1: # The LearningOnline Network with CAPA
2: # Search Catalog
3: #
4: # $Id: lonsearchcat.pm,v 1.205 2004/03/08 17:31:37 www 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: =over 4
56:
57: =cut
58:
59: ###############################################################################
60: ###############################################################################
61:
62: package Apache::lonsearchcat;
63:
64: use strict;
65: use Apache::Constants qw(:common :http);
66: use Apache::lonnet();
67: use Apache::File();
68: use CGI qw(:standard);
69: use Text::Query;
70: use GDBM_File;
71: use Apache::loncommon();
72: use Apache::lonmysql();
73: use Apache::lonmeta;
74: use Apache::lonhtmlcommon;
75: use Apache::lonlocal;
76: use LONCAPA::lonmetadata();
77:
78: ######################################################################
79: ######################################################################
80: ##
81: ## Global variables
82: ##
83: ######################################################################
84: ######################################################################
85: my %groupsearch_db; # Database hash used to save values for the
86: # groupsearch RAT interface.
87: my %persistent_db; # gdbm hash which holds data which is supposed to
88: # persist across calls to lonsearchcat.pm
89:
90: # The different view modes and associated functions
91:
92: my %Views = ("detailed" => \&detailed_citation_view,
93: "summary" => \&summary_view,
94: "fielded" => \&fielded_format_view,
95: "xml" => \&xml_sgml_view,
96: "compact" => \&compact_view);
97:
98: ######################################################################
99: ######################################################################
100: sub handler {
101: my $r = shift;
102: # &set_defaults();
103: #
104: # set form defaults
105: #
106: my $hidden_fields;# Hold all the hidden fields used to keep track
107: # of the search system state
108: my $importbutton; # button to take the selected results and go to group
109: # sorting
110: my $diropendb; # The full path to the (temporary) search database file.
111: # This is set and used in &handler() and is also used in
112: # &output_results().
113: my $bodytag; # LON-CAPA standard body tag, gotten from
114: # &Apache::lonnet::bodytag.
115: # No title, no table, just a <body> tag.
116:
117: my $loaderror=&Apache::lonnet::overloaderror($r);
118: if ($loaderror) { return $loaderror; }
119:
120: my $closebutton; # button that closes the search window
121: # This button is different for the RAT compared to
122: # normal invocation.
123: #
124: &Apache::loncommon::content_type($r,'text/html');
125: $r->send_http_header;
126: return OK if $r->header_only;
127: ##
128: ## Prevent caching of the search interface window. Hopefully this means
129: ## we will get the launch=1 passed in a little more.
130: &Apache::loncommon::no_cache($r);
131: ##
132: ## Pick up form fields passed in the links.
133: ##
134: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
135: ['catalogmode','launch','acts','mode','form','element','pause',
136: 'phase','persistent_db_id','table','start','show',
137: 'cleargroupsort','titleelement']);
138: ##
139: ## The following is a trick - we wait a few seconds if asked to so
140: ## the daemon running the search can get ahead of the daemon
141: ## printing the results. We only need (theoretically) to do
142: ## this once, so the pause indicator is deleted
143: ##
144: if (exists($ENV{'form.pause'})) {
145: sleep(1);
146: delete($ENV{'form.pause'});
147: }
148: ##
149: ## Initialize global variables
150: ##
151: my $domain = $r->dir_config('lonDefDomain');
152: $diropendb= "/home/httpd/perl/tmp/$ENV{'user.domain'}_$ENV{'user.name'}_searchcat.db";
153: #
154: # set the name of the persistent database
155: # $ENV{'form.persistent_db_id'} can only have digits in it.
156: if (! exists($ENV{'form.persistent_db_id'}) ||
157: ($ENV{'form.persistent_db_id'} =~ /\D/) ||
158: ($ENV{'form.launch'} eq '1')) {
159: $ENV{'form.persistent_db_id'} = time;
160: }
161: $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
162: my $persistent_db_file = "/home/httpd/perl/tmp/".
163: &Apache::lonnet::escape($domain).
164: '_'.&Apache::lonnet::escape($ENV{'user.name'}).
165: '_'.$ENV{'form.persistent_db_id'}.'_persistent_search.db';
166: ##
167: if (! &get_persistent_form_data($persistent_db_file)) {
168: if ($ENV{'form.phase'} =~ /(run_search|results)/) {
169: &Apache::lonnet::logthis("lonsearchcat:Unable to recover data ".
170: "from $persistent_db_file");
171: $r->print(<<END);
172: <html>
173: <head><title>LON-CAPA Search Error</title></head>
174: $bodytag
175: We were unable to retrieve data describing your search. This is a serious
176: error and has been logged. Please alert your LON-CAPA administrator.
177: </body>
178: </html>
179: END
180: return OK;
181: }
182: }
183: ##
184: ## Clear out old values from groupsearch database
185: ##
186: untie %groupsearch_db if (tied(%groupsearch_db));
187: if (($ENV{'form.cleargroupsort'} eq '1') ||
188: (($ENV{'form.launch'} eq '1') &&
189: ($ENV{'form.catalogmode'} eq 'groupsearch'))) {
190: if (tie(%groupsearch_db,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
191: &start_fresh_session();
192: untie %groupsearch_db;
193: delete($ENV{'form.cleargroupsort'});
194: } else {
195: # This is a stupid error to give to the user.
196: # It really tells them nothing.
197: $r->print('<html><head></head>'.$bodytag.
198: 'Unable to tie hash to db file</body></html>');
199: return OK;
200: }
201: }
202: ##
203: ## Configure hidden fields
204: ##
205: $hidden_fields = '<input type="hidden" name="persistent_db_id" value="'.
206: $ENV{'form.persistent_db_id'}.'" />'."\n";
207: if (exists($ENV{'form.catalogmode'})) {
208: $hidden_fields .= '<input type="hidden" name="catalogmode" value="'.
209: $ENV{'form.catalogmode'}.'" />'."\n";
210: }
211: if (exists($ENV{'form.form'})) {
212: $hidden_fields .= '<input type="hidden" name="form" value="'.
213: $ENV{'form.form'}.'" />'."\n";
214: }
215: if (exists($ENV{'form.element'})) {
216: $hidden_fields .= '<input type="hidden" name="element" value="'.
217: $ENV{'form.element'}.'" />'."\n";
218: }
219: if (exists($ENV{'form.titleelement'})) {
220: $hidden_fields .= '<input type="hidden" name="titleelement" value="'.
221: $ENV{'form.titleelement'}.'" />'."\n";
222: }
223: if (exists($ENV{'form.mode'})) {
224: $hidden_fields .= '<input type="hidden" name="mode" value="'.
225: $ENV{'form.mode'}.'" />'."\n";
226: }
227: ##
228: ## Configure dynamic components of interface
229: ##
230: if ($ENV{'form.catalogmode'} eq 'interactive') {
231: $closebutton="<input type='button' name='close' value='CLOSE' ";
232: if ($ENV{'form.phase'} =~ /(results|run_search)/) {
233: $closebutton .="onClick='parent.close()'";
234: } else {
235: $closebutton .="onClick='self.close()'";
236: }
237: $closebutton .=">\n";
238: } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
239: $closebutton="<input type='button' name='close' value='CLOSE' ";
240: if ($ENV{'form.phase'} =~ /(results|run_search)/) {
241: $closebutton .="onClick='parent.close()'";
242: } else {
243: $closebutton .="onClick='self.close()'";
244: }
245: $closebutton .= ">";
246: $importbutton=<<END;
247: <input type='button' name='import' value='IMPORT'
248: onClick='javascript:select_group()'>
249: END
250: } else {
251: $closebutton = '';
252: $importbutton = '';
253: }
254: ##
255: ## Sanity checks on form elements
256: ##
257: if (!defined($ENV{'form.viewselect'})) {
258: if (($ENV{'form.catalogmode'} eq 'groupsearch') ||
259: ($ENV{'form.catalogmode'} eq 'interactive')) {
260: $ENV{'form.viewselect'} ="Compact View";
261: } else {
262: $ENV{'form.viewselect'} ="Detailed Citation View";
263: }
264: }
265: $ENV{'form.phase'} = 'disp_basic' if (! exists($ENV{'form.phase'}));
266: $ENV{'form.show'} = 20 if (! exists($ENV{'form.show'}));
267: ##
268: ## Switch on the phase
269: ##
270: if ($ENV{'form.phase'} eq 'disp_basic') {
271: &print_basic_search_form($r,$closebutton,$hidden_fields);
272: } elsif ($ENV{'form.phase'} eq 'disp_adv') {
273: &print_advanced_search_form($r,$closebutton,$hidden_fields);
274: } elsif ($ENV{'form.phase'} eq 'results') {
275: &display_results($r,$importbutton,$closebutton,$diropendb);
276: } elsif ($ENV{'form.phase'} =~ /^(sort|run_search)$/) {
277: my ($query,$customquery,$customshow,$libraries,$pretty_string) =
278: &get_persistent_data($persistent_db_file,
279: ['query','customquery','customshow',
280: 'libraries','pretty_string']);
281: if ($ENV{'form.phase'} eq 'sort') {
282: &print_sort_form($r,$pretty_string);
283: } elsif ($ENV{'form.phase'} eq 'run_search') {
284: &run_search($r,$query,$customquery,$customshow,
285: $libraries,$pretty_string);
286: }
287: } elsif ($ENV{'form.phase'} eq 'course_search') {
288: &course_search($r);
289: } elsif(($ENV{'form.phase'} eq 'basic_search') ||
290: ($ENV{'form.phase'} eq 'adv_search')) {
291: $ENV{'form.searchmode'} = 'basic';
292: if ($ENV{'form.phase'} eq 'adv_search') {
293: $ENV{'form.searchmode'} = 'advanced';
294: }
295: # Set up table
296: if (! defined(&create_results_table())) {
297: my $errorstring=&Apache::lonmysql::get_error();
298: $r->print(<<END);
299: <html><head><title>Search Error</title></head>
300: $bodytag
301: Unable to create table in which to store search results.
302: The search has been aborted.
303: <br />$errorstring
304: </body>
305: </html>
306: END
307: return OK;
308: }
309: delete($ENV{'form.launch'});
310: if (! &make_form_data_persistent($r,$persistent_db_file)) {
311: $r->print(<<END);
312: <html><head><title>Search Error</title></head>
313: $bodytag
314: Unable to properly store search information. The search has been aborted.
315: </body>
316: </html>
317: END
318: return OK;
319: }
320: #
321: # We are running a search
322: my ($query,$customquery,$customshow,$libraries) =
323: (undef,undef,undef,undef);
324: my $pretty_string;
325: if ($ENV{'form.phase'} eq 'basic_search') {
326: ($query,$pretty_string,$libraries) =
327: &parse_basic_search($r,$closebutton,$hidden_fields);
328: } else { # Advanced search
329: ($query,$customquery,$customshow,$libraries,$pretty_string)
330: = &parse_advanced_search($r,$closebutton,$hidden_fields);
331: return OK if (! defined($query));
332: }
333: &make_persistent({ query => $query,
334: customquery => $customquery,
335: customshow => $customshow,
336: libraries => $libraries,
337: pretty_string => $pretty_string },
338: $persistent_db_file);
339: ##
340: ## Print out the frames interface
341: ##
342: &print_frames_interface($r);
343: }
344: return OK;
345: }
346:
347: ######################################################################
348: ######################################################################
349: ##
350: ## Course Search
351: ##
352: ######################################################################
353: ######################################################################
354: { # Scope the course search to avoid global variables
355: #
356: # Variables For course search
357: my %alreadyseen;
358: my %hash;
359: my $totalfound;
360:
361: sub course_search {
362: my $r=shift;
363: my $bodytag=&Apache::loncommon::bodytag('Course Search').
364: &Apache::loncommon::help_open_bug('Searching');
365: my $pretty_search_string = '<b>'.$ENV{'form.courseexp'}.'</b>';
366: my $search_string = $ENV{'form.courseexp'};
367: my @New_Words;
368: if ($ENV{'form.crsrelated'}) {
369: ($search_string,@New_Words) = &related_version($ENV{'form.courseexp'});
370: if (@New_Words) {
371: $pretty_search_string .= ' '.&mt("with related words").": <b>@New_Words</b>.";
372: } else {
373: $pretty_search_string .= ' '.&mt('with no related words').".";
374: }
375: }
376: my $fulltext=$ENV{'form.crsfulltext'};
377: my @allwords=($search_string,@New_Words);
378: $totalfound=0;
379: $r->print('<html><head><title>LON-CAPA Course Search</title></head>'.
380: $bodytag.'<hr /><center><font size="+2" face="arial">'.$pretty_search_string.'</font></center><hr />');
381: $r->rflush();
382: # ======================================================= Go through the course
383: undef %alreadyseen;
384: %alreadyseen=();
385: my $c=$r->connection;
386: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.".db",
387: &GDBM_READER(),0640)) {
388: foreach (keys %hash) {
389: if ($c->aborted()) { last; }
390: if (($_=~/^src\_(.+)$/) && (!$alreadyseen{$hash{$_}})) {
391: &checkonthis($r,$hash{$_},0,$hash{'title_'.$1},$fulltext,
392: @allwords);
393: }
394: }
395: untie(%hash);
396: }
397: unless ($totalfound) {
398: $r->print('<p>'.&mt('No resources found').'.</p>');
399: }
400: # =================================================== Done going through course
401: $r->print('</body></html>');
402: }
403:
404: # =============================== This pulls up a resource and its dependencies
405:
406: sub checkonthis {
407: my ($r,$url,$level,$title,$fulltext,@allwords)=@_;
408: $alreadyseen{$url}=1;
409: $r->rflush();
410: my $result=&Apache::lonnet::metadata($url,'title').' '.
411: &Apache::lonnet::metadata($url,'subject').' '.
412: &Apache::lonnet::metadata($url,'abstract').' '.
413: &Apache::lonnet::metadata($url,'keywords');
414: if (($url) && ($fulltext)) {
415: $result.=&Apache::lonnet::ssi_body($url);
416: }
417: $result=~s/\s+/ /gs;
418: my $applies=0;
419: foreach (@allwords) {
420: if ($_=~/\w/) {
421: if ($result=~/$_/si) {
422: $applies++;
423: }
424: }
425: }
426: # Does this resource apply?
427: if ($applies) {
428: $r->print('<br />');
429: for (my $i=0;$i<=$level*5;$i++) {
430: $r->print(' ');
431: }
432: $r->print('<a href="'.$url.'" target="cat">'.
433: ($title?$title:$url).'</a><br />');
434: $totalfound++;
435: } elsif ($fulltext) {
436: $r->print(' .');
437: }
438: $r->rflush();
439: # Check also the dependencies of this one
440: my $dependencies=
441: &Apache::lonnet::metadata($url,'dependencies');
442: foreach (split(/\,/,$dependencies)) {
443: if (($_=~/^\/res\//) && (!$alreadyseen{$_})) {
444: &checkonthis($r,$_,$level+1,'',$fulltext,@allwords);
445: }
446: }
447: }
448:
449: sub untiehash {
450: if (tied(%hash)) {
451: untie(%hash);
452: }
453: }
454:
455: } # End of course search scoping
456:
457: ######################################################################
458: ######################################################################
459:
460: =pod
461:
462: =item &print_basic_search_form()
463:
464: Prints the form for the basic search. Sorry the name is so cryptic.
465:
466: =cut
467:
468: ######################################################################
469: ######################################################################
470: sub print_basic_search_form {
471: my ($r,$closebutton,$hidden_fields) = @_;
472: my $bodytag=&Apache::loncommon::bodytag('Search').
473: &Apache::loncommon::help_open_topic('Finding_Resources').
474: &Apache::loncommon::help_open_bug('Searching');
475: my $scrout=<<"ENDDOCUMENT";
476: <html>
477: <head>
478: <title>The LearningOnline Network with CAPA</title>
479: <script type="text/javascript">
480: function openhelp(val) {
481: openhelpwin=open('/adm/help/searchcat.html','helpscreen',
482: 'scrollbars=1,width=600,height=300');
483: openhelpwin.focus();
484: }
485: </script>
486: </head>
487: $bodytag
488: ENDDOCUMENT
489: if (&Apache::lonnet::allowed('bre',$ENV{'request.role.domain'})) {
490: my $CatalogSearch=&mt('Catalog Search');
491: my $Statement=&searchhelp();
492: $scrout.=(<<ENDDOCUMENT);
493: <h1>$CatalogSearch</h1>
494: <form name="loncapa_search" method="post" action="/adm/searchcat">
495: <input type="hidden" name="phase" value="basic_search" />
496: $hidden_fields
497: <p>
498: $Statement.
499: </p>
500: <p>
501: <table>
502: <tr><td>
503: ENDDOCUMENT
504: $scrout.=' '.&Apache::lonhtmlcommon::textbox('basicexp',
505: $ENV{'form.basicexp'},40).
506: ' ';
507: my $relatedcheckbox = &Apache::lonhtmlcommon::checkbox('related',
508: $ENV{'form.related'});
509: my $domain = $r->dir_config('lonDefDomain');
510: my $domaincheckbox = &Apache::lonhtmlcommon::checkbox('domains',
511: $ENV{'form.domains'});
512: my $srch=&mt('Search');
513: my $header=&mt('Advanced Search');
514: my $userelatedwords=&mt('use related words');
515: my $onlysearchdomain=&mt('only search domain');
516: my $view=&viewoptions();
517: $scrout.=<<END;
518: </td><td><a
519: href="/adm/searchcat?phase=disp_adv&catalogmode=$ENV{'form.catalogmode'}&launch=$ENV{'form.launch'}&mode=$ENV{'form.mode'}"
520: >$header</a></td></tr>
521: <tr><td>$relatedcheckbox $userelatedwords</td>
522: <td>$domaincheckbox $onlysearchdomain <b>$domain</b></td></tr>
523: </table>
524: </p>
525: $view
526: <p>
527: <input type="submit" name="basicsubmit" value='$srch' />
528: $closebutton
529: END
530: $scrout.=<<ENDDOCUMENT;
531: </p>
532: </form>
533: ENDDOCUMENT
534: }
535: if ($ENV{'request.course.id'}) {
536: my %lt=&Apache::lonlocal::texthash(
537: 'srch' => 'Search',
538: 'header' => 'Course Search',
539: 'note' => 'Enter terms or phrases, then press "Search" below',
540: 'use' => 'use related words',
541: 'full' =>'fulltext search (time consuming)'
542: );
543: $scrout.=(<<ENDCOURSESEARCH);
544: <hr />
545: <h1>$lt{'header'}</h1>
546: <form name="course_search" method="post" action="/adm/searchcat">
547: <input type="hidden" name="phase" value="course_search" />
548: $hidden_fields
549: <p>
550: $lt{'note'}.
551: </p>
552: <p>
553: <table>
554: <tr><td>
555: ENDCOURSESEARCH
556: $scrout.=' '.
557: &Apache::lonhtmlcommon::textbox('courseexp',
558: $ENV{'form.courseexp'},40);
559: my $crscheckbox =
560: &Apache::lonhtmlcommon::checkbox('crsfulltext',
561: $ENV{'form.crsfulltext'});
562: my $relcheckbox =
563: &Apache::lonhtmlcommon::checkbox('crsrelated',
564: $ENV{'form.crsrelated'});
565: $scrout.=(<<ENDENDCOURSE);
566: </td></tr>
567: <tr><td>$relcheckbox $lt{'use'}</td><td></td></tr>
568: <tr><td>$crscheckbox $lt{'full'}</td><td></td></tr>
569: </table><p>
570: <input type="submit" name="coursesubmit" value='$lt{'srch'}' />
571: </p>
572: ENDENDCOURSE
573: }
574: $scrout.=(<<ENDDOCUMENT);
575: </body>
576: </html>
577: ENDDOCUMENT
578: $r->print($scrout);
579: return;
580: }
581: ######################################################################
582: ######################################################################
583:
584: =pod
585:
586: =item &advanced_search_form()
587:
588: Prints the advanced search form.
589:
590: =cut
591:
592: ######################################################################
593: ######################################################################
594: sub print_advanced_search_form{
595: my ($r,$closebutton,$hidden_fields) = @_;
596: my %lt=&Apache::lonlocal::texthash('srch' => 'Search',
597: 'reset' => 'Reset',
598: 'help' => 'Help');
599: my $advanced_buttons = <<"END";
600: <p>
601: <input type="submit" name="advancedsubmit" value='$lt{"srch"}' />
602: <input type="reset" name="reset" value='$lt{"reset"}' />
603: $closebutton
604: <input type="button" value="$lt{'help'}" onClick="openhelp()" />
605: </p>
606: END
607: my $bodytag=&Apache::loncommon::bodytag('Advanced Catalog Search');
608: my $searchhelp=&searchhelp();
609: my $scrout=<<"ENDHEADER";
610: <html>
611: <head>
612: <title>The LearningOnline Network with CAPA</title>
613: <script type="text/javascript">
614: function openhelp(val) {
615: openhelpwin=open('/adm/help/searchcat.html','helpscreen',
616: 'scrollbars=1,width=600,height=300');
617: openhelpwin.focus();
618: }
619: </script>
620: </head>
621: $bodytag
622: $searchhelp
623: <form method="post" action="/adm/searchcat" name="advsearch">
624: $advanced_buttons
625: $hidden_fields
626: <input type="hidden" name="phase" value="adv_search" />
627: ENDHEADER
628: $scrout.=&viewoptions();
629: my %fields=&Apache::lonmeta::fieldnames();
630:
631: $scrout.='<table>';
632: $scrout.="<tr><th>".&mt('Field').'</th><th>'.&mt('Value').'</th><th>'
633: .&mt('Related').'<br />'.&mt('Words')."</td></tr>\n";
634: foreach ('title','author','owner','authorspace','modifyinguser',
635: 'keywords','notes','abstract','standards',
636: 'lowestgradelevel','highestgradelevel','mime') {
637: $scrout.='<tr bgcolor="#FFFFBB"><td>'.&titlefield($fields{$_}).'</td><td>'.
638: &Apache::lonmeta::prettyinput($_,$ENV{'form.'.$_},$_,'advsearch',
639: 1,'</td><td>',$ENV{'form.'.$_.'_related'}).
640: '</td></tr>';
641: }
642: $scrout.='<tr bgcolor="#FFFFBB"><td>'.
643: &titlefield(&mt('MIME Type Category')).'</td><td>'.
644: &Apache::loncommon::filecategoryselect('category',
645: $ENV{'form.category'}).
646: '</td><td> </td></td></tr>';
647: $scrout.='<tr bgcolor="#FFFFBB"><td>'.
648: &titlefield(&mt('Limit Search to Domains')).'</td><td>'.
649: &Apache::loncommon::domain_select('domains',
650: $ENV{'form.domains'},1).
651: '</td><td> </td></td></tr>';
652: my %dates=&Apache::lonlocal::texthash
653: ('creationdatestart' => 'Creation Date After',
654: 'creationdateend' => 'Creation Date Before',
655: 'lastrevisiondatestart' => 'Last Revision Date After',
656: 'lastrevisiondateend' => 'Last Revision Date Before');
657: foreach (sort keys %dates) {
658: $scrout.='<tr bgcolor="#FFFFBB">'.
659: '<td>'.&titlefield($dates{$_}).'</td><td>'.
660: &Apache::lonhtmlcommon::date_setter('advsearch',$_,0,'',1).
661: '</td><td> </td></td>'.
662: '</tr>';
663: }
664:
665: $scrout.="</table>\n";
666: $scrout.=<<ENDDOCUMENT;
667: $advanced_buttons
668: </form>
669: </body>
670: </html>
671: ENDDOCUMENT
672: $r->print($scrout);
673: return;
674: }
675:
676: ######################################################################
677: ######################################################################
678:
679: =pod
680:
681: =item &titlefield()
682:
683: Inputs: title text
684:
685: Outputs: titletext with font wrapper
686:
687: =cut
688:
689: ######################################################################
690: ######################################################################
691: sub titlefield {
692: my $title=shift;
693: return '<font face="arial" color="#800000">'.$title.'</font>';
694: }
695:
696: ######################################################################
697: ######################################################################
698:
699: =pod
700:
701: =item viewoptiontext()
702:
703: Inputs: codename for view option
704:
705: Outputs: displayed text
706:
707: =cut
708:
709: ######################################################################
710: ######################################################################
711: sub viewoptiontext {
712: my $code=shift;
713: my %desc=&Apache::lonlocal::texthash
714: ('detailed' => "Detailed Citation View",
715: 'xml' => 'XML/SGML',
716: 'compact' => 'Compact View',
717: 'fielded' => 'Fielded Format',
718: 'summary' => 'Summary View');
719: return $desc{$code};
720: }
721:
722: ######################################################################
723: ######################################################################
724:
725: =pod
726:
727: =item viewoptions()
728:
729: Inputs: none
730:
731: Outputs: text for box with view options
732:
733: =cut
734:
735: ######################################################################
736: ######################################################################
737: sub viewoptions {
738: my $scrout="\n\n".'<table bgcolor="#FFFFBB">'.
739: '<tr><th>'.&mt('View Options').'</th><th>'.
740: &mt('Records per Page').'</th></tr><tr><td>';
741: unless ($ENV{'form.viewselect'}) { $ENV{'form.viewselect'}='detailed'; }
742: $scrout.=&Apache::lonmeta::selectbox('viewselect',
743: $ENV{'form.viewselect'},
744: \&viewoptiontext,
745: sort(keys(%Views)));
746: $scrout.='</td><td>';
747: $scrout.=&Apache::lonmeta::selectbox('show',
748: $ENV{'form.show'},
749: undef,
750: (10,20,50,100,1000,10000));
751: $scrout.="</td></tr></table>\n\n";
752: return $scrout;
753: }
754:
755: ######################################################################
756: ######################################################################
757:
758: =pod
759:
760: =item searchhelp()
761:
762: Inputs: none
763:
764: Outputs: return little blurb on how to enter searches
765:
766: =cut
767:
768: ######################################################################
769: ######################################################################
770: sub searchhelp {
771: return &mt('Enter terms or phrases separated by AND, OR, or NOT');
772: }
773:
774: ######################################################################
775: ######################################################################
776:
777: =pod
778:
779: =item &get_persistent_form_data()
780:
781: Inputs: filename of database
782:
783: Outputs: returns undef on database errors.
784:
785: This function is the reverse of &make_persistent() for form data.
786: Retrieve persistent data from %persistent_db. Retrieved items will have their
787: values unescaped. If a form value already exists in $ENV, it will not be
788: overwritten. Form values that are array references may have values appended
789: to them.
790:
791: =cut
792:
793: ######################################################################
794: ######################################################################
795: sub get_persistent_form_data {
796: my $filename = shift;
797: return 0 if (! -e $filename);
798: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
799: &GDBM_READER(),0640));
800: #
801: # These make sure we do not get array references printed out as 'values'.
802: my %arrays_allowed = ('form.domains'=>1);
803: #
804: # Loop through the keys, looking for 'form.'
805: foreach my $name (keys(%persistent_db)) {
806: next if ($name !~ /^form./);
807: # Kludgification begins!
808: if ($name eq 'form.domains' &&
809: $ENV{'form.searchmode'} eq 'basic' &&
810: $ENV{'form.phase'} ne 'disp_basic') {
811: next;
812: }
813: # End kludge (hopefully)
814: next if (exists($ENV{$name}));
815: my @values = map {
816: &Apache::lonnet::unescape($_);
817: } split(',',$persistent_db{$name});
818: next if (@values <1);
819: if ($arrays_allowed{$name}) {
820: $ENV{$name} = [@values];
821: } else {
822: $ENV{$name} = $values[0] if ($values[0]);
823: }
824: }
825: untie (%persistent_db);
826: return 1;
827: }
828:
829: ######################################################################
830: ######################################################################
831:
832: =pod
833:
834: =item &get_persistent_data()
835:
836: Inputs: filename of database, ref to array of values to recover.
837:
838: Outputs: array of values. Returns undef on error.
839:
840: This function is the reverse of &make_persistent();
841: Retrieve persistent data from %persistent_db. Retrieved items will have their
842: values unescaped. If the item contains commas (before unescaping), the
843: returned value will be an array pointer.
844:
845: =cut
846:
847: ######################################################################
848: ######################################################################
849: sub get_persistent_data {
850: my $filename = shift;
851: my @Vars = @{shift()};
852: my @Values; # Return array
853: return undef if (! -e $filename);
854: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
855: &GDBM_READER(),0640));
856: foreach my $name (@Vars) {
857: if (! exists($persistent_db{$name})) {
858: push @Values, undef;
859: next;
860: }
861: my @values = map {
862: &Apache::lonnet::unescape($_);
863: } split(',',$persistent_db{$name});
864: if (@values <= 1) {
865: push @Values,$values[0];
866: } else {
867: push @Values,\@values;
868: }
869: }
870: untie (%persistent_db);
871: return @Values;
872: }
873:
874: ######################################################################
875: ######################################################################
876:
877: =pod
878:
879: =item &make_persistent()
880:
881: Inputs: Hash of values to save, filename of persistent database.
882:
883: Store variables away to the %persistent_db.
884: Values will be escaped. Values that are array pointers will have their
885: elements escaped and concatenated in a comma separated string.
886:
887: =cut
888:
889: ######################################################################
890: ######################################################################
891: sub make_persistent {
892: my %save = %{shift()};
893: my $filename = shift;
894: return undef if (! tie(%persistent_db,'GDBM_File',
895: $filename,&GDBM_WRCREAT(),0640));
896: foreach my $name (keys(%save)) {
897: my @values = (ref($save{$name}) ? @{$save{$name}} : ($save{$name}));
898: # We handle array references, but not recursively.
899: my $store = join(',', map { &Apache::lonnet::escape($_); } @values );
900: $persistent_db{$name} = $store;
901: }
902: untie(%persistent_db);
903: return 1;
904: }
905:
906: ######################################################################
907: ######################################################################
908:
909: =pod
910:
911: =item &make_form_data_persistent()
912:
913: Inputs: filename of persistent database.
914:
915: Store most form variables away to the %persistent_db.
916: Values will be escaped. Values that are array pointers will have their
917: elements escaped and concatenated in a comma separated string.
918:
919: =cut
920:
921: ######################################################################
922: ######################################################################
923: sub make_form_data_persistent {
924: my $r = shift;
925: my $filename = shift;
926: my %save;
927: foreach (keys(%ENV)) {
928: next if (!/^form/ || /submit/);
929: $save{$_} = $ENV{$_};
930: }
931: return &make_persistent(\%save,$filename);
932: }
933:
934: ######################################################################
935: ######################################################################
936:
937: =pod
938:
939: =item &parse_advanced_search()
940:
941: Parse advanced search form and return the following:
942:
943: =over 4
944:
945: =item $query Scalar containing an SQL query.
946:
947: =item $customquery Scalar containing a custom query.
948:
949: =item $customshow Scalar containing commands to show custom metadata.
950:
951: =item $libraries_to_query Reference to array of domains to search.
952:
953: =back
954:
955: =cut
956:
957: ######################################################################
958: ######################################################################
959: sub parse_advanced_search {
960: my ($r,$closebutton,$hidden_fields)=@_;
961: my $fillflag=0;
962: my $pretty_search_string = "<br />\n";
963: # Clean up fields for safety
964: for my $field ('title','author','subject','keywords','url','version',
965: 'creationdatestart_month','creationdatestart_day',
966: 'creationdatestart_year','creationdateend_month',
967: 'creationdateend_day','creationdateend_year',
968: 'lastrevisiondatestart_month','lastrevisiondatestart_day',
969: 'lastrevisiondatestart_year','lastrevisiondateend_month',
970: 'lastrevisiondateend_day','lastrevisiondateend_year',
971: 'notes','abstract','extension','language','owner',
972: 'custommetadata','customshow','category') {
973: $ENV{"form.$field"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
974: }
975: foreach ('mode','form','element') {
976: # is this required? Hmmm.
977: next unless (exists($ENV{"form.$_"}));
978: $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
979: $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
980: }
981: # Preprocess the category form element.
982: $ENV{'form.category'} = 'any' if (! defined($ENV{'form.category'}) ||
983: ref($ENV{'form.category'}));
984: #
985: # Check to see if enough information was filled in
986: for my $field ('title','author','subject','keywords','url','version',
987: 'notes','abstract','category','extension','language',
988: 'owner','custommetadata') {
989: if (&filled($ENV{"form.$field"})) {
990: $fillflag++;
991: }
992: }
993: unless ($fillflag) {
994: &output_blank_field_error($r,$closebutton,
995: 'phase=disp_adv',$hidden_fields);
996: return ;
997: }
998: # Turn the form input into a SQL-based query
999: my $query='';
1000: my @queries;
1001: my $font = '<font color="#800000" face="helvetica">';
1002: # Evaluate logical expression AND/OR/NOT phrase fields.
1003: foreach my $field ('title','author','subject','notes','abstract','url',
1004: 'keywords','version','owner','standards') {
1005: if ($ENV{'form.'.$field}) {
1006: my $searchphrase = $ENV{'form.'.$field};
1007: $pretty_search_string .= $font."$field</font> contains <b>".
1008: $searchphrase."</b>";
1009: if ($ENV{'form.'.$field.'_related'}) {
1010: my @New_Words;
1011: ($searchphrase,@New_Words) = &related_version($searchphrase);
1012: if (@New_Words) {
1013: $pretty_search_string .= " with related words: ".
1014: "<b>@New_Words</b>.";
1015: } else {
1016: $pretty_search_string .= " with no related words.";
1017: }
1018: }
1019: $pretty_search_string .= "<br />\n";
1020: push @queries,&build_SQL_query($field,$searchphrase);
1021: }
1022: }
1023: #
1024: # Make the 'mime' from 'form.category' and 'form.extension'
1025: #
1026: my $searchphrase;
1027: if (exists($ENV{'form.category'}) &&
1028: $ENV{'form.category'} !~ /^\s*$/ &&
1029: $ENV{'form.category'} ne 'any') {
1030: my @extensions = &Apache::loncommon::filecategorytypes
1031: ($ENV{'form.category'});
1032: if (scalar(@extensions) > 0) {
1033: $searchphrase = join(' OR ',@extensions);
1034: }
1035: }
1036: if (exists($ENV{'form.extension'}) && $ENV{'form.extension'} !~ /^\s*$/) {
1037: $searchphrase .= ' OR ' if (defined($searchphrase));
1038: my @extensions = split(/,/,$ENV{'form.extension'});
1039: $searchphrase .= join(' OR ',@extensions);
1040: }
1041: if (defined($searchphrase)) {
1042: push @queries,&build_SQL_query('mime',$searchphrase);
1043: $pretty_search_string .=$font.'mime</font> contains <b>'.
1044: $searchphrase.'</b><br />';
1045: }
1046: #
1047: # Evaluate option lists
1048: if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
1049: push @queries,"(language like \"$ENV{'form.language'}\")";
1050: $pretty_search_string.=$font."language</font>= ".
1051: &Apache::loncommon::languagedescription($ENV{'form.language'}).
1052: "<br />\n";
1053: }
1054: if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
1055: push @queries,"(copyright like \"$ENV{'form.copyright'}\")";
1056: $pretty_search_string.=$font."copyright</font> = ".
1057: &Apache::loncommon::copyrightdescription($ENV{'form.copyright'}).
1058: "<br \>\n";
1059: }
1060: #
1061: # Evaluate date windows
1062: my $datequery=&build_date_queries(
1063: $ENV{'form.creationdatestart_month'},
1064: $ENV{'form.creationdatestart_day'},
1065: $ENV{'form.creationdatestart_year'},
1066: $ENV{'form.creationdateend_month'},
1067: $ENV{'form.creationdateend_day'},
1068: $ENV{'form.creationdateend_year'},
1069: $ENV{'form.lastrevisiondatestart_month'},
1070: $ENV{'form.lastrevisiondatestart_day'},
1071: $ENV{'form.lastrevisiondatestart_year'},
1072: $ENV{'form.lastrevisiondateend_month'},
1073: $ENV{'form.lastrevisiondateend_day'},
1074: $ENV{'form.lastrevisiondateend_year'},
1075: );
1076: # Test to see if date windows are legitimate
1077: if ($datequery=~/^Incorrect/) {
1078: &output_date_error($r,$datequery,$closebutton,$hidden_fields);
1079: return ;
1080: } elsif ($datequery) {
1081: # Here is where you would set up pretty_search_string to output
1082: # date query information.
1083: push @queries,$datequery;
1084: }
1085: #
1086: # Process form information for custom metadata querying
1087: my $customquery=undef;
1088: ##
1089: ## The custom metadata search was removed q long time ago mostly
1090: ## because I was unable to figureout exactly how it worked and could
1091: ## not imagine people actually using it. MH
1092: ##
1093: # if ($ENV{'form.custommetadata'}) {
1094: # $pretty_search_string .=$font."Custom Metadata Search</font>: <b>".
1095: # $ENV{'form.custommetadata'}."</b><br />\n";
1096: # $customquery=&build_custommetadata_query('custommetadata',
1097: # $ENV{'form.custommetadata'});
1098: # }
1099: my $customshow=undef;
1100: # if ($ENV{'form.customshow'}) {
1101: # $pretty_search_string .=$font."Custom Metadata Display</font>: <b>".
1102: # $ENV{'form.customshow'}."</b><br />\n";
1103: # $customshow=$ENV{'form.customshow'};
1104: # $customshow=~s/[^\w\s]//g;
1105: # my @fields=split(/\s+/,$customshow);
1106: # $customshow=join(" ",@fields);
1107: # }
1108: ##
1109: ## Deal with restrictions to given domains
1110: ##
1111: my ($libraries_to_query,$pretty_domains_string) =
1112: &parse_domain_restrictions();
1113: $pretty_search_string .= $pretty_domains_string."<br />\n";
1114: #
1115: if (@queries) {
1116: $query=join(" AND ",@queries);
1117: $query="select * from metadata where $query";
1118: } elsif ($customquery) {
1119: $query = '';
1120: }
1121: return ($query,$customquery,$customshow,$libraries_to_query,
1122: $pretty_search_string);
1123: }
1124:
1125: sub parse_domain_restrictions {
1126: my $libraries_to_query = undef;
1127: # $ENV{'form.domains'} can be either a scalar or an array reference.
1128: # We need an array.
1129: if (! exists($ENV{'form.domains'})) {
1130: return (undef,'');
1131: }
1132: my @allowed_domains;
1133: if (ref($ENV{'form.domains'})) {
1134: @allowed_domains = @{$ENV{'form.domains'}};
1135: } else {
1136: @allowed_domains = ($ENV{'form.domains'});
1137: }
1138: #
1139: my %domain_hash = ();
1140: my $pretty_domains_string;
1141: foreach (@allowed_domains) {
1142: $domain_hash{$_}++;
1143: }
1144: if ($domain_hash{'any'}) {
1145: $pretty_domains_string = "In all LON-CAPA domains.";
1146: } else {
1147: if (@allowed_domains > 1) {
1148: $pretty_domains_string = "In LON-CAPA domains:";
1149: } else {
1150: $pretty_domains_string = "In LON-CAPA domain ";
1151: }
1152: foreach (sort @allowed_domains) {
1153: $pretty_domains_string .= "<b>".$_."</b> ";
1154: }
1155: foreach (keys(%Apache::lonnet::libserv)) {
1156: if (exists($domain_hash{$Apache::lonnet::hostdom{$_}})) {
1157: push @$libraries_to_query,$_;
1158: }
1159: }
1160: }
1161: return ($libraries_to_query,$pretty_domains_string);
1162: }
1163:
1164: ######################################################################
1165: ######################################################################
1166:
1167: =pod
1168:
1169: =item &parse_basic_search()
1170:
1171: Parse the basic search form and return a scalar containing an sql query.
1172:
1173: =cut
1174:
1175: ######################################################################
1176: ######################################################################
1177: sub parse_basic_search {
1178: my ($r,$closebutton)=@_;
1179: #
1180: # Clean up fields for safety
1181: for my $field ('basicexp') {
1182: $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;
1183: }
1184: foreach ('mode','form','element') {
1185: # is this required? Hmmm.
1186: next unless (exists($ENV{"form.$_"}));
1187: $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
1188: $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1189: }
1190: my ($libraries_to_query,$pretty_domains_string) =
1191: &parse_domain_restrictions();
1192: #
1193: # Check to see if enough of a query is filled in
1194: unless (&filled($ENV{'form.basicexp'})) {
1195: &output_blank_field_error($r,$closebutton,'phase=disp_basic');
1196: return OK;
1197: }
1198: my $pretty_search_string = '<b>'.$ENV{'form.basicexp'}.'</b>';
1199: my $search_string = $ENV{'form.basicexp'};
1200: if ($ENV{'form.related'}) {
1201: my @New_Words;
1202: ($search_string,@New_Words) = &related_version($ENV{'form.basicexp'});
1203: if (@New_Words) {
1204: $pretty_search_string .= " with related words: <b>@New_Words</b>.";
1205: } else {
1206: $pretty_search_string .= " with no related words.";
1207: }
1208: }
1209: #
1210: # Build SQL query string based on form page
1211: my $query='';
1212: my $concatarg=join(',',
1213: ('title', 'author', 'subject', 'notes', 'abstract',
1214: 'keywords'));
1215: $concatarg='title' if $ENV{'form.titleonly'};
1216: $query=&build_SQL_query('concat_ws(" ",'.$concatarg.')',$search_string);
1217: if (defined($pretty_domains_string) && $pretty_domains_string ne '') {
1218: $pretty_search_string .= ' '.$pretty_domains_string;
1219: }
1220: $pretty_search_string .= "<br />\n";
1221: my $final_query = 'SELECT * FROM metadata WHERE '.$query;
1222: # &Apache::lonnet::logthis($final_query);
1223: return ($final_query,$pretty_search_string,
1224: $libraries_to_query);
1225: }
1226:
1227: ######################################################################
1228: ######################################################################
1229:
1230: =pod
1231:
1232: =item &related_version()
1233:
1234: Modifies an input string to include related words. Words in the string
1235: are replaced with parenthesized lists of 'OR'd words. For example
1236: "torque" is replaced with "(torque OR word1 OR word2 OR ...)".
1237:
1238: Note: Using this twice on a string is probably silly.
1239:
1240: =cut
1241:
1242: ######################################################################
1243: ######################################################################
1244: sub related_version {
1245: my $search_string = shift;
1246: my $result = $search_string;
1247: my %New_Words = ();
1248: while ($search_string =~ /(\w+)/cg) {
1249: my $word = $1;
1250: next if (lc($word) =~ /\b(or|and|not)\b/);
1251: my @Words = &Apache::loncommon::get_related_words($word);
1252: @Words = ($#Words>4? @Words[0..4] : @Words);
1253: foreach (@Words) { $New_Words{$_}++;}
1254: my $replacement = join " OR ", ($word,@Words);
1255: $result =~ s/(\b)$word(\b)/$1($replacement)$2/g;
1256: }
1257: return $result,sort(keys(%New_Words));
1258: }
1259:
1260: ######################################################################
1261: ######################################################################
1262:
1263: =pod
1264:
1265: =item &build_SQL_query()
1266:
1267: Builds a SQL query string from a logical expression with AND/OR keywords
1268: using Text::Query and &recursive_SQL_query_builder()
1269:
1270: =cut
1271:
1272: ######################################################################
1273: ######################################################################
1274: sub build_SQL_query {
1275: my ($field_name,$logic_statement)=@_;
1276: my $q=new Text::Query('abc',
1277: -parse => 'Text::Query::ParseAdvanced',
1278: -build => 'Text::Query::Build');
1279: $q->prepare($logic_statement);
1280: my $matchexp=${$q}{'matchexp'}; chomp $matchexp;
1281: my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);
1282: return $sql_query;
1283: }
1284:
1285: ######################################################################
1286: ######################################################################
1287:
1288: =pod
1289:
1290: =item &build_custommetadata_query()
1291:
1292: Constructs a custom metadata query using a rather heinous regular
1293: expression.
1294:
1295: =cut
1296:
1297: ######################################################################
1298: ######################################################################
1299: sub build_custommetadata_query {
1300: my ($field_name,$logic_statement)=@_;
1301: my $q=new Text::Query('abc',
1302: -parse => 'Text::Query::ParseAdvanced',
1303: -build => 'Text::Query::BuildAdvancedString');
1304: $q->prepare($logic_statement);
1305: my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
1306: # quick fix to change literal into xml tag-matching
1307: # will eventually have to write a separate builder module
1308: # wordone=wordtwo becomes\<wordone\>[^\<] *wordtwo[^\<]*\<\/wordone\>
1309: $matchexp =~ s/(\w+)\\=([\w\\\+]+)?# wordone=wordtwo is changed to
1310: /\\<$1\\>?# \<wordone\>
1311: \[\^\\<\]?# [^\<]
1312: \*$2\[\^\\<\]?# *wordtwo[^\<]
1313: \*\\<\\\/$1\\>?# *\<\/wordone\>
1314: /g;
1315: return $matchexp;
1316: }
1317:
1318: ######################################################################
1319: ######################################################################
1320:
1321: =pod
1322:
1323: =item &recursive_SQL_query_build()
1324:
1325: Recursively constructs an SQL query. Takes as input $dkey and $pattern.
1326:
1327: =cut
1328:
1329: ######################################################################
1330: ######################################################################
1331: sub recursive_SQL_query_build {
1332: my ($dkey,$pattern)=@_;
1333: my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
1334: return $pattern unless @matches;
1335: foreach my $match (@matches) {
1336: $match=~/\[ (\w+)\s(.*) \]/;
1337: my ($key,$value)=($1,$2);
1338: my $replacement='';
1339: if ($key eq 'literal') {
1340: $replacement="($dkey LIKE \"\%$value\%\")";
1341: } elsif (lc($key) eq 'not') {
1342: $value=~s/LIKE/NOT LIKE/;
1343: # $replacement="($dkey not like $value)";
1344: $replacement="$value";
1345: } elsif ($key eq 'and') {
1346: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
1347: $replacement="($1 AND $2)";
1348: } elsif ($key eq 'or') {
1349: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
1350: $replacement="($1 OR $2)";
1351: }
1352: substr($pattern,
1353: index($pattern,$match),
1354: length($match),
1355: $replacement);
1356: }
1357: &recursive_SQL_query_build($dkey,$pattern);
1358: }
1359:
1360: ######################################################################
1361: ######################################################################
1362:
1363: =pod
1364:
1365: =item &build_date_queries()
1366:
1367: Builds a SQL logic query to check time/date entries.
1368: Also reports errors (check for /^Incorrect/).
1369:
1370: =cut
1371:
1372: ######################################################################
1373: ######################################################################
1374: sub build_date_queries {
1375: my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,
1376: $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;
1377: my @queries;
1378: if ($cmonth1 or $cday1 or $cyear1 or $cmonth2 or $cday2 or $cyear2) {
1379: unless ($cmonth1 and $cday1 and $cyear1 and
1380: $cmonth2 and $cday2 and $cyear2) {
1381: return "Incorrect entry for the creation date. You must specify ".
1382: "a starting month, day, and year and an ending month, ".
1383: "day, and year.";
1384: }
1385: my $cnumeric1=sprintf("%d%2d%2d",$cyear1,$cmonth1,$cday1);
1386: $cnumeric1+=0;
1387: my $cnumeric2=sprintf("%d%2d%2d",$cyear2,$cmonth2,$cday2);
1388: $cnumeric2+=0;
1389: if ($cnumeric1>$cnumeric2) {
1390: return "Incorrect entry for the creation date. The starting ".
1391: "date must occur before the ending date.";
1392: }
1393: my $cquery="(creationdate BETWEEN '$cyear1-$cmonth1-$cday1' AND '".
1394: "$cyear2-$cmonth2-$cday2 23:59:59')";
1395: push @queries,$cquery;
1396: }
1397: if ($lmonth1 or $lday1 or $lyear1 or $lmonth2 or $lday2 or $lyear2) {
1398: unless ($lmonth1 and $lday1 and $lyear1 and
1399: $lmonth2 and $lday2 and $lyear2) {
1400: return "Incorrect entry for the last revision date. You must ".
1401: "specify a starting month, day, and year and an ending ".
1402: "month, day, and year.";
1403: }
1404: my $lnumeric1=sprintf("%d%2d%2d",$lyear1,$lmonth1,$lday1);
1405: $lnumeric1+=0;
1406: my $lnumeric2=sprintf("%d%2d%2d",$lyear2,$lmonth2,$lday2);
1407: $lnumeric2+=0;
1408: if ($lnumeric1>$lnumeric2) {
1409: return "Incorrect entry for the last revision date. The ".
1410: "starting date must occur before the ending date.";
1411: }
1412: my $lquery="(lastrevisiondate BETWEEN '$lyear1-$lmonth1-$lday1' AND '".
1413: "$lyear2-$lmonth2-$lday2 23:59:59')";
1414: push @queries,$lquery;
1415: }
1416: if (@queries) {
1417: return join(" AND ",@queries);
1418: }
1419: return '';
1420: }
1421:
1422: ######################################################################
1423: ######################################################################
1424:
1425: =pod
1426:
1427: =item ©right_check()
1428:
1429: Inputs: $Metadata, a hash pointer of metadata for a resource.
1430:
1431: Returns: 1 if the resource is available to the user making the query,
1432: 0 otherwise.
1433:
1434: =cut
1435:
1436: ######################################################################
1437: ######################################################################
1438: sub copyright_check {
1439: my $Metadata = shift;
1440: # Check copyright tags and skip results the user cannot use
1441: my (undef,undef,$resdom,$resname) = split('/',
1442: $Metadata->{'url'});
1443: # Check for priv
1444: if (($Metadata->{'copyright'} eq 'priv') &&
1445: (($ENV{'user.name'} ne $resname) &&
1446: ($ENV{'user.domain'} ne $resdom))) {
1447: return 0;
1448: }
1449: # Check for domain
1450: if (($Metadata->{'copyright'} eq 'domain') &&
1451: ($ENV{'user.domain'} ne $resdom)) {
1452: return 0;
1453: }
1454: return 1;
1455: }
1456:
1457: ######################################################################
1458: ######################################################################
1459:
1460: =pod
1461:
1462: =item &ensure_db_and_table()
1463:
1464: Ensure we can get lonmysql to connect to the database and the table we
1465: need exists.
1466:
1467: Inputs: $r, table id
1468:
1469: Returns: undef on error, 1 if the table exists.
1470:
1471: =cut
1472:
1473: ######################################################################
1474: ######################################################################
1475: sub ensure_db_and_table {
1476: my ($r,$table) = @_;
1477: ##
1478: ## Sanity check the table id.
1479: ##
1480: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
1481: $r->print("Unable to retrieve search results. ".
1482: "Unable to determine the table results were stored in. ".
1483: "</body></html>");
1484: return undef;
1485: }
1486: ##
1487: ## Make sure we can connect and the table exists.
1488: ##
1489: my $connection_result = &Apache::lonmysql::connect_to_db();
1490: if (!defined($connection_result)) {
1491: $r->print("Unable to connect to the MySQL database where your results".
1492: " are stored. </body></html>");
1493: &Apache::lonnet::logthis("lonsearchcat: unable to get lonmysql to".
1494: " connect to database.");
1495: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
1496: return undef;
1497: }
1498: my $table_check = &Apache::lonmysql::check_table($table);
1499: if (! defined($table_check)) {
1500: $r->print("A MySQL error has occurred.</form></body></html>");
1501: &Apache::lonnet::logthis("lonmysql was unable to determine the status".
1502: " of table ".$table);
1503: return undef;
1504: } elsif (! $table_check) {
1505: $r->print("The table of results could not be found.");
1506: &Apache::lonnet::logthis("The user requested a table, ".$table.
1507: ", that could not be found.");
1508: return undef;
1509: }
1510: return 1;
1511: }
1512:
1513: ######################################################################
1514: ######################################################################
1515:
1516: =pod
1517:
1518: =item &print_sort_form()
1519:
1520: The sort feature is not implemented at this time. This form just prints
1521: a link to change the search query.
1522:
1523: =cut
1524:
1525: ######################################################################
1526: ######################################################################
1527: sub print_sort_form {
1528: my ($r,$pretty_query_string) = @_;
1529: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1530: ##
1531: my %SortableFields=&Apache::lonlocal::texthash(
1532: id => 'Default',
1533: title => 'Title',
1534: author => 'Author',
1535: subject => 'Subject',
1536: url => 'URL',
1537: version => 'Version Number',
1538: mime => 'Mime type',
1539: lang => 'Language',
1540: owner => 'Owner/Publisher',
1541: copyright => 'Copyright',
1542: hostname => 'Host',
1543: creationdate => 'Creation Date',
1544: lastrevisiondate => 'Revision Date'
1545: );
1546: ##
1547: my $table = $ENV{'form.table'};
1548: return if (! &ensure_db_and_table($r,$table));
1549: ##
1550: ## Get the number of results
1551: ##
1552: my $total_results = &Apache::lonmysql::number_of_rows($table);
1553: if (! defined($total_results)) {
1554: $r->print("A MySQL error has occurred.</form></body></html>");
1555: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
1556: " of rows in table ".$table);
1557: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
1558: return;
1559: }
1560: my $result;
1561: $result.=<<END;
1562: <html>
1563: <head>
1564: <script>
1565: function change_sort() {
1566: var newloc = "/adm/searchcat?phase=results";
1567: newloc += "&persistent_db_id=$ENV{'form.persistent_db_id'}";
1568: newloc += "&sortby=";
1569: newloc += document.forms.statusform.elements.sortby.value;
1570: parent.resultsframe.location= newloc;
1571: }
1572: </script>
1573: <title>Results</title>
1574: </head>
1575: $bodytag
1576: <form name="statusform" action="" method="post">
1577: <input type="hidden" name="Queue" value="" />
1578: END
1579:
1580: #<h2>Sort Results</h2>
1581: #Sort by: <select size="1" name="sortby" onchange="javascript:change_sort();">
1582: # $ENV{'form.sortby'} = 'id' if (! defined($ENV{'form.sortby'}));
1583: # foreach (keys(%SortableFields)) {
1584: # $result.="<option name=\"$_\"";
1585: # if ($_ eq $ENV{'form.sortby'}) {
1586: # $result.=" selected ";
1587: # }
1588: # $result.=" >$SortableFields{$_}</option>\n";
1589: # }
1590: # $result.="</select>\n";
1591: my $revise = &revise_button();
1592: $result.=<<END;
1593: <p>
1594: There are $total_results matches to your query. $revise
1595: </p><p>
1596: Search:$pretty_query_string
1597: </p>
1598: </form>
1599: </body>
1600: </html>
1601: END
1602: $r->print($result);
1603: return;
1604: }
1605:
1606: #####################################################################
1607: #####################################################################
1608:
1609: =pod
1610:
1611: =item MySQL Table Description
1612:
1613: MySQL table creation requires a precise description of the data to be
1614: stored. The use of the correct types to hold data is vital to efficient
1615: storage and quick retrieval of records. The columns must be described in
1616: the following format:
1617:
1618: =cut
1619:
1620: #####################################################################
1621: #####################################################################
1622: #
1623: # These should probably be scoped but I don't have time right now...
1624: #
1625: my @Datatypes;
1626: my @Fullindicies;
1627:
1628: ######################################################################
1629: ######################################################################
1630:
1631: =pod
1632:
1633: =item &create_results_table()
1634:
1635: Creates the table of search results by calling lonmysql. Stores the
1636: table id in $ENV{'form.table'}
1637:
1638: Inputs: none.
1639:
1640: Returns: the identifier of the table on success, undef on error.
1641:
1642: =cut
1643:
1644: ######################################################################
1645: ######################################################################
1646: sub set_up_table_structure {
1647: my ($datatypes,$fullindicies) =
1648: &LONCAPA::lonmetadata::describe_metadata_storage();
1649: unshift(@$datatypes,{name => 'id',
1650: type => 'MEDIUMINT',
1651: restrictions => 'UNSIGNED NOT NULL',
1652: primary_key => 'yes',
1653: auto_inc => 'yes' });
1654: @Datatypes = @{$datatypes};
1655: @Fullindicies = @{$fullindicies};
1656: return;
1657: }
1658:
1659: sub create_results_table {
1660: &set_up_table_structure();
1661: my $table = &Apache::lonmysql::create_table
1662: ( { columns => \@Datatypes,
1663: FULLTEXT => [{'columns' => \@Fullindicies},],
1664: } );
1665: if (defined($table)) {
1666: $ENV{'form.table'} = $table;
1667: return $table;
1668: }
1669: return undef; # Error...
1670: }
1671:
1672: ######################################################################
1673: ######################################################################
1674:
1675: =pod
1676:
1677: =item Search Status update functions
1678:
1679: Each of the following functions changes the values of one of the
1680: input fields used to display the search status to the user. The names
1681: should be explanatory.
1682:
1683: Inputs: Apache request handler ($r), text to display.
1684:
1685: Returns: Nothing.
1686:
1687: =over 4
1688:
1689: =item &update_count_status()
1690:
1691: =item &update_status()
1692:
1693: =item &update_seconds()
1694:
1695: =back
1696:
1697: =cut
1698:
1699: ######################################################################
1700: ######################################################################
1701: sub update_count_status {
1702: my ($r,$text) = @_;
1703: $text =~ s/\'/\\\'/g;
1704: $r->print
1705: ("<script>document.statusform.count.value = ' $text'</script>\n");
1706: $r->rflush();
1707: }
1708:
1709: sub update_status {
1710: my ($r,$text) = @_;
1711: $text =~ s/\'/\\\'/g;
1712: $r->print
1713: ("<script>document.statusform.status.value = ' $text'</script>\n");
1714: $r->rflush();
1715: }
1716:
1717: sub update_seconds {
1718: my ($r,$text) = @_;
1719: $text =~ s/\'/\\\'/g;
1720: $r->print
1721: ("<script>document.statusform.seconds.value = ' $text'</script>\n");
1722: $r->rflush();
1723: }
1724:
1725: ######################################################################
1726: ######################################################################
1727:
1728: =pod
1729:
1730: =item &revise_button()
1731:
1732: Inputs: None
1733:
1734: Returns: html string for a 'revise search' button.
1735:
1736: =cut
1737:
1738: ######################################################################
1739: ######################################################################
1740: sub revise_button {
1741: my $revise_phase = 'disp_basic';
1742: $revise_phase = 'disp_adv' if ($ENV{'form.searchmode'} eq 'advanced');
1743: my $newloc = '/adm/searchcat'.
1744: '?persistent_db_id='.$ENV{'form.persistent_db_id'}.
1745: '&cleargroupsort=1'.
1746: '&phase='.$revise_phase;
1747: my $result = qq{<input type="button" value="Revise search" name="revise"} .
1748: qq{ onClick="parent.location='$newloc';" /> };
1749: return $result;
1750: }
1751:
1752: ######################################################################
1753: ######################################################################
1754:
1755: =pod
1756:
1757: =item &run_search()
1758:
1759: Executes a search query by sending it the the other servers and putting the
1760: results into MySQL.
1761:
1762: =cut
1763:
1764: ######################################################################
1765: ######################################################################
1766: sub run_search {
1767: my ($r,$query,$customquery,$customshow,$serverlist,$pretty_string) = @_;
1768: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1769: my $connection = $r->connection;
1770: #
1771: # Timing variables
1772: #
1773: my $starttime = time;
1774: my $max_time = 30; # seconds for the search to complete
1775: #
1776: # Print run_search header
1777: #
1778: $r->print(<<END);
1779: <html>
1780: <head><title>Search Status</title></head>
1781: $bodytag
1782: <form name="statusform" action="" method="post">
1783: <input type="hidden" name="Queue" value="" />
1784: END
1785: # Check to see if $pretty_string has more than one carriage return.
1786: # Assume \n s are following <br /> s and truncate the value.
1787: # (there is probably a better way)...
1788: my @Lines = split /<br \/>/,$pretty_string;
1789: if (@Lines > 2) {
1790: $pretty_string = join '<br \>',(@Lines[0..2],'....<br />');
1791: }
1792: $r->print(&mt("Search").": ".$pretty_string);
1793: $r->rflush();
1794: #
1795: # Determine the servers we need to contact.
1796: my @Servers_to_contact;
1797: if (defined($serverlist)) {
1798: if (ref($serverlist) eq 'ARRAY') {
1799: @Servers_to_contact = @$serverlist;
1800: } else {
1801: @Servers_to_contact = ($serverlist);
1802: }
1803: } else {
1804: @Servers_to_contact = sort(keys(%Apache::lonnet::libserv));
1805: }
1806: my %Server_status;
1807: my $table =$ENV{'form.table'};
1808: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
1809: $r->print("Unable to determine table id to store search results in.".
1810: "The search has been aborted.</body></html>");
1811: return;
1812: }
1813: my $table_status = &Apache::lonmysql::check_table($table);
1814: if (! defined($table_status)) {
1815: $r->print("Unable to determine status of table.</body></html>");
1816: &Apache::lonnet::logthis("Bogus table id of $table for ".
1817: "$ENV{'user.name'} @ $ENV{'user.domain'}");
1818: &Apache::lonnet::logthis("lonmysql error = ".
1819: &Apache::lonmysql::get_error());
1820: return;
1821: }
1822: if (! $table_status) {
1823: &Apache::lonnet::logthis("lonmysql error = ".
1824: &Apache::lonmysql::get_error());
1825: &Apache::lonnet::logthis("lonmysql debug = ".
1826: &Apache::lonmysql::get_debug());
1827: &Apache::lonnet::logthis('table status = "'.$table_status.'"');
1828: $r->print("The table id,$table, we tried to use is invalid.".
1829: "The search has been aborted.</body></html>");
1830: return;
1831: }
1832: ##
1833: ## Prepare for the big loop.
1834: my $hitcountsum;
1835: my $server;
1836: my $status;
1837: my $revise = &revise_button();
1838: $r->print(<<END);
1839: <table>
1840: <tr><th>Status</th><th>Total Matches</th><th>Time Remaining</th><th></th></tr>
1841: <tr>
1842: <td><input type="text" name="status" value="" size="30" /></td>
1843: <td><input type="text" name="count" value="" size="10" /></td>
1844: <td><input type="text" name="seconds" value="" size="8" /></td>
1845: <td>$revise</td>
1846: </tr>
1847: </table>
1848: </form>
1849: END
1850: $r->rflush();
1851: my $time_remaining = $max_time - (time - $starttime) ;
1852: my $last_time = $time_remaining;
1853: &update_seconds($r,$time_remaining);
1854: &update_status($r,'contacting '.$Servers_to_contact[0]);
1855: while (($time_remaining > 0) &&
1856: ((@Servers_to_contact) || keys(%Server_status))) {
1857: # Send out a search request if it needs to be done.
1858: if (@Servers_to_contact) {
1859: # Contact one server
1860: my $server = shift(@Servers_to_contact);
1861: &update_status($r,&mt('contacting').' '.$server);
1862: my $reply=&Apache::lonnet::metadata_query($query,$customquery,
1863: $customshow,[$server]);
1864: ($server) = keys(%$reply);
1865: $Server_status{$server} = $reply->{$server};
1866: } else {
1867: # wait a sec. to give time for files to be written
1868: # This sleep statement is here instead of outside the else
1869: # block because we do not want to pause if we have servers
1870: # left to contact.
1871: if (scalar (keys(%Server_status))) {
1872: &update_status($r,
1873: &mt('waiting on').' '.(join(' ',keys(%Server_status))));
1874: }
1875: sleep(1);
1876: }
1877: #
1878: # Loop through the servers we have contacted but do not
1879: # have results from yet, looking for results.
1880: while (my ($server,$status) = each(%Server_status)) {
1881: last if ($connection->aborted());
1882: if ($status eq 'con_lost') {
1883: delete ($Server_status{$server});
1884: next;
1885: }
1886: $status=~/^([\.\w]+)$/;
1887: my $datafile=$r->dir_config('lonDaemons').'/tmp/'.$1;
1888: if (-e $datafile && ! -e "$datafile.end") {
1889: &update_status($r,&mt('Receiving results from').' '.$server);
1890: next;
1891: }
1892: last if ($connection->aborted());
1893: if (-e "$datafile.end") {
1894: &update_status($r,&mt('Reading results from').' '.$server);
1895: if (-z "$datafile") {
1896: delete($Server_status{$server});
1897: next;
1898: }
1899: my $fh;
1900: if (!($fh=Apache::File->new($datafile))) {
1901: $r->print("Unable to open search results file for ".
1902: "server $server. Omitting from search");
1903: delete($Server_status{$server});
1904: next;
1905: }
1906: # Read in the whole file.
1907: while (my $result = <$fh>) {
1908: last if ($connection->aborted());
1909: # handle custom fields? Someday we will!
1910: chomp($result);
1911: next unless $result;
1912: # Parse the result.
1913: my %Fields = &parse_raw_result($result,$server);
1914: $Fields{'hostname'} = $server;
1915: next if (! ©right_check(\%Fields));
1916: # Store the result in the mysql database
1917: my $result = &Apache::lonmysql::store_row($table,\%Fields);
1918: if (! defined($result)) {
1919: $r->print(&Apache::lonmysql::get_error());
1920: }
1921: # $r->print(&Apache::lonmysql::get_debug());
1922: $hitcountsum ++;
1923: $time_remaining = $max_time - (time - $starttime) ;
1924: if ($last_time - $time_remaining > 0) {
1925: &update_seconds($r,$time_remaining);
1926: $last_time = $time_remaining;
1927: }
1928: if ($hitcountsum % 50 == 0) {
1929: &update_count_status($r,$hitcountsum);
1930: }
1931: } # End of foreach (@results)
1932: $fh->close();
1933: # $server is only deleted if the results file has been
1934: # found and (successfully) opened. This may be a bad idea.
1935: delete($Server_status{$server});
1936: }
1937: last if ($connection->aborted());
1938: &update_count_status($r,$hitcountsum);
1939: }
1940: last if ($connection->aborted());
1941: # Finished looping through the servers
1942: $starttime = time if (@Servers_to_contact);
1943: $time_remaining = $max_time - (time - $starttime) ;
1944: if ($last_time - $time_remaining > 0) {
1945: $last_time = $time_remaining;
1946: &update_seconds($r,$time_remaining);
1947: }
1948: }
1949: &update_status($r,&mt('Search Complete').$server);
1950: &update_seconds($r,0);
1951: #
1952: &Apache::lonmysql::disconnect_from_db();
1953: #
1954: # We have run out of time or run out of servers to talk to and
1955: # results to get.
1956: $r->print("</body></html>");
1957: if ($ENV{'form.catalogmode'} ne 'groupsearch') {
1958: $r->print("<script>".
1959: "window.location='/adm/searchcat?".
1960: "phase=sort&".
1961: "persistent_db_id=$ENV{'form.persistent_db_id'}';".
1962: "</script>");
1963: }
1964: return;
1965: }
1966:
1967: ######################################################################
1968: ######################################################################
1969:
1970: =pod
1971:
1972: =item &prev_next_buttons()
1973:
1974: Returns html for the previous and next buttons on the search results page.
1975:
1976: =cut
1977:
1978: ######################################################################
1979: ######################################################################
1980: sub prev_next_buttons {
1981: my ($current_min,$show,$total,$parms) = @_;
1982: return '' if ($show eq 'all'); # No links if you get them all at once.
1983: my $links;
1984: ##
1985: ## Prev
1986: my $prev_min = $current_min - $show;
1987: $prev_min = 1 if $prev_min < 1;
1988: if ($prev_min < $current_min) {
1989: $links .=
1990: qq{<a href="/adm/searchcat?$parms&start=$prev_min&show=$show">}.
1991: &mt('prev').'</a>';
1992: } else {
1993: $links .= &mt('prev');
1994: }
1995: ##
1996: ## Pages.... Someday.
1997: ##
1998: $links .=
1999: qq{
2000: <a href="/adm/searchcat?$parms&start=$current_min&$show=$show">}.
2001: &mt('reload').'</a>';
2002: ##
2003: ## Next
2004: my $next_min = $current_min + $show;
2005: $next_min = $current_min if ($next_min > $total);
2006: if ($next_min != $current_min) {
2007: $links .=
2008: qq{
2009: <a href="/adm/searchcat?$parms&start=$next_min&show=$show">}.
2010: &mt('next').'</a>';
2011: } else {
2012: $links .= ' '.&mt('next');
2013: }
2014: return $links;
2015: }
2016:
2017: ######################################################################
2018: ######################################################################
2019:
2020: =pod
2021:
2022: =item &display_results()
2023:
2024: Prints the results out for selection and perusal.
2025:
2026: =cut
2027:
2028: ######################################################################
2029: ######################################################################
2030: sub display_results {
2031: my ($r,$importbutton,$closebutton,$diropendb) = @_;
2032: my $connection = $r->connection;
2033: $r->print(&search_results_header($importbutton,$closebutton));
2034: ##
2035: ## Set viewing function
2036: ##
2037: my $viewfunction = $Views{$ENV{'form.viewselect'}};
2038: if (!defined($viewfunction)) {
2039: $r->print("Internal Error - Bad view selected.\n");
2040: $r->rflush();
2041: return;
2042: }
2043: ##
2044: ## $checkbox_num is a count of the number of checkboxes output on the
2045: ## page this is used only during catalogmode=groupsearch.
2046: my $checkbox_num = 0;
2047: ##
2048: ## Get the catalog controls setup
2049: ##
2050: my $action = "/adm/searchcat?phase=results";
2051: ##
2052: ## Deal with groupsearch by opening the groupsearch db file.
2053: if ($ENV{'form.catalogmode'} eq 'groupsearch') {
2054: if (! tie(%groupsearch_db,'GDBM_File',$diropendb,
2055: &GDBM_WRCREAT(),0640)) {
2056: $r->print('Unable to store import results.</form></body></html>');
2057: $r->rflush();
2058: return;
2059: }
2060: }
2061: ##
2062: ## Prepare the table for querying
2063: my $table = $ENV{'form.table'};
2064: return if (! &ensure_db_and_table($r,$table));
2065: ##
2066: ## Get the number of results
2067: my $total_results = &Apache::lonmysql::number_of_rows($table);
2068: if (! defined($total_results)) {
2069: $r->print("A MySQL error has occurred.</form></body></html>");
2070: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
2071: " of rows in table ".$table);
2072: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
2073: return;
2074: }
2075: ##
2076: ## Determine how many results we need to get
2077: $ENV{'form.start'} = 1 if (! exists($ENV{'form.start'}));
2078: $ENV{'form.show'} = 'all' if (! exists($ENV{'form.show'}));
2079: my $min = $ENV{'form.start'};
2080: my $max;
2081: if ($ENV{'form.show'} eq 'all') {
2082: $max = $total_results ;
2083: } else {
2084: $max = $min + $ENV{'form.show'} - 1;
2085: $max = $total_results if ($max > $total_results);
2086: }
2087: ##
2088: ## Output links (if necessary) for 'prev' and 'next' pages.
2089: $r->print
2090: ('<center>'.
2091: &prev_next_buttons($min,$ENV{'form.show'},$total_results,
2092: "table=".$ENV{'form.table'}.
2093: "&phase=results".
2094: "&persistent_db_id=".$ENV{'form.persistent_db_id'})
2095: ."</center>\n"
2096: );
2097: if ($total_results == 0) {
2098: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="1">'.
2099: '<h3>'.&mt('There are currently no results').'.</h3>'.
2100: "</form></body></html>");
2101: return;
2102: } else {
2103: $r->print
2104: ("<center>Results $min to $max out of $total_results</center>\n");
2105: }
2106: ##
2107: ## Get results from MySQL table
2108: my @Results = &Apache::lonmysql::get_rows($table,
2109: 'id>='.$min.' AND id<='.$max);
2110: ##
2111: ## Loop through the results and output them.
2112: foreach my $row (@Results) {
2113: if ($connection->aborted()) {
2114: &cleanup();
2115: return;
2116: }
2117: my %Fields = %{&parse_row(@$row)};
2118: my $output="<p>\n";
2119: my $prefix=&catalogmode_output($Fields{'title'},$Fields{'url'},
2120: $Fields{'id'},$checkbox_num++);
2121: # Render the result into html
2122: $output.= &$viewfunction($prefix,%Fields);
2123: # Print them out as they come in.
2124: $r->print($output);
2125: $r->rflush();
2126: }
2127: if (@Results < 1) {
2128: $r->print(&mt("There were no results matching your query"));
2129: } else {
2130: $r->print
2131: ('<center>'.
2132: &prev_next_buttons($min,$ENV{'form.show'},$total_results,
2133: "table=".$ENV{'form.table'}.
2134: "&phase=results".
2135: "&persistent_db_id=".
2136: $ENV{'form.persistent_db_id'})
2137: ."</center>\n"
2138: );
2139: }
2140: $r->print("</form></body></html>");
2141: $r->rflush();
2142: untie %groupsearch_db if (tied(%groupsearch_db));
2143: return;
2144: }
2145:
2146: ######################################################################
2147: ######################################################################
2148:
2149: =pod
2150:
2151: =item &catalogmode_output($title,$url,$fnum,$checkbox_num)
2152:
2153: Returns html needed for the various catalog modes. Gets inputs from
2154: $ENV{'form.catalogmode'}. Stores data in %groupsearch_db.
2155:
2156: =cut
2157:
2158: ######################################################################
2159: ######################################################################
2160: sub catalogmode_output {
2161: my $output = '';
2162: my ($title,$url,$fnum,$checkbox_num) = @_;
2163: if ($ENV{'form.catalogmode'} eq 'interactive') {
2164: $title=~ s/\'/\\\'/g;
2165: if ($ENV{'form.catalogmode'} eq 'interactive') {
2166: $output.=<<END
2167: <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
2168: onClick="javascript:select_data('$title','$url')">
2169: </font>
2170: END
2171: }
2172: } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
2173: $groupsearch_db{"pre_${fnum}_link"}=$url;
2174: $groupsearch_db{"pre_${fnum}_title"}=$title;
2175: $output.=<<END;
2176: <font size='-1'>
2177: <input type="checkbox" name="returnvalues" value="SELECT"
2178: onClick="javascript:queue($checkbox_num,$fnum)" />
2179: </font>
2180: END
2181: }
2182: return $output;
2183: }
2184: ######################################################################
2185: ######################################################################
2186:
2187: =pod
2188:
2189: =item &parse_row()
2190:
2191: Parse a row returned from the database.
2192:
2193: =cut
2194:
2195: ######################################################################
2196: ######################################################################
2197: sub parse_row {
2198: my @Row = @_;
2199: my %Fields;
2200: if (! scalar(@Datatypes)) {
2201: &set_up_table_structure();
2202: }
2203: for (my $i=0;$i<=$#Row;$i++) {
2204: $Fields{$Datatypes[$i]->{'name'}}=&Apache::lonnet::unescape($Row[$i]);
2205: }
2206: $Fields{'language'} =
2207: &Apache::loncommon::languagedescription($Fields{'language'});
2208: $Fields{'copyrighttag'} =
2209: &Apache::loncommon::copyrightdescription($Fields{'copyright'});
2210: $Fields{'mimetag'} =
2211: &Apache::loncommon::filedescription($Fields{'mime'});
2212: return \%Fields;
2213: }
2214:
2215: ###########################################################
2216: ###########################################################
2217:
2218: =pod
2219:
2220: =item &parse_raw_result()
2221:
2222: Takes a line from the file of results and parse it. Returns a hash
2223: with keys according to column labels
2224:
2225: In addition, the following tags are set by calling the appropriate
2226: lonnet function: 'language', 'copyrighttag', 'mimetag'.
2227:
2228: The 'title' field is set to "Untitled" if the title field is blank.
2229:
2230: 'abstract' and 'keywords' are truncated to 200 characters.
2231:
2232: =cut
2233:
2234: ###########################################################
2235: ###########################################################
2236: sub parse_raw_result {
2237: my ($result,$hostname) = @_;
2238: # conclude from self to others regarding fields
2239: my %Fields=&Apache::lonmeta::metadata_col_to_hash(
2240: map {
2241: &Apache::lonnet::unescape($_);
2242: } (split(/\,/,$result))
2243: );
2244: return %Fields;
2245: }
2246:
2247: ###########################################################
2248: ###########################################################
2249:
2250: =pod
2251:
2252: =item &handle_custom_fields()
2253:
2254: =cut
2255:
2256: ###########################################################
2257: ###########################################################
2258: sub handle_custom_fields {
2259: my @results = @{shift()};
2260: my $customshow='';
2261: my $extrashow='';
2262: my @customfields;
2263: if ($ENV{'form.customshow'}) {
2264: $customshow=$ENV{'form.customshow'};
2265: $customshow=~s/[^\w\s]//g;
2266: my @fields=map {
2267: "<font color=\"#008000\">$_:</font><!-- $_ -->";
2268: } split(/\s+/,$customshow);
2269: @customfields=split(/\s+/,$customshow);
2270: if ($customshow) {
2271: $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
2272: }
2273: }
2274: my $customdata='';
2275: my %customhash;
2276: foreach my $result (@results) {
2277: if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
2278: my $tmp=$result;
2279: $tmp=~s/^custom\=//;
2280: my ($k,$v)=map {&Apache::lonnet::unescape($_);
2281: } split(/\,/,$tmp);
2282: $customhash{$k}=$v;
2283: }
2284: }
2285: return ($extrashow,\@customfields,\%customhash);
2286: }
2287:
2288: ######################################################################
2289: ######################################################################
2290:
2291: =pod
2292:
2293: =item &search_results_header()
2294:
2295: Output the proper html headers and javascript code to deal with different
2296: calling modes.
2297:
2298: Takes most inputs directly from %ENV, except $mode.
2299:
2300: =over 4
2301:
2302: =item $mode is either (at this writing) 'Basic' or 'Advanced'
2303:
2304: =back
2305:
2306: The following environment variables are checked:
2307:
2308: =over 4
2309:
2310: =item 'form.catalogmode'
2311:
2312: Checked for 'interactive' and 'groupsearch'.
2313:
2314: =item 'form.mode'
2315:
2316: Checked for existance & 'edit' mode.
2317:
2318: =item 'form.form'
2319:
2320: Contains the name of the form that has the input fields to set
2321:
2322: =item 'form.element'
2323:
2324: the name of the input field to put the URL into
2325:
2326: =item 'form.titleelement'
2327:
2328: the name of the input field to put the title into
2329:
2330: =back
2331:
2332: =cut
2333:
2334: ######################################################################
2335: ######################################################################
2336: sub search_results_header {
2337: my ($importbutton,$closebutton) = @_;
2338: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
2339: my $result = '';
2340: # output beginning of search page
2341: # conditional output of script functions dependent on the mode in
2342: # which the search was invoked
2343: if ($ENV{'form.catalogmode'} eq 'interactive'){
2344: if (! exists($ENV{'form.mode'}) || $ENV{'form.mode'} ne 'edit') {
2345: $result.=<<SCRIPT;
2346: <script type="text/javascript">
2347: function select_data(title,url) {
2348: changeTitle(title);
2349: changeURL(url);
2350: parent.close();
2351: }
2352: function changeTitle(val) {
2353: if (parent.opener.inf.document.forms.resinfo.elements.t) {
2354: parent.opener.inf.document.forms.resinfo.elements.t.value=val;
2355: }
2356: }
2357: function changeURL(val) {
2358: if (parent.opener.inf.document.forms.resinfo.elements.u) {
2359: parent.opener.inf.document.forms.resinfo.elements.u.value=val;
2360: }
2361: }
2362: </script>
2363: SCRIPT
2364: } elsif ($ENV{'form.mode'} eq 'edit') {
2365: my $form = $ENV{'form.form'};
2366: my $element = $ENV{'form.element'};
2367: my $titleelement = $ENV{'form.titleelement'};
2368: my $changetitle;
2369: if (!$titleelement) {
2370: $changetitle='function changeTitle(val) {}';
2371: } else {
2372: $changetitle=<<END;
2373: function changeTitle(val) {
2374: if (parent.targetwin.document) {
2375: parent.targetwin.document.forms["$form"].elements["$titleelement"].value=val;
2376: } else {
2377: var url = 'forms[\"$form\"].elements[\"$titleelement\"].value';
2378: alert("Unable to transfer data to "+url);
2379: }
2380: }
2381: END
2382: }
2383:
2384: $result.=<<SCRIPT;
2385: <script type="text/javascript">
2386: function select_data(title,url) {
2387: changeURL(url);
2388: changeTitle(title);
2389: parent.close();
2390: }
2391: $changetitle
2392: function changeURL(val) {
2393: if (parent.targetwin.document) {
2394: parent.targetwin.document.forms["$form"].elements["$element"].value=val;
2395: } else {
2396: var url = 'forms[\"$form\"].elements[\"$element\"].value';
2397: alert("Unable to transfer data to "+url);
2398: }
2399: }
2400: </script>
2401: SCRIPT
2402: }
2403: }
2404: $result.=<<SCRIPT if $ENV{'form.catalogmode'} eq 'groupsearch';
2405: <script type="text/javascript">
2406: function queue(checkbox_num,val) {
2407: if (document.forms.results.returnvalues.length != "undefined" &&
2408: typeof(document.forms.results.returnvalues.length) == "number") {
2409: if (document.forms.results.returnvalues[checkbox_num].checked) {
2410: parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
2411: } else {
2412: parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
2413: }
2414: } else {
2415: if (document.forms.results.returnvalues.checked) {
2416: parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
2417: } else {
2418: parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
2419: }
2420: }
2421: }
2422: function select_group() {
2423: parent.window.location=
2424: "/adm/groupsort?mode=$ENV{'form.mode'}&catalogmode=groupsearch&acts="+
2425: parent.statusframe.document.forms.statusform.elements.Queue.value;
2426: }
2427: </script>
2428: SCRIPT
2429: $result.=<<END;
2430: </head>
2431: $bodytag
2432: <form name="results" method="post" action="" >
2433: <input type="hidden" name="Queue" value="" />
2434: $importbutton
2435: END
2436: return $result;
2437: }
2438:
2439: ######################################################################
2440: ######################################################################
2441: sub search_status_header {
2442: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
2443: return <<ENDSTATUS;
2444: <html><head><title>Search Status</title></head>
2445: $bodytag
2446: <h3>Search Status</h3>
2447: Sending search request to LON-CAPA servers.<br />
2448: ENDSTATUS
2449: }
2450:
2451: sub results_link {
2452: my $basic_link = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
2453: "&persistent_db_id=".$ENV{'form.persistent_db_id'};
2454: my $results_link = $basic_link."&phase=results".
2455: "&pause=1"."&start=1";
2456: return $results_link;
2457: }
2458:
2459: ######################################################################
2460: ######################################################################
2461: sub print_frames_interface {
2462: my $r = shift;
2463: my $basic_link = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
2464: "&persistent_db_id=".$ENV{'form.persistent_db_id'};
2465: my $run_search_link = $basic_link."&phase=run_search";
2466: my $results_link = &results_link();
2467: my $result = <<"ENDFRAMES";
2468: <html>
2469: <head>
2470: <script>
2471: var targetwin = opener;
2472: var queue = '';
2473: </script>
2474: <title>LON-CAPA Digital Library Search Results</title>
2475: </head>
2476: <frameset rows="150,*">
2477: <frame name="statusframe" src="$run_search_link">
2478: <frame name="resultsframe" src="$results_link">
2479: </frameset>
2480: </html>
2481: ENDFRAMES
2482:
2483: $r->print($result);
2484: return;
2485: }
2486:
2487: ######################################################################
2488: ######################################################################
2489:
2490: =pod
2491:
2492: =item Metadata Viewing Functions
2493:
2494: Output is a HTML-ified string.
2495:
2496: Input arguments are title, author, subject, url, keywords, version,
2497: notes, short abstract, mime, language, creation date,
2498: last revision date, owner, copyright, hostname, and
2499: extra custom metadata to show.
2500:
2501: =over 4
2502:
2503: =item &detailed_citation_view()
2504:
2505: =cut
2506:
2507: ######################################################################
2508: ######################################################################
2509: sub detailed_citation_view {
2510: my ($prefix,%values) = @_;
2511: my $icon=&Apache::loncommon::icon($values{'url'});
2512: my $result=<<END;
2513: <b>$prefix<img src="$icon" /><a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
2514: target='search_preview'>$values{'title'}</a></b>
2515: <p>
2516: <b>$values{'author'}</b>, <i>$values{'owner'}</i><br />
2517:
2518: <b>Subject: </b> $values{'subject'}<br />
2519: <b>Keyword(s): </b> $values{'keywords'}<br />
2520: <b>Notes: </b> $values{'notes'}<br />
2521: <b>MIME Type: </b> $values{'mimetag'}<br />
2522: <b>Language: </b> $values{'language'}<br />
2523: <b>Copyright/Distribution:</b> $values{'copyrighttag'}<br />
2524: </p>
2525: $values{'extrashow'}
2526: <p>
2527: $values{'shortabstract'}
2528: </p>
2529: <hr align='left' width='200' noshade />
2530: END
2531: return $result;
2532: }
2533:
2534: ######################################################################
2535: ######################################################################
2536:
2537: =pod
2538:
2539: =item &summary_view()
2540:
2541: =cut
2542: ######################################################################
2543: ######################################################################
2544: sub summary_view {
2545: my ($prefix,%values) = @_;
2546: my $icon=&Apache::loncommon::icon($values{'url'});
2547: my $result=<<END;
2548: $prefix<img src="$icon" /><a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
2549: target='search_preview'>$values{'author'}</a><br />
2550: $values{'title'}<br />
2551: $values{'owner'} -- $values{'lastrevisiondate'}<br />
2552: $values{'copyrighttag'}<br />
2553: $values{'extrashow'}
2554: </p>
2555: <hr align='left' width='200' noshade />
2556: END
2557: return $result;
2558: }
2559:
2560: ######################################################################
2561: ######################################################################
2562:
2563: =pod
2564:
2565: =item &compact_view()
2566:
2567: =cut
2568:
2569: ######################################################################
2570: ######################################################################
2571: sub compact_view {
2572: my ($prefix,%values) = @_;
2573: my $icon=&Apache::loncommon::icon($values{'url'});
2574: my $result=<<END;
2575: $prefix <img src="$icon" /> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}" target='search_preview'>
2576: $values{'title'}</a>
2577: <b>$values{'author'}</b><br />
2578: END
2579: return $result;
2580: }
2581:
2582:
2583: ######################################################################
2584: ######################################################################
2585:
2586: =pod
2587:
2588: =item &fielded_format_view()
2589:
2590: =cut
2591:
2592: ######################################################################
2593: ######################################################################
2594: sub fielded_format_view {
2595: my ($prefix,%values) = @_;
2596: my $icon=&Apache::loncommon::icon($values{'url'});
2597: my $result=<<END;
2598: $prefix <img src="$icon" />
2599: <b>URL: </b> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
2600: target='search_preview'>$values{'url'}</a>
2601: <br />
2602: <b>Title:</b> $values{'title'}<br />
2603: <b>Author(s):</b> $values{'author'}<br />
2604: <b>Subject:</b> $values{'subject'}<br />
2605: <b>Keyword(s):</b> $values{'keywords'}<br />
2606: <b>Notes:</b> $values{'notes'}<br />
2607: <b>MIME Type:</b> $values{'mimetag'}<br />
2608: <b>Language:</b> $values{'language'}<br />
2609: <b>Creation Date:</b> $values{'creationdate'}<br />
2610: <b>Last Revision Date:</b> $values{'lastrevisiondate'}<br />
2611: <b>Publisher/Owner:</b> $values{'owner'}<br />
2612: <b>Copyright/Distribution:</b> $values{'copyrighttag'}<br />
2613: <b>Repository Location:</b> $values{'hostname'}<br />
2614: <b>Abstract:</b> $values{'shortabstract'}<br />
2615: $values{'extrashow'}
2616: </p>
2617: <hr align='left' width='200' noshade />
2618: END
2619: return $result;
2620: }
2621:
2622: ######################################################################
2623: ######################################################################
2624:
2625: =pod
2626:
2627: =item &xml_sgml_view()
2628:
2629: =back
2630:
2631: =cut
2632:
2633: ######################################################################
2634: ######################################################################
2635: sub xml_sgml_view {
2636: my ($prefix,%values) = @_;
2637: my $result=<<END;
2638: $prefix
2639: <pre>
2640: <LonCapaResource>
2641: <url>$values{'url'}</url>
2642: <title>$values{'title'}</title>
2643: <author>$values{'author'}</author>
2644: <subject>$values{'subject'}</subject>
2645: <keywords>$values{'keywords'}</keywords>
2646: <notes>$values{'notes'}</notes>
2647: <mimeInfo>
2648: <mime>$values{'mime'}</mime>
2649: <mimetag>$values{'mimetag'}</mimetag>
2650: </mimeInfo>
2651: <languageInfo>
2652: <language>$values{'language'}</language>
2653: <languagetag>$values{'languagetag'}</languagetag>
2654: </languageInfo>
2655: <creationdate>$values{'creationdate'}</creationdate>
2656: <lastrevisiondate>$values{'lastrevisiondate'}</lastrevisiondate>
2657: <owner>$values{'owner'}</owner>
2658: <copyrightInfo>
2659: <copyright>$values{'copyright'}</copyright>
2660: <copyrighttag>$values{'copyrighttag'}</copyrighttag>
2661: </copyrightInfo>
2662: <repositoryLocation>$values{'hostname'}</repositoryLocation>
2663: <shortabstract>$values{'shortabstract'}</shortabstract>
2664: </LonCapaResource>
2665: </pre>
2666: $values{'extrashow'}
2667: <hr align='left' width='200' noshade />
2668: END
2669: return $result;
2670: }
2671:
2672: ######################################################################
2673: ######################################################################
2674:
2675: =pod
2676:
2677: =item &filled() see if field is filled.
2678:
2679: =cut
2680:
2681: ######################################################################
2682: ######################################################################
2683: sub filled {
2684: my ($field)=@_;
2685: if ($field=~/\S/ && $field ne 'any') {
2686: return 1;
2687: } else {
2688: return 0;
2689: }
2690: }
2691:
2692: ######################################################################
2693: ######################################################################
2694:
2695: =pod
2696:
2697: =item &output_blank_field_error()
2698:
2699: Output a complete page that indicates the user has not filled in enough
2700: information to do a search.
2701:
2702: Inputs: $r (Apache request handle), $closebutton, $parms.
2703:
2704: Returns: nothing
2705:
2706: $parms is extra information to include in the 'Revise search request' link.
2707:
2708: =cut
2709:
2710: ######################################################################
2711: ######################################################################
2712: sub output_blank_field_error {
2713: my ($r,$closebutton,$parms,$hidden_fields)=@_;
2714: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
2715: # make query information persistent to allow for subsequent revision
2716: $r->print(<<BEGINNING);
2717: <html>
2718: <head>
2719: <title>The LearningOnline Network with CAPA</title>
2720: BEGINNING
2721: $r->print(<<RESULTS);
2722: </head>
2723: $bodytag
2724: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
2725: <h1>Search Catalog</h1>
2726: <form method="post" action="/adm/searchcat">
2727: $hidden_fields
2728: <a href="/adm/searchcat?$parms&persistent_db_id=$ENV{'form.persistent_db_id'}"
2729: >Revise search request</a>
2730: $closebutton
2731: <hr />
2732: <h3>Unactionable search query.</h3>
2733: <p>
2734: You did not fill in enough information for the search to be started.
2735: You need to fill in relevant fields on the search page in order
2736: for a query to be processed.
2737: </p>
2738: </body>
2739: </html>
2740: RESULTS
2741: }
2742:
2743: ######################################################################
2744: ######################################################################
2745:
2746: =pod
2747:
2748: =item &output_date_error()
2749:
2750: Output a full html page with an error message.
2751:
2752: Inputs:
2753:
2754: $r, the request pointer.
2755: $message, the error message for the user.
2756: $closebutton, the specialized close button needed for groupsearch.
2757:
2758: =cut
2759:
2760: ######################################################################
2761: ######################################################################
2762: sub output_date_error {
2763: my ($r,$message,$closebutton,$hidden_fields)=@_;
2764: # make query information persistent to allow for subsequent revision
2765: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
2766: $r->print(<<RESULTS);
2767: <html>
2768: <head>
2769: <title>The LearningOnline Network with CAPA</title>
2770: </head>
2771: $bodytag
2772: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
2773: <h1>Search Catalog</h1>
2774: <form method="post" action="/adm/searchcat">
2775: $hidden_fields
2776: <input type='button' value='Revise search request'
2777: onClick='this.form.submit();' />
2778: $closebutton
2779: <hr />
2780: <h3>Error</h3>
2781: <p>
2782: $message
2783: </p>
2784: </body>
2785: </html>
2786: RESULTS
2787: }
2788:
2789: ######################################################################
2790: ######################################################################
2791:
2792: =pod
2793:
2794: =item &start_fresh_session()
2795:
2796: Cleans the global %groupsearch_db by removing all fields which begin with
2797: 'pre_' or 'store'.
2798:
2799: =cut
2800:
2801: ######################################################################
2802: ######################################################################
2803: sub start_fresh_session {
2804: delete $groupsearch_db{'mode_catalog'};
2805: foreach (keys %groupsearch_db) {
2806: if ($_ =~ /^pre_/) {
2807: delete $groupsearch_db{$_};
2808: }
2809: if ($_ =~ /^store/) {
2810: delete $groupsearch_db{$_};
2811: }
2812: }
2813: }
2814:
2815: 1;
2816:
2817: sub cleanup {
2818: if (tied(%groupsearch_db)) {
2819: unless (untie(%groupsearch_db)) {
2820: &Apache::lonnet::logthis('Failed cleanup searchcat: groupsearch_db');
2821: }
2822: }
2823: &untiehash();
2824: &Apache::lonmysql::disconnect_from_db();
2825: }
2826:
2827: __END__
2828:
2829: =pod
2830:
2831: =back
2832:
2833: =cut
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