'.$part.'.awarded'}; |
|
| |
|
| $partData{$part.':awarded'}=($awarded) ? $awarded : 0; |
|
| $partData{$part.':tries'}=($tries) ? $tries : 0; |
|
| |
|
| $partData{$part.':timestamp'}=$input->{$name.':'.$Version.':'. |
|
| $problem. |
|
| ':timestamp'}; |
|
| if(!$input->{$name.':'.$Version.':'.$problem.':resource.'.$part. |
|
| '.previous'}) { |
|
| foreach my $response (split(':', |
|
| $data->{$sequence.':'. |
|
| $problemID.':'. |
|
| $part.':responseIDs'})) { |
|
| @submissions=($input->{$name.':'.$Version.':'. |
|
| $problem. |
|
| ':resource.'.$part.'.'. |
|
| $response.'.submission'}, |
|
| @submissions); |
|
| } |
|
| } |
|
| |
|
| my $val = $input->{$name.':'.$Version.':'.$problem. |
This routine issues the calls to lonmysql to create the tables used to |
| ':resource.'.$part.'.solved'}; |
store student data. |
| if ($val eq 'correct_by_student') {$code = '*';} |
|
| elsif ($val eq 'correct_by_override') {$code = '+';} |
|
| elsif ($val eq 'incorrect_attempted') {$code = '.';} |
|
| elsif ($val eq 'incorrect_by_override'){$code = '-';} |
|
| elsif ($val eq 'excused') {$code = 'x';} |
|
| elsif ($val eq 'ungraded_attempted') {$code = '#';} |
|
| else {$code = ' ';} |
|
| $partData{$part.':code'}=$code; |
|
| } |
|
| } |
|
| |
|
| foreach my $part (split(/\:/,$data->{$sequence.':'.$problemID. |
item C<&delete_caches()> |
| ':parts'})) { |
|
| $output->{$name.':'.$problemID.':'.$part.':wrong'} = |
|
| $partData{$part.':tries'}; |
|
| |
|
| if($partData{$part.':code'} eq '*') { |
|
| $output->{$name.':'.$problemID.':'.$part.':wrong'}--; |
|
| $problemsCorrect++; |
|
| } elsif($partData{$part.':code'} eq '+') { |
|
| $output->{$name.':'.$problemID.':'.$part.':wrong'}--; |
|
| $problemsCorrect++; |
|
| } |
|
| |
|
| $output->{$name.':'.$problemID.':'.$part.':tries'} = |
This routine drops all the tables associated with a course from the |
| $partData{$part.':tries'}; |
MySQL database. |
| $output->{$name.':'.$problemID.':'.$part.':code'} = |
|
| $partData{$part.':code'}; |
|
| $output->{$name.':'.$problemID.':'.$part.':awarded'} = |
|
| $partData{$part.':awarded'}; |
|
| $totalAwarded += $partData{$part.':awarded'}; |
|
| $output->{$name.':'.$problemID.':'.$part.':timestamp'} = |
|
| $partData{$part.':timestamp'}; |
|
| foreach my $response (split(':', $data->{$sequence.':'. |
|
| $problemID.':'. |
|
| $part.':responseIDs'})) { |
|
| $output->{$name.':'.$problemID.':'.$part.':'.$response. |
|
| ':submission'}=join(':::',@submissions); |
|
| } |
|
| |
|
| if($partData{$part.':code'} ne 'x') { |
Input: course id (optional, determined by environment if omitted) |
| $totalProblems++; |
|
| } |
|
| } |
|
| } |
|
| |
|
| $output->{$name.':'.$sequence.':problemsCorrect'} = $problemsCorrect; |
Returns: nothing |
| $problemsSolved += $problemsCorrect; |
|
| $problemsCorrect=0; |
|
| } |
|
| |
|
| $output->{$name.':problemsSolved'} = $problemsSolved; |
=item C<&get_part_id()> |
| $output->{$name.':totalProblems'} = $totalProblems; |
|
| $output->{$name.':totalAwarded'} = $totalAwarded; |
|
| |
|
| return; |
Get the MySQL id of a problem part string. |
| } |
|
| |
|
| sub LoadDiscussion { |
Input: $part |
| my ($courseID)=@_; |
|
| my %Discuss=(); |
|
| my %contrib=&Apache::lonnet::dump( |
|
| $courseID, |
|
| $ENV{'course.'.$courseID.'.domain'}, |
|
| $ENV{'course.'.$courseID.'.num'}); |
|
| |
|
| #my %contrib=&DownloadCourseInformation($name, $courseID, 0); |
|
| |
|
| foreach my $temp(keys %contrib) { |
|
| if ($temp=~/^version/) { |
|
| my $ver=$contrib{$temp}; |
|
| my ($dummy,$prb)=split(':',$temp); |
|
| for (my $idx=1; $idx<=$ver; $idx++ ) { |
|
| my $name=$contrib{"$idx:$prb:sendername"}; |
|
| $Discuss{"$name:$prb"}=$idx; |
|
| } |
|
| } |
|
| } |
|
| |
|
| return \%Discuss; |
Output: undef on error, integer $part_id on success. |
| } |
|
| |
|
| # ----- END PROCESSING FUNCTIONS --------------------------------------- |
=item C<&get_part()> |
| |
|
| =pod |
Get the string describing a part from the MySQL id of the problem part. |
| |
|
| =head1 HELPER FUNCTIONS |
Input: $part_id |
| |
|
| These are just a couple of functions do various odd and end |
Output: undef on error, $part string on success. |
| jobs. There was also a couple of bulk functions added. These are |
|
| &DownloadStudentCourseData(), &DownloadStudentCourseDataSeparate(), and |
|
| &CheckForResidualDownload(). These functions now act as the interface |
|
| for downloading student course data. The statistical modules should |
|
| no longer make the calls to dump and download and process etc. They |
|
| make calls to these bulk functions to get their data. |
|
| |
|
| =cut |
=item C<&get_symb_id()> |
| |
|
| # ----- HELPER FUNCTIONS ----------------------------------------------- |
Get the MySQL id of a symb. |
| |
|
| sub CheckDateStampError { |
Input: $symb |
| my ($courseData, $cache, $name)=@_; |
|
| if($courseData->{$name.':UpToDate'} eq 'true') { |
|
| $cache->{$name.':lastDownloadTime'} = |
|
| $courseData->{$name.':lastDownloadTime'}; |
|
| if($courseData->{$name.':lastDownloadTime'} eq 'Not downloaded') { |
|
| $cache->{$name.':updateTime'} = ' Not updated'; |
|
| } else { |
|
| $cache->{$name.':updateTime'}= |
|
| localtime($courseData->{$name.':lastDownloadTime'}); |
|
| } |
|
| return 0; |
|
| } |
|
| |
|
| $cache->{$name.':lastDownloadTime'}=$courseData->{$name.':lastDownloadTime'}; |
|
| if($courseData->{$name.':lastDownloadTime'} eq 'Not downloaded') { |
|
| $cache->{$name.':updateTime'} = ' Not updated'; |
|
| } else { |
|
| $cache->{$name.':updateTime'}= |
|
| localtime($courseData->{$name.':lastDownloadTime'}); |
|
| } |
|
| |
|
| if(defined($courseData->{$name.':error'})) { |
Output: undef on error, integer $symb_id on success. |
| $cache->{$name.':error'}=$courseData->{$name.':error'}; |
|
| return 0; |
|
| } |
|
| |
|
| return 1; |
=item C<&get_symb()> |
| } |
|
| |
|
| =pod |
Get the symb associated with a MySQL symb_id. |
| |
|
| =item &ProcessFullName() |
Input: $symb_id |
| |
|
| Takes lastname, generation, firstname, and middlename (or some partial |
Output: undef on error, $symb on success. |
| set of this data) and returns the full name version as a string. Format |
|
| is Lastname generation, firstname middlename or a subset of this. |
|
| |
|
| =cut |
=item C<&get_student_id()> |
| |
|
| sub ProcessFullName { |
Get the MySQL id of a student. |
| my ($lastname, $generation, $firstname, $middlename)=@_; |
|
| my $Str = ''; |
|
| |
|
| if($lastname ne '') { |
|
| $Str .= $lastname.' '; |
|
| if($generation ne '') { |
|
| $Str .= $generation; |
|
| } else { |
|
| chop($Str); |
|
| } |
|
| $Str .= ', '; |
|
| if($firstname ne '') { |
|
| $Str .= $firstname.' '; |
|
| } |
|
| if($middlename ne '') { |
|
| $Str .= $middlename; |
|
| } else { |
|
| chop($Str); |
|
| if($firstname eq '') { |
|
| chop($Str); |
|
| } |
|
| } |
|
| } else { |
|
| if($firstname ne '') { |
|
| $Str .= $firstname.' '; |
|
| } |
|
| if($middlename ne '') { |
|
| $Str .= $middlename.' '; |
|
| } |
|
| if($generation ne '') { |
|
| $Str .= $generation; |
|
| } else { |
|
| chop($Str); |
|
| } |
|
| } |
|
| |
|
| return $Str; |
Input: $sname, $dom |
| } |
|
| |
|
| =pod |
Output: undef on error, integer $student_id on success. |
| |
|
| |
=item C<&get_student()> |
| |
|
| |
Get student username:domain associated with the MySQL student_id. |
| |
|
| |
Input: $student_id |
| |
|
| |
Output: undef on error, string $student (username:domain) on success. |
| |
|
| |
=item C<&clear_internal_caches()> |
| |
|
| |
Causes the internal caches used in get_student_id, get_student, |
| |
get_symb_id, get_symb, get_part_id, and get_part to be undef'd. |
| |
|
| |
Needs to be called before the first operation with the MySQL database |
| |
for a given Apache request. |
| |
|
| |
=item C<&update_full_student_data($sname,$sdom,$courseid)> |
| |
|
| =item &TestCacheData() |
Does a lonnet::dump on a student to populate the courses tables. |
| |
|
| Determine if the cache database can be accessed with a tie. It waits up to |
Input: $sname, $sdom, $courseid |
| ten seconds before returning failure. This function exists to help with |
|
| the problems with stopping the data download. When an abort occurs and the |
Output: $returnstatus |
| user quickly presses a form button and httpd child is created. This |
|
| child needs to wait for the other to finish (hopefully within ten seconds). |
$returnstatus is a string describing any errors that occurred. 'okay' is the |
| |
default. |
| |
|
| |
This subroutine loads a students data using lonnet::dump and inserts |
| |
it into the MySQL database. The inserts are done on three tables, |
| |
$fulldump_response_table, $fulldump_part_table, and $fulldump_timestamp_table. |
| |
The INSERT calls are made directly by this subroutine, not through lonmysql |
| |
because we do a 'bulk'insert which takes advantage of MySQLs non-SQL |
| |
compliant INSERT command to insert multiple rows at a time. |
| |
If anything has gone wrong during this process, $returnstatus is updated with |
| |
a description of the error. |
| |
|
| |
Once the "fulldump" tables are updated, the tables used for chart and |
| |
spreadsheet (which hold only the current state of the student on their |
| |
homework, not historical data) are updated. If all updates have occurred |
| |
successfully, $student_table is updated to reflect the time of the update. |
| |
|
| |
Notice we do not insert the data and immediately query it. This means it |
| |
is possible for there to be data returned this first time that is not |
| |
available the second time. CYA. |
| |
|
| |
|
| |
=item C<&update_student_data()> |
| |
|
| |
Input: $sname, $sdom, $courseid |
| |
|
| |
Output: $returnstatus, \%student_data |
| |
|
| |
$returnstatus is a string describing any errors that occurred. 'okay' is the |
| |
default. |
| |
\%student_data is the data returned by a call to lonnet::currentdump. |
| |
|
| |
This subroutine loads a students data using lonnet::currentdump and inserts |
| |
it into the MySQL database. The inserts are done on two tables, |
| |
$performance_table and $parameters_table. $parameters_table holds the data |
| |
that is not included in $performance_table. See the description of |
| |
$performance_table elsewhere in this file. The INSERT calls are made |
| |
directly by this subroutine, not through lonmysql because we do a 'bulk' |
| |
insert which takes advantage of MySQLs non-SQL compliant INSERT command to |
| |
insert multiple rows at a time. If anything has gone wrong during this |
| |
process, $returnstatus is updated with a description of the error and |
| |
\%student_data is returned. |
| |
|
| |
Notice we do not insert the data and immediately query it. This means it |
| |
is possible for there to be data returned this first time that is not |
| |
available the second time. CYA. |
| |
|
| |
=item &ensure_tables_are_set_up($courseid) |
| |
|
| |
Checks to be sure the MySQL tables for the given class are set up. |
| |
If $courseid is omitted it will be obtained from the environment. |
| |
|
| |
Returns nothing on success and 'error' on failure |
| |
|
| |
|
| |
=item C<&ensure_current_data()> |
| |
|
| |
Input: $sname, $sdom, $courseid |
| |
|
| |
Output: $status, $data |
| |
|
| |
This routine ensures the data for a given student is up to date. |
| |
The $student_table is queried to determine the time of the last update. |
| |
If the students data is out of date, &update_student_data() is called. |
| |
The return values from the call to &update_student_data() are returned. |
| |
|
| |
=item C<&ensure_current_full_data($sname,$sdom,$courseid)> |
| |
|
| |
Input: $sname, $sdom, $courseid |
| |
|
| |
Output: $status |
| |
|
| |
This routine ensures the fulldata (the data from a lonnet::dump, not a |
| |
lonnet::currentdump) for a given student is up to date. |
| |
The $student_table is queried to determine the time of the last update. |
| |
If the students fulldata is out of date, &update_full_student_data() is |
| |
called. |
| |
|
| |
The return value from the call to &update_full_student_data() is returned. |
| |
|
| |
=item C<&get_student_data_from_performance_cache()> |
| |
|
| |
Input: $sname, $sdom, $symb, $courseid |
| |
|
| |
Output: hash reference containing the data for the given student. |
| |
If $symb is undef, all the students data is returned. |
| |
|
| |
This routine is the heart of the local caching system. See the description |
| |
of $performance_table, $symb_table, $student_table, and $part_table. The |
| |
main task is building the MySQL request. The tables appear in the request |
| |
in the order in which they should be parsed by MySQL. When searching |
| |
on a student the $student_table is used to locate the 'student_id'. All |
| |
rows in $performance_table which have a matching 'student_id' are returned, |
| |
with data from $part_table and $symb_table which match the entries in |
| |
$performance_table, 'part_id' and 'symb_id'. When searching on a symb, |
| |
the $symb_table is processed first, with matching rows grabbed from |
| |
$performance_table and filled in from $part_table and $student_table in |
| |
that order. |
| |
|
| |
Running 'EXPLAIN ' on the 'SELECT' statements generated can be quite |
| |
interesting, especially if you play with the order the tables are listed. |
| |
|
| |
|
| |
=item C<&get_current_state()> |
| |
|
| |
Input: $sname,$sdom,$symb,$courseid |
| |
|
| |
Output: Described below |
| |
|
| |
Retrieve the current status of a students performance. $sname and |
| |
$sdom are the only required parameters. If $symb is undef the results |
| |
of an &Apache::lonnet::currentdump() will be returned. |
| |
If $courseid is undef it will be retrieved from the environment. |
| |
|
| |
The return structure is based on &Apache::lonnet::currentdump. If |
| |
$symb is unspecified, all the students data is returned in a hash of |
| |
the form: |
| |
( |
| |
symb1 => { param1 => value1, param2 => value2 ... }, |
| |
symb2 => { param1 => value1, param2 => value2 ... }, |
| |
) |
| |
|
| |
If $symb is specified, a hash of |
| |
( |
| |
param1 => value1, |
| |
param2 => value2, |
| |
) |
| |
is returned. |
| |
|
| |
If no data is found for $symb, or if the student has no performance data, |
| |
an empty list is returned. |
| |
|
| |
=item C<&get_problem_statistics()> |
| |
|
| |
Gather data on a given problem. The database is assumed to be |
| |
populated and all local caching variables are assumed to be set |
| |
properly. This means you need to call &ensure_current_data for |
| |
the students you are concerned with prior to calling this routine. |
| |
|
| |
Inputs: $Sections, Groups, $status, $symb, $part, $courseid, $starttime, |
| |
$endtime |
| |
|
| =over 4 |
=over 4 |
| |
|
| Input: $ChartDB |
=item $Sections Array ref containing section names for students. |
| |
'all' is allowed to be the first (and only) item in the array. |
| |
|
| |
=item $Groups Array ref containing group names for students. |
| |
'all' is allowed to be the first (and only) item in the array. |
| |
|
| |
=item $status String describing the status of students |
| |
|
| $ChartDB: The name of the cache database to be opened |
=item $symb is the symb for the problem. |
| |
|
| Output: -1, 0, 1 |
=item $part is the part id you need statistics for |
| |
|
| -1: Could not tie database |
=item $courseid is the course id, of course! |
| 0: Use cached data |
|
| 1: New cache database created, use that. |
=item $starttime and $endtime are unix times which to use to limit |
| |
the statistical data. |
| |
|
| =back |
=back |
| |
|
| =cut |
Outputs: See the code for up to date information. A hash reference is |
| |
returned. The hash has the following keys defined: |
| |
|
| sub TestCacheData { |
=over 4 |
| my ($ChartDB,$isRecalculate,$totalDelay)=@_; |
|
| my $isCached=-1; |
|
| my %testData; |
|
| my $tieTries=0; |
|
| |
|
| if(!defined($totalDelay)) { |
=item * num_students |
| $totalDelay = 10; |
|
| } |
|
| |
|
| if ((-e "$ChartDB") && (!$isRecalculate)) { |
The number of students attempting the problem |
| $isCached = 1; |
|
| } else { |
=item tries |
| $isCached = 0; |
|
| } |
|
| |
|
| while($tieTries < $totalDelay) { |
The total number of tries for the students |
| my $result=0; |
|
| if($isCached) { |
=item max_tries |
| $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_READER(),0640); |
|
| } else { |
|
| $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_NEWDB(),0640); |
|
| } |
|
| if($result) { |
|
| last; |
|
| } |
|
| $tieTries++; |
|
| sleep 1; |
|
| } |
|
| if($tieTries >= $totalDelay) { |
|
| return -1; |
|
| } |
|
| |
|
| untie(%testData); |
The maximum number of tries taken |
| |
|
| |
=item mean_tries |
| |
|
| return $isCached; |
The average number of tries |
| } |
|
| |
=item num_solved T |
| |
|
| sub DownloadStudentCourseData { |
he number of students able to solve the problem |
| my ($students,$checkDate,$cacheDB,$extract,$status,$courseID,$r,$c)=@_; |
|
| |
=item num_override |
| |
|
| my $title = 'LON-CAPA Statistics'; |
The number of students whose answer is 'correct_by_override' |
| my $heading = 'Download and Process Course Data'; |
|
| my $studentCount = scalar(@$students); |
=item deg_of_diff |
| my %cache; |
|
| |
|
| |
The degree of difficulty of the problem |
| |
|
| |
=item std_tries |
| |
|
| my $WhatIWant; |
The standard deviation of the number of tries |
| $WhatIWant = '(^version:|'; |
|
| $WhatIWant .= '^\d+:.+?:(resource\.\d+\.'; |
=item skew_tries |
| $WhatIWant .= '(solved|tries|previous|awarded|(\d+\.submission))\s*$'; |
|
| $WhatIWant .= '|timestamp)'; |
|
| $WhatIWant .= ')'; |
|
| # $WhatIWant = '.'; |
|
| |
|
| if($status eq 'true') { |
The skew of the number of tries |
| &Apache::lonhtmlcommon::Create_PrgWin($r, $title, $heading); |
|
| } |
|
| |
|
| my $displayString; |
=item per_wrong |
| my $count=0; |
|
| foreach (@$students) { |
|
| if($c->aborted()) { return 'Aborted'; } |
|
| |
|
| if($status eq 'true') { |
The number of students attempting the problem who were not |
| $count++; |
able to answer it correctly. |
| my $displayString = $count.'/'.$studentCount.': '.$_; |
|
| &Apache::lonhtmlcommon::Update_PrgWin($displayString, $r); |
|
| } |
|
| |
|
| my $downloadTime='Not downloaded'; |
=back |
| if($checkDate eq 'true' && |
|
| tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
|
| $downloadTime = $cache{$_.':lastDownloadTime'}; |
|
| untie(%cache); |
|
| } |
|
| |
|
| if($c->aborted()) { return 'Aborted'; } |
=item C<&populate_weight_table()> |
| |
|
| if($downloadTime eq 'Not downloaded') { |
=item C<&limit_by_start_end_times()> |
| my $courseData = |
|
| &DownloadCourseInformation($_, $courseID, $downloadTime, |
|
| $WhatIWant); |
|
| if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) { |
|
| foreach my $key (keys(%$courseData)) { |
|
| if($key =~ /^(con_lost|error|no_such_host)/i) { |
|
| $courseData->{$_.':error'} = 'No course data for '.$_; |
|
| last; |
|
| } |
|
| } |
|
| if($extract eq 'true') { |
|
| &ExtractStudentData($courseData, \%cache, \%cache, $_); |
|
| } else { |
|
| &ProcessStudentData(\%cache, $courseData, $_); |
|
| } |
|
| untie(%cache); |
|
| } else { |
|
| next; |
|
| } |
|
| } |
|
| } |
|
| if($status eq 'true') { &Apache::lonhtmlcommon::Close_PrgWin($r); } |
|
| |
|
| return 'OK'; |
Build SQL WHERE condition which limits the data collected by the start |
| } |
and end times provided |
| |
|
| sub DownloadStudentCourseDataSeparate { |
Inputs: $starttime, $endtime, $table |
| my ($students,$checkDate,$cacheDB,$extract,$status,$courseID,$r,$c)=@_; |
|
| my $residualFile = '/home/httpd/perl/tmp/'.$courseID.'DownloadFile.db'; |
|
| my $title = 'LON-CAPA Statistics'; |
|
| my $heading = 'Download Course Data'; |
|
| |
|
| my $WhatIWant; |
Returns: $time_limits |
| $WhatIWant = '(^version:|'; |
|
| $WhatIWant .= '^\d+:.+?:(resource\.\d+\.'; |
|
| $WhatIWant .= '(solved|tries|previous|awarded|(\d+\.submission))\s*$'; |
|
| $WhatIWant .= '|timestamp)'; |
|
| $WhatIWant .= ')'; |
|
| |
|
| &CheckForResidualDownload($courseID, $cacheDB, $students, $c); |
|
| |
|
| my %cache; |
=item C<&limit_by_section_and_status()C> |
| |
|
| my $studentCount = scalar(@$students); |
Build SQL WHERE condition which limits the data collected by section and |
| if($status eq 'true') { |
student status. |
| &Apache::lonhtmlcommon::Create_PrgWin($r, $title, $heading); |
|
| } |
|
| my $count=0; |
|
| my $displayString=''; |
|
| foreach (@$students) { |
|
| if($c->aborted()) { |
|
| return 'Aborted'; |
|
| } |
|
| |
|
| if($status eq 'true') { |
Inputs: $Sections (array ref) |
| $count++; |
$enrollment (string: 'any', 'expired', 'active') |
| $displayString = $count.'/'.$studentCount.': '.$_; |
$tablename The name of the table that holds the student data |
| &Apache::lonhtmlcommon::Update_PrgWin($displayString, $r); |
|
| } |
|
| |
|
| my $downloadTime='Not downloaded'; |
Returns: $student_requirements,$enrollment_requirements |
| if($checkDate eq 'true' && |
|
| tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
|
| $downloadTime = $cache{$_.':lastDownloadTime'}; |
|
| untie(%cache); |
|
| } |
|
| |
|
| if($c->aborted()) { |
=item C<&limit_by_group()> |
| return 'Aborted'; |
|
| } |
Build SQL LEFT JOIN statement to include students_groups and groupnames tables and SQL WHERE condition which limits the data collected by group. |
| |
|
| |
Inputs: $Groups (array ref) |
| |
$stutable The name of the table which holds the student data. |
| |
$grptable The name of the table which maps group_id to groupname. |
| |
$stugrptab The name of the table which holds student group affiliations. |
| |
Returns: $groups_join,$group_limits |
| |
$groups_join JOIN part of SQL statement (to include group related tables) |
| |
$group_limits SQL WHERE condition limiting to requested groups |
| |
|
| if($downloadTime eq 'Not downloaded') { |
=item C<rank_students_by_scores_on_resources()> |
| my $error = 0; |
|
| my $courseData = |
|
| &DownloadCourseInformation($_, $courseID, $downloadTime, |
|
| $WhatIWant); |
|
| my %downloadData; |
|
| unless(tie(%downloadData,'GDBM_File',$residualFile, |
|
| &GDBM_WRCREAT(),0640)) { |
|
| return 'Failed to tie temporary download hash.'; |
|
| } |
|
| foreach my $key (keys(%$courseData)) { |
|
| $downloadData{$key} = $courseData->{$key}; |
|
| if($key =~ /^(con_lost|error|no_such_host)/i) { |
|
| $error = 1; |
|
| last; |
|
| } |
|
| } |
|
| if($error) { |
|
| foreach my $deleteKey (keys(%$courseData)) { |
|
| delete $downloadData{$deleteKey}; |
|
| } |
|
| $downloadData{$_.':error'} = 'No course data for '.$_; |
|
| } |
|
| untie(%downloadData); |
|
| } |
|
| } |
|
| if($status eq 'true') { &Apache::lonhtmlcommon::Close_PrgWin($r); } |
|
| |
|
| return &CheckForResidualDownload($cacheDB, 'true', 'true', |
Inputs: |
| $courseID, $r, $c); |
$resources: array ref of hash ref. Each hash ref needs key 'symb'. |
| } |
$Sections: array ref of sections to include, |
| |
$Groups: array ref of groups to include. |
| |
$enrollment: string, |
| |
$courseid (may be omitted) |
| |
$starttime (may be omitted) |
| |
$endtime (may be omitted) |
| |
$has_award_for (may be omitted) |
| |
|
| sub CheckForResidualDownload { |
Returns; An array of arrays. The sub arrays contain a student name and |
| my ($cacheDB,$extract,$status,$courseID,$r,$c)=@_; |
their score on the resources. $starttime and $endtime constrain the |
| |
list to awards obtained during the given time limits. $has_score_on |
| |
constrains the list to those students who at least attempted the |
| |
resource identified by the given symb, which is used to filter out |
| |
such students for statistics that would be adversely affected by such |
| |
students. |
| |
|
| my $residualFile = '/home/httpd/perl/tmp/'.$courseID.'DownloadFile.db'; |
=item C<&get_sum_of_scores> |
| if(!-e $residualFile) { |
|
| return 'OK'; |
|
| } |
|
| |
|
| my %downloadData; |
Inputs: $resource (hash ref, needs {'symb'} key), |
| my %cache; |
$part, (the part id), |
| unless(tie(%downloadData,'GDBM_File',$residualFile,&GDBM_READER(),0640)) { |
$students (array ref, contents of array are scalars holding 'sname:sdom'), |
| return 'Can not tie database for check for residual download: tempDB'; |
$courseid |
| } |
|
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) { |
|
| untie(%downloadData); |
|
| return 'Can not tie database for check for residual download: cacheDB'; |
|
| } |
|
| |
|
| my @students=(); |
Returns: the sum of the score on the problem part over the students and the |
| my %checkStudent; |
maximum possible value for the sum (taken from the weight table). |
| my $key; |
|
| while(($key, undef) = each %downloadData) { |
|
| my @temp = split(':', $key); |
|
| my $student = $temp[0].':'.$temp[1]; |
|
| if(!defined($checkStudent{$student})) { |
|
| $checkStudent{$student}++; |
|
| push(@students, $student); |
|
| } |
|
| } |
|
| |
|
| my $heading = 'Process Course Data'; |
=item C<&score_stats()> |
| my $title = 'LON-CAPA Statistics'; |
|
| my $studentCount = scalar(@students); |
|
| if($status eq 'true') { |
|
| &Apache::lonhtmlcommon::Create_PrgWin($r, $title, $heading); |
|
| } |
|
| |
|
| my $count=1; |
Inputs: $Sections, $enrollment, $symbs, $starttime, |
| foreach my $name (@students) { |
$endtime, $courseid |
| last if($c->aborted()); |
|
| |
|
| if($status eq 'true') { |
$Sections, $enrollment, $starttime, $endtime, and $courseid are the same as |
| my $displayString = $count.'/'.$studentCount.': '.$name; |
elsewhere in this module. |
| &Apache::lonhtmlcommon::Update_PrgWin($displayString, $r); |
$symbs is an array ref of symbs |
| } |
|
| |
|
| if($extract eq 'true') { |
Returns: minimum, maximum, mean, s.d., number of students, and maximum |
| &ExtractStudentData(\%downloadData, \%cache, \%cache, $name); |
possible of student scores on the given resources |
| } else { |
|
| &ProcessStudentData(\%cache, \%downloadData, $name); |
|
| } |
|
| $count++; |
|
| } |
|
| |
|
| if($status eq 'true') { &Apache::lonhtmlcommon::Close_PrgWin($r); } |
=item C<&count_stats()> |
| |
|
| untie(%cache); |
Inputs: $Sections, $Groups, $enrollment, $symbs, $starttime, |
| untie(%downloadData); |
$endtime, $courseid |
| |
|
| if(!$c->aborted()) { |
$Sections, $Groups $enrollment, $starttime, $endtime, and $courseid are the |
| my @files = ($residualFile); |
same as elsewhere in this module. |
| unlink(@files); |
$symbs is an array ref of symbs |
| } |
|
| |
|
| return 'OK'; |
Returns: minimum, maximum, mean, s.d., and number of students |
| } |
of the number of items correct on the given resources |
| |
|
| |
=item C<get_student_data()> |
| |
|
| |
=item C<&get_student_scores($Sections,$Groups,$Symbs,$enrollment,$courseid)> |
| |
|
| |
=item C<&setup_table_names()> |
| |
|
| |
input: course id |
| |
|
| |
output: none |
| |
|
| |
=back |
| |
|
| |
=head3 End of Local Data Caching Subroutines |
| |
|
| |
=head3 Classlist Subroutines |
| |
|
| |
=over |
| |
|
| |
=item &get_classlist(); |
| |
|
| |
Retrieve the classist of a given class or of the current class. Student |
| |
information is returned from the classlist.db file and, if needed, |
| |
from the students environment. |
| |
|
| |
Optional arguments are $cdom, and $cnum (course domain, |
| |
and course number, respectively). If either is ommitted the course |
| |
will be taken from the current environment ($env{'request.course.id'}, |
| |
$env{'course.'.$cid.'.domain'}, and $env{'course.'.$cid.'.num'}). |
| |
|
| |
Returns a reference to a hash which contains: |
| |
keys '$sname:$sdom' |
| |
values [$sdom,$sname,$end,$start,$id,$section,$fullname,$status,$type, |
| |
$lockedtype,$credits] |
| |
|
| |
The constant values CL_SDOM, CL_SNAME, CL_END, etc. can be used |
| |
as indices into the returned list to future-proof clients against |
| |
changes in the list order. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| # ----- END HELPER FUNCTIONS -------------------------------------------- |
|
| |
|
| 1; |
|
| __END__ |
|
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