1: # The LearningOnline Network with CAPA
2: # Search Catalog
3: #
4: # $Id: lonsearchcat.pm,v 1.364 2025/03/19 15:44:44 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###############################################################################
29: ###############################################################################
30:
31: =pod
32:
33: =head1 NAME
34:
35: lonsearchcat - LONCAPA Search Interface
36:
37: =head1 SYNOPSIS
38:
39: Search interface to LON-CAPAs digital library
40:
41: =head1 DESCRIPTION
42:
43: This module enables searching for a distributed browseable catalog.
44:
45: This is part of the LearningOnline Network with CAPA project
46: described at http://www.lon-capa.org.
47:
48: lonsearchcat presents the user with an interface to search the LON-CAPA
49: digital library. lonsearchcat also initiates the execution of a search
50: by sending the search parameters to LON-CAPA servers. The progress of
51: search (on a server basis) is displayed to the user in a separate window.
52:
53: =head1 Internals
54:
55: =cut
56:
57: ###############################################################################
58: ###############################################################################
59:
60: package Apache::lonsearchcat;
61:
62: use strict;
63: use Apache::Constants qw(:common :http);
64: use Apache::lonnet;
65: use Apache::File();
66: use CGI qw(:standard);
67: use Text::Query;
68: use GDBM_File;
69: use Apache::loncommon();
70: use Apache::lonmysql();
71: use Apache::lonmeta;
72: use Apache::lonhtmlcommon;
73: use Apache::lonlocal;
74: use LONCAPA::lonmetadata();
75: use HTML::Entities();
76: use Parse::RecDescent;
77: use Apache::lonnavmaps;
78: use Apache::lonindexer();
79: use Apache::lonwishlist();
80: use LONCAPA;
81: use Time::HiRes qw(sleep);
82:
83: ######################################################################
84: ######################################################################
85: ##
86: ## Global variables
87: ##
88: ######################################################################
89: ######################################################################
90: my %groupsearch_db; # Database hash used to save values for the
91: # groupsearch RAT interface.
92: my %persistent_db; # gdbm hash which holds data which is supposed to
93: # persist across calls to lonsearchcat.pm
94:
95: # The different view modes and associated functions
96:
97: my %Views = ("detailed" => \&detailed_citation_view,
98: "detailedpreview" => \&detailed_citation_preview,
99: "summary" => \&summary_view,
100: "summarypreview" => \&summary_preview,
101: "fielded" => \&fielded_format_view,
102: "xml" => \&xml_sgml_view,
103: "compact" => \&compact_view);
104:
105: ######################################################################
106: ######################################################################
107: sub handler {
108: my $r = shift;
109: # &set_defaults();
110: #
111: # set form defaults
112: #
113: my $hidden_fields;# Hold all the hidden fields used to keep track
114: # of the search system state
115: my $importbutton; # button to take the selected results and go to group
116: # sorting
117: my $diropendb; # The full path to the (temporary) search database file.
118: # This is set and used in &handler() and is also used in
119: # &output_results().
120:
121: #
122: my $closebutton; # button that closes the search window
123: # This button is different for the RAT compared to
124: # normal invocation.
125: #
126: &Apache::loncommon::content_type($r,'text/html');
127: $r->send_http_header;
128: return OK if $r->header_only;
129: ##
130: ## Prevent caching of the search interface window. Hopefully this means
131: ## we will get the launch=1 passed in a little more.
132: &Apache::loncommon::no_cache($r);
133: ##
134: ## Pick up form fields passed in the links.
135: ##
136: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
137: ['catalogmode','launch','acts','mode','form','element','pause',
138: 'phase','persistent_db_id','table','start','show',
139: 'cleargroupsort','titleelement','area','inhibitmenu']);
140: ##
141: ## The following is a trick - we wait a few seconds if asked to so
142: ## the daemon running the search can get ahead of the daemon
143: ## printing the results. We only need (theoretically) to do
144: ## this once, so the pause indicator is deleted
145: ##
146: if (exists($env{'form.pause'})) {
147: sleep(0.1);
148: delete($env{'form.pause'});
149: }
150: ##
151: ## Initialize global variables
152: ##
153: my $domain = $r->dir_config('lonDefDomain');
154: my $temp_file_dir = LONCAPA::tempdir();
155: $diropendb= $temp_file_dir .
156: "$env{'user.domain'}_$env{'user.name'}_sel_res.db";
157: #
158: # set the name of the persistent database
159: # $env{'form.persistent_db_id'} can only have digits in it.
160: if (! exists($env{'form.persistent_db_id'}) ||
161: ($env{'form.persistent_db_id'} =~ /\D/) ||
162: ($env{'form.launch'} eq '1')) {
163: $env{'form.persistent_db_id'} = time;
164: }
165:
166: my $persistent_db_file = $temp_file_dir .
167: &escape($domain).
168: '_'.&escape($env{'user.name'}).
169: '_'.$env{'form.persistent_db_id'}.'_persistent_search.db';
170: ##
171: &Apache::lonhtmlcommon::clear_breadcrumbs();
172:
173: my $crumb_text;
174: my @allowed_searches;
175: if ($env{'form.catalogmode'} eq 'import') {
176: $env{'form.area'} = 'res';
177: $crumb_text = 'Content Library Search';
178: } else {
179: push(@allowed_searches,'portfolio');
180: }
181: if (&Apache::lonnet::allowed('bre',$env{'request.role.domain'}) eq 'F') {
182: push(@allowed_searches,'res');
183: } else {
184: unless ($env{'form.catalogmode'} eq 'import') {
185: $env{'form.area'} = 'portfolio';
186: $crumb_text = 'Portfolio Search';
187: }
188: }
189: if (@allowed_searches ==2) {
190: unless (($env{'form.area'} eq 'portfolio') || ($env{'form.area'} eq 'res')) {
191: delete($env{'form.area'});
192: }
193: $crumb_text = 'Portfolio and Content Library Search';
194: }
195: my $target = '_top';
196: if ((($env{'request.lti.login'}) && ($env{'request.lti.target'} eq 'iframe')) ||
197: (($env{'request.deeplink.login'}) && ($env{'request.deeplink.target'} eq '_self'))) {
198: if ($env{'form.phase'} =~ /^(sort|run_search)$/) {
199: $target = '_parent';
200: } else {
201: $target = '_self';
202: }
203: }
204: &Apache::lonhtmlcommon::add_breadcrumb
205: ({href=>'/adm/searchcat?'.
206: &Apache::loncommon::inhibit_menu_check().
207: '&catalogmode='.$env{'form.catalogmode'}.
208: '&launch='.$env{'form.launch'}.
209: '&mode='.$env{'form.mode'}.
210: '&area='.$env{'form.area'},
211: text=>"$crumb_text",
212: target=>$target,
213: bug=>'Searching',});
214: #
215: if ($env{'form.phase'} !~ m/(basic|adv|course)_search/) {
216: if (! &get_persistent_form_data($persistent_db_file)) {
217: if ($env{'form.phase'} =~ /(run_search|results)/) {
218: &Apache::lonnet::logthis('lonsearchcat:'.
219: 'Unable to recover data from '.
220: $persistent_db_file);
221: my $msg =
222: &mt('We were unable to retrieve data describing your search.').
223: ' '.&mt('This is a serious error and has been logged.').
224: '<br />'.
225: &mt('Please alert your LON-CAPA administrator.');
226: &Apache::loncommon::simple_error_page(
227: $r,'Search Error',
228: $msg,
229: {'no_auto_mt_msg' => 1});
230: return OK;
231: }
232: }
233: } else {
234: &clean_up_environment();
235: }
236: ##
237: ## Clear out old values from groupsearch database
238: ##
239: untie %groupsearch_db if (tied(%groupsearch_db));
240: if (($env{'form.cleargroupsort'} eq '1') ||
241: (($env{'form.launch'} eq '1') &&
242: ($env{'form.catalogmode'} eq 'import'))) {
243: if (tie(%groupsearch_db,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
244: &start_fresh_session();
245: untie %groupsearch_db;
246: delete($env{'form.cleargroupsort'});
247: } else {
248: # This is a stupid error to give to the user.
249: # It really tells them nothing.
250: my $msg = 'Unable to tie hash to db file.';
251: &Apache::loncommon::simple_error_page($r,'Search Error',
252: $msg);
253: return OK;
254: }
255: }
256: ##
257: ## Configure hidden fields
258: ##
259: $hidden_fields = '<input type="hidden" name="persistent_db_id" value="'.
260: $env{'form.persistent_db_id'}.'" />'."\n";
261: if (exists($env{'form.catalogmode'})) {
262: $hidden_fields .= &hidden_field('catalogmode');
263: }
264: if (exists($env{'form.form'})) {
265: $hidden_fields .= &hidden_field('form');
266: }
267: if (exists($env{'form.element'})) {
268: $hidden_fields .= &hidden_field('element');
269: }
270: if (exists($env{'form.titleelement'})) {
271: $hidden_fields .= &hidden_field('titleelement');
272: }
273: if (exists($env{'form.mode'})) {
274: $hidden_fields .= &hidden_field('mode');
275: }
276: if (exists($env{'form.area'})) {
277: $hidden_fields .= &hidden_field('area');
278: }
279: if (exists($env{'form.inhibitmenu'})) {
280: $hidden_fields .= &hidden_field('inhibitmenu');
281: }
282: ##
283: ## Configure dynamic components of interface
284: ##
285: if ($env{'form.catalogmode'} eq 'interactive') {
286: $closebutton="<input type='button' name='close' value='".&mt('Close')."' ";
287: if ($env{'form.phase'} =~ /(results|run_search)/) {
288: $closebutton .="onclick='parent.close()'";
289: } else {
290: $closebutton .="onclick='self.close()'";
291: }
292: $closebutton .=" />\n";
293: } elsif ($env{'form.catalogmode'} eq 'import') {
294: $closebutton="<input type='button' name='close' value='".&mt('Close')."' ";
295: if ($env{'form.phase'} =~ /(results|run_search)/) {
296: $closebutton .="onclick='parent.close()'";
297: } else {
298: $closebutton .="onclick='self.close()'";
299: }
300: $closebutton .= " />";
301: my $txt_import = &mt('IMPORT');
302: $importbutton=<<END;
303: <input type='button' name='import' value='$txt_import'
304: onclick='javascript:select_group()' />
305: END
306: } else {
307: $closebutton = '';
308: $importbutton = '';
309: }
310: ##
311: ## Sanity checks on form elements
312: ##
313: if (!defined($env{'form.viewselect'})) {
314: $env{'form.viewselect'} ="summary";
315: }
316: $env{'form.phase'} = 'disp_basic' if (! exists($env{'form.phase'}));
317: $env{'form.show'} = 20 if (! exists($env{'form.show'}));
318: #
319: $env{'form.searchmode'} = 'basic' if (! exists($env{'form.searchmode'}));
320: if ($env{'form.phase'} eq 'adv_search' ||
321: $env{'form.phase'} eq 'disp_adv') {
322: $env{'form.searchmode'} = 'advanced';
323: }
324: #
325: if ($env{'form.searchmode'} eq 'advanced') {
326: my $srchtype = 'Content Library';
327: if ($env{'form.area'} eq 'portfolio') {
328: $srchtype = 'Portfolio';
329: }
330: &Apache::lonhtmlcommon::add_breadcrumb
331: ({href=>'/adm/searchcat?'.&Apache::loncommon::inhibit_menu_check().
332: '&phase=disp_adv'.
333: '&catalogmode='.$env{'form.catalogmode'}.
334: '&launch='.$env{'form.launch'}.
335: '&mode='.$env{'form.mode'}.
336: '&area='.$env{'form.area'},
337: text=>"Advanced $srchtype Search",
338: bug=>'Searching',});
339: } elsif (($env{'form.phase'} eq 'results') ||
340: ($env{'form.phase'} =~ /^(sort|run_search)$/)) {
341: &Apache::lonhtmlcommon::add_breadcrumb
342: ({href=>'/adm/searchcat?'.&Apache::loncommon::inhibit_menu_check().
343: '&phase=disp_adv'.
344: '&catalogmode='.$env{'form.catalogmode'}.
345: '&launch='.$env{'form.launch'}.
346: '&mode='.$env{'form.mode'}.
347: '&area='.$env{'form.area'}.
348: '&searchmode='.$env{'form.searchmode'},
349: text=>"Search Results",
350: bug=>'Searching',});
351: }
352: ##
353: ## Switch on the phase
354: ##
355: if ($env{'form.phase'} eq 'disp_basic') {
356: &print_basic_search_form($r,$closebutton,$hidden_fields);
357: } elsif ($env{'form.phase'} eq 'disp_adv') {
358: &print_advanced_search_form($r,$closebutton,$hidden_fields);
359: } elsif ($env{'form.phase'} eq 'results') {
360: &display_results($r,$importbutton,$closebutton,$diropendb,
361: $env{'form.area'});
362: } elsif ($env{'form.phase'} =~ /^(sort|run_search)$/) {
363: my ($query,$customquery,$customshow,$libraries,$pretty_string,$domainsref) =
364: &get_persistent_data($persistent_db_file,
365: ['query','customquery','customshow',
366: 'libraries','pretty_string','domains']);
367: if ($env{'form.phase'} eq 'sort') {
368: &print_sort_form($r,$pretty_string,$target);
369: } elsif ($env{'form.phase'} eq 'run_search') {
370: &run_search($r,$query,$customquery,$customshow,
371: $libraries,$pretty_string,$env{'form.area'},$domainsref,$target);
372: }
373: } elsif(($env{'form.phase'} eq 'basic_search') ||
374: ($env{'form.phase'} eq 'adv_search')) {
375: #
376: # We are running a search, try to parse it
377: my ($query,$customquery,$customshow,$libraries,$domains) =
378: (undef,undef,undef,undef,undef);
379: my $pretty_string;
380: if ($env{'form.phase'} eq 'basic_search') {
381: ($query,$pretty_string,$libraries,$domains) =
382: &parse_basic_search($r,$closebutton,$hidden_fields);
383: return OK if (! defined($query));
384: &make_persistent({ basicexp => $env{'form.basicexp'}},
385: $persistent_db_file);
386: } else { # Advanced search
387: ($query,$customquery,$customshow,$libraries,$pretty_string,$domains)
388: = &parse_advanced_search($r,$closebutton,$hidden_fields);
389: return OK if (! defined($query));
390: }
391: &make_persistent({ query => $query,
392: customquery => $customquery,
393: customshow => $customshow,
394: libraries => $libraries,
395: pretty_string => $pretty_string,
396: domains => $domains },
397: $persistent_db_file);
398: #
399: # Set up table
400: if (! defined(&create_results_table($env{'form.area'}))) {
401: my $errorstring=&Apache::lonmysql::get_error();
402: &Apache::lonnet::logthis('lonsearchcat.pm: Unable to create '.
403: 'needed table. lonmysql error:'.
404: $errorstring);
405:
406: my $msg =
407: 'Unable to create table in which to save search results. '.
408: 'The search has been aborted.';
409: &Apache::loncommon::simple_error_page($r,'Search Error',
410: $msg);
411: return OK;
412: }
413: delete($env{'form.launch'});
414: if (! &make_form_data_persistent($r,$persistent_db_file)) {
415: my $msg=
416: 'Unable to properly save search information. '.
417: 'The search has been aborted.';
418: &Apache::loncommon::simple_error_page($r,'Search Error',
419: $msg);
420: return OK;
421: }
422: ##
423: ## Print out the frames interface
424: ##
425: if (defined($query)) {
426: &print_frames_interface($r);
427: }
428: }
429: return OK;
430: }
431:
432: #
433: # The mechanism used to store values away and retrieve them does not
434: # handle the case of missing environment variables being significant.
435: #
436: # This routine sets non existant checkbox form elements to ''.
437: #
438: sub clean_up_environment {
439: if ($env{'form.phase'} eq 'basic_search') {
440: if (! exists($env{'form.related'})) {
441: $env{'form.related'} = '';
442: }
443: if (! exists($env{'form.domains'})) {
444: $env{'form.domains'} = '';
445: }
446: } elsif ($env{'form.phase'} eq 'adv_search') {
447: foreach my $field ('title','keywords','notes',
448: 'abstract','standards','mime') {
449: if (! exists($env{'form.'.$field.'_related'})) {
450: $env{'form.'.$field.'_related'} = '';
451: }
452: }
453: } elsif ($env{'form.phase'} eq 'course_search') {
454: if (! exists($env{'form.crsrelated'})) {
455: $env{'form.crsrelated'} = '';
456: }
457: }
458: }
459:
460: sub hidden_field {
461: my ($name,$value) = @_;
462: if (! defined($value)) {
463: $value = $env{'form.'.$name};
464: }
465: return '<input type="hidden" name="'.$name.'" value="'.$value.'" />'.$/;
466: }
467:
468: sub start_search_tabs {
469: my $area;
470: my %lt = &Apache::lonlocal::texthash (
471: res => 'Content Library Search',
472: portfolio => 'Portfolio Search',
473: );
474: my $output = '<ul class="LC_TabContentBigger" id="main">';
475: if (&Apache::lonnet::allowed('bre',$env{'request.role.domain'}) eq 'F') {
476: unless ($env{'form.area'} eq 'portfolio') {
477: $area = 'res';
478: }
479: $output .= "\n".'<li'.($area eq 'res'?' class="active"':'').
480: '><a href="/adm/searchcat?area=res&catalogmode='.$env{'form.catalogmode'}.'">'.
481: '<b> '.$lt{'res'}.
482: ' </b></a></li>';
483: unless ($env{'form.catalogmode'}) {
484: $output .= '<li'.($area ne 'res'?' class="active"':'').
485: '><a href="/adm/searchcat?area=portfolio"><b> '.$lt{'portfolio'}.
486: ' </b></a></li></ul>';
487: }
488: } else {
489: $area = 'portfolio';
490: $output .= "\n".'<li class="active">'.
491: '<a href="/adm/searchcat?area=portfolio"><b> '.$lt{'portfolio'}.
492: ' </b></a></li></ul>';
493: }
494: $output .= '<div class="LC_Box" style="clear:both;margin:0;">'.
495: '<div id="maincoursedoc" style="margin:0 0;padding:0 0;">'.
496: '<div class="LC_ContentBox" id="mainCourseDocuments" style="display: block;">';
497: return $output;
498: }
499:
500: sub end_search_tabs {
501: return '</div></div></div>';
502: }
503:
504: ######################################################################
505:
506: =pod
507:
508: =over 4
509:
510: =item &print_basic_search_form()
511:
512: Prints the form for the basic search. Sorry the name is so cryptic.
513:
514: =cut
515:
516: ######################################################################
517: ######################################################################
518: sub print_basic_search_form {
519: my ($r,$closebutton,$hidden_fields) = @_;
520: my %lt = &Apache::lonlocal::texthash (
521: res => 'Content Library Search',
522: portfolio => 'Portfolio Search',
523: );
524: my $result = ($env{'form.catalogmode'} ne 'import');
525: my $area;
526: my $bread_crumb =
527: &Apache::lonhtmlcommon::breadcrumbs('Searching','Search_Basic',
528: $env{'form.catalogmode'} ne 'import');
529: my $scrout = &Apache::loncommon::start_page('Content Library').$bread_crumb.
530: '<div class="LC_landmark" role="main">'."\n".
531: &start_search_tabs();
532: if (&Apache::lonnet::allowed('bre',$env{'request.role.domain'}) eq 'F') {
533: if ($env{'form.area'} eq 'portfolio') {
534: # Search form for accessible portfolio files
535: $scrout .= &setup_basic_search($r,'portfolio',$hidden_fields,$closebutton);
536: } else {
537: # Search form for resource space
538: $scrout .= &setup_basic_search($r,'res',$hidden_fields,$closebutton);
539: }
540: } else {
541: # Search form for accessible portfolio files
542: $scrout .= &setup_basic_search($r,'portfolio',$hidden_fields,$closebutton);
543: }
544: $scrout .= &end_search_tabs().&Apache::loncommon::end_page();
545: $r->print($scrout);
546: return;
547: }
548:
549: sub setup_basic_search {
550: my ($r,$area,$hidden_fields,$closebutton) = @_;
551: # Define interface components
552: my %lt = &Apache::lonlocal::texthash (
553: res => 'Content Library Search',
554: portfolio => 'Portfolio Search',
555: );
556: my ($userelatedwords,$onlysearchdomain,$inclext,$adv_search_link,$scrout);
557:
558: $userelatedwords = '<label>'
559: .&Apache::lonhtmlcommon::checkbox(
560: 'related',
561: $env{'form.related'},
562: 'related')
563: .' '
564: .&mt('use related words')
565: .'</label>';
566:
567: my $anydom = 1;
568: if ($area eq 'res') {
569: unless (&Apache::lonnet::allowed('bre','/res/') eq 'F') {
570: $anydom = 0;
571: }
572: }
573: my $singledom;
574: my ($disabled,$checked);
575: if ($anydom) {
576: $singledom = $r->dir_config('lonDefDomain');
577: if ($env{'form.domains'} eq $singledom) {
578: $checked = 1;
579: }
580: } else {
581: $singledom = $env{'user.domain'};
582: $disabled = ' disabled="disabled"';
583: $checked = 1;
584: }
585: $onlysearchdomain = '<label>'
586: .&Apache::lonhtmlcommon::checkbox(
587: 'domains',$checked,
588: $singledom,$disabled)
589: .' '
590: .&mt('only search domain [_1]'
591: ,'<b>'.$singledom.'</b>')
592: .'</label>';
593:
594: $adv_search_link = '<a href="/adm/searchcat?'.
595: &Apache::loncommon::inhibit_menu_check().
596: '&phase=disp_adv'.
597: '&catalogmode='.$env{'form.catalogmode'}.
598: '&launch='.$env{'form.launch'}.
599: '&mode='.$env{'form.mode'}.
600: '&area='.$area.
601: '&form='.$env{'form.form'}.
602: '&titleelement='.$env{'form.titleelement'}.
603: '&element='.$env{'form.element'}.
604: '">'.&mt('Advanced Search').'</a>';
605: #
606: $scrout.='<form name="loncapa_search" method="post" '.
607: 'action="/adm/searchcat">'.
608: '<input type="hidden" name="phase" value="basic_search" />'.
609: $hidden_fields;
610: if (!exists($env{'form.area'})) {
611: $scrout .= '<input type="hidden" name="area" value="'.$area.'" />';
612: }
613: #
614: $scrout .= '<div class="LC_floatleft">'.
615: '<label>'.
616: &Apache::lonhtmlcommon::textbox('basicexp',
617: $env{'form.basicexp'},50).
618: '<br />'.
619: '<span class="LC_fontsize_medium">'.&searchhelp().'</span></label></div>'.
620: '<div class="LC_floatleft" style="text-align: left;">'.
621: '<span class="LC_nobreak">'.(' 'x3).$adv_search_link.'</span>'.'<br />'.
622: '<span class="LC_nobreak">'.(' 'x1).$userelatedwords.'</span>'.'<br />'.
623: '<span class="LC_nobreak">'.(' 'x1).$onlysearchdomain.'</span>'.'<br />'.
624: '<span class="LC_nobreak">'.(' 'x1).$inclext.'</span>'.'<br />'.
625: '</div><br clear="both" />'.$/;
626: #
627: $scrout .= '<div><p>'
628: .&viewoptions()
629: .'</p>'
630: .'<p>'
631: .'<input type="submit" name="basicsubmit" '
632: .'value="'.&mt('Search').'" />'
633: .' '
634: .$closebutton
635: .'</p></div>';
636: #
637: $scrout .= '</form>';
638: return $scrout;
639: }
640:
641: ######################################################################
642: ######################################################################
643:
644: =pod
645:
646: =item &advanced_search_form()
647:
648: Prints the advanced search form.
649:
650: =cut
651:
652: ######################################################################
653: ######################################################################
654: sub print_advanced_search_form{
655: my ($r,$closebutton,$hidden_fields) = @_;
656: my $bread_crumb =
657: &Apache::lonhtmlcommon::breadcrumbs('Searching','Search_Advanced',
658: $env{'form.catalogmode'} ne 'import');
659: my %lt=&Apache::lonlocal::texthash('srch' => 'Search',
660: 'reset' => 'Reset',
661: 'help' => 'Help');
662: my $advanced_buttons=<<"END";
663: <p>
664: <input type="submit" name="advancedsubmit" value='$lt{"srch"}' />
665: <input type="reset" name="reset" value='$lt{"reset"}' />
666: $closebutton
667: </p>
668: END
669: my $srchtype = 'Content Library';
670: my $jscript;
671: if ($env{'form.area'} eq 'portfolio') {
672: $srchtype = 'Portfolio';
673: $jscript = '<script type="text/javascript">
674: // <![CDATA[
675: function additional_metadata() {
676: if (document.advsearch.newfield.checked) {
677: document.advsearch.phase.value = "disp_adv";
678: document.advsearch.numaddedfields.value = parseInt(document.advsearch.numaddedfields.value) +1;
679: document.advsearch.submit();
680: }
681: }
682: // ]]>
683: </script>';
684: }
685: my $scrout= &Apache::loncommon::start_page("Advanced $srchtype Search",
686: $jscript);
687: $scrout .= $bread_crumb.'<div class="LC_landmark" role="main">'."\n".
688: &start_search_tabs();
689:
690: $scrout .= '<form method="post" action="/adm/searchcat" name="advsearch">'
691: .$hidden_fields
692: .'<input type="hidden" name="phase" value="adv_search" />';
693:
694: $scrout .= '<fieldset>'."\n"
695: .'<legend>'.&mt('Display Options').'</legend>'."\n"
696: .&viewoptions()
697: .'</fieldset>';
698:
699: $scrout .= $advanced_buttons;
700:
701: $scrout .= &Apache::lonhtmlcommon::start_pick_box();
702:
703: my %fields=&Apache::lonmeta::fieldnames();
704:
705: # Standard Metadata
706: $scrout .= &Apache::lonhtmlcommon::row_headline()
707: .'<h2 class="LC_heading_2">'.&mt("Standard $srchtype Metadata").'</h2>'
708: .&searchhelp()
709: .&Apache::lonhtmlcommon::row_closure();
710: my %related_word_search =
711: ('title' => 1,
712: 'author' => 0,
713: 'owner' => 0,
714: 'authorspace' => 0,
715: 'modifyinguser'=> 0,
716: 'keywords' => 1,
717: 'notes' => 1,
718: 'abstract' => 1,
719: 'standards'=> 1,
720: 'mime' => 1,
721: 'subject' => 1,
722: );
723: #
724: foreach my $field ('title','author','subject','owner','authorspace',
725: 'modifyinguser','keywords','notes','abstract',
726: 'standards','mime') {
727: $scrout .= &Apache::lonhtmlcommon::row_title('<label for="'.$field.'">'.
728: &titlefield($fields{$field}).'</label>')
729: .&Apache::lonmeta::prettyinput($field,
730: $env{'form.'.$field},'',
731: $field,
732: 'advsearch',
733: $related_word_search{$field},
734: ' ',
735: $env{'form.'.$field.'_related'},
736: 50);
737: if ($related_word_search{$field}) {
738: $scrout .= '<label for="'.$field.'_related">'.&mt('related words').'</label>';
739: } else {
740: $scrout .= '';
741: }
742: $scrout .= &Apache::lonhtmlcommon::row_closure();
743: }
744: foreach my $field ('lowestgradelevel','highestgradelevel') {
745: $scrout .= &Apache::lonhtmlcommon::row_title('<label for="'.$field.'">'.
746: &titlefield($fields{$field}).'</label>')
747: .&Apache::lonmeta::prettyinput($field,
748: $env{'form.'.$field},'',
749: $field,
750: 'advsearch',
751: 0)
752: .&Apache::lonhtmlcommon::row_closure();
753: }
754:
755: $scrout .= &Apache::lonhtmlcommon::row_title('<label for="category">'.
756: &titlefield(&mt('MIME Type Category')).'</label>')
757: .&Apache::loncommon::filecategoryselect('category',
758: $env{'form.category'},'category')
759: .&Apache::lonhtmlcommon::row_closure();
760:
761: my $anydomain = 1;
762: if ($env{'form.area'} ne 'portfolio') {
763: unless (&Apache::lonnet::allowed('bre','/res/')) {
764: $anydomain = 0;
765: }
766: }
767:
768: $scrout .= &Apache::lonhtmlcommon::row_title('<label for="domains">'.
769: &titlefield(&mt('Domains')).'</label>');
770: if ($anydomain) {
771: my $defdom = &Apache::lonnet::default_login_domain();
772: my ($trusted,$untrusted) = &Apache::lonnet::trusted_domains('shared',$defdom);
773: $scrout .= &Apache::loncommon::domain_select('domains',
774: $env{'form.domains'},1,$trusted,$untrusted,'domains');
775: } else {
776: $scrout .= &Apache::loncommon::select_dom_form($env{'user.domain'},
777: 'domains','','','',
778: [$env{'user.domain'}],'',1,'domains');
779: }
780: $scrout .= &Apache::lonhtmlcommon::row_closure();
781:
782: # Misc metadata
783: if ($env{'form.area'} ne 'portfolio') {
784: $scrout .= &Apache::lonhtmlcommon::row_title('<label for="copyright">'.
785: &titlefield(&mt('Copyright/Distribution')).'</label>')
786: .&Apache::lonmeta::selectbox('copyright',
787: $env{'form.copyright'},'',
788: 'copyright',
789: \&Apache::loncommon::copyrightdescription,
790: ( undef,
791: &Apache::loncommon::copyrightids)
792: )
793: .&Apache::lonhtmlcommon::row_closure();
794: }
795:
796: $scrout .= &Apache::lonhtmlcommon::row_title('<label for="language">'.
797: &titlefield(&mt('Language')).'</label>')
798: .&Apache::lonmeta::selectbox('language',
799: $env{'form.language'},'','language',
800: \&Apache::loncommon::languagedescription,
801: ('any',&Apache::loncommon::languageids)
802: )
803: .&Apache::lonhtmlcommon::row_closure();
804:
805: # Portfolio Metadata
806: if ($env{'form.area'} eq 'portfolio') {
807: # Added fields
808: my $curnumadd = $env{'form.numaddedfields'};
809: if ($curnumadd eq '') {
810: $curnumadd = 1;
811: }
812: my $customlabel = &mt('Text box description');
813: $scrout .= &Apache::lonhtmlcommon::row_headline()
814: .'<h3>'.&mt('Custom Metadata fields').'</h3>'
815: .&Apache::lonhtmlcommon::row_closure()
816: .&Apache::lonhtmlcommon::row_title('<span class="LC_visually_hidden">'.$customlabel.'</span>',
817: '','','',1)
818: .&mt('Field Name').' | '.&mt('Field Value(s)')
819: .&Apache::lonhtmlcommon::row_closure();
820:
821: for (my $j=0; $j<$curnumadd; $j++) {
822: my $num = $j+1;
823: my $namelabel = &mt('name of custom metadata field [_1]',$num);
824: my $valuelabel = &mt('value of custom metadata field [_1]',$num);
825: $scrout .= &Apache::lonhtmlcommon::row_title(&mt('Custom metadata [_1]',$num))
826: .'<input type="text" id="addedfield_'.$j.'"'
827: .' name="addedfield_'.$j.'" size="10"'
828: .' value="'.$env{'form.addedfield_'.$j}.'" aria-label="'.$namelabel.'" />'
829: .' '
830: .'<input type="text" '
831: .'name="addedvalues_'.$j.'" size="15"'
832: .' value="'.$env{'form.addedvalues_'.$j}.'" aria-label="'.$valuelabel.'" />'
833: .&Apache::lonhtmlcommon::row_closure();
834: }
835: my $addcustomlabel = &mt('Add metadata field option');
836: $scrout .= &Apache::lonhtmlcommon::row_title('<span class="LC_visually_hidden">'.$addcustomlabel.'</span>',
837: '','','',1)
838: .'<label>'
839: .'<input type="checkbox" name="newfield"'
840: .' value="1" onclick="javascript:additional_metadata()" />'
841: .&mt('Another custom field/value pair?').'</label>'
842: .'<input type="hidden" name="numaddedfields"'
843: .' value="'.$curnumadd.'" />'
844: .&Apache::lonhtmlcommon::row_closure();
845: } else {
846: #
847: # Dynamic metadata
848: my $statslabel = &mt('Text box description');
849: $scrout .= &Apache::lonhtmlcommon::row_headline()
850: .'<h3>'.&mt('Problem Statistics').'</h3>'
851: .&Apache::lonhtmlcommon::row_closure();
852: $scrout .= &Apache::lonhtmlcommon::row_title('<span class="LC_visually_hidden">'.$statslabel.'</span>',
853: '','','',1)
854: .&mt('Minimum').' | '.&mt('Maximum')
855: .&Apache::lonhtmlcommon::row_closure();
856: foreach my $statistic
857: ({ name=>'count',
858: description=>'Network-wide number of accesses (hits)',
859: minlabel => 'minimum hit count',
860: maxlabel => 'maximum hit count'},
861: { name=>'stdno',
862: description=>
863: 'Statistics calculated for number of students',
864: minlabel => 'minimum number of students in calculation',
865: maxlabel => 'maximum number of students in calculation'},
866: { name => 'avetries',
867: description=>'Average number of tries till solved',
868: minlabel => 'minimum average tries till solved',
869: maxlabel => 'maximum average tries till solved'},
870: { name => 'difficulty',
871: description=>'Degree of difficulty',
872: minlabel => 'minimum degree of difficulty',
873: maxlabel => 'maximum degree of difficulty'},
874: { name => 'disc',
875: description=>'Degree of discrimination',
876: minlabel => 'minimum degree of discrimination',
877: maxlabel => 'maximum degree of discrimination'}) {
878: $scrout .= &Apache::lonhtmlcommon::row_title(&titlefield(&mt($statistic->{'description'})))
879: .'<input type="text" name="'.$statistic->{'name'}
880: .'_min" value="" size="6" aria-label="'.&mt($statistic->{'minlabel'}).'" />'
881: .' '
882: .'<input type="text" name="'.$statistic->{'name'}
883: .'_max" value="" size="6" aria-label="'.&mt($statistic->{'maxlabel'}).'" />'
884: .&Apache::lonhtmlcommon::row_closure();
885: }
886: my $evallabel = &mt('Text box description');
887: $scrout .= &Apache::lonhtmlcommon::row_headline()
888: .'<h3>'.&mt('Evaluation Data').'</h3>'
889: .&Apache::lonhtmlcommon::row_closure();
890: $scrout .= &Apache::lonhtmlcommon::row_title('<span class="LC_visually_hidden">'.$evallabel.'</span>',
891: '','','',1)
892: .&mt('Minimum').' | '.&mt('Maximum')
893: .&Apache::lonhtmlcommon::row_closure();
894: foreach my $evaluation
895: ( { name => 'clear',
896: description => 'Material presented in clear way',
897: minlabel => 'minimum score: clarity',
898: maxlabel => 'maximum score: clarity'},
899: { name =>'depth',
900: description => 'Material covered with sufficient depth',
901: minlabel => 'minimum score: coverage depth',
902: maxlabel => 'maximum score: coverage depth'},
903: { name => 'helpful',
904: description => 'Material is helpful',
905: minlabel => 'minimum score: content helpful',
906: maxlabel => 'maximum score: content helpful'},
907: { name => 'correct',
908: description => 'Material appears to be correct',
909: minlabel => 'minimum score: correctness',
910: maxlabel => 'maximum score: correctness'},
911: { name => 'technical',
912: description => 'Resource is technically correct',
913: minlabel => 'minimum score: technical correctness',
914: maxlabel => 'maximum score: technical correctness'}) {
915: $scrout .= &Apache::lonhtmlcommon::row_title(&titlefield(&mt($evaluation->{'description'})))
916: .'<input type="text" name="'
917: .$evaluation->{'name'}.'_min" value="" size="6" aria-label="'.&mt($evaluation->{'minlabel'}).'" />'
918: .' '
919: .'<input type="text" name="'
920: .$evaluation->{'name'}.'_max" value="" size="6" aria-label="'.&mt($evaluation->{'maxlabel'}).'" />'
921: .&Apache::lonhtmlcommon::row_closure();
922: }
923: }
924: #
925: # Creation/Modification date limits
926: my $dateslabel = &mt('Text box description');
927: $scrout .= &Apache::lonhtmlcommon::row_headline()
928: .'<h3>'.&mt('Creation and Modification dates').'</h3>'
929: .&Apache::lonhtmlcommon::row_closure();
930: $scrout .= &Apache::lonhtmlcommon::row_title('<span class="LC_visually_hidden">'.$dateslabel.'</span>',
931: '','','',1)
932: .&mt('Month[_1]Day[_2]Year',' 'x14,' 'x6)
933: .&Apache::lonhtmlcommon::row_closure();
934:
935: my $cafter =
936: &Apache::lonhtmlcommon::date_setter('advsearch', # formname
937: 'creationdate1', # fieldname
938: 0, # current value
939: '', # special
940: 1, # includeempty
941: '', # state
942: 1, # no_hh_mm_ss
943: );
944: my $cbefore =
945: &Apache::lonhtmlcommon::date_setter('advsearch', # formname
946: 'creationdate2', # fieldname
947: 0, # current value
948: '', # special
949: 1, # includeempty
950: '', # state
951: 1, # no_hh_mm_ss
952: );
953: $scrout .= &Apache::lonhtmlcommon::row_title(&mt('Created between'))
954: .$cafter
955: .&Apache::lonhtmlcommon::row_closure(1)
956: .&Apache::lonhtmlcommon::row_title(&mt('and'))
957: .$cbefore
958: .&Apache::lonhtmlcommon::row_closure();
959:
960: my $lafter =
961: &Apache::lonhtmlcommon::date_setter('advsearch',
962: 'revisiondate1',
963: 0, # current value
964: '', # special
965: 1, # includeempty
966: '', # state
967: 1, # no_hh_mm_ss
968: );
969: my $lbefore =
970: &Apache::lonhtmlcommon::date_setter('advsearch',
971: 'revisiondate2',
972: 0, # current value
973: '', # special
974: 1, # includeempty
975: '', # state
976: 1, # no_hh_mm_ss
977: );
978: $scrout .= &Apache::lonhtmlcommon::row_title(&mt('Last modified between'))
979: .$lafter
980: .&Apache::lonhtmlcommon::row_closure(1)
981: .&Apache::lonhtmlcommon::row_title(&mt('and'))
982: .$lbefore
983: .&Apache::lonhtmlcommon::row_closure(1); # Last row of total pick_box
984:
985: $scrout .= &Apache::lonhtmlcommon::end_pick_box();
986:
987: $scrout .= $advanced_buttons
988: .'</form>';
989:
990: $scrout .= &end_search_tabs().'</div>'.&Apache::loncommon::end_page();
991: $r->print($scrout);
992: return;
993: }
994:
995: ######################################################################
996: ######################################################################
997:
998: =pod
999:
1000: =item &titlefield()
1001:
1002: Inputs: title text
1003:
1004: Outputs: titletext with font wrapper
1005:
1006: =cut
1007:
1008: ######################################################################
1009: ######################################################################
1010: sub titlefield {
1011: my $title=shift;
1012: return $title;
1013: }
1014:
1015: ######################################################################
1016: ######################################################################
1017:
1018: =pod
1019:
1020: =item viewoptiontext()
1021:
1022: Inputs: codename for view option
1023:
1024: Outputs: displayed text
1025:
1026: =cut
1027:
1028: ######################################################################
1029: ######################################################################
1030: sub viewoptiontext {
1031: my $code=shift;
1032: my %desc=&Apache::lonlocal::texthash
1033: ('detailed' => "Detailed Citation View",
1034: 'xml' => 'XML/SGML',
1035: 'compact' => 'Compact View',
1036: 'fielded' => 'Fielded Format',
1037: 'summary' => 'Summary View',
1038: 'summarypreview' => 'Summary Preview',
1039: 'detailedpreview' => 'Detailed Citation Preview');
1040: return $desc{$code};
1041: }
1042:
1043: ######################################################################
1044: ######################################################################
1045:
1046: =pod
1047:
1048: =item viewoptions()
1049:
1050: Inputs: none
1051:
1052: Outputs: text for box with view options
1053:
1054: =cut
1055:
1056: ######################################################################
1057: ######################################################################
1058: sub viewoptions {
1059: my $scrout;
1060: if (! defined($env{'form.viewselect'})) {
1061: $env{'form.viewselect'}='detailed';
1062: }
1063: $scrout .= '<span class="LC_nobreak"><label>'
1064: .&mt('Type:').' '
1065: .&Apache::lonmeta::selectbox('viewselect',
1066: $env{'form.viewselect'},'','',
1067: \&viewoptiontext,
1068: sort(keys(%Views)))
1069: .'</label></span>';
1070: my $countselect = &Apache::lonmeta::selectbox('show',
1071: $env{'form.show'},'','',
1072: undef,
1073: (10,20,50,100,1000,10000));
1074: $scrout .= ' <span class="LC_nobreak"><label>'
1075: .&mt('Records per Page:').' '.$countselect
1076: .'</label></span>'.$/;
1077: return $scrout;
1078: }
1079:
1080: ######################################################################
1081: ######################################################################
1082:
1083: =pod
1084:
1085: =item searchhelp()
1086:
1087: Inputs: none
1088:
1089: Outputs: return little blurb on how to enter searches
1090:
1091: =cut
1092:
1093: ######################################################################
1094: ######################################################################
1095: sub searchhelp {
1096: return &mt('Enter words and quoted phrases');
1097: }
1098:
1099: ######################################################################
1100: ######################################################################
1101:
1102: =pod
1103:
1104: =item &get_persistent_form_data()
1105:
1106: Inputs: filename of database
1107:
1108: Outputs: returns undef on database errors.
1109:
1110: This function is the reverse of &make_persistent() for form data.
1111: Retrieve persistent data from %persistent_db. Retrieved items will have their
1112: values unescaped. If a form value already exists in $env, it will not be
1113: overwritten. Form values that are array references may have values appended
1114: to them.
1115:
1116: =cut
1117:
1118: ######################################################################
1119: ######################################################################
1120: sub get_persistent_form_data {
1121: my $filename = shift;
1122: return 0 if (! -e $filename);
1123: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
1124: &GDBM_READER(),0640));
1125: #
1126: # These make sure we do not get array references printed out as 'values'.
1127: my %arrays_allowed = ('form.domains'=>1);
1128: #
1129: # Loop through the keys, looking for 'form.'
1130: foreach my $name (keys(%persistent_db)) {
1131: next if ($name !~ /^form./);
1132: # Kludgification begins!
1133: if ($name eq 'form.domains' &&
1134: $env{'form.searchmode'} eq 'basic' &&
1135: $env{'form.phase'} ne 'disp_basic') {
1136: next;
1137: }
1138: # End kludge (hopefully)
1139: next if (exists($env{$name}));
1140: my @values = map {
1141: &unescape($_);
1142: } split(',',$persistent_db{$name});
1143: next if (@values <1);
1144: if ($arrays_allowed{$name}) {
1145: $env{$name} = [@values];
1146: } else {
1147: $env{$name} = $values[0] if ($values[0]);
1148: }
1149: }
1150: untie (%persistent_db);
1151: return 1;
1152: }
1153:
1154: ######################################################################
1155: ######################################################################
1156:
1157: =pod
1158:
1159: =item &get_persistent_data()
1160:
1161: Inputs: filename of database, ref to array of values to recover.
1162:
1163: Outputs: array of values. Returns undef on error.
1164:
1165: This function is the reverse of &make_persistent();
1166: Retrieve persistent data from %persistent_db. Retrieved items will have their
1167: values unescaped. If the item is 'domains; then the returned
1168: value will be a hash pointer. Otherwise, if the item contains
1169: commas (before unescaping), the returned value will be an array pointer.
1170:
1171: =cut
1172:
1173: ######################################################################
1174: ######################################################################
1175: sub get_persistent_data {
1176: my $filename = shift;
1177: my @Vars = @{shift()};
1178: my @Values; # Return array
1179: return undef if (! -e $filename);
1180: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
1181: &GDBM_READER(),0640));
1182: foreach my $name (@Vars) {
1183: if (! exists($persistent_db{$name})) {
1184: push @Values, undef;
1185: next;
1186: }
1187: if ($name eq 'domains') {
1188: my %valueshash;
1189: my @items= map { &unescape($_); } split(',',$persistent_db{$name});
1190: foreach my $item (@items) {
1191: if ($item =~ /=/) {
1192: my ($key,$val) = map { &unescape($_); } split(/=/,$item);
1193: $valueshash{$key} = $val;
1194: }
1195: }
1196: push(@Values,\%valueshash);
1197: } else {
1198: my @values = map {
1199: &unescape($_);
1200: } split(',',$persistent_db{$name});
1201: if (@values <= 1) {
1202: push @Values,$values[0];
1203: } else {
1204: push @Values,\@values;
1205: }
1206: }
1207: }
1208: untie (%persistent_db);
1209: return @Values;
1210: }
1211:
1212: ######################################################################
1213: ######################################################################
1214:
1215: =pod
1216:
1217: =item &make_persistent()
1218:
1219: Inputs: Hash of values to save, filename of persistent database.
1220:
1221: Store variables away to the %persistent_db.
1222: Values will be escaped. Values that are array pointers will have their
1223: elements escaped and concatenated in a comma separated string. Values
1224: that are hash pointers will have their keys and values escaped and
1225: concatenated in a comma separated string.
1226:
1227: =cut
1228:
1229: ######################################################################
1230: ######################################################################
1231: sub make_persistent {
1232: my %save = %{shift()};
1233: my $filename = shift;
1234: return undef if (! tie(%persistent_db,'GDBM_File',
1235: $filename,&GDBM_WRCREAT(),0640));
1236: foreach my $name (keys(%save)) {
1237: my @values=();
1238: if (ref($save{$name}) eq 'ARRAY') {
1239: @values = @{$save{$name}};
1240: } elsif (ref($save{$name}) eq 'HASH') {
1241: foreach my $key (%{$save{$name}}) {
1242: push(@values,&escape($key).'='.&escape($save{$name}{$key}));
1243: }
1244: } else {
1245: @values = $save{$name};
1246: }
1247: # We handle array and hash references, but not recursively.
1248: my $store = join(',', map { &escape($_); } @values );
1249: $persistent_db{$name} = $store;
1250: }
1251: untie(%persistent_db);
1252: return 1;
1253: }
1254:
1255: ######################################################################
1256: ######################################################################
1257:
1258: =pod
1259:
1260: =item &make_form_data_persistent()
1261:
1262: Inputs: filename of persistent database.
1263:
1264: Store most form variables away to the %persistent_db.
1265: Values will be escaped. Values that are array pointers will have their
1266: elements escaped and concatenated in a comma separated string.
1267:
1268: =cut
1269:
1270: ######################################################################
1271: ######################################################################
1272: sub make_form_data_persistent {
1273: my $r = shift;
1274: my $filename = shift;
1275: my %save;
1276: foreach (keys(%env)) {
1277: next if (!/^form/ || /submit/);
1278: $save{$_} = $env{$_};
1279: }
1280: return &make_persistent(\%save,$filename);
1281: }
1282:
1283: ######################################################################
1284: ######################################################################
1285:
1286: =pod
1287:
1288: =item &parse_advanced_search()
1289:
1290: Parse advanced search form and return the following:
1291:
1292: =over 4
1293:
1294: =item $query Scalar containing an SQL query.
1295:
1296: =item $customquery Scalar containing a custom query.
1297:
1298: =item $customshow Scalar containing commands to show custom metadata.
1299:
1300: =item $libraries_to_query Reference to array of domains to search.
1301:
1302: =back
1303:
1304: =cut
1305:
1306: ######################################################################
1307: ######################################################################
1308: sub parse_advanced_search {
1309: my ($r,$closebutton,$hidden_fields)=@_;
1310: my @BasicFields = ('title','author','subject','keywords','url','version',
1311: 'notes','abstract','extension','owner','authorspace',
1312: # 'custommetadata','customshow',
1313: 'modifyinguser','standards','mime');
1314: my @StatsFields = &statfields();
1315: my @EvalFields = &evalfields();
1316: my $fillflag=0;
1317: my $pretty_search_string = "";
1318: # Clean up fields for safety
1319: for my $field (@BasicFields,
1320: 'creationdatestart_month','creationdatestart_day',
1321: 'creationdatestart_year','creationdateend_month',
1322: 'creationdateend_day','creationdateend_year',
1323: 'lastrevisiondatestart_month','lastrevisiondatestart_day',
1324: 'lastrevisiondatestart_year','lastrevisiondateend_month',
1325: 'lastrevisiondateend_day','lastrevisiondateend_year') {
1326: $env{'form.'.$field}=~s/[^\w\/\s\(\)\=\-\"\'.\*]//g;
1327: }
1328: foreach ('mode','form','element') {
1329: # is this required? Hmmm.
1330: next if (! exists($env{'form.'.$_}));
1331: $env{'form.'.$_}=&unescape($env{'form.'.$_});
1332: $env{'form.'.$_}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1333: }
1334: # Preprocess the category form element.
1335: $env{'form.category'} = 'any' if (! defined($env{'form.category'}) ||
1336: ref($env{'form.category'}));
1337: #
1338: # Check to see if enough information was filled in
1339: foreach my $field (@BasicFields) {
1340: if (&filled($env{'form.'.$field})) {
1341: $fillflag++;
1342: }
1343: }
1344: foreach my $field (@StatsFields,@EvalFields) {
1345: if (&filled($env{'form.'.$field.'_max'})) {
1346: $fillflag++;
1347: }
1348: if (&filled($env{'form.'.$field.'_min'})) {
1349: $fillflag++;
1350: }
1351: }
1352:
1353: for my $field ('lowestgradelevel','highestgradelevel') {
1354: if ( $env{'form.'.$field} =~ /^\d+$/ &&
1355: $env{'form.'.$field} > 0) {
1356: $fillflag++;
1357: }
1358: }
1359: if ($env{'form.area'} eq 'portfolio') {
1360: # Added metadata fields
1361: for (my $i=0; $i<$env{'form.numaddedfields'} ; $i++) {
1362: my $field = $env{'form.addedfield_'.$i};
1363: $field =~ s/^\s*(\S*)\s*$/$1/;
1364: $field =~ s/\W/_/g;
1365: if ($field ne '') {
1366: $fillflag++;
1367: }
1368: }
1369: }
1370: if (! $fillflag) {
1371: &output_blank_field_error($r,$closebutton,
1372: 'phase=disp_adv&area='.$env{'form.area'}.
1373: '&catalogmode='.$env{'form.catalogmode'},
1374: $hidden_fields);
1375: return;
1376: }
1377: # Turn the form input into a SQL-based query
1378: my $query='';
1379: my @queries;
1380: my $font = '<font color="#800000" face="helvetica">';
1381: # Evaluate logical expression AND/OR/NOT phrase fields.
1382: foreach my $field (@BasicFields) {
1383: next if (!defined($env{'form.'.$field}) || $env{'form.'.$field} eq '');
1384: my ($error,$SQLQuery) =
1385: &process_phrase_input($env{'form.'.$field},
1386: $env{'form.'.$field.'_related'},$field);
1387: if (defined($error)) {
1388: &output_unparsed_phrase_error($r,$closebutton,
1389: 'phase=disp_adv&area='.$env{'form.area'}.
1390: '&catalogmode='.$env{'form.catalogmode'}.
1391: $hidden_fields,$field);
1392: return;
1393: } else {
1394: $pretty_search_string .=
1395: $font.$field.'</font>: '.$env{'form.'.$field};
1396: if ($env{'form.'.$field.'_related'}) {
1397: my @Words =
1398: &Apache::loncommon::get_related_words
1399: ($env{'form.'.$field});
1400: if (@Words) {
1401: $pretty_search_string.= ' with related words: '.
1402: join(', ',@Words[0..4]);
1403: } else {
1404: $pretty_search_string.= ' with related words.';
1405: }
1406: }
1407: $pretty_search_string .= '<br />';
1408: push (@queries,$SQLQuery);
1409: }
1410: }
1411: #
1412: # Make the 'mime' from 'form.category' and 'form.extension'
1413: #
1414: my $searchphrase;
1415: if (exists($env{'form.category'}) &&
1416: $env{'form.category'} !~ /^\s*$/ &&
1417: $env{'form.category'} ne 'any') {
1418: my @extensions = &Apache::loncommon::filecategorytypes
1419: ($env{'form.category'});
1420: if (scalar(@extensions) > 0) {
1421: $searchphrase = join(' OR ',@extensions);
1422: }
1423: }
1424: if (defined($searchphrase)) {
1425: my ($error,$SQLsearch) = &process_phrase_input($searchphrase,0,'mime');
1426: push @queries,$SQLsearch;
1427: $pretty_search_string .=$font.'mime</font> contains <b>'.
1428: $searchphrase.'</b><br />';
1429: }
1430: #
1431: # Evaluate option lists
1432: if ($env{'form.lowestgradelevel'} &&
1433: $env{'form.lowestgradelevel'} ne '0' &&
1434: $env{'form.lowestgradelevel'} =~ /^\d+$/) {
1435: push(@queries,
1436: '(lowestgradelevel>='.$env{'form.lowestgradelevel'}.')');
1437: $pretty_search_string.="lowestgradelevel>=".
1438: $env{'form.lowestgradelevel'}."<br />\n";
1439: }
1440: if ($env{'form.highestgradelevel'} &&
1441: $env{'form.highestgradelevel'} ne '0' &&
1442: $env{'form.highestgradelevel'} =~ /^\d+$/) {
1443: push(@queries,
1444: '(highestgradelevel<='.$env{'form.highestgradelevel'}.')');
1445: $pretty_search_string.="highestgradelevel<=".
1446: $env{'form.highestgradelevel'}."<br />\n";
1447: }
1448: if ($env{'form.language'} and $env{'form.language'} ne 'any') {
1449: push @queries,"(language like \"$env{'form.language'}\")";
1450: $pretty_search_string.=$font."language</font>= ".
1451: &Apache::loncommon::languagedescription($env{'form.language'}).
1452: "<br />\n";
1453: }
1454: if ($env{'form.copyright'} and $env{'form.copyright'} ne 'any') {
1455: push @queries,"(copyright like \"$env{'form.copyright'}\")";
1456: $pretty_search_string.=$font."copyright</font> = ".
1457: &Apache::loncommon::copyrightdescription($env{'form.copyright'}).
1458: "<br />\n";
1459: }
1460: if ($env{'form.area'} eq 'portfolio') {
1461: #
1462: # Added metadata fields
1463: for (my $i=0; $i<$env{'form.numaddedfields'} ; $i++) {
1464: my $field = $env{'form.addedfield_'.$i};
1465: $field =~ s/^\s*(\S*)\s*$/$1/;
1466: $field =~ s/\W/_/g;
1467: $field =~ tr/A-Z/a-z/;
1468: if ($field ne '') {
1469: my $value = $env{'form.addedvalues_'.$i};
1470: if ($value ne '') {
1471: $value =~ s/'/''/g; #' stupid emacs
1472: my ($error,$query) =
1473: &process_phrase_input($value,0,'pf.value');
1474: if (!defined($error)) {
1475: push(@queries,"pf.field = '$field' AND $query");
1476: $pretty_search_string .=
1477: $font.$field.'</font>: '.
1478: $env{'form.addedvalues_'.$i}.'<br />';
1479: }
1480: } else {
1481: push(@queries,"pf.field = '$field' AND pf.value IS NULL");
1482: }
1483: }
1484: }
1485: } else {
1486: #
1487: # Statistics
1488: foreach my $field (@StatsFields,@EvalFields) {
1489: my ($min,$max);
1490: if (exists($env{'form.'.$field.'_min'}) &&
1491: $env{'form.'.$field.'_min'} ne '') {
1492: $min = $env{'form.'.$field.'_min'};
1493: }
1494: if (exists($env{'form.'.$field.'_max'}) &&
1495: $env{'form.'.$field.'_max'} ne '') {
1496: $max = $env{'form.'.$field.'_max'};
1497: }
1498: next if (! defined($max) && ! defined($min));
1499: if (defined($min) && defined($max)) {
1500: ($min,$max) = sort {$a <=>$b} ($min,$max);
1501: }
1502: if (defined($min) && $min =~ /^(\d+\.\d+|\d+|\.\d+)$/) {
1503: push(@queries,'('.$field.'>'.$min.')');
1504: $pretty_search_string.=$font.$field.'</font>>'.$min.'<br />';
1505: }
1506: if (defined($max) && $max =~ /^(\d+\.\d+|\d+|\.\d+)$/) {
1507: push(@queries,'('.$field.'<'.$max.')');
1508: $pretty_search_string.=$font.$field.'</font><'.$max.'<br />';
1509: }
1510: }
1511: }
1512: #
1513: # Evaluate date windows
1514: my $cafter =
1515: &Apache::lonhtmlcommon::get_date_from_form('creationdate1');
1516: my $cbefore =
1517: &Apache::lonhtmlcommon::get_date_from_form('creationdate2');
1518: if ($cafter > $cbefore) {
1519: my $tmp = $cafter;
1520: $cafter = $cbefore;
1521: $cbefore = $tmp;
1522: }
1523: my $mafter =
1524: &Apache::lonhtmlcommon::get_date_from_form('revisiondate1');
1525: my $mbefore =
1526: &Apache::lonhtmlcommon::get_date_from_form('revisiondate2');
1527: if ($mafter > $mbefore) {
1528: my $tmp = $mafter;
1529: $mafter = $mbefore;
1530: $mbefore = $tmp;
1531: }
1532: my ($datequery,$error,$prettydate)=&build_date_queries($cafter,$cbefore,
1533: $mafter,$mbefore);
1534: if (defined($error)) {
1535: &output_date_error($r,$error,$closebutton,$hidden_fields);
1536: } elsif (defined($datequery)) {
1537: # Here is where you would set up pretty_search_string to output
1538: # date query information.
1539: $pretty_search_string .= '<br />'.$prettydate.'<br />';
1540: push @queries,$datequery;
1541: }
1542: #
1543: # Process form information for custom metadata querying
1544: my $customquery=undef;
1545: ##
1546: ## The custom metadata search was removed q long time ago mostly
1547: ## because I was unable to figureout exactly how it worked and could
1548: ## not imagine people actually using it. MH
1549: ##
1550: # if ($env{'form.custommetadata'}) {
1551: # $pretty_search_string .=$font."Custom Metadata Search</font>: <b>".
1552: # $env{'form.custommetadata'}."</b><br />\n";
1553: # $customquery=&build_custommetadata_query('custommetadata',
1554: # $env{'form.custommetadata'});
1555: # }
1556: my $customshow=undef;
1557: # if ($env{'form.customshow'}) {
1558: # $pretty_search_string .=$font."Custom Metadata Display</font>: <b>".
1559: # $env{'form.customshow'}."</b><br />\n";
1560: # $customshow=$env{'form.customshow'};
1561: # $customshow=~s/[^\w\s]//g;
1562: # my @fields=split(/\s+/,$customshow);
1563: # $customshow=join(" ",@fields);
1564: # }
1565: ##
1566: ## Deal with restrictions to given domains
1567: ##
1568: my ($libraries_to_query,$pretty_domains_string,$domains_to_query) =
1569: &parse_domain_restrictions();
1570: if ($pretty_domains_string) {
1571: $pretty_search_string .= $pretty_domains_string."<br />\n";
1572: }
1573: #
1574: if (@queries) {
1575: if ($env{'form.area'} eq 'portfolio') {
1576: $query ="SELECT pm.*,pa.keynum,pa.scope FROM portfolio_metadata pm, portfolio_access pa, portfolio_addedfields pf WHERE (pm.url = pa.url AND pf.url = pm.url AND (pa.start < UTC_TIMESTAMP() AND (pa.end IS NULL OR pa.end > UTC_TIMESTAMP())) AND (".join(') AND (',@queries).'))';
1577: } else {
1578: $query="SELECT * FROM metadata WHERE (".join(") AND (",@queries).')';
1579: }
1580: } elsif ($customquery) {
1581: $query = '';
1582: }
1583: #&Apache::lonnet::logthis('advanced query = '.$/.$query);
1584: return ($query,$customquery,$customshow,$libraries_to_query,
1585: $pretty_search_string,$domains_to_query);
1586: }
1587:
1588: sub parse_domain_restrictions {
1589: my $libraries_to_query = undef;
1590: my $domains_to_query = undef;
1591: # $env{'form.domains'} can be either a scalar or an array reference.
1592: # We need an array.
1593: if (! exists($env{'form.domains'}) || $env{'form.domains'} eq '') {
1594: return (undef,'',undef);
1595: }
1596: my @allowed_domains = &Apache::loncommon::get_env_multiple('form.domains');
1597: #
1598: my %domain_hash = ();
1599: my $pretty_domains_string;
1600: foreach (@allowed_domains) {
1601: $domain_hash{$_}++;
1602: }
1603: if ($domain_hash{'any'}) {
1604: $pretty_domains_string = &mt("in all LON-CAPA domains.");
1605: } else {
1606: if (@allowed_domains > 1) {
1607: $pretty_domains_string = &mt("in LON-CAPA domains:");
1608: } else {
1609: $pretty_domains_string = &mt("in LON-CAPA domain ");
1610: }
1611: foreach (sort @allowed_domains) {
1612: $pretty_domains_string .= "<b>".$_."</b> ";
1613: }
1614: my %library_servers = &Apache::lonnet::get_unique_servers(\@allowed_domains,
1615: 'library');
1616: my (%older_library_servers,%okdoms,%domains_for_id);
1617: map { $okdoms{$_} = 1; } @allowed_domains;
1618: foreach my $key (keys(%library_servers)) {
1619: if (&Apache::lonnet::get_server_loncaparev('',$key) =~ /^\'?(\d+)\.(\d+)/) {
1620: my $major = $1;
1621: my $minor = $2;
1622: if (($major < 2) || (($major == 2) && ($minor < 11))) {
1623: map { $older_library_servers{$_} = 1; }
1624: &Apache::lonnet::machine_ids($library_servers{$key});
1625: } else {
1626: my %possdoms;
1627: map { $possdoms{$_}=1 if ($okdoms{$_}); }
1628: &Apache::lonnet::machine_domains($library_servers{$key});
1629: $domains_for_id{$key} = join(',',sort(keys(%possdoms)));
1630: }
1631: }
1632: }
1633: my %servers = (%library_servers,%older_library_servers);
1634: $libraries_to_query = [keys(%servers)];
1635: $domains_to_query = \%domains_for_id;
1636: }
1637: return ($libraries_to_query,
1638: $pretty_domains_string,
1639: $domains_to_query);
1640: }
1641:
1642: ######################################################################
1643: ######################################################################
1644:
1645: =pod
1646:
1647: =item &parse_basic_search()
1648:
1649: Parse the basic search form and return a scalar containing an sql query.
1650:
1651: =cut
1652:
1653: ######################################################################
1654: ######################################################################
1655: sub parse_basic_search {
1656: my ($r,$closebutton)=@_;
1657: #
1658: # Clean up fields for safety
1659: for my $field ('basicexp') {
1660: $env{"form.$field"}=~s/[^\w\s\'\"\!\(\)\-\*]//g;
1661: }
1662: foreach ('mode','form','element') {
1663: # is this required? Hmmm.
1664: next unless (exists($env{"form.$_"}));
1665: $env{"form.$_"}=&unescape($env{"form.$_"});
1666: $env{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1667: }
1668: my ($libraries_to_query,$pretty_domains_string,$domains_to_query) =
1669: &parse_domain_restrictions();
1670: #
1671: # Check to see if enough of a query is filled in
1672: my $search_string = $env{'form.basicexp'};
1673: if (! &filled($search_string)) {
1674: &output_blank_field_error($r,$closebutton,'phase=disp_basic'.
1675: '&area='.$env{'form.area'}.
1676: '&catalogmode='.$env{'form.catalogmode'});
1677: return OK;
1678: }
1679: my $pretty_search_string=$search_string;
1680: my @Queries;
1681: my @fields = ('title','author','subject','notes','abstract','keywords');
1682: my $searchfield;
1683: if ($env{'form.area'} eq 'portfolio') {
1684: $searchfield = 'concat_ws(" ",pm.'.join(',pm.',@fields).')';
1685: } else {
1686: $searchfield = 'concat_ws(" ",'.join(',',@fields).')';
1687: }
1688: my ($error,$SQLQuery) = &process_phrase_input($search_string,
1689: $env{'form.related'},
1690: $searchfield);
1691: if ($error) {
1692: &output_unparsed_phrase_error($r,$closebutton,'phase=disp_basic'.
1693: '&area='.$env{'form.area'}.
1694: '&catalogmode='.$env{'form.catalogmode'},
1695: '','basicexp');
1696: return;
1697: }
1698: push(@Queries,$SQLQuery);
1699: #foreach my $q (@Queries) {
1700: # &Apache::lonnet::logthis(' '.$q);
1701: #}
1702: my $final_query;
1703: if ($env{'form.area'} eq 'portfolio') {
1704: $final_query = 'SELECT pm.*,pa.keynum,pa.scope FROM portfolio_metadata pm, portfolio_access pa WHERE (pm.url = pa.url AND (pa.start < UTC_TIMESTAMP() AND (pa.end IS NULL OR pa.end > UTC_TIMESTAMP())) AND '.join(" AND ",@Queries).')';
1705: } else {
1706: $final_query = 'SELECT * FROM metadata WHERE '.join(" AND ",@Queries);
1707: }
1708: #
1709: if ($env{'form.related'}) {
1710: $pretty_search_string.=' '.&mt('(including related words)');
1711: }
1712: if (defined($pretty_domains_string) && $pretty_domains_string ne '') {
1713: $pretty_search_string .= ' '.$pretty_domains_string;
1714: }
1715: $pretty_search_string .= "<br />\n";
1716: $pretty_search_string =~ s:^<br /> and ::;
1717: &Apache::lonnet::logthis('simple search final query = '.$/.$final_query);
1718: return ($final_query,$pretty_search_string,
1719: $libraries_to_query,$domains_to_query);
1720: }
1721:
1722:
1723: ###############################################################
1724: ###############################################################
1725:
1726: my @Phrases;
1727:
1728: sub concat {
1729: my ($item) = @_;
1730: my $results = '';
1731: foreach (@$item) {
1732: if (ref($_) eq 'ARRAY') {
1733: $results .= join(' ',@$_);
1734: }
1735: }
1736: return $results;
1737: }
1738:
1739: sub process_phrase_input {
1740: my ($phrase,$related,$field)=@_;
1741: #&Apache::lonnet::logthis('phrase = :'.$phrase.':');
1742: my $grammar = <<'ENDGRAMMAR';
1743: searchphrase:
1744: expression /^\Z/ {
1745: # &Apache::lonsearchcat::print_item(\@item,0);
1746: [@item];
1747: }
1748: expression:
1749: phrase(s) {
1750: [@item];
1751: }
1752: phrase:
1753: orword {
1754: [@item];
1755: }
1756: | andword {
1757: [@item];
1758: }
1759: | minusword {
1760: unshift(@::Phrases,$item[1]->[0]);
1761: unshift(@::Phrases,$item[1]->[1]);
1762: [@item];
1763: }
1764: | word {
1765: unshift(@::Phrases,$item[1]);
1766: [@item];
1767: }
1768: #
1769: orword:
1770: word 'OR' phrase {
1771: unshift(@::Phrases,'OR');
1772: unshift(@::Phrases,$item[1]);
1773: [@item];
1774: }
1775: | word 'or' phrase {
1776: unshift(@::Phrases,'OR');
1777: unshift(@::Phrases,$item[1]);
1778: [@item];
1779: }
1780: | minusword 'OR' phrase {
1781: unshift(@::Phrases,'OR');
1782: unshift(@::Phrases,$item[1]->[0]);
1783: unshift(@::Phrases,$item[1]->[1]);
1784: [@item];
1785: }
1786: | minusword 'or' phrase {
1787: unshift(@::Phrases,'OR');
1788: unshift(@::Phrases,$item[1]->[0]);
1789: unshift(@::Phrases,$item[1]->[1]);
1790: [@item];
1791: }
1792: andword:
1793: word phrase {
1794: unshift(@::Phrases,'AND');
1795: unshift(@::Phrases,$item[1]);
1796: [@item];
1797: }
1798: | minusword phrase {
1799: unshift(@::Phrases,'AND');
1800: unshift(@::Phrases,$item[1]->[0]);
1801: unshift(@::Phrases,$item[1]->[1]);
1802: [@item];
1803: }
1804: #
1805: minusword:
1806: '-' word {
1807: [$item[2],'NOT'];
1808: }
1809: word:
1810: "'" term(s) "'" {
1811: &Apache::lonsearchcat::concat(\@item);
1812: }
1813: | '"' term(s) '"' {
1814: &Apache::lonsearchcat::concat(\@item);
1815: }
1816: | term {
1817: $item[1];
1818: }
1819: term:
1820: /[\w\Q:!@#$%^&*()+_=|{}<>,.;\\\/?\E\-]+/ {
1821: $item[1];
1822: }
1823: ENDGRAMMAR
1824: #
1825: # The end result of parsing the phrase with the grammar is an array
1826: # @::Phrases.
1827: # $phrase = "gene splicing" or cat -> "gene splicing","OR","cat"
1828: # $phrase = "genetic engineering" -dna ->
1829: # "genetic engineering","AND","NOT","dna"
1830: # $phrase = cat or dog -poodle -> "cat","OR","dog","AND","NOT","poodle"
1831: undef(@::Phrases);
1832: my $p = new Parse::RecDescent($grammar);
1833: if (! defined($p->searchphrase($phrase))) {
1834: &Apache::lonnet::logthis('lonsearchcat:unable to process:'.$phrase);
1835: return 'Unable to process phrase '.$phrase;
1836: }
1837: #
1838: # Go through the phrases and make sense of them.
1839: # Apply modifiers NOT OR and AND to the phrases.
1840: my @NewPhrases;
1841: while(@::Phrases) {
1842: my $phrase = shift(@::Phrases);
1843: # &Apache::lonnet::logthis('phrase = '.$phrase);
1844: my $phrasedata;
1845: if ($phrase =~ /^(NOT|OR|AND)$/) {
1846: if ($phrase eq 'OR') {
1847: $phrasedata->{'or'}++;
1848: if (! @::Phrases) { $phrasedata = undef; last; }
1849: $phrase = shift(@::Phrases);
1850: } elsif ($phrase eq 'AND') {
1851: $phrasedata->{'and'}++;
1852: if (! @::Phrases) { $phrasedata = undef; last; }
1853: $phrase = shift(@::Phrases);
1854: }
1855: if ($phrase eq 'NOT') {
1856: $phrasedata->{'negate'}++;
1857: if (! @::Phrases) { $phrasedata = undef; last; }
1858: $phrase = shift(@::Phrases);
1859: }
1860: }
1861: $phrasedata->{'phrase'} = $phrase;
1862: if ($related) {
1863: my @NewWords;
1864: (undef,@NewWords) = &related_version($phrasedata->{'phrase'});
1865: $phrasedata->{'related_words'} = \@NewWords;
1866: }
1867: push(@NewPhrases,$phrasedata);
1868: }
1869: #
1870: # Actually build the sql query from the phrases
1871: my $SQLQuery;
1872: foreach my $phrase (@NewPhrases) {
1873: my $query;
1874: if ($phrase->{'negate'}) {
1875: $query .= $field.' NOT LIKE "%'.$phrase->{'phrase'}.'%"';
1876: } else {
1877: $query .= $field.' LIKE "%'.$phrase->{'phrase'}.'%"';
1878: }
1879: foreach my $related (@{$phrase->{'related_words'}}) {
1880: if ($phrase->{'negate'}) {
1881: $query .= ' AND '.$field.' NOT LIKE "%'.$related.'%"';
1882: } else {
1883: $query .= ' OR '.$field.' LIKE "%'.$related.'%"';
1884: }
1885: }
1886: if ($SQLQuery) {
1887: if ($phrase->{'or'}) {
1888: $SQLQuery .= ' OR ('.$query.')';
1889: } else {
1890: $SQLQuery .= ' AND ('.$query.')';
1891: }
1892: } else {
1893: $SQLQuery = '('.$query.')';
1894: }
1895: }
1896: #
1897: # &Apache::lonnet::logthis("SQLQuery = $SQLQuery");
1898: #
1899: return undef,$SQLQuery;
1900: }
1901:
1902: ######################################################################
1903: ######################################################################
1904:
1905: =pod
1906:
1907: =item &related_version()
1908:
1909: Modifies an input string to include related words. Words in the string
1910: are replaced with parenthesized lists of 'OR'd words. For example
1911: "torque" is replaced with "(torque OR word1 OR word2 OR ...)".
1912:
1913: Note: Using this twice on a string is probably silly.
1914:
1915: =cut
1916:
1917: ######################################################################
1918: ######################################################################
1919: sub related_version {
1920: my ($word) = @_;
1921: return (undef) if (lc($word) =~ /\b(or|and|not)\b/);
1922: my @Words = &Apache::loncommon::get_related_words($word);
1923: # Only use 4 related words
1924: @Words = ($#Words>4? @Words[0..4] : @Words);
1925: my $result = join " OR ", ($word,@Words);
1926: return $result,sort(@Words);
1927: }
1928:
1929:
1930: ######################################################################
1931: ######################################################################
1932:
1933: =pod
1934:
1935: =item &build_custommetadata_query()
1936:
1937: Constructs a custom metadata query using a rather heinous regular
1938: expression.
1939:
1940: =cut
1941:
1942: ######################################################################
1943: ######################################################################
1944: sub build_custommetadata_query {
1945: my ($field_name,$logic_statement)=@_;
1946: my $q=new Text::Query('abc',
1947: -parse => 'Text::Query::ParseAdvanced',
1948: -build => 'Text::Query::BuildAdvancedString');
1949: $q->prepare($logic_statement);
1950: my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
1951: # quick fix to change literal into xml tag-matching
1952: # will eventually have to write a separate builder module
1953: # wordone=wordtwo becomes\<wordone\>[^\<] *wordtwo[^\<]*\<\/wordone\>
1954: $matchexp =~ s/(\w+)\\=([\w\\\+]+)?# wordone=wordtwo is changed to
1955: /\\<$1\\>?# \<wordone\>
1956: \[\^\\<\]?# [^\<]
1957: \*$2\[\^\\<\]?# *wordtwo[^\<]
1958: \*\\<\\\/$1\\>?# *\<\/wordone\>
1959: /g;
1960: return $matchexp;
1961: }
1962:
1963:
1964: ######################################################################
1965: ######################################################################
1966:
1967: =pod
1968:
1969: =item &build_date_queries()
1970:
1971: Builds a SQL logic query to check time/date entries.
1972: Also reports errors (check for /^Incorrect/).
1973:
1974: =cut
1975:
1976: ######################################################################
1977: ######################################################################
1978: sub build_date_queries {
1979: my ($cafter,$cbefore,$mafter,$mbefore) = @_;
1980: my ($result,$error,$pretty_string);
1981: #
1982: # Verify the input
1983: if (! defined($cafter) && ! defined($cbefore) &&
1984: ! defined($mafter) && ! defined($mbefore)) {
1985: # This is an okay situation, so return undef for the error
1986: return (undef,undef,undef);
1987: }
1988: if ((defined($cafter) && ! defined($cbefore)) ||
1989: (defined($cbefore) && ! defined($cafter))) {
1990: # This is bad, so let them know
1991: $error = &mt('Incorrect entry for the creation date. '.
1992: 'You must specify both the beginning and ending dates.');
1993: }
1994: if (! defined($error) &&
1995: ((defined($mafter) && ! defined($mbefore)) ||
1996: (defined($mbefore) && ! defined($mafter)))) {
1997: # This is also bad, so let them know
1998: $error = &mt('Incorrect entry for the last revision date. '.
1999: 'You must specify both the beginning and ending dates.');
2000: }
2001: if (! defined($error)) {
2002: #
2003: # Build the queries
2004: my @queries;
2005: if (defined($cbefore) && defined($cafter)) {
2006: my (undef,undef,undef,$caday,$camon,$cayear) = localtime($cafter);
2007: my (undef,undef,undef,$cbday,$cbmon,$cbyear) = localtime($cbefore);
2008: # Correct for year being relative to 1900
2009: $cayear+=1900; $cbyear+=1900;
2010: # Correct month; localtime gives month 0..11 but MySQL expects 1..12
2011: $camon++; $cbmon++;
2012: my $cquery=
2013: '(creationdate BETWEEN '.
2014: "'".$cayear.'-'.$camon.'-'.$caday."'".
2015: ' AND '.
2016: "'".$cbyear.'-'.$cbmon.'-'.$cbday." 23:59:59')";
2017: $pretty_string .= '<br />' if (defined($pretty_string));
2018: $pretty_string .=
2019: &mt('created between [_1] and [_2]',
2020: &Apache::lonlocal::locallocaltime($cafter),
2021: &Apache::lonlocal::locallocaltime($cbefore+24*60*60-1));
2022: push(@queries,$cquery);
2023: $pretty_string =~ s/ 00:00:00//g;
2024: }
2025: if (defined($mbefore) && defined($mafter)) {
2026: my (undef,undef,undef,$maday,$mamon,$mayear) = localtime($mafter);
2027: my (undef,undef,undef,$mbday,$mbmon,$mbyear) = localtime($mbefore);
2028: # Correct for year being relative to 1900
2029: $mayear+=1900; $mbyear+=1900;
2030: # Correct month; localtime gives month 0..11 but MySQL expects 1..12
2031: $mamon++; $mbmon++;
2032: my $mquery=
2033: '(lastrevisiondate BETWEEN '.
2034: "'".$mayear.'-'.$mamon.'-'.$maday."'".
2035: ' AND '.
2036: "'".$mbyear.'-'.$mbmon.'-'.$mbday." 23:59:59')";
2037: push(@queries,$mquery);
2038: $pretty_string .= '<br />' if (defined($pretty_string));
2039: $pretty_string .=
2040: &mt('last revised between [_1] and [_2]',
2041: &Apache::lonlocal::locallocaltime($mafter),
2042: &Apache::lonlocal::locallocaltime($mbefore+24*60*60-1));
2043: $pretty_string =~ s/ 00:00:00//g;
2044: }
2045: if (@queries) {
2046: $result .= join(" AND ",@queries);
2047: }
2048: }
2049: return ($result,$error,$pretty_string);
2050: }
2051:
2052: ######################################################################
2053: ######################################################################
2054:
2055: =pod
2056:
2057: =item ©right_check()
2058:
2059: Inputs: $Metadata, a hash pointer of metadata for a resource.
2060:
2061: Returns: 1 if the resource is available to the user making the query,
2062: 0 otherwise.
2063:
2064: =cut
2065:
2066: ######################################################################
2067: ######################################################################
2068: sub copyright_check {
2069: my $Metadata = shift;
2070: # Check copyright tags and skip results the user cannot use
2071: my (undef,undef,$resdom,$resname) = split('/',
2072: $Metadata->{'url'});
2073: # Check for priv
2074: if ($Metadata->{'copyright'} eq 'priv') {
2075: unless (($env{'user.name'} eq $resname) &&
2076: ($env{'user.domain'} eq $resdom)) {
2077: return 0;
2078: }
2079: }
2080: # Check for domain
2081: if (($Metadata->{'copyright'} eq 'domain') &&
2082: ($env{'user.domain'} ne $resdom)) {
2083: return 0;
2084: }
2085: # Check for custom rights
2086: if ($Metadata->{'copyright'} eq 'custom') {
2087: return &Apache::lonnet::customaccess('bre',$Metadata->{'url'});
2088: }
2089: return 1;
2090: }
2091:
2092: ######################################################################
2093: ######################################################################
2094:
2095: =pod
2096:
2097: =item &ensure_db_and_table()
2098:
2099: Ensure we can get lonmysql to connect to the database and the table we
2100: need exists.
2101:
2102: Inputs: $r, table id
2103:
2104: Returns: undef on error, 1 if the table exists.
2105:
2106: =cut
2107:
2108: ######################################################################
2109: ######################################################################
2110: sub ensure_db_and_table {
2111: my ($r,$table) = @_;
2112: ##
2113: ## Sanity check the table id.
2114: ##
2115: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
2116: $r->print(&Apache::loncommon::start_page('Error')
2117: .'<p class="LC_error">'
2118: .&mt('Unable to retrieve search results. '
2119: .'Unable to determine the table results were saved in.')
2120: .'</p>'
2121: . '<p>'.&mt('Internal info:').'</p>'
2122: .'<pre>'.$table.'</pre>'
2123: .&Apache::loncommon::end_page()
2124: );
2125: return undef;
2126: }
2127: ##
2128: ## Make sure we can connect and the table exists.
2129: ##
2130: my $connection_result = &Apache::lonmysql::connect_to_db();
2131: if (!defined($connection_result)) {
2132: $r->print(
2133: '<p class="LC_error">'
2134: .&mt('Unable to connect to the MySQL database where your results are saved.')
2135: .'</p>'
2136: .&Apache::loncommon::end_page()
2137: );
2138: &Apache::lonnet::logthis("lonsearchcat: unable to get lonmysql to".
2139: " connect to database.");
2140: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
2141: return undef;
2142: }
2143: my $table_check = &Apache::lonmysql::check_table($table);
2144: if (! defined($table_check)) {
2145: $r->print(
2146: '<p class="LC_error">'
2147: .&mt('A MySQL error has occurred.')
2148: .'</p></form>'
2149: .&Apache::loncommon::end_page());
2150: &Apache::lonnet::logthis("lonmysql was unable to determine the status".
2151: " of table ".$table);
2152: return undef;
2153: } elsif (! $table_check) {
2154: $r->print(
2155: '<p class="LC_error">'
2156: .&mt('The table of results could not be found.')
2157: .'</p>'
2158: );
2159: &Apache::lonnet::logthis("The user requested a table, ".$table.
2160: ", that could not be found.");
2161: return undef;
2162: }
2163: return 1;
2164: }
2165:
2166: ######################################################################
2167: ######################################################################
2168:
2169: =pod
2170:
2171: =item &print_sort_form()
2172:
2173: The sort feature is not implemented at this time. This form just prints
2174: a link to change the search query.
2175:
2176: =cut
2177:
2178: ######################################################################
2179: ######################################################################
2180: sub print_sort_form {
2181: my ($r,$pretty_query_string,$target) = @_;
2182:
2183: ##
2184: my %SortableFields=&Apache::lonlocal::texthash(
2185: id => 'Default',
2186: title => 'Title',
2187: author => 'Author',
2188: subject => 'Subject',
2189: url => 'URL',
2190: version => 'Version Number',
2191: mime => 'Mime type',
2192: lang => 'Language',
2193: owner => 'Owner/Publisher',
2194: copyright => 'Copyright',
2195: hostname => 'Host',
2196: creationdate => 'Creation Date',
2197: lastrevisiondate => 'Revision Date'
2198: );
2199: ##
2200: my $table = $env{'form.table'};
2201: return if (! &ensure_db_and_table($r,$table));
2202: ##
2203: ## Get the number of results
2204: ##
2205: my $total_results = &Apache::lonmysql::number_of_rows($table);
2206: if (! defined($total_results)) {
2207: $r->print("A MySQL error has occurred.</form>".
2208: &Apache::loncommon::end_page());
2209: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
2210: " of rows in table ".$table);
2211: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
2212: return;
2213: }
2214: my $args;
2215: if ($target eq '_parent') {
2216: $args = {'links_target' => $target};
2217: }
2218: my $start_page = &Apache::loncommon::start_page('Results',undef,$args);
2219: my $breadcrumbs=
2220: &Apache::lonhtmlcommon::breadcrumbs('Searching','Searching',
2221: $env{'form.catalogmode'} ne 'import',
2222: '','','','','','',$target);
2223: my $result = <<END;
2224: $start_page
2225: $breadcrumbs
2226: <div class="LC_landmark" role="main">
2227: <form name="statusform" action="" method="post" target="$target">
2228: <input type="hidden" name="catalogmode" value="import" />
2229: <input type="hidden" name="acts" value="" />
2230: END
2231:
2232: #<h2>Sort Results</h2>
2233: #Sort by: <select size="1" name="sortby" onchange="javascript:change_sort();">
2234: # $env{'form.sortby'} = 'id' if (! defined($env{'form.sortby'}));
2235: # foreach (keys(%SortableFields)) {
2236: # $result.="<option name=\"$_\"";
2237: # if ($_ eq $env{'form.sortby'}) {
2238: # $result.=" selected ";
2239: # }
2240: # $result.=" >$SortableFields{$_}</option>\n";
2241: # }
2242: # $result.="</select>\n";
2243: my $revise = &revise_button();
2244: $result.='<p>'
2245: .&mt('Total of [quant,_1,match,matches] to your query.',$total_results)
2246: .' '.$revise.'</p>'
2247: .'<p>'.&mt('Search: ').$pretty_query_string
2248: .'</p></form>';
2249: $r->print($result.'</div>'.&Apache::loncommon::end_page());
2250: return;
2251: }
2252:
2253: #####################################################################
2254: #####################################################################
2255:
2256: =pod
2257:
2258: =item MySQL Table Description
2259:
2260: MySQL table creation requires a precise description of the data to be
2261: stored. The use of the correct types to hold data is vital to efficient
2262: storage and quick retrieval of records. The columns must be described in
2263: the following format:
2264:
2265: =cut
2266:
2267: #####################################################################
2268: #####################################################################
2269: #
2270: # These should probably be scoped but I don't have time right now...
2271: #
2272: my @Datatypes;
2273: my @Fullindicies;
2274:
2275: ######################################################################
2276: ######################################################################
2277:
2278: =pod
2279:
2280: =item &create_results_table()
2281:
2282: Creates the table of search results by calling lonmysql. Stores the
2283: table id in $env{'form.table'}
2284:
2285: Inputs: search area - either res or portfolio
2286:
2287: Returns: the identifier of the table on success, undef on error.
2288:
2289: =cut
2290:
2291: ######################################################################
2292: ######################################################################
2293: sub set_up_table_structure {
2294: my ($tabletype) = @_;
2295: my ($datatypes,$fullindicies) =
2296: &LONCAPA::lonmetadata::describe_metadata_storage($tabletype);
2297: # Copy the table description before modifying it...
2298: @Datatypes = @{$datatypes};
2299: unshift(@Datatypes,{name => 'id',
2300: type => 'MEDIUMINT',
2301: restrictions => 'UNSIGNED NOT NULL',
2302: primary_key => 'yes',
2303: auto_inc => 'yes' });
2304: @Fullindicies = @{$fullindicies};
2305: return;
2306: }
2307:
2308: sub create_results_table {
2309: my ($area) = @_;
2310: if ($area eq 'portfolio') {
2311: &set_up_table_structure('portfolio_search');
2312: } else {
2313: &set_up_table_structure('metadata');
2314: }
2315: my $table = &Apache::lonmysql::create_table
2316: ( { columns => \@Datatypes,
2317: FULLTEXT => [{'columns' => \@Fullindicies},],
2318: } );
2319: if (defined($table)) {
2320: $env{'form.table'} = $table;
2321: return $table;
2322: }
2323: return undef; # Error...
2324: }
2325:
2326: ######################################################################
2327: ######################################################################
2328:
2329: =pod
2330:
2331: =item Search Status update functions
2332:
2333: Each of the following functions changes the values of one of the
2334: input fields used to display the search status to the user. The names
2335: should be explanatory.
2336:
2337: Inputs: Apache request handler ($r), text to display.
2338:
2339: Returns: Nothing.
2340:
2341: =over 4
2342:
2343: =item &update_count_status()
2344:
2345: =item &update_status()
2346:
2347: =item &update_seconds()
2348:
2349: =back
2350:
2351: =cut
2352:
2353: ######################################################################
2354: ######################################################################
2355: sub update_count_status {
2356: my ($r,$text) = @_;
2357: $text =~ s/\'/\\\'/g;
2358: $r->print(<<SCRIPT);
2359: <script type="text/javascript">
2360: // <![CDATA[
2361: document.statusform.count.value = ' $text'
2362: // ]]>
2363: </script>
2364: SCRIPT
2365:
2366: $r->rflush();
2367: }
2368:
2369: sub update_status {
2370: my ($r,$text) = @_;
2371: $text =~ s/\'/\\\'/g;
2372: $r->print(<<SCRIPT);
2373: <script type="text/javascript">
2374: // <![CDATA[
2375: document.statusform.status.value = ' $text'
2376: // ]]>
2377: </script>
2378: SCRIPT
2379:
2380: $r->rflush();
2381: }
2382:
2383: sub reload_result_frame {
2384: my ($r) = @_;
2385: my $newloc = '/adm/searchcat?phase=results&persistent_db_id='.
2386: $env{'form.persistent_db_id'}.'&area='.$env{'form.area'}.
2387: '&catalogmode='.$env{'form.catalogmode'};
2388: $r->print(<<SCRIPT);
2389: <script type="text/javascript">
2390: parent.update_results("$newloc");
2391: </script>
2392: SCRIPT
2393:
2394: $r->rflush();
2395: }
2396:
2397: {
2398: my $max_time = 60; # seconds for the search to complete
2399: my $start_time = 0;
2400: my $last_time = 0;
2401:
2402: sub reset_timing {
2403: $start_time = 0;
2404: $last_time = 0;
2405: }
2406:
2407: sub time_left {
2408: if ($start_time == 0) {
2409: $start_time = time;
2410: }
2411: my $time_left = $max_time - (time - $start_time);
2412: $time_left = 0 if ($time_left < 0);
2413: return $time_left;
2414: }
2415:
2416: sub update_seconds {
2417: my ($r) = @_;
2418: my $time = &time_left();
2419: if (($last_time-$time) > 0) {
2420: $r->print(<<SCRIPT);
2421: <script type="text/javascript">
2422: // <![CDATA[
2423: document.statusform.seconds.value = '$time'
2424: // ]]>
2425: </script>
2426: SCRIPT
2427:
2428: $r->rflush();
2429: }
2430: $last_time = $time;
2431: }
2432:
2433: }
2434:
2435: ######################################################################
2436: ######################################################################
2437:
2438: =pod
2439:
2440: =item &revise_button()
2441:
2442: Inputs: None
2443:
2444: Returns: html string for a 'revise search' button.
2445:
2446: =cut
2447:
2448: ######################################################################
2449: ######################################################################
2450: sub revise_button {
2451: my $revisetext = &mt('Revise search');
2452: my $revise_phase = 'disp_basic';
2453: $revise_phase = 'disp_adv' if ($env{'form.searchmode'} eq 'advanced');
2454: my $newloc = '/adm/searchcat'.
2455: '?persistent_db_id='.$env{'form.persistent_db_id'}.
2456: '&cleargroupsort=1'.
2457: '&phase='.$revise_phase.
2458: '&area='.$env{'form.area'}.
2459: '&catalogmode='.$env{'form.catalogmode'};
2460: my $result = qq{<input type="button" value="$revisetext" name="revise"} .
2461: qq{ onclick="parent.location='$newloc';" /> };
2462: return $result;
2463: }
2464:
2465: ######################################################################
2466: ######################################################################
2467:
2468: =pod
2469:
2470: =item &run_search()
2471:
2472: Executes a search query by sending it the the other servers and putting the
2473: results into MySQL.
2474:
2475: =cut
2476:
2477: ######################################################################
2478: ######################################################################
2479: sub run_search {
2480: my ($r,$query,$customquery,$customshow,$serverlist,
2481: $pretty_string,$area,$domainsref,$target) = @_;
2482: my $tabletype = 'metadata';
2483: if ($area eq 'portfolio') {
2484: $tabletype = 'portfolio_search';
2485: }
2486: my $connection = $r->connection;
2487: #
2488: # Print run_search header
2489: #
2490: my $args;
2491: if ($target eq '_parent') {
2492: $args = {'links_target' => $target};
2493: }
2494: my $start_page = &Apache::loncommon::start_page('Search Status',undef,$args);
2495: my $breadcrumbs =
2496: &Apache::lonhtmlcommon::breadcrumbs('Searching','Searching',
2497: $env{'form.catalogmode'} ne 'import',
2498: '','','','','','',$target);
2499: $r->print(<<END);
2500: $start_page
2501: $breadcrumbs
2502: <div class="LC_landmark" role="main">
2503: END
2504: # Remove leading and trailing <br />
2505: $pretty_string =~ s:^\s*<br />::i;
2506: $pretty_string =~ s:(<br />)*\s*$::im;
2507: my @Lines = split("<br />",$pretty_string);
2508: # I keep getting blank items at the end of the list, hence the following:
2509: while ($Lines[-1] =~ /^\s*$/ && @Lines) {
2510: pop(@Lines);
2511: }
2512: if (@Lines > 2) {
2513: $pretty_string = join '<br />',(@Lines[0..2],'...<br />');
2514: }
2515: $r->print(&mt("Search: [_1]",$pretty_string));
2516: $r->rflush();
2517: #
2518: # Determine the servers we need to contact.
2519: my (@Servers_to_contact,%domains_by_server);
2520: if (defined($serverlist)) {
2521: if (ref($serverlist) eq 'ARRAY') {
2522: @Servers_to_contact = @$serverlist;
2523: } else {
2524: @Servers_to_contact = ($serverlist);
2525: }
2526: if (ref($domainsref) eq 'HASH') {
2527: foreach my $server (@Servers_to_contact) {
2528: $domains_by_server{$server} = $domainsref->{$server};
2529: }
2530: }
2531: } else {
2532: my %library_servers = &Apache::lonnet::unique_library();
2533: my (%all_library_servers, %older_library_servers);
2534: foreach my $key (keys(%library_servers)) {
2535: if (&Apache::lonnet::get_server_loncaparev('',$key) =~ /^\'?(\d+)\.(\d+)/) {
2536: my $major = $1;
2537: my $minor = $2;
2538: if (($major < 2) || (($major == 2) && ($minor < 11))) {
2539: map { $older_library_servers{$_} = 1; }
2540: &Apache::lonnet::machine_ids($library_servers{$key});
2541: }
2542: }
2543: }
2544: %all_library_servers = (%library_servers,%older_library_servers);
2545: @Servers_to_contact = sort(keys(%all_library_servers));
2546: foreach my $server (@Servers_to_contact) {
2547: $domains_by_server{$server} =
2548: join(',',sort(&Apache::lonnet::machine_domains($all_library_servers{$server})));
2549: }
2550: }
2551: my %Server_status;
2552: #
2553: # Check on the mysql table we will use to store results.
2554: my $table =$env{'form.table'};
2555: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
2556: $r->print("Unable to determine table id to save search results in.".
2557: "The search has been aborted.".
2558: &Apache::loncommon::end_page());
2559: return;
2560: }
2561: my $table_status = &Apache::lonmysql::check_table($table);
2562: if (! defined($table_status)) {
2563: $r->print("Unable to determine status of table.".
2564: &Apache::loncommon::end_page());
2565: &Apache::lonnet::logthis("Bogus table id of $table for ".
2566: "$env{'user.name'} @ $env{'user.domain'}");
2567: &Apache::lonnet::logthis("lonmysql error = ".
2568: &Apache::lonmysql::get_error());
2569: return;
2570: }
2571: if (! $table_status) {
2572: &Apache::lonnet::logthis("lonmysql error = ".
2573: &Apache::lonmysql::get_error());
2574: &Apache::lonnet::logthis("lonmysql debug = ".
2575: &Apache::lonmysql::get_debug());
2576: &Apache::lonnet::logthis('table status = "'.$table_status.'"');
2577: $r->print("The table id,$table, we tried to use is invalid.".
2578: "The search has been aborted.".
2579: &Apache::loncommon::end_page());
2580: return;
2581: }
2582: ##
2583: ## Prepare for the big loop.
2584: my $hitcountsum;
2585: my $oldhitcountsum;
2586: my $displaycount;
2587: my %matches;
2588: my $server;
2589: my $status;
2590: my $revise = &revise_button();
2591: $r->print('<form name="statusform" action="" method="post">'."\n".
2592: '<input type="hidden" name="acts" value="" />'."\n".
2593: '<table border="0"><tr><td>'."\n".
2594: &Apache::loncommon::start_data_table());
2595: $r->print(&Apache::loncommon::start_data_table_header_row()
2596: .'<th>'.&mt('Status').'</th>'
2597: .'<th>'.&mt('Total Matches').'</th>'
2598: .'<th>'.&mt('Time Remaining').'</th>'
2599: .&Apache::loncommon::end_data_table_header_row()
2600: .&Apache::loncommon::start_data_table_row()
2601: .'<td><input type="text" name="status" value="" size="50" readonly="readonly" /></td>'
2602: .'<td><input type="text" name="count" value="" size="10" readonly="readonly" /></td>'
2603: .'<td><input type="text" name="seconds" value="" size="8" readonly="readonly" /></td>'
2604: .&Apache::loncommon::end_data_table_row()
2605: .&Apache::loncommon::end_data_table()
2606: .'</td><td> </td><td>'.$revise.'</td></tr></table></form>');
2607: $r->rflush();
2608: &reset_timing();
2609: &update_seconds($r);
2610: &update_status($r,&mt('contacting [_1]',$Servers_to_contact[0]));
2611: while (&time_left() &&
2612: ((@Servers_to_contact) || keys(%Server_status))) {
2613: &update_seconds($r);
2614: #
2615: # Send out a search request
2616: if (@Servers_to_contact) {
2617: # Contact one server
2618: my $server = shift(@Servers_to_contact);
2619: &update_status($r,&mt('contacting [_1]',$server));
2620: my $reply=&Apache::lonnet::metadata_query($query,$customquery,
2621: $customshow,[$server],\%domains_by_server);
2622: ($server) = keys(%$reply);
2623: $Server_status{$server} = $reply->{$server};
2624: } else {
2625: # wait a sec. to give time for files to be written
2626: # This sleep statement is here instead of outside the else
2627: # block because we do not want to pause if we have servers
2628: # left to contact.
2629: if (scalar (keys(%Server_status))) {
2630: &update_status($r,
2631: &mt('waiting on [_1]',join(' ',keys(%Server_status))));
2632: }
2633: sleep(0.1);
2634: }
2635: #
2636: # Loop through the servers we have contacted but do not
2637: # have results from yet, looking for results.
2638: foreach my $server (keys(%Server_status)) {
2639: last if ($connection->aborted());
2640: &update_seconds($r);
2641: my $status = $Server_status{$server};
2642: if ($status eq 'con_lost') {
2643: delete ($Server_status{$server});
2644: next;
2645: }
2646: $status=~s|/||g;
2647:
2648:
2649:
2650: my $datafile=LONCAPA::tempdir().$status;
2651: if (-e $datafile && ! -e "$datafile.end") {
2652: &update_status($r,&mt('Receiving results from [_1]',$server));
2653: next;
2654: }
2655: last if ($connection->aborted());
2656: if (-e "$datafile.end") {
2657: &update_status($r,&mt('Reading results from [_1]',$server));
2658: if (-z "$datafile") {
2659: delete($Server_status{$server});
2660: next;
2661: }
2662: my $fh;
2663: if (!($fh=Apache::File->new($datafile))) {
2664: $r->print("Unable to open search results file for ".
2665: "server $server. Omitting from search");
2666: delete($Server_status{$server});
2667: next;
2668: }
2669: # Read in the whole file.
2670: while (my $result = <$fh>) {
2671: last if ($connection->aborted());
2672: #
2673: # Records are stored one per line
2674: chomp($result);
2675: next if (! $result);
2676: #
2677: # Parse the result.
2678: my %Fields = &parse_raw_result($result,$server,$tabletype);
2679: $Fields{'hostname'} = $server;
2680: #
2681: # Skip based on copyright
2682: next if (! ©right_check(\%Fields));
2683:
2684: if ($area eq 'portfolio') {
2685: next if (defined($matches{$Fields{'url'}}));
2686: # Skip unless access control set to public or passphrase-protected
2687: next unless (($Fields{'scope'} eq 'public') || ($Fields{'scope'} eq 'guest'));
2688: $matches{$Fields{'url'}} = 1;
2689: }
2690: #
2691: # Store the result in the mysql database
2692: my $result = &Apache::lonmysql::store_row($table,\%Fields);
2693: if (! defined($result)) {
2694: $r->print(&Apache::lonmysql::get_error());
2695: }
2696: #
2697: $hitcountsum ++;
2698: &update_seconds($r);
2699: if ($hitcountsum % 50 == 0) {
2700: &update_count_status($r,$hitcountsum);
2701: }
2702: }
2703: $fh->close();
2704: # $server is only deleted if the results file has been
2705: # found and (successfully) opened. This may be a bad idea.
2706: delete($Server_status{$server});
2707: }
2708: last if ($connection->aborted());
2709: if ($oldhitcountsum < $hitcountsum) {
2710: &update_count_status($r,$hitcountsum);
2711: if (($hitcountsum <= $env{'form.show'}) ||
2712: (!$displaycount && $hitcountsum)) {
2713: reload_result_frame($r);
2714: $displaycount = $hitcountsum;
2715: }
2716: $oldhitcountsum = $hitcountsum;
2717: }
2718: }
2719: last if ($connection->aborted());
2720: &update_seconds($r);
2721: }
2722: &update_status($r,&mt('Search Complete on Server [_1]',$server));
2723: &update_seconds($r);
2724: #
2725: &Apache::lonmysql::disconnect_from_db(); # This is unneccessary
2726: #
2727: # We have run out of time or run out of servers to talk to and
2728: # results to get, so let the client know the top frame needs to be
2729: # loaded from /adm/searchcat
2730: $r->print('</div>'.&Apache::loncommon::end_page());
2731: # if ($env{'form.catalogmode'} ne 'import') {
2732: $r->print(<<SCRIPT);
2733: <script>
2734: window.location='/adm/searchcat?phase=sort&area=$env{"form.area"}&catalogmode=$env{"form.catalogmode"}&persistent_db_id=$env{"form.persistent_db_id"}';
2735: </script>
2736: SCRIPT
2737: # }
2738: return;
2739: }
2740:
2741: ######################################################################
2742: ######################################################################
2743:
2744: =pod
2745:
2746: =item &prev_next_buttons()
2747:
2748: Returns html for the previous and next buttons on the search results page.
2749:
2750: =cut
2751:
2752: ######################################################################
2753: ######################################################################
2754: sub prev_next_buttons {
2755: my ($current_min,$show,$total,$parms) = @_;
2756: return '' if ($show eq 'all'); # No links if you get them all at once.
2757: #
2758: # Create buttons
2759: return '<p class="LC_nobreak">'
2760: .'<input type="submit" name="prev" value="<"'
2761: .' title="'.&mt('Previous').'" />'
2762: .' '
2763: .'<input type="submit" name="reload" value="'.&mt('Reload').'" />'
2764: .' '
2765: .'<input type="submit" name="next" value=">"'
2766: .' title="'.&mt('Next').'" />'
2767: .'</p>';
2768: }
2769:
2770: ######################################################################
2771: ######################################################################
2772:
2773: =pod
2774:
2775: =item &display_results()
2776:
2777: Prints the results out for selection and perusal.
2778:
2779: =cut
2780:
2781: ######################################################################
2782: ######################################################################
2783: sub display_results {
2784: my ($r,$importbutton,$closebutton,$diropendb,$area) = @_;
2785: my $connection = $r->connection;
2786: $r->print(&search_results_header($importbutton,$closebutton));
2787: ##
2788: ## Set viewing function
2789: ##
2790: my $viewfunction = $Views{$env{'form.viewselect'}};
2791: if (!defined($viewfunction)) {
2792: $r->print('<p class="LC_error">'
2793: .&mt('Internal Error - Bad view selected.')
2794: .'</p>'."\n"
2795: .'</form></div>'.&Apache::loncommon::end_page());
2796: $r->rflush();
2797: return;
2798: }
2799: ##
2800: ## $checkbox_num is a count of the number of checkboxes output on the
2801: ## page this is used only during catalogmode=import.
2802: my $checkbox_num = 0;
2803: ##
2804: ## Get the catalog controls setup
2805: ##
2806: my $action = '/adm/searchcat?phase=results&area='.$env{'form.area'}.
2807: '&catalogmode='.$env{'form.catalogmode'};
2808: ##
2809: ## Deal with import by opening the import db file.
2810: if ($env{'form.catalogmode'} eq 'import') {
2811: if (! tie(%groupsearch_db,'GDBM_File',$diropendb,
2812: &GDBM_WRCREAT(),0640)) {
2813: # NOTE: this can happen when a previous request to searchcat?phase=results gets interrupted
2814: # (%groupsearch_db is not untied)
2815: $r->print('<p class="LC_error">'.
2816: &mt('Unable to save import results.').
2817: '</p>'.
2818: '</form></div>'.
2819: &Apache::loncommon::end_page());
2820: $r->rflush();
2821: return;
2822: }
2823: # untie %groupsearch_db if the connection gets aborted before the end
2824: $r->register_cleanup(sub {
2825: untie %groupsearch_db if (tied(%groupsearch_db));
2826: });
2827: }
2828: ##
2829: ## Prepare the table for querying
2830: my $table = $env{'form.table'};
2831: return if (! &ensure_db_and_table($r,$table));
2832: ##
2833: ## Get the number of results
2834: my $total_results = &Apache::lonmysql::number_of_rows($table);
2835: if (! defined($total_results)) {
2836: $r->print('<p class="LC_error">'.
2837: &mt('A MySQL error has occurred.').
2838: '</p>'.
2839: '</form></div>'.
2840: &Apache::loncommon::end_page());
2841: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
2842: " of rows in table ".$table);
2843: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
2844: return;
2845: }
2846: ##
2847: ## Determine how many results we need to get
2848: $env{'form.start'} = 1 if (! exists($env{'form.start'}));
2849: $env{'form.show'} = 20 if (! exists($env{'form.show'}));
2850: if (exists($env{'form.prev'})) {
2851: $env{'form.start'} -= $env{'form.show'};
2852: } elsif (exists($env{'form.next'})) {
2853: $env{'form.start'} += $env{'form.show'};
2854: }
2855: $env{'form.start'} = 1 if ($env{'form.start'}<1);
2856: $env{'form.start'} = $total_results if ($env{'form.start'}>$total_results);
2857: my $min = $env{'form.start'};
2858: my $max;
2859: if ($env{'form.show'} eq 'all') {
2860: $max = $total_results ;
2861: } else {
2862: $max = $min + $env{'form.show'} - 1;
2863: $max = $total_results if ($max > $total_results);
2864: }
2865: ##
2866: ## Output form elements
2867: $r->print(&hidden_field('table').
2868: &hidden_field('phase').
2869: &hidden_field('persistent_db_id').
2870: &hidden_field('start').
2871: &hidden_field('area')
2872: );
2873: #
2874: # Build sorting selector
2875: my @fields =
2876: (
2877: {key=>'default' },
2878: {key=>'title' },
2879: {key =>'author' },
2880: {key =>'subject'},
2881: {key =>'url',desc=>'URL'},
2882: {key =>'keywords'},
2883: {key =>'language'},
2884: {key =>'creationdate'},
2885: {key =>'lastrevisiondate'},
2886: {key =>'owner'},
2887: {key =>'copyright'},
2888: {key =>'authorspace'},
2889: {key =>'lowestgradelevel'},
2890: {key =>'highestgradelevel'},
2891: {key =>'standards',desc=>'Standards'},
2892: );
2893: if ($area eq 'portfolio') {
2894: push(@fields,
2895: (
2896: {key => 'scope'},
2897: {key => 'keynum'},
2898: ));
2899: } else {
2900: push(@fields,
2901: (
2902: {key =>'count',desc=>'Number of accesses'},
2903: {key =>'stdno',desc=>'Students Attempting'},
2904: {key =>'avetries',desc=>'Average Number of Tries'},
2905: {key =>'difficulty',desc=>'Mean Degree of Difficulty'},
2906: {key =>'disc',desc=>'Mean Degree of Discrimination'},
2907: {key =>'clear',desc=>'Evaluation: Clear'},
2908: {key =>'technical',desc=>'Evaluation: Technically Correct'},
2909: {key =>'correct',desc=>'Evaluation: Material is Correct'},
2910: {key =>'helpful',desc=>'Evaluation: Material is Helpful'},
2911: {key =>'depth',desc=>'Evaluation: Material has Depth'},
2912: ));
2913: }
2914: my %fieldnames = &Apache::lonmeta::fieldnames();
2915: my @field_order;
2916: foreach my $field_data (@fields) {
2917: push(@field_order,$field_data->{'key'});
2918: if (! exists($field_data->{'desc'})) {
2919: $field_data->{'desc'}=$fieldnames{$field_data->{'key'}};
2920: } else {
2921: if (! defined($field_data->{'desc'})) {
2922: $field_data->{'desc'} = ucfirst($field_data->{'key'});
2923: }
2924: $field_data->{'desc'} = &mt($field_data->{'desc'});
2925: }
2926: }
2927: my %sort_fields = map {$_->{'key'},$_->{'desc'}} @fields;
2928: $sort_fields{'select_form_order'} = \@field_order;
2929: $env{'form.sortorder'} = 'desc' if (! exists($env{'form.sortorder'}));
2930: if (! exists($env{'form.sortfield'})) {
2931: if ($area eq 'portfolio') {
2932: $env{'form.sortfield'} = 'owner';
2933: } else {
2934: $env{'form.sortfield'} = 'count';
2935: }
2936: }
2937: if (! exists($env{'form.sortorder'})) {
2938: if ($env{'form.sortfield'}=~/^(count|stdno|disc|clear|technical|correct|helpful)$/) {
2939: $env{'form.sortorder'}='desc';
2940: } else {
2941: $env{'form.sortorder'}='asc';
2942: }
2943: }
2944: my $sortform = '<span class="LC_nobreak"><span id="LC_sortby">'
2945: .&mt('Sort by:').'</span> '
2946: .&Apache::loncommon::select_form($env{'form.sortfield'},
2947: 'sortfield',
2948: \%sort_fields,'','','',
2949: 'LC_sortby')
2950: .' '
2951: .&Apache::loncommon::select_form($env{'form.sortorder'},
2952: 'sortorder',
2953: {asc =>&mt('Ascending'),
2954: desc=>&mt('Descending')
2955: },'','','','LC_sortby')
2956: .'</span>';
2957: ##
2958: ## Display links for 'prev' and 'next' pages (if necessary) and Display Options
2959: $r->print('<fieldset>'."\n"
2960: .'<legend>'.&mt('Display Options').'</legend>'."\n"
2961: .$sortform
2962: .' '
2963: .&viewoptions()
2964: .'</fieldset>'
2965: .&prev_next_buttons($min,$env{'form.show'},$total_results)
2966: );
2967:
2968: if ($total_results == 0) {
2969: $r->print('<h1 class="LC_search_results">'.&mt('There are currently no results.').'</h1>'.
2970: '</form></div>'.
2971: &Apache::loncommon::end_page());
2972: return;
2973: } else {
2974: $r->print('<h1 class="LC_search_results">'.
2975: mt('Results [_1] to [_2] out of [_3]',
2976: $min,$max,$total_results).
2977: "</h1>\n");
2978: }
2979: ##
2980: ## Get results from MySQL table
2981: my $sort_command = 'id>='.$min.' AND id<='.$max;
2982: my $order;
2983: if (exists($env{'form.sortorder'})) {
2984: if ($env{'form.sortorder'} eq 'asc') {
2985: $order = 'ASC';
2986: } elsif ($env{'form.sortorder'} eq 'desc') {
2987: $order = 'DESC';
2988: } else {
2989: $order = '';
2990: }
2991: } else {
2992: $order = '';
2993: }
2994: if ($env{'form.sortfield'} ne 'default' &&
2995: exists($sort_fields{$env{'form.sortfield'}})) {
2996: $sort_command = $env{'form.sortfield'}.' IS NOT NULL '.
2997: 'ORDER BY '.$env{'form.sortfield'}.' '.$order.
2998: ' LIMIT '.($min-1).','.($max-$min+1);
2999: }
3000: my @Results = &Apache::lonmysql::get_rows($table,$sort_command);
3001: ##
3002: ## Loop through the results and output them.
3003: my $tabletype = 'metadata';
3004: if ($area eq 'portfolio') {
3005: $tabletype = 'portfolio_search';
3006: }
3007: $r->print(&Apache::loncommon::start_data_table().
3008: &Apache::loncommon::start_data_table_header_row().
3009: '<th>'.&mt('Data').'</th>');
3010: if (($env{'form.viewselect'} eq 'detailedpreview') ||
3011: ($env{'form.viewselect'} eq 'summarypreview')) {
3012: $r->print('<th>'.&mt('Preview').'</th>');
3013: }
3014: $r->print(&Apache::loncommon::end_data_table_header_row());
3015: foreach my $row (@Results) {
3016: if ($connection->aborted()) {
3017: &cleanup();
3018: return;
3019: }
3020: my %Fields = %{&parse_row($tabletype,@$row)};
3021: my $output;
3022: if (! defined($Fields{'title'}) || $Fields{'title'} eq '') {
3023: $Fields{'title'} = 'Untitled';
3024: }
3025: my $prefix=&catalogmode_output($Fields{'title'},$Fields{'url'},
3026: $Fields{'id'},$checkbox_num++);
3027: # Render the result into html
3028: $output.= &$viewfunction($prefix,%Fields);
3029: # Print them out as they come in.
3030: $r->print(&Apache::loncommon::start_data_table_row()
3031: .'<td>'
3032: .$output
3033: .'</td>'
3034: .&Apache::loncommon::end_data_table_row()
3035: );
3036: $r->rflush();
3037: }
3038: $r->print(&Apache::loncommon::end_data_table());
3039: if (@Results < 1) {
3040: $r->print('<p class="LC_info">'
3041: .&mt('There were no results matching your query.')
3042: .'</p>');
3043: } else {
3044: $r->print(
3045: &prev_next_buttons($min,$env{'form.show'},$total_results,
3046: "table=".$env{'form.table'}.
3047: "&phase=results".
3048: "&persistent_db_id=".
3049: $env{'form.persistent_db_id'})
3050: );
3051: }
3052: $r->print('</form></div>'.&Apache::loncommon::end_page());
3053: $r->rflush();
3054: untie %groupsearch_db if (tied(%groupsearch_db));
3055: return;
3056: }
3057:
3058: ######################################################################
3059: ######################################################################
3060:
3061: =pod
3062:
3063: =item &catalogmode_output($title,$url,$fnum,$checkbox_num)
3064:
3065: Returns html needed for the various catalog modes. Gets inputs from
3066: $env{'form.catalogmode'}. Stores data in %groupsearch_db.
3067:
3068: =cut
3069:
3070: ######################################################################
3071: ######################################################################
3072: sub catalogmode_output {
3073: my $output = '';
3074: my ($title,$url,$fnum,$checkbox_num) = @_;
3075: if ($env{'form.catalogmode'} eq 'interactive') {
3076: $title=~ s/\'/\\\'/g;
3077: if ($env{'form.catalogmode'} eq 'interactive') {
3078: $output.=<<END
3079: <font size='-1'><input type="button" name="returnvalues" value="select"
3080: onclick="javascript:select_data('$title','$url')" />
3081: </font>
3082: END
3083: }
3084: } elsif ($env{'form.catalogmode'} eq 'import') {
3085: $groupsearch_db{"pre_${fnum}_link"}=$url;
3086: $groupsearch_db{"pre_${fnum}_title"}=$title;
3087: $output.=<<END;
3088: <font size='-1'>
3089: <input type="checkbox" name="returnvalues" value="select"
3090: onclick="javascript:queue($checkbox_num,$fnum)" />
3091: </font>
3092: END
3093: }
3094: return $output;
3095: }
3096: ######################################################################
3097: ######################################################################
3098:
3099: =pod
3100:
3101: =item &parse_row()
3102:
3103: Parse a row returned from the database.
3104:
3105: =cut
3106:
3107: ######################################################################
3108: ######################################################################
3109: sub parse_row {
3110: my ($tabletype,@Row) = @_;
3111: my %Fields;
3112: if (! scalar(@Datatypes)) {
3113: &set_up_table_structure($tabletype);
3114: }
3115: for (my $i=0;$i<=$#Row;$i++) {
3116: $Fields{$Datatypes[$i]->{'name'}}=&unescape($Row[$i]);
3117: }
3118: $Fields{'language'} =
3119: &Apache::loncommon::languagedescription($Fields{'language'});
3120: $Fields{'copyrighttag'} =
3121: &Apache::loncommon::copyrightdescription($Fields{'copyright'});
3122: $Fields{'mimetag'} =
3123: &Apache::loncommon::filedescription($Fields{'mime'});
3124: return \%Fields;
3125: }
3126:
3127: ###########################################################
3128: ###########################################################
3129:
3130: =pod
3131:
3132: =item &parse_raw_result()
3133:
3134: Takes a line from the file of results and parse it. Returns a hash
3135: with keys according to column labels
3136:
3137: In addition, the following tags are set by calling the appropriate
3138: lonnet function: 'language', 'copyrighttag', 'mimetag'.
3139:
3140: The 'title' field is set to "Untitled" if the title field is blank.
3141:
3142: 'abstract' and 'keywords' are truncated to 200 characters.
3143:
3144: =cut
3145:
3146: ###########################################################
3147: ###########################################################
3148: sub parse_raw_result {
3149: my ($result,$hostname,$tabletype) = @_;
3150: # conclude from self to others regarding fields
3151: my %Fields=&LONCAPA::lonmetadata::metadata_col_to_hash
3152: ($tabletype,
3153: map {
3154: &unescape($_);
3155: } (split(/\,/,$result)) );
3156: return %Fields;
3157: }
3158:
3159: ###########################################################
3160: ###########################################################
3161:
3162: =pod
3163:
3164: =item &handle_custom_fields()
3165:
3166: =cut
3167:
3168: ###########################################################
3169: ###########################################################
3170: sub handle_custom_fields {
3171: my @results = @{shift()};
3172: my $customshow='';
3173: my $extrashow='';
3174: my @customfields;
3175: if ($env{'form.customshow'}) {
3176: $customshow=$env{'form.customshow'};
3177: $customshow=~s/[^\w\s]//g;
3178: my @fields=map {
3179: "<font color=\"#008000\">$_:</font><!-- $_ -->";
3180: } split(/\s+/,$customshow);
3181: @customfields=split(/\s+/,$customshow);
3182: if ($customshow) {
3183: $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
3184: }
3185: }
3186: my $customdata='';
3187: my %customhash;
3188: foreach my $result (@results) {
3189: if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
3190: my $tmp=$result;
3191: $tmp=~s/^custom\=//;
3192: my ($k,$v)=map {&unescape($_);
3193: } split(/\,/,$tmp);
3194: $customhash{$k}=$v;
3195: }
3196: }
3197: return ($extrashow,\@customfields,\%customhash);
3198: }
3199:
3200: ######################################################################
3201: ######################################################################
3202:
3203: =pod
3204:
3205: =item &search_results_header()
3206:
3207: Output the proper html headers and javascript code to deal with different
3208: calling modes.
3209:
3210: Takes most inputs directly from %env, except $mode.
3211:
3212: =over 4
3213:
3214: =item $mode is either (at this writing) 'Basic' or 'Advanced'
3215:
3216: =back
3217:
3218: The following environment variables are checked:
3219:
3220: =over 4
3221:
3222: =item 'form.catalogmode'
3223:
3224: Checked for 'interactive' and 'import'.
3225:
3226: =item 'form.mode'
3227:
3228: Checked for existance & 'edit' mode.
3229:
3230: =item 'form.form'
3231:
3232: Contains the name of the form that has the input fields to set
3233:
3234: =item 'form.element'
3235:
3236: the name of the input field to put the URL into
3237:
3238: =item 'form.titleelement'
3239:
3240: the name of the input field to put the title into
3241:
3242: =back
3243:
3244: =cut
3245:
3246: ######################################################################
3247: ######################################################################
3248: sub search_results_header {
3249: my ($importbutton,$closebutton) = @_;
3250:
3251: my $js;
3252: # output beginning of search page
3253: # conditional output of script functions dependent on the mode in
3254: # which the search was invoked
3255: if ($env{'form.catalogmode'} eq 'interactive'){
3256: if (! exists($env{'form.mode'}) || $env{'form.mode'} ne 'edit') {
3257: $js.=<<SCRIPT;
3258: <script type="text/javascript">
3259: // <![CDATA[
3260: function select_data(title,url) {
3261: changeTitle(title);
3262: changeURL(url);
3263: parent.close();
3264: }
3265: function changeTitle(val) {
3266: if (parent.opener.inf.document.forms.resinfo.elements.t) {
3267: parent.opener.inf.document.forms.resinfo.elements.t.value=val;
3268: }
3269: }
3270: function changeURL(val) {
3271: if (parent.opener.inf.document.forms.resinfo.elements.u) {
3272: parent.opener.inf.document.forms.resinfo.elements.u.value=val;
3273: }
3274: }
3275: // ]]>
3276: </script>
3277: SCRIPT
3278: } elsif ($env{'form.mode'} eq 'edit') {
3279: my $form = $env{'form.form'};
3280: my $element = $env{'form.element'};
3281: my $titleelement = $env{'form.titleelement'};
3282: my $changetitle;
3283: if (!$titleelement) {
3284: $changetitle='function changeTitle(val) {}';
3285: } else {
3286: $changetitle=<<END;
3287: function changeTitle(val) {
3288: if (parent.targetwin.document) {
3289: parent.targetwin.document.forms["$form"].elements["$titleelement"].value=val;
3290: } else {
3291: var url = 'forms[\"$form\"].elements[\"$titleelement\"].value';
3292: alert("Unable to transfer data to "+url);
3293: }
3294: }
3295: END
3296: }
3297:
3298: $js.=<<SCRIPT;
3299: <script type="text/javascript">
3300: // <![CDATA[
3301: function select_data(title,url) {
3302: changeURL(url);
3303: changeTitle(title);
3304: parent.close();
3305: }
3306: $changetitle
3307: function changeURL(val) {
3308: if (parent.targetwin.document) {
3309: parent.targetwin.document.forms["$form"].elements["$element"].value=val;
3310: } else {
3311: var url = 'forms[\"$form\"].elements[\"$element\"].value';
3312: alert("Unable to transfer data to "+url);
3313: }
3314: }
3315: // ]]>
3316: </script>
3317: SCRIPT
3318: }
3319: }
3320: my $inhibit_menu = "&".&Apache::loncommon::inhibit_menu_check();
3321: $js.=<<SCRIPT if $env{'form.catalogmode'} eq 'import';
3322: <script type="text/javascript">
3323: // <![CDATA[
3324: function queue(checkbox_num,val) {
3325: if (document.forms.results.returnvalues.length != "undefined" &&
3326: typeof(document.forms.results.returnvalues.length) == "number") {
3327: if (document.forms.results.returnvalues[checkbox_num].checked) {
3328: parent.statusframe.document.forms.statusform.elements.acts.value +='1a'+val+'b';
3329: } else {
3330: parent.statusframe.document.forms.statusform.elements.acts.value +='0a'+val+'b';
3331: }
3332: } else {
3333: if (document.forms.results.returnvalues.checked) {
3334: parent.statusframe.document.forms.statusform.elements.acts.value +='1a'+val+'b';
3335: } else {
3336: parent.statusframe.document.forms.statusform.elements.acts.value +='0a'+val+'b';
3337: }
3338: }
3339: }
3340: function select_group() {
3341: parent.window.location=
3342: "/adm/groupsort?mode=$env{'form.mode'}&catalogmode=import$inhibit_menu&acts="+
3343: parent.statusframe.document.forms.statusform.elements.acts.value;
3344: }
3345: // ]]>
3346: </script>
3347: SCRIPT
3348:
3349: $js.=<<SCRIPT;
3350: <script type="text/javascript">
3351: \$(document).ready(function() {
3352: parent.done_loading_results();
3353: });
3354: </script>
3355: SCRIPT
3356:
3357: my $start_page = &Apache::loncommon::start_page(undef,$js,
3358: {'only_body' =>1,
3359: 'add_wishlist' =>1,
3360: 'add_modal' =>1});
3361: my $result=<<END;
3362: $start_page
3363: <div class="LC_landmark" role="main">
3364: <form name="results" method="post" action="/adm/searchcat">
3365: $importbutton
3366: END
3367: return $result;
3368: }
3369:
3370: sub results_link {
3371: my $basic_link = "/adm/searchcat?"."&table=".$env{'form.table'}.
3372: "&area=".$env{'form.area'}.
3373: "&catalogmode=".$env{'form.catalogmode'}.
3374: "&persistent_db_id=".$env{'form.persistent_db_id'};
3375: my $results_link = $basic_link."&phase=results".
3376: "&pause=1"."&start=1";
3377: return $results_link;
3378: }
3379:
3380: ######################################################################
3381: ######################################################################
3382: sub print_frames_interface {
3383: my $r = shift;
3384: my $basic_link = "/adm/searchcat?table=".$env{'form.table'}.
3385: "&area=".$env{'form.area'}.
3386: "&catalogmode=".$env{'form.catalogmode'}.
3387: "&persistent_db_id=".$env{'form.persistent_db_id'};
3388: my $run_search_link = $basic_link."&phase=run_search";
3389: my $results_link = &results_link();
3390: my $js = <<JS;
3391: <script type="text/javascript">
3392: // <![CDATA[
3393: var targetwin = opener;
3394: var queue = '';
3395:
3396: var loading_results = true;
3397: var need_reloading = false;
3398: var new_location;
3399: function update_results(newloc) {
3400: if (loading_results) {
3401: need_reloading = true;
3402: new_location = newloc;
3403: } else {
3404: loading_results = true;
3405: resultsframe.location = newloc;
3406: }
3407: }
3408: function done_loading_results() {
3409: loading_results = false;
3410: if (need_reloading) {
3411: need_reloading = false;
3412: update_results(new_location);
3413: }
3414: }
3415: // ]]>
3416: </script>
3417: JS
3418:
3419: my $start_page =
3420: &Apache::loncommon::start_page('LON-CAPA Digital Library Search Results',
3421: $js,
3422: {'frameset' => 1,
3423: 'add_entries' => {
3424: 'rows' => "150,*",},});
3425: my $end_page =
3426: &Apache::loncommon::end_page({'frameset' => 1});
3427:
3428: my $result = <<"ENDFRAMES";
3429: $start_page
3430: <frame name="statusframe" src="$run_search_link">
3431: <frame name="resultsframe" src="$results_link">
3432: $end_page
3433: ENDFRAMES
3434:
3435: $r->print($result);
3436: return;
3437: }
3438:
3439: ######################################################################
3440: ######################################################################
3441:
3442: sub has_stat_data {
3443: my ($values) = @_;
3444: if ( (defined($values->{'count'}) && $values->{'count'} ne '') ||
3445: (defined($values->{'stdno'}) && $values->{'stdno'} ne '') ||
3446: (defined($values->{'disc'}) && $values->{'disc'} ne '') ||
3447: (defined($values->{'avetries'}) && $values->{'avetries'} ne '') ||
3448: (defined($values->{'difficulty'}) && $values->{'difficulty'} ne '')) {
3449: return 1;
3450: }
3451: return 0;
3452: }
3453:
3454: sub statfields {
3455: return ('count','stdno','disc','avetries','difficulty');
3456: }
3457:
3458: sub has_eval_data {
3459: my ($values) = @_;
3460: if ( (defined($values->{'clear'}) && $values->{'clear'} ne '') ||
3461: (defined($values->{'technical'}) && $values->{'technical'} ne '') ||
3462: (defined($values->{'correct'}) && $values->{'correct'} ne '') ||
3463: (defined($values->{'helpful'}) && $values->{'helpful'} ne '') ||
3464: (defined($values->{'depth'}) && $values->{'depth'} ne '')) {
3465: return 1;
3466: }
3467: return 0;
3468: }
3469:
3470: sub evalfields {
3471: return ('clear','technical','correct','helpful','depth');
3472: }
3473:
3474: ######################################################################
3475: ######################################################################
3476:
3477: sub display_tools {
3478: my ($title, $jumpurl) = @_;
3479: my $result;
3480: # Metadata
3481: $result.=
3482: &Apache::loncommon::modal_link(
3483: $jumpurl.'.meta?inhibitmenu=yes',
3484: '<img class="LC_icon" src="/res/adm/pages/catalog.png" alt="Info" />',
3485: 500,500,'_blank',undef,&mt('Metadata'));
3486: # Stored Links
3487: $result.=
3488: ' <a href="javascript:;"'.
3489: ' onclick="set_wishlistlink('."'$title','$jumpurl'".')" '.
3490: 'title="'.&mt('Save a link for this resource in your personal Stored Links repository').'">'.
3491: '<img class="LC_icon" src="/res/adm/pages/wishlist.png" '.
3492: 'alt="Stored Links" style="width:22px;"/></a>';
3493: return $result;
3494: }
3495:
3496: ######################################################################
3497: ######################################################################
3498:
3499: =pod
3500:
3501: =item Metadata Viewing Functions
3502:
3503: Output is a HTML-ified string.
3504:
3505: Input arguments are title, author, subject, url, keywords, version,
3506: notes, short abstract, mime, language, creation date,
3507: last revision date, owner, copyright, hostname, and
3508: extra custom metadata to show.
3509:
3510: =over 4
3511:
3512: =item &detailed_citation_view()
3513:
3514: =cut
3515:
3516: ######################################################################
3517: ######################################################################
3518: sub detailed_citation_view {
3519: my ($prefix,%values) = @_;
3520: my $result;
3521: my $jumpurl=$values{'url'};
3522: $jumpurl=~s|^/ext/|http://|;
3523: $result .=
3524: '<b>'.$prefix.
3525: '<img src="'.&Apache::loncommon::icon($values{'url'}).'" alt="" />'.' '.
3526: '<a href="'.$jumpurl.'?inhibitmenu=yes" '.
3527: 'target="preview" onclick="openMyModal(this.href, 500, 500, \'yes\');return false;">'.$values{'title'}."</a></b>\n".
3528: &display_tools($values{'title'}, $jumpurl).
3529: "<p>\n".
3530: '<b>'.$values{'author'}.'</b>,'.
3531: ' <i>'.$values{'owner'}.'</i><br />';
3532: foreach my $field
3533: (
3534: { name=>'url',
3535: translate => '<b>URL:</b> [_1]',
3536: special => 'url link',},
3537: { name=>'subject',
3538: translate => '<b>Subject:</b> [_1]',},
3539: { name=>'keywords',
3540: translate => '<b>Keywords:</b> [_1]',},
3541: { name=>'notes',
3542: translate => '<b>Notes:</b> [_1]',},
3543: { name=>'mimetag',
3544: translate => '<b>MIME Type:</b> [_1]',},
3545: { name=>'standards',
3546: translate => '<b>Standards:</b>[_1]',},
3547: { name=>'copyrighttag',
3548: translate => '<b>Copyright/Distribution:</b> [_1]',},
3549: { name=>'count',
3550: format => "%d",
3551: translate => '<b>Access Count:</b> [_1]',},
3552: { name=>'stdno',
3553: format => "%d",
3554: translate => '<b>Number of Students:</b> [_1]',},
3555: { name=>'avetries',
3556: format => "%.2f",
3557: translate => '<b>Average Tries:</b> [_1]',},
3558: { name=>'disc',
3559: format => "%.2f",
3560: translate => '<b>Degree of Discrimination:</b> [_1]',},
3561: { name=>'difficulty',
3562: format => "%.2f",
3563: translate => '<b>Degree of Difficulty:</b> [_1]',},
3564: { name=>'clear',
3565: format => "%.2f",
3566: translate => '<b>Clear:</b> [_1]',},
3567: { name=>'depth',
3568: format => "%.2f",
3569: translate => '<b>Depth:</b> [_1]',},
3570: { name=>'helpful',
3571: format => "%.2f",
3572: translate => '<b>Helpful:</b> [_1]',},
3573: { name=>'correct',
3574: format => "%.2f",
3575: translate => '<b>Correct:</b> [_1]',},
3576: { name=>'technical',
3577: format => "%.2f",
3578: translate => '<b>Technical:</b> [_1]',},
3579: { name=>'comefrom_list',
3580: type => 'list',
3581: translate => 'Resources that lead up to this resource in maps',},
3582: { name=>'goto_list',
3583: type => 'list',
3584: translate => 'Resources that follow this resource in maps',},
3585: { name=>'sequsage_list',
3586: type => 'list',
3587: translate => 'Resources using or importing resource',},
3588: ) {
3589: next if (! exists($values{$field->{'name'}}) ||
3590: $values{$field->{'name'}} eq '');
3591: if (exists($field->{'type'}) && $field->{'type'} eq 'list') {
3592: $result .= '<b>'.&mt($field->{'translate'}).'</b>';
3593: foreach my $item (split(',',$values{$field->{'name'}})){
3594: $item = &Apache::lonnet::clutter($item);
3595: $result .= '<br />'.&display_url($item,1).'<br />';
3596: }
3597: } elsif (exists($field->{'format'}) && $field->{'format'} ne ''){
3598: $result.= &mt($field->{'translate'},
3599: sprintf($field->{'format'},
3600: $values{$field->{'name'}}))."<br />\n";
3601: } else {
3602: if ($field->{'special'} eq 'url link') {
3603: $result .= '<br />'.&display_url($jumpurl,1).'<br />';
3604: } else {
3605: $result.= &mt($field->{'translate'},
3606: $values{$field->{'name'}});
3607: }
3608: $result .= "<br />\n";
3609: }
3610: }
3611: $result .= "</p>";
3612: if (exists($values{'extrashow'}) && $values{'extrashow'} ne '') {
3613: $result .= '<p>'.$values{'extrashow'}.'</p>';
3614: }
3615: if (exists($values{'shortabstract'}) && $values{'shortabstract'} ne '') {
3616: $result .= '<p>'.$values{'shortabstract'}.'</p>';
3617: }
3618: return $result;
3619: }
3620:
3621: sub detailed_citation_preview {
3622: my ($prefix,%values)=@_;
3623: return &detailed_citation_view($prefix,%values).
3624: '</td><td>'.
3625: &Apache::lonindexer::showpreview($values{'url'});
3626: }
3627:
3628:
3629: ######################################################################
3630: ######################################################################
3631:
3632: =pod
3633:
3634: =item &summary_view()
3635:
3636: =cut
3637: ######################################################################
3638: ######################################################################
3639: sub summary_view {
3640: my ($prefix,%values) = @_;
3641: my $icon=&Apache::loncommon::icon($values{'url'});
3642: my $result=qq{$prefix<img src="$icon" alt="" />};
3643: if (exists($env{'form.sortfield'}) &&
3644: $env{'form.sortfield'} !~ /^(default|
3645: author|
3646: url|
3647: title|
3648: owner|
3649: lastrevisiondate|
3650: copyright)$/x) {
3651: my $tmp = $values{$env{'form.sortfield'}};
3652: if (! defined($tmp)) { $tmp = 'undefined'; }
3653: $result .= ' '.$tmp.' ';
3654: }
3655: my $jumpurl=$values{'url'};
3656: $jumpurl=~s|^/ext/|http://|;
3657: my $link = '<br />'.&display_url($jumpurl,1).'<br />';
3658: $result .=
3659: '<a href="'.$jumpurl.'?inhibitmenu=yes"'.
3660: ' target="preview" onclick="openMyModal(this.href, 500, 500, \'yes\');return false;">'.$values{'title'}.'</a>'.
3661: &display_tools($values{'title'}, $jumpurl).<<END;
3662: <br />
3663: $link<br />
3664: $values{'author'}, $values{'owner'} -- $values{'lastrevisiondate'}<br />
3665: $values{'copyrighttag'}<br />
3666: $values{'extrashow'}
3667: END
3668: return $result;
3669: }
3670:
3671: sub summary_preview {
3672: my ($prefix,%values)=@_;
3673: return &summary_view($prefix,%values).
3674: '</td><td>'.
3675: &Apache::lonindexer::showpreview($values{'url'});
3676: }
3677:
3678: ######################################################################
3679: ######################################################################
3680:
3681: =pod
3682:
3683: =item &compact_view()
3684:
3685: =cut
3686:
3687: ######################################################################
3688: ######################################################################
3689: sub compact_view {
3690: my ($prefix,%values) = @_;
3691: my $jumpurl=$values{'url'};
3692: $jumpurl=~s|^/ext/|http://|;
3693:
3694: my $link = &display_url($jumpurl,1);
3695:
3696: my $result =
3697: $prefix.'<img src="'.&Apache::loncommon::icon($values{'url'}).'" alt="" />';
3698: if (exists($env{'form.sortfield'}) &&
3699: $env{'form.sortfield'} !~ /^(default|author|url|title)$/) {
3700: my $tmp = $values{$env{'form.sortfield'}};
3701: if (! defined($tmp)) { $tmp = 'undefined'; }
3702: $result .= ' '.$tmp.' ';
3703: }
3704: $jumpurl = &HTML::Entities::encode($jumpurl,'<>&"');
3705: $result.=' <span class="LC_nobreak">'.
3706: '<a href="'.$jumpurl.'?inhibitmenu=yes" target="preview" onclick="openMyModal(this.href, 500, 500, \'yes\');return false;">'.
3707: &HTML::Entities::encode($values{'title'},'<>&"').'</a></span> '.
3708: &display_tools($values{'title'}, $jumpurl).
3709: $link.' <b>'.$values{'author'}.'</b> ('.$values{'domain'}.')';
3710: return $result;
3711: }
3712:
3713: sub display_url {
3714: my ($url,$skiplast) = @_;
3715: my $link;
3716: if ($url=~m|^/ext/|) {
3717: $url=~s|^/ext/|http://|;
3718: $link='<span class="LC_filename">'.$url.'</span>';
3719: } elsif ($url=~m{^(http://|/uploaded/)}) {
3720: $link='<span class="LC_filename">'.$url.'</span>';
3721: } else {
3722: # replace the links to open in a new window
3723: # (because the search opens in a new window, it gets
3724: # confusing when the links open a tab in the
3725: # parent window; ideally we should not force windows)
3726: my $onclick = " onclick=\"window.open(this.href, '_blank', 'toolbar=1,location=1,menubar=0');return false;\"";
3727: $link=&Apache::lonhtmlcommon::crumbs(
3728: $url,
3729: 'preview',
3730: '',
3731: '',
3732: $skiplast,$onclick).' ';
3733: }
3734: return $link;
3735: }
3736:
3737: ######################################################################
3738: ######################################################################
3739:
3740: =pod
3741:
3742: =item &fielded_format_view()
3743:
3744: =cut
3745:
3746: ######################################################################
3747: ######################################################################
3748: sub fielded_format_view {
3749: my ($prefix,%values) = @_;
3750: my $icon=&Apache::loncommon::icon($values{'url'});
3751: my %Translated = &Apache::lonmeta::fieldnames();
3752: my $jumpurl=$values{'url'};
3753: $jumpurl=~s|^/ext/|http://|;
3754:
3755: my $result=<<END;
3756: $prefix <img src="$icon" alt="" />
3757: <dl>
3758: <dt>URL:</dt>
3759: <dd><a href="$jumpurl?inhibitmenu=yes"
3760: target='preview'>$values{'url'}</a>
3761: END
3762: $result .=
3763: &display_tools($values{'title'}, $jumpurl).'
3764: </dd>';
3765: foreach my $field ('title','author','domain','subject','keywords','notes',
3766: 'mimetag','language','creationdate','lastrevisiondate',
3767: 'owner','copyrighttag','hostname','abstract') {
3768: $result .= (' 'x4).'<dt>'.$Translated{$field}.'</dt>'."\n".
3769: (' 'x8).'<dd>'.$values{$field}.'</dd>'."\n";
3770: }
3771: if (&has_stat_data(\%values)) {
3772: foreach my $field (&statfields()) {
3773: $result .= (' 'x4).'<dt>'.$Translated{$field}.'</dt>'."\n".
3774: (' 'x8).'<dd>'.$values{$field}.'</dd>'."\n";
3775: }
3776: }
3777: if (&has_eval_data(\%values)) {
3778: foreach my $field (&evalfields()) {
3779: $result .= (' 'x4).'<dt>'.$Translated{$field}.'</dt>'."\n".
3780: (' 'x8).'<dd>'.$values{$field}.'</dd>'."\n";
3781: }
3782: }
3783: $result .= "</dl>\n";
3784: $result .= $values{'extrashow'};
3785: return $result;
3786: }
3787:
3788: ######################################################################
3789: ######################################################################
3790:
3791: =pod
3792:
3793: =item &xml_sgml_view()
3794:
3795: =back
3796:
3797: =cut
3798:
3799: ######################################################################
3800: ######################################################################
3801: sub xml_sgml_view {
3802: my ($prefix,%values) = @_;
3803: my $xml = '<LonCapaResource>'."\n";
3804: # The usual suspects
3805: foreach my $field ('url','title','author','subject','keywords','notes','domain') {
3806: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3807: }
3808: #
3809: $xml .= "<mimeInfo>\n";
3810: foreach my $field ('mime','mimetag') {
3811: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3812: }
3813: $xml .= "</mimeInfo>\n";
3814: #
3815: $xml .= "<languageInfo>\n";
3816: foreach my $field ('language','languagetag') {
3817: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3818: }
3819: $xml .= "</languageInfo>\n";
3820: #
3821: foreach my $field ('creationdate','lastrevisiondate','owner') {
3822: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3823: }
3824: #
3825: $xml .= "<copyrightInfo>\n";
3826: foreach my $field ('copyright','copyrighttag') {
3827: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3828: }
3829: $xml .= "</copyrightInfo>\n";
3830: $xml .= qq{<repositoryLocation>$values{'hostname'}</repositoryLocation>}.
3831: "\n";
3832: $xml .= qq{<shortabstract>$values{'shortabstract'}</shortabstract>}."\n";
3833: #
3834: if (&has_stat_data(\%values)){
3835: $xml .= "<problemstatistics>\n";
3836: foreach my $field (&statfields()) {
3837: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3838: }
3839: $xml .= "</problemstatistics>\n";
3840: }
3841: #
3842: if (&has_eval_data(\%values)) {
3843: $xml .= "<evaluation>\n";
3844: foreach my $field (&evalfields) {
3845: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3846: }
3847: $xml .= "</evaluation>\n";
3848: }
3849: #
3850: $xml .= "</LonCapaResource>\n";
3851: $xml = &HTML::Entities::encode($xml,'<>&');
3852: my $result=<<END;
3853: $prefix
3854: <pre>
3855: $xml
3856: </pre>
3857: $values{'extrashow'}
3858: END
3859: return $result;
3860: }
3861:
3862: ######################################################################
3863: ######################################################################
3864:
3865: =pod
3866:
3867: =item &filled() see if field is filled.
3868:
3869: =cut
3870:
3871: ######################################################################
3872: ######################################################################
3873: sub filled {
3874: my ($field)=@_;
3875: if ($field=~/\S/ && $field ne 'any') {
3876: return 1;
3877: } else {
3878: return 0;
3879: }
3880: }
3881:
3882: ######################################################################
3883: ######################################################################
3884:
3885: =pod
3886:
3887: =item &output_unparsed_phrase_error()
3888:
3889: =cut
3890:
3891: ######################################################################
3892: ######################################################################
3893: sub output_unparsed_phrase_error {
3894: my ($r,$closebutton,$parms,$hidden_fields,$field)=@_;
3895: my $errorstring;
3896: if ($field eq 'basicexp') {
3897: $errorstring = &mt('Unable to understand the search phrase [_1]. Please modify your search.'
3898: ,'<i>'.$env{'form.basicexp'}.'</i>');
3899: } else {
3900: $errorstring = &mt('Unable to understand the search phrase [_1]: [_2]'
3901: ,'<i>'.$field.'</i>'
3902: ,$env{'form.'.$field});
3903: }
3904: my $heading = &mt('Unparsed Field');
3905: my $revise = &mt('Revise search request');
3906: # make query information persistent to allow for subsequent revision
3907: my $start_page = &Apache::loncommon::start_page('Search');
3908: my $end_page = &Apache::loncommon::end_page();
3909: $r->print(<<ENDPAGE);
3910: $start_page
3911: <form method="post" action="/adm/searchcat">
3912: $hidden_fields
3913: $closebutton
3914: <hr />
3915: <h2>$heading</h2>
3916: <p class="LC_warning">
3917: $errorstring
3918: </p>
3919: <p>
3920: <a href="/adm/searchcat?$parms&persistent_db_id=$env{'form.persistent_db_id'}">$revise</a>
3921: </p>
3922: $end_page
3923: ENDPAGE
3924: }
3925:
3926: ######################################################################
3927: ######################################################################
3928:
3929: =pod
3930:
3931: =item &output_blank_field_error()
3932:
3933: Output a complete page that indicates the user has not filled in enough
3934: information to do a search.
3935:
3936: Inputs: $r (Apache request handle), $closebutton, $parms.
3937:
3938: Returns: nothing
3939:
3940: $parms is extra information to include in the 'Revise search request' link.
3941:
3942: =cut
3943:
3944: ######################################################################
3945: ######################################################################
3946: sub output_blank_field_error {
3947: my ($r,$closebutton,$parms,$hidden_fields)=@_;
3948: my $errormsg = &mt('You did not fill in enough information for the search to be started. You need to fill in relevant fields on the search page in order for a query to be processed.');
3949: my $revise = &mt('Revise Search Request');
3950: my $heading = &mt('Unactionable Search Query');
3951: my $start_page = &Apache::loncommon::start_page('Search');
3952: my $end_page = &Apache::loncommon::end_page();
3953: if ($closebutton) {
3954: $closebutton = '<p>'.$closebutton.'</p><hr />';
3955: } else {
3956: &Apache::lonhtmlcommon::add_breadcrumb
3957: ({href=>'',
3958: text=>$heading,});
3959: $start_page .= &Apache::lonhtmlcommon::breadcrumbs();
3960: }
3961:
3962: $r->print(<<ENDPAGE);
3963: $start_page
3964: <form method="post" action="/adm/searchcat">
3965: $hidden_fields
3966: $closebutton
3967: </form>
3968: <h2>$heading</h2>
3969: <p class="LC_warning">
3970: $errormsg
3971: </p>
3972: <p>
3973: <a href="/adm/searchcat?$parms&persistent_db_id=$env{'form.persistent_db_id'}">$revise</a>
3974: </p>
3975: $end_page
3976: ENDPAGE
3977: return;
3978: }
3979:
3980: ######################################################################
3981: ######################################################################
3982:
3983: =pod
3984:
3985: =item &output_date_error()
3986:
3987: Output a full html page with an error message.
3988:
3989: Inputs:
3990:
3991: $r, the request pointer.
3992: $message, the error message for the user.
3993: $closebutton, the specialized close button needed for groupsearch.
3994:
3995: =cut
3996:
3997: ######################################################################
3998: ######################################################################
3999: sub output_date_error {
4000: my ($r,$message,$closebutton,$hidden_fields)=@_;
4001: # make query information persistent to allow for subsequent revision
4002: my $start_page = &Apache::loncommon::start_page('Search');
4003: my $end_page = &Apache::loncommon::end_page();
4004: my $heading = &mt('Error');
4005: $r->print(<<RESULTS);
4006: $start_page
4007: <form method="post" action="/adm/searchcat">
4008: $hidden_fields
4009: <input type='button' value='Revise search request'
4010: onclick='this.form.submit();' />
4011: $closebutton
4012: </form>
4013: <hr />
4014: <h3>$heading</h3>
4015: <p class="LC_error">
4016: $message
4017: </p>
4018: $end_page
4019: RESULTS
4020: }
4021:
4022: ######################################################################
4023: ######################################################################
4024:
4025: =pod
4026:
4027: =item &start_fresh_session()
4028:
4029: Cleans the global %groupsearch_db by removing all fields which begin with
4030: 'pre_' or 'store'.
4031:
4032: =cut
4033:
4034: ######################################################################
4035: ######################################################################
4036: sub start_fresh_session {
4037: delete $groupsearch_db{'mode_catalog'};
4038: foreach (keys(%groupsearch_db)) {
4039: if ($_ =~ /^pre_/) {
4040: delete $groupsearch_db{$_};
4041: }
4042: if ($_ =~ /^store/) {
4043: delete $groupsearch_db{$_};
4044: }
4045: }
4046: }
4047:
4048: 1;
4049:
4050: sub cleanup {
4051: if (tied(%groupsearch_db)) {
4052: unless (untie(%groupsearch_db)) {
4053: &Apache::lonnet::logthis('Failed cleanup searchcat: groupsearch_db');
4054: }
4055: }
4056: &Apache::lonmysql::disconnect_from_db();
4057: return OK;
4058: }
4059:
4060: __END__
4061:
4062: =pod
4063:
4064: =back
4065:
4066: =cut
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