Annotation of loncom/interface/lonsearchcat.pm, revision 1.182
1.98 harris41 1: # The LearningOnline Network with CAPA
1.108 harris41 2: # Search Catalog
3: #
1.182 ! matthew 4: # $Id: lonsearchcat.pm,v 1.181 2003/06/17 15:53:56 matthew Exp $
1.108 harris41 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.
1.98 harris41 14: #
1.108 harris41 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/
1.1 www 27: #
1.121 matthew 28: ###############################################################################
29: ###############################################################################
30:
31: =pod
32:
33: =head1 NAME
34:
1.140 matthew 35: lonsearchcat - LONCAPA Search Interface
1.121 matthew 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.
1.104 harris41 44:
1.121 matthew 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 seperate window.
52:
53: =head1 Internals
54:
55: =over 4
56:
57: =cut
58:
59: ###############################################################################
1.98 harris41 60: ###############################################################################
1.121 matthew 61:
1.128 harris41 62: ###############################################################################
1.98 harris41 63: ## ##
64: ## ORGANIZATION OF THIS PERL MODULE ##
65: ## ##
1.105 harris41 66: ## 1. Modules used by this module ##
1.128 harris41 67: ## 2. Variables used throughout the module ##
68: ## 3. handler subroutine called via Apache and mod_perl ##
69: ## 4. Other subroutines ##
1.98 harris41 70: ## ##
71: ###############################################################################
72:
1.1 www 73: package Apache::lonsearchcat;
74:
1.98 harris41 75: # ------------------------------------------------- modules used by this module
1.1 www 76: use strict;
1.167 www 77: use Apache::Constants qw(:common :http);
1.6 harris41 78: use Apache::lonnet();
79: use Apache::File();
1.7 harris41 80: use CGI qw(:standard);
1.41 harris41 81: use Text::Query;
1.101 harris41 82: use GDBM_File;
1.112 harris41 83: use Apache::loncommon();
1.144 matthew 84: use Apache::lonmysql();
1.1 www 85:
1.90 harris41 86: # ---------------------------------------- variables used throughout the module
87:
1.121 matthew 88: ######################################################################
89: ######################################################################
90:
91: =pod
92:
93: =item Global variables
94:
95: =over 4
96:
97: =item $importbutton
98:
1.134 matthew 99: button to take the select results and go to group sorting
1.121 matthew 100:
1.142 matthew 101: =item %groupsearch_db
1.121 matthew 102:
1.142 matthew 103: Database hash used to save values for the groupsearch RAT interface.
1.121 matthew 104:
105: =item $diropendb
106:
107: The full path to the (temporary) search database file. This is set and
108: used in &handler() and is also used in &output_results().
109:
1.139 matthew 110: =item %Views
111:
112: Hash which associates an output view description with the function
113: that produces it. Adding a new view type should be as easy as
114: adding a line to the definition of this hash and making sure the function
115: takes the proper parameters.
116:
1.155 matthew 117: =item $bodytag
118:
119: LON-CAPA standard body tag, gotten from &Apache::lonnet::bodytag.
120: No title, no table, just a <body> tag.
121:
1.121 matthew 122: =back
123:
124: =cut
125:
126: ######################################################################
127: ######################################################################
128:
1.98 harris41 129: # -- dynamically rendered interface components
130: my $importbutton; # button to take the selected results and go to group sorting
131:
132: # -- miscellaneous variables
1.142 matthew 133: my %groupsearch_db; # database hash
1.127 matthew 134: my $diropendb = ""; # db file
1.139 matthew 135: # View Description Function Pointer
136: my %Views = ("Detailed Citation View" => \&detailed_citation_view,
137: "Summary View" => \&summary_view,
138: "Fielded Format" => \&fielded_format_view,
1.150 matthew 139: "XML/SGML" => \&xml_sgml_view,
140: "Compact View" => \&compact_view);
1.145 matthew 141: my %persistent_db;
142: my $hidden_fields;
1.155 matthew 143: my $bodytag;
144:
1.169 www 145: #
146: # For course search
147: #
1.167 www 148: my %alreadyseen;
149: my $hashtied;
150: my %hash;
1.169 www 151: my $totalfound;
1.167 www 152:
1.121 matthew 153: ######################################################################
154: ######################################################################
155:
156: =pod
157:
158: =item &handler() - main handler invoked by httpd child
159:
1.124 matthew 160: =item Variables
161:
162: =over 4
163:
164: =item $hidden
165:
166: holds 'hidden' html forms
167:
168: =item $scrout
169:
170: string that holds portions of the screen output
171:
172: =back
173:
1.121 matthew 174: =cut
1.101 harris41 175:
1.121 matthew 176: ######################################################################
177: ######################################################################
1.98 harris41 178: sub handler {
179: my $r = shift;
1.145 matthew 180: #
1.157 www 181:
182: my $loaderror=&Apache::lonnet::overloaderror($r);
183: if ($loaderror) { return $loaderror; }
184:
1.145 matthew 185: my $closebutton; # button that closes the search window
186: # This button is different for the RAT compared to
187: # normal invocation.
188: #
1.98 harris41 189: $r->content_type('text/html');
190: $r->send_http_header;
191: return OK if $r->header_only;
1.156 matthew 192: ##
193: ## Prevent caching of the search interface window. Hopefully this means
194: ## we will get the launch=1 passed in a little more.
195: &Apache::loncommon::no_cache($r);
1.145 matthew 196: ##
197: ## Pick up form fields passed in the links.
198: ##
199: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.146 matthew 200: ['catalogmode','launch','acts','mode','form','element','pause',
1.158 matthew 201: 'phase','persistent_db_id','table','start','show',
202: 'cleargroupsort']);
1.146 matthew 203: ##
204: ## The following is a trick - we wait a few seconds if asked to so
205: ## the daemon running the search can get ahead of the daemon
206: ## printing the results. We only need (theoretically) to do
207: ## this once, so the pause indicator is deleted
208: ##
209: if (exists($ENV{'form.pause'})) {
1.181 matthew 210: sleep(1);
1.146 matthew 211: delete($ENV{'form.pause'});
212: }
1.143 matthew 213: ##
214: ## Initialize global variables
215: ##
1.121 matthew 216: my $domain = $r->dir_config('lonDefDomain');
1.177 albertel 217: $diropendb= "/home/httpd/perl/tmp/$ENV{'user.domain'}_$ENV{'user.name'}_searchcat.db";
1.145 matthew 218: #
219: # set the name of the persistent database
1.146 matthew 220: # $ENV{'form.persistent_db_id'} can only have digits in it.
1.145 matthew 221: if (! exists($ENV{'form.persistent_db_id'}) ||
1.147 matthew 222: ($ENV{'form.persistent_db_id'} =~ /\D/) ||
223: ($ENV{'form.launch'} eq '1')) {
1.145 matthew 224: $ENV{'form.persistent_db_id'} = time;
225: }
1.155 matthew 226: $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.146 matthew 227: my $persistent_db_file = "/home/httpd/perl/tmp/".
1.145 matthew 228: &Apache::lonnet::escape($domain).
229: '_'.&Apache::lonnet::escape($ENV{'user.name'}).
230: '_'.$ENV{'form.persistent_db_id'}.'_persistent_search.db';
1.146 matthew 231: ##
1.152 matthew 232: if (! &get_persistent_form_data($persistent_db_file)) {
1.150 matthew 233: if ($ENV{'form.phase'} =~ /(run_search|results)/) {
234: &Apache::lonnet::logthis("lonsearchcat:Unable to recover data ".
235: "from $persistent_db_file");
236: $r->print(<<END);
237: <html>
238: <head><title>LON-CAPA Search Error</title></head>
1.155 matthew 239: $bodytag
1.150 matthew 240: We were unable to retrieve data describing your search. This is a serious
241: error and has been logged. Please alert your LON-CAPA administrator.
242: </body>
243: </html>
244: END
245: return OK;
246: }
1.147 matthew 247: }
1.124 matthew 248: ##
1.143 matthew 249: ## Clear out old values from groupsearch database
1.124 matthew 250: ##
1.146 matthew 251: untie %groupsearch_db if (tied(%groupsearch_db));
1.158 matthew 252: if (($ENV{'form.cleargroupsort'} eq '1') ||
253: (($ENV{'form.launch'} eq '1') &&
254: ($ENV{'form.catalogmode'} eq 'groupsearch'))) {
1.148 matthew 255: if (tie(%groupsearch_db,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
1.101 harris41 256: &start_fresh_session();
1.142 matthew 257: untie %groupsearch_db;
1.158 matthew 258: delete($ENV{'form.cleargroupsort'});
1.122 matthew 259: } else {
1.155 matthew 260: # This is a stupid error to give to the user.
261: # It really tells them nothing.
262: $r->print('<html><head></head>'.$bodytag.
263: 'Unable to tie hash to db file</body></html>');
1.101 harris41 264: return OK;
265: }
266: }
1.124 matthew 267: ##
1.150 matthew 268: ## Configure hidden fields
1.124 matthew 269: ##
1.145 matthew 270: $hidden_fields = '<input type="hidden" name="persistent_db_id" value="'.
1.150 matthew 271: $ENV{'form.persistent_db_id'}.'" />'."\n";
272: if (exists($ENV{'form.catalogmode'})) {
273: $hidden_fields .= '<input type="hidden" name="catalogmode" value="'.
274: $ENV{'form.catalogmode'}.'" />'."\n";
275: }
276: if (exists($ENV{'form.form'})) {
277: $hidden_fields .= '<input type="hidden" name="form" value="'.
278: $ENV{'form.form'}.'" />'."\n";
279: }
280: if (exists($ENV{'form.element'})) {
281: $hidden_fields .= '<input type="hidden" name="element" value="'.
282: $ENV{'form.element'}.'" />'."\n";
283: }
284: if (exists($ENV{'form.mode'})) {
285: $hidden_fields .= '<input type="hidden" name="mode" value="'.
286: $ENV{'form.mode'}.'" />'."\n";
287: }
288: ##
289: ## Configure dynamic components of interface
1.146 matthew 290: ##
1.98 harris41 291: if ($ENV{'form.catalogmode'} eq 'interactive') {
1.150 matthew 292: $closebutton="<input type='button' name='close' value='CLOSE' ";
293: if ($ENV{'form.phase'} =~ /(results|run_search)/) {
294: $closebutton .="onClick='parent.close()'";
295: } else {
296: $closebutton .="onClick='self.close()'";
297: }
298: $closebutton .=">\n";
1.124 matthew 299: } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
1.150 matthew 300: $closebutton="<input type='button' name='close' value='CLOSE' ";
301: if ($ENV{'form.phase'} =~ /(results|run_search)/) {
302: $closebutton .="onClick='parent.close()'";
303: } else {
304: $closebutton .="onClick='self.close()'";
305: }
306: $closebutton .= ">";
1.98 harris41 307: $importbutton=<<END;
308: <input type='button' name='import' value='IMPORT'
309: onClick='javascript:select_group()'>
310: END
1.146 matthew 311: } else {
312: $closebutton = '';
313: $importbutton = '';
1.98 harris41 314: }
1.124 matthew 315: ##
1.146 matthew 316: ## Sanity checks on form elements
1.124 matthew 317: ##
1.146 matthew 318: if (!defined($ENV{'form.viewselect'})) {
1.150 matthew 319: if (($ENV{'form.catalogmode'} eq 'groupsearch') ||
320: ($ENV{'form.catalogmode'} eq 'interactive')) {
321: $ENV{'form.viewselect'} ="Compact View";
322: } else {
323: $ENV{'form.viewselect'} ="Detailed Citation View";
324: }
1.146 matthew 325: }
1.149 matthew 326: $ENV{'form.phase'} = 'disp_basic' if (! exists($ENV{'form.phase'}));
1.151 matthew 327: $ENV{'form.show'} = 20 if (! exists($ENV{'form.show'}));
1.146 matthew 328: ##
329: ## Switch on the phase
330: ##
331: if ($ENV{'form.phase'} eq 'disp_basic') {
332: &print_basic_search_form($r,$closebutton);
333: } elsif ($ENV{'form.phase'} eq 'disp_adv') {
334: &print_advanced_search_form($r,$closebutton);
335: } elsif ($ENV{'form.phase'} eq 'results') {
336: &display_results($r,$importbutton,$closebutton);
1.151 matthew 337: } elsif ($ENV{'form.phase'} =~ /^(sort|run_search)$/) {
1.146 matthew 338: my ($query,$customquery,$customshow,$libraries,$pretty_string) =
339: &get_persistent_data($persistent_db_file,
340: ['query','customquery','customshow',
341: 'libraries','pretty_string']);
1.151 matthew 342: if ($ENV{'form.phase'} eq 'sort') {
343: &print_sort_form($r,$pretty_string);
344: } elsif ($ENV{'form.phase'} eq 'run_search') {
345: &run_search($r,$query,$customquery,$customshow,
346: $libraries,$pretty_string);
347: }
1.167 www 348: } elsif ($ENV{'form.phase'} eq 'course_search') {
349: &course_search($r);
1.146 matthew 350: } elsif(($ENV{'form.phase'} eq 'basic_search') ||
351: ($ENV{'form.phase'} eq 'adv_search')) {
1.151 matthew 352: $ENV{'form.searchmode'} = 'basic';
353: if ($ENV{'form.phase'} eq 'adv_search') {
354: $ENV{'form.searchmode'} = 'advanced';
355: }
1.146 matthew 356: # Set up table
357: if (! defined(&create_results_table())) {
1.147 matthew 358: $r->print(<<END);
359: <html><head><title>Search Error</title></head>
1.155 matthew 360: $bodytag
1.147 matthew 361: Unable to create table in which to store search results.
362: The search has been aborted.
363: </body>
364: </html>
365: END
366: return OK;
1.146 matthew 367: }
1.147 matthew 368: delete($ENV{'form.launch'});
1.146 matthew 369: if (! &make_form_data_persistent($r,$persistent_db_file)) {
1.147 matthew 370: $r->print(<<END);
371: <html><head><title>Search Error</title></head>
1.155 matthew 372: $bodytag
1.147 matthew 373: Unable to properly store search information. The search has been aborted.
374: </body>
375: </html>
376: END
377: return OK;
1.146 matthew 378: }
1.145 matthew 379: #
1.139 matthew 380: # We are running a search
1.134 matthew 381: my ($query,$customquery,$customshow,$libraries) =
382: (undef,undef,undef,undef);
1.143 matthew 383: my $pretty_string;
1.146 matthew 384: if ($ENV{'form.phase'} eq 'basic_search') {
1.180 matthew 385: ($query,$pretty_string,$libraries) =
386: &parse_basic_search($r,$closebutton);
1.146 matthew 387: } else { # Advanced search
1.143 matthew 388: ($query,$customquery,$customshow,$libraries,$pretty_string)
1.145 matthew 389: = &parse_advanced_search($r,$closebutton);
1.134 matthew 390: return OK if (! defined($query));
391: }
1.152 matthew 392: &make_persistent({ query => $query,
1.146 matthew 393: customquery => $customquery,
394: customshow => $customshow,
395: libraries => $libraries,
396: pretty_string => $pretty_string },
397: $persistent_db_file);
1.145 matthew 398: ##
1.146 matthew 399: ## Print out the frames interface
1.145 matthew 400: ##
1.146 matthew 401: &print_frames_interface($r);
1.124 matthew 402: }
403: return OK;
404: }
1.98 harris41 405:
1.124 matthew 406: ######################################################################
407: ######################################################################
408:
1.167 www 409: sub course_search {
410: my $r=shift;
411: my $bodytag=&Apache::loncommon::bodytag('Course Search');
412: my $pretty_search_string = '<b>'.$ENV{'form.courseexp'}.'</b>';
413: my $search_string = $ENV{'form.courseexp'};
414: my @New_Words;
415: if ($ENV{'form.crsrelated'}) {
416: ($search_string,@New_Words) = &related_version($ENV{'form.courseexp'});
417: if (@New_Words) {
418: $pretty_search_string .= " with related words: <b>@New_Words</b>.";
419: } else {
420: $pretty_search_string .= " with no related words.";
421: }
422: }
423: my $fulltext=$ENV{'form.crsfulltext'};
424: my @allwords=($search_string,@New_Words);
1.169 www 425: $totalfound=0;
1.167 www 426: $r->print('<html><head><title>LON-CAPA Course Search</title></head>'.
427: $bodytag.$pretty_search_string);
428: $r->rflush();
429: # ======================================================= Go through the course
430: $hashtied=0;
431: undef %alreadyseen;
432: %alreadyseen=();
1.169 www 433: my $c=$r->connection;
1.167 www 434: &tiehash();
435: foreach (keys %hash) {
1.169 www 436: if ($c->aborted()) { last; }
1.167 www 437: if (($_=~/^src\_(.+)$/) && (!$alreadyseen{$hash{$_}})) {
1.168 www 438: &checkonthis($r,$hash{$_},0,$hash{'title_'.$1},$fulltext,@allwords);
1.167 www 439: }
440: }
441: &untiehash();
1.169 www 442: unless ($totalfound) {
443: $r->print('<p>No resources found.</p>');
444: }
1.167 www 445: # =================================================== Done going through course
446: $r->print('</body></html>');
447: }
448:
449: # ---------------------------------------------------------------- tie the hash
450:
451: sub tiehash {
452: $hashtied=0;
453: if ($ENV{'request.course.fn'}) {
454: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.".db",
455: &GDBM_READER(),0640)) {
456: $hashtied=1;
457: }
458: }
459: }
460:
461: sub untiehash {
462: if ($hashtied) { untie %hash; }
463: $hashtied=0;
464: }
465:
466: # =============================== This pulls up a resource and its dependencies
467:
468: sub checkonthis {
1.168 www 469: my ($r,$url,$level,$title,$fulltext,@allwords)=@_;
1.167 www 470: $alreadyseen{$url}=1;
471: $r->rflush();
472: my $result=&Apache::lonnet::metadata($url,'title').' '.
473: &Apache::lonnet::metadata($url,'subject').' '.
474: &Apache::lonnet::metadata($url,'abstract').' '.
475: &Apache::lonnet::metadata($url,'keywords');
476: if (($url) && ($fulltext)) {
1.168 www 477: $result.=&Apache::lonnet::ssi_body($url);
1.167 www 478: }
479: $result=~s/\s+/ /gs;
480: my $applies=0;
481: foreach (@allwords) {
482: if ($_=~/\w/) {
483: if ($result=~/$_/si) {
484: $applies++;
485: }
486: }
487: }
488: # Does this resource apply?
489: if ($applies) {
490: $r->print('<br />');
491: for (my $i=0;$i<=$level*5;$i++) {
492: $r->print(' ');
493: }
494: $r->print('<a href="'.$url.'" target="cat">'.
1.169 www 495: ($title?$title:$url).'</a><br />');
496: $totalfound++;
497: } elsif ($fulltext) {
498: $r->print(' .');
1.167 www 499: }
1.169 www 500: $r->rflush();
1.167 www 501: # Check also the dependencies of this one
502: my $dependencies=
503: &Apache::lonnet::metadata($url,'dependencies');
504: foreach (split(/\,/,$dependencies)) {
505: if (($_=~/^\/res\//) && (!$alreadyseen{$_})) {
1.168 www 506: &checkonthis($r,$_,$level+1,'',$fulltext,@allwords);
1.167 www 507: }
508: }
509: }
510:
511: ######################################################################
512: ######################################################################
513:
1.124 matthew 514: =pod
515:
1.146 matthew 516: =item &print_basic_search_form()
1.124 matthew 517:
518: Returns a scalar which holds html for the basic search form.
519:
520: =cut
521:
522: ######################################################################
523: ######################################################################
1.3 harris41 524:
1.146 matthew 525: sub print_basic_search_form{
526: my ($r,$closebutton) = @_;
1.167 www 527: my $bodytag=&Apache::loncommon::bodytag('Search');
1.124 matthew 528: my $scrout=<<"ENDDOCUMENT";
529: <html>
530: <head>
531: <title>The LearningOnline Network with CAPA</title>
532: <script type="text/javascript">
533: function openhelp(val) {
534: openhelpwin=open('/adm/help/searchcat.html','helpscreen',
535: 'scrollbars=1,width=600,height=300');
536: openhelpwin.focus();
1.6 harris41 537: }
1.124 matthew 538: </script>
539: </head>
1.154 www 540: $bodytag
1.167 www 541: ENDDOCUMENT
542: if (&Apache::lonnet::allowed('bre',$ENV{'request.role.domain'})) {
543: $scrout.=(<<ENDDOCUMENT);
544: <h1>Catalog Search</h1>
1.124 matthew 545: <form method="post" action="/adm/searchcat">
1.146 matthew 546: <input type="hidden" name="phase" value="basic_search" />
1.145 matthew 547: $hidden_fields
1.124 matthew 548: <p>
1.131 matthew 549: Enter terms or phrases separated by AND, OR, or NOT
1.129 matthew 550: then press SEARCH below.
1.124 matthew 551: </p>
552: <p>
553: <table>
554: <tr><td>
555: ENDDOCUMENT
556: $scrout.=' '.&simpletextfield('basicexp',$ENV{'form.basicexp'},40).
557: ' ';
1.180 matthew 558: my $relatedcheckbox = &simplecheckbox('related',$ENV{'form.related'});
559: my $domain = $r->dir_config('lonDefDomain');
560: my $domaincheckbox = &simplecheckbox('domains',$domain,'checked');
1.139 matthew 561: $scrout.=<<END;
1.160 www 562: </td><td><a
563: href="/adm/searchcat?phase=disp_adv&catalogmode=$ENV{'form.catalogmode'}&launch=$ENV{'form.launch'}"
564: >Advanced Search</a></td></tr>
1.180 matthew 565: <tr><td>$relatedcheckbox use related words</td>
566: <td>$domaincheckbox only search domain <b>$domain</b></td></tr>
1.141 matthew 567: </table>
1.124 matthew 568: </p>
569: <p>
570: <input type="submit" name="basicsubmit" value='SEARCH' />
571: $closebutton
1.139 matthew 572: END
573: $scrout.=&selectbox(undef,'viewselect',
574: $ENV{'form.viewselect'},
575: undef,undef,undef,
576: sort(keys(%Views)));
1.151 matthew 577: $scrout.=&selectbox(undef,'show',
578: $ENV{'form.show'},
579: undef,undef,undef,
580: (10,20,50,100));
1.139 matthew 581: $scrout.=<<ENDDOCUMENT;
1.151 matthew 582: per page.
1.124 matthew 583: </p>
584: </form>
1.167 www 585: ENDDOCUMENT
1.180 matthew 586: }
587: if ($ENV{'request.course.id'}) {
588: $scrout.=(<<ENDCOURSESEARCH);
589: <hr />
1.167 www 590: <h1>Course Search</h1>
591: <form method="post" action="/adm/searchcat">
592: <input type="hidden" name="phase" value="course_search" />
593: $hidden_fields
594: <p>
595: Enter terms or phrases, then press SEARCH below.
596: </p>
597: <p>
598: <table>
599: <tr><td>
600: ENDCOURSESEARCH
1.180 matthew 601: $scrout.=' '.
602: &simpletextfield('courseexp',$ENV{'form.courseexp'},40);
603: my $crscheckbox =
604: &simplecheckbox('crsfulltext',$ENV{'form.crsfulltext'});
605: my $relcheckbox =
606: &simplecheckbox('crsrelated',$ENV{'form.crsrelated'});
607: $scrout.=(<<ENDENDCOURSE);
1.167 www 608: </td></tr>
609: <tr><td>$relcheckbox use related words</td><td></td></tr>
610: <tr><td>$crscheckbox fulltext search (time consuming)</td><td></td></tr>
611: </table><p>
612: <input type="submit" name="coursesubmit" value='SEARCH' />
613: </p>
614: ENDENDCOURSE
1.180 matthew 615: }
1.167 www 616: $scrout.=(<<ENDDOCUMENT);
1.124 matthew 617: </body>
618: </html>
619: ENDDOCUMENT
1.146 matthew 620: $r->print($scrout);
621: return;
1.124 matthew 622: }
623: ######################################################################
624: ######################################################################
625:
626: =pod
627:
628: =item &advanced_search_form()
629:
630: Returns a scalar which holds html for the advanced search form.
631:
632: =cut
633:
634: ######################################################################
635: ######################################################################
636:
1.146 matthew 637: sub print_advanced_search_form{
638: my ($r,$closebutton) = @_;
1.129 matthew 639: my $advanced_buttons = <<"END";
640: <p>
641: <input type="submit" name="advancedsubmit" value='SEARCH' />
642: <input type="reset" name="reset" value='RESET' />
643: $closebutton
644: <input type="button" value="HELP" onClick="openhelp()" />
645: </p>
646: END
1.139 matthew 647: if (!defined($ENV{'form.viewselect'})) {
648: $ENV{'form.viewselect'} ="Detailed Citation View";
649: }
1.154 www 650: my $bodytag=&Apache::loncommon::bodytag('Advanced Catalog Search');
1.124 matthew 651: my $scrout=<<"ENDHEADER";
652: <html>
653: <head>
654: <title>The LearningOnline Network with CAPA</title>
655: <script type="text/javascript">
656: function openhelp(val) {
657: openhelpwin=open('/adm/help/searchcat.html','helpscreen',
658: 'scrollbars=1,width=600,height=300');
659: openhelpwin.focus();
1.18 harris41 660: }
1.124 matthew 661: </script>
662: </head>
1.154 www 663: $bodytag
1.131 matthew 664: Enter terms or phrases separated by search operators
1.129 matthew 665: such as AND, OR, or NOT.<br />
1.130 matthew 666: <form method="post" action="/adm/searchcat">
1.129 matthew 667: $advanced_buttons
1.145 matthew 668: $hidden_fields
1.146 matthew 669: <input type="hidden" name="phase" value="adv_search" />
1.129 matthew 670: <table>
1.130 matthew 671: <tr><td><font color="#800000" face="helvetica"><b>VIEW:</b></font></td>
672: <td>
1.124 matthew 673: ENDHEADER
1.139 matthew 674: $scrout.=&selectbox(undef,'viewselect',
675: $ENV{'form.viewselect'},
676: undef,undef,undef,
677: sort(keys(%Views)));
1.151 matthew 678: $scrout.=' ';
679: $scrout.=&selectbox(undef,'show',
680: $ENV{'form.show'},
681: undef,undef,undef,
682: (10,20,50,100));
683: $scrout.=' '.
684: '<font color="#800000" face="helvetica">Per Page</font>';
1.142 matthew 685: $scrout.="</td><td>Related<br />Words</td></tr>\n";
686: $scrout.=&searchphrasefield_with_related('title', 'title' ,
687: $ENV{'form.title'});
1.135 matthew 688: $scrout.=&searchphrasefield('author', 'author' ,$ENV{'form.author'});
1.142 matthew 689: $scrout.=&searchphrasefield_with_related('subject', 'subject' ,
690: $ENV{'form.subject'});
691: $scrout.=&searchphrasefield_with_related('keywords','keywords',
692: $ENV{'form.keywords'});
1.135 matthew 693: $scrout.=&searchphrasefield('URL', 'url' ,$ENV{'form.url'});
1.142 matthew 694: $scrout.=&searchphrasefield_with_related('notes', 'notes' ,
695: $ENV{'form.notes'});
696: $scrout.=&searchphrasefield_with_related('abstract','abstract',
697: $ENV{'form.abstract'});
1.129 matthew 698: # Hack - an empty table row.
1.142 matthew 699: $scrout.="<tr><td> </td><td> </td><td> </td></tr>\n";
1.161 matthew 700: $scrout.=&searchphrasefield('file<br />extension','extension',
701: $ENV{'form.extension'});
1.142 matthew 702: $scrout.="<tr><td> </td><td> </td><td> </td></tr>\n";
1.129 matthew 703: $scrout.=&searchphrasefield('publisher<br />owner','owner',
704: $ENV{'form.owner'});
705: $scrout.="</table>\n";
1.161 matthew 706: $ENV{'form.category'}='any' if (! defined($ENV{'form.category'}));
1.132 matthew 707: $scrout.=&selectbox('File Category','category',
1.131 matthew 708: $ENV{'form.category'},
709: 'any','Any category',
710: undef,
711: (&Apache::loncommon::filecategories()));
1.11 harris41 712: $ENV{'form.language'}='any' unless length($ENV{'form.language'});
1.133 matthew 713: #----------------------------------------------------------------
1.132 matthew 714: # Allow restriction to multiple domains.
715: # I make the crazy assumption that there will never be a domain 'any'.
716: #
1.133 matthew 717: $ENV{'form.domains'} = 'any' if (! exists($ENV{'form.domains'}));
718: my @allowed_domains = (ref($ENV{'form.domains'}) ? @{$ENV{'form.domains'}}
719: : ($ENV{'form.domains'}) );
720: my %domain_hash = ();
721: foreach (@allowed_domains) {
722: $domain_hash{$_}++;
723: }
1.132 matthew 724: my @domains =&Apache::loncommon::get_domains();
725: # adjust the size of the select box
726: my $size = 4;
1.165 albertel 727: $size = (scalar @domains < ($size - 1) ? scalar @domains + 1 : $size);
1.145 matthew 728: $scrout.="\n".'<font color="#800000" face="helvetica"><b>'.
1.174 albertel 729: 'DOMAINS TO BE SEARCHED</b></font><br />'.
1.145 matthew 730: '<select name="domains" size="'.$size.'" multiple>'."\n".
731: '<option name="any" value="any" '.
732: ($domain_hash{'any'}? 'selected ' :'').
1.133 matthew 733: '>all domains</option>'."\n";
1.145 matthew 734: foreach my $dom (sort @domains) {
735: $scrout.="<option name=\"$dom\" ".
736: ($domain_hash{$dom} ? 'selected ' :'').">$dom</option>\n";
1.132 matthew 737: }
1.145 matthew 738: $scrout.="</select>\n";
1.133 matthew 739: #----------------------------------------------------------------
1.3 harris41 740: $scrout.=&selectbox('Limit by language','language',
1.111 harris41 741: $ENV{'form.language'},'any','Any Language',
1.166 albertel 742: \&Apache::loncommon::languagedescription,
1.111 harris41 743: (&Apache::loncommon::languageids),
744: );
1.8 harris41 745: # ------------------------------------------------ Compute date selection boxes
746: $scrout.=<<CREATIONDATESTART;
1.3 harris41 747: <p>
748: <font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
749: </font>
1.98 harris41 750: <br />
1.8 harris41 751: between:
752: CREATIONDATESTART
1.11 harris41 753: $scrout.=&dateboxes('creationdatestart',1,1,1976,
754: $ENV{'form.creationdatestart_month'},
755: $ENV{'form.creationdatestart_day'},
756: $ENV{'form.creationdatestart_year'},
757: );
1.124 matthew 758: $scrout.="and:\n";
1.11 harris41 759: $scrout.=&dateboxes('creationdateend',12,31,2051,
760: $ENV{'form.creationdateend_month'},
761: $ENV{'form.creationdateend_day'},
762: $ENV{'form.creationdateend_year'},
763: );
1.8 harris41 764: $scrout.="</p>";
765: $scrout.=<<LASTREVISIONDATESTART;
766: <p>
767: <font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
768: </b></font>
1.98 harris41 769: <br />between:
1.8 harris41 770: LASTREVISIONDATESTART
1.11 harris41 771: $scrout.=&dateboxes('lastrevisiondatestart',1,1,1976,
772: $ENV{'form.lastrevisiondatestart_month'},
773: $ENV{'form.lastrevisiondatestart_day'},
774: $ENV{'form.lastrevisiondatestart_year'},
775: );
1.8 harris41 776: $scrout.=<<LASTREVISIONDATEEND;
777: and:
778: LASTREVISIONDATEEND
1.11 harris41 779: $scrout.=&dateboxes('lastrevisiondateend',12,31,2051,
780: $ENV{'form.lastrevisiondateend_month'},
781: $ENV{'form.lastrevisiondateend_day'},
782: $ENV{'form.lastrevisiondateend_year'},
783: );
1.8 harris41 784: $scrout.='</p>';
1.11 harris41 785: $ENV{'form.copyright'}='any' unless length($ENV{'form.copyright'});
1.8 harris41 786: $scrout.=&selectbox('Limit by copyright/distribution','copyright',
1.111 harris41 787: $ENV{'form.copyright'},
788: 'any','Any copyright/distribution',
1.166 albertel 789: \&Apache::loncommon::copyrightdescription,
1.111 harris41 790: (&Apache::loncommon::copyrightids),
791: );
1.14 harris41 792: # ------------------------------------------- Compute customized metadata field
1.152 matthew 793: # $scrout.=<<CUSTOMMETADATA;
794: #<p>
795: #<font color="#800000" face="helvetica"><b>LIMIT BY SPECIAL METADATA FIELDS:</b>
796: #</font>
797: #For resource-specific metadata, enter in an expression in the form of
798: #<i>key</i>=<i>value</i> separated by operators such as AND, OR or NOT.<br />
799: #<b>Example:</b> grandmother=75 OR grandfather=85
800: #<br />
801: #CUSTOMMETADATA
802: # $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
803: # $scrout.=<<CUSTOMSHOW;
804: #<p>
805: #<font color="#800000" face="helvetica"><b>SHOW SPECIAL METADATA FIELDS:</b>
806: #</font>
807: #Enter in a space-separated list of special metadata fields to show
808: #in a fielded listing for each record result.
809: #<br />
810: #CUSTOMSHOW
811: # $scrout.=&simpletextfield('customshow',$ENV{'form.customshow'});
1.124 matthew 812: $scrout.=<<ENDDOCUMENT;
1.129 matthew 813: $advanced_buttons
1.8 harris41 814: </form>
815: </body>
816: </html>
817: ENDDOCUMENT
1.146 matthew 818: $r->print($scrout);
819: return;
1.124 matthew 820: }
1.8 harris41 821:
1.121 matthew 822: ######################################################################
823: ######################################################################
824:
825: =pod
826:
1.146 matthew 827: =item &get_persistent_form_data
1.145 matthew 828:
1.146 matthew 829: Inputs: filename of database
830:
831: Outputs: returns undef on database errors.
832:
833: This function is the reverse of &make_persistent() for form data.
1.145 matthew 834: Retrieve persistent data from %persistent_db. Retrieved items will have their
1.146 matthew 835: values unescaped. If a form value already exists in $ENV, it will not be
836: overwritten. Form values that are array references may have values appended
837: to them.
1.145 matthew 838:
839: =cut
840:
841: ######################################################################
842: ######################################################################
1.146 matthew 843: sub get_persistent_form_data {
844: my $filename = shift;
1.147 matthew 845: return 0 if (! -e $filename);
1.146 matthew 846: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
1.148 matthew 847: &GDBM_READER(),0640));
1.146 matthew 848: #
849: # These make sure we do not get array references printed out as 'values'.
1.161 matthew 850: my %arrays_allowed = ('form.domains'=>1);
1.146 matthew 851: #
852: # Loop through the keys, looking for 'form.'
853: foreach my $name (keys(%persistent_db)) {
854: next if ($name !~ /^form./);
1.182 ! matthew 855: # Kludgification begins!
! 856: if ($name eq 'form.domains' &&
! 857: $ENV{'form.searchmode'} eq 'basic' &&
! 858: $ENV{'form.phase'} ne 'disp_basic') {
! 859: next;
! 860: }
! 861: # End kludge (hopefully)
1.152 matthew 862: next if (exists($ENV{$name}));
1.146 matthew 863: my @values = map {
864: &Apache::lonnet::unescape($_);
865: } split(',',$persistent_db{$name});
866: next if (@values <1);
1.152 matthew 867: if ($arrays_allowed{$name}) {
868: $ENV{$name} = [@values];
1.146 matthew 869: } else {
1.152 matthew 870: $ENV{$name} = $values[0] if ($values[0]);
1.146 matthew 871: }
872: }
873: untie (%persistent_db);
874: return 1;
875: }
1.181 matthew 876:
1.146 matthew 877: ######################################################################
878: ######################################################################
879:
880: =pod
881:
882: =item &get_persistent_data
883:
884: Inputs: filename of database, ref to array of values to recover.
885:
886: Outputs: array of values. Returns undef on error.
887:
888: This function is the reverse of &make_persistent();
889: Retrieve persistent data from %persistent_db. Retrieved items will have their
890: values unescaped. If the item contains commas (before unescaping), the
891: returned value will be an array pointer.
892:
893: =cut
894:
895: ######################################################################
896: ######################################################################
897: sub get_persistent_data {
898: my $filename = shift;
899: my @Vars = @{shift()};
900: my @Values; # Return array
901: return undef if (! -e $filename);
902: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
1.148 matthew 903: &GDBM_READER(),0640));
1.146 matthew 904: foreach my $name (@Vars) {
905: if (! exists($persistent_db{$name})) {
906: push @Values, undef;
907: next;
908: }
909: my @values = map {
910: &Apache::lonnet::unescape($_);
911: } split(',',$persistent_db{$name});
1.152 matthew 912: if (@values <= 1) {
1.146 matthew 913: push @Values,$values[0];
1.145 matthew 914: } else {
1.146 matthew 915: push @Values,\@values;
1.145 matthew 916: }
917: }
1.146 matthew 918: untie (%persistent_db);
919: return @Values;
1.145 matthew 920: }
921:
922: ######################################################################
923: ######################################################################
924:
925: =pod
926:
1.121 matthew 927: =item &make_persistent()
928:
1.146 matthew 929: Inputs: Hash of values to save, filename of persistent database.
930:
931: Store variables away to the %persistent_db.
1.145 matthew 932: Values will be escaped. Values that are array pointers will have their
933: elements escaped and concatenated in a comma seperated string.
1.122 matthew 934:
1.121 matthew 935: =cut
936:
937: ######################################################################
938: ######################################################################
1.98 harris41 939: sub make_persistent {
1.133 matthew 940: my %save = %{shift()};
1.146 matthew 941: my $filename = shift;
942: return undef if (! tie(%persistent_db,'GDBM_File',
1.148 matthew 943: $filename,&GDBM_WRCREAT(),0640));
1.146 matthew 944: foreach my $name (keys(%save)) {
1.145 matthew 945: my @values = (ref($save{$name}) ? @{$save{$name}} : ($save{$name}));
946: # We handle array references, but not recursively.
947: my $store = join(',', map { &Apache::lonnet::escape($_); } @values );
948: $persistent_db{$name} = $store;
1.109 harris41 949: }
1.146 matthew 950: untie(%persistent_db);
951: return 1;
952: }
953:
954: ######################################################################
955: ######################################################################
956:
957: =pod
958:
959: =item &make_form_data_persistent()
960:
961: Inputs: filename of persistent database.
962:
963: Store most form variables away to the %persistent_db.
964: Values will be escaped. Values that are array pointers will have their
965: elements escaped and concatenated in a comma seperated string.
966:
967: =cut
968:
969: ######################################################################
970: ######################################################################
971: sub make_form_data_persistent {
972: my $r = shift;
973: my $filename = shift;
974: my %save;
975: foreach (keys(%ENV)) {
1.150 matthew 976: next if (!/^form/ || /submit/);
1.146 matthew 977: $save{$_} = $ENV{$_};
978: }
1.152 matthew 979: return &make_persistent(\%save,$filename);
1.98 harris41 980: }
981:
1.122 matthew 982: ######################################################################
1.142 matthew 983: # HTML form building functions #
1.122 matthew 984: ######################################################################
985:
986: =pod
987:
988: =item HTML form building functions
989:
990: =over 4
991:
1.142 matthew 992: =cut
993:
994: ###############################################
995: ###############################################
996:
997: =pod
998:
1.122 matthew 999: =item &simpletextfield()
1000:
1001: Inputs: $name,$value,$size
1002:
1003: Returns a text input field with the given name, value, and size.
1004: If size is not specified, a value of 20 is used.
1005:
1.142 matthew 1006: =cut
1007:
1008: ###############################################
1009: ###############################################
1010:
1011: sub simpletextfield {
1012: my ($name,$value,$size)=@_;
1013: $size = 20 if (! defined($size));
1014: return '<input type="text" name="'.$name.
1015: '" size="'.$size.'" value="'.$value.'" />';
1016: }
1017:
1018: ###############################################
1019: ###############################################
1020:
1021: =pod
1022:
1.122 matthew 1023: =item &simplecheckbox()
1024:
1025: Inputs: $name,$value
1026:
1027: Returns a simple check box with the given $name.
1028: If $value eq 'on' the box is checked.
1029:
1.142 matthew 1030: =cut
1031:
1032: ###############################################
1033: ###############################################
1.122 matthew 1034:
1.180 matthew 1035: sub simplecheckbox{
1036: my ($name,$value,$checked)=@_;
1037: $checked="checked" if ($value eq 'on');
1038: return '<input type="checkbox" name="'.$name.'" value="'.$value.'" '.
1039: $checked.' />';
1.142 matthew 1040: }
1.122 matthew 1041:
1.142 matthew 1042: ###############################################
1043: ###############################################
1.122 matthew 1044:
1.142 matthew 1045: =pod
1.122 matthew 1046:
1.142 matthew 1047: =item &fieldtitle()
1.126 matthew 1048:
1.142 matthew 1049: Input: $title
1.122 matthew 1050:
1.142 matthew 1051: Returns a scalar with html which will display $title as a search
1052: field heading.
1.129 matthew 1053:
1.142 matthew 1054: =cut
1.129 matthew 1055:
1.142 matthew 1056: ###############################################
1057: ###############################################
1.129 matthew 1058:
1.142 matthew 1059: sub fieldtitle {
1060: my $title = uc(shift());
1061: return '<font color="#800000" face="helvetica"><b>'.$title.
1062: ': </b></font>';
1063: }
1.129 matthew 1064:
1.142 matthew 1065: ###############################################
1066: ###############################################
1.129 matthew 1067:
1.142 matthew 1068: =pod
1.129 matthew 1069:
1.142 matthew 1070: =item &searchphrasefield()
1.129 matthew 1071:
1.142 matthew 1072: Inputs: $title,$name,$value
1.129 matthew 1073:
1.142 matthew 1074: Returns html for a title line and an input field for entering search terms.
1075: The entry field (which is where the $name and $value are used) is a 50 column
1076: simpletextfield. The html returned is for a row in a three column table.
1.129 matthew 1077:
1.142 matthew 1078: =cut
1.129 matthew 1079:
1.142 matthew 1080: ###############################################
1081: ###############################################
1082:
1083: sub searchphrasefield {
1084: my ($title,$name,$value)=@_;
1085: return '<tr><td>'.&fieldtitle($title).'</td><td>'.
1086: &simpletextfield($name,$value,50)."</td><td> </td></tr>\n";
1087: }
1.129 matthew 1088:
1.142 matthew 1089: ###############################################
1090: ###############################################
1.129 matthew 1091:
1.142 matthew 1092: =pod
1.129 matthew 1093:
1.142 matthew 1094: =item &searchphrasefield_with_related()
1.129 matthew 1095:
1.142 matthew 1096: Inputs: $title,$name,$value
1.129 matthew 1097:
1.142 matthew 1098: Returns html for a title line and an input field for entering search terms
1099: and a check box for 'related words'. The entry field (which is where the
1100: $name and $value are used) is a 50 column simpletextfield. The name of
1101: the related words checkbox is "$name_related".
1.129 matthew 1102:
1.142 matthew 1103: =cut
1.129 matthew 1104:
1.142 matthew 1105: ###############################################
1106: ###############################################
1107:
1108: sub searchphrasefield_with_related {
1109: my ($title,$name,$value)=@_;
1110: return '<tr><td>'.&fieldtitle($title).'</td><td>'.
1111: &simpletextfield($name,$value,50).'</td><td align="center"> '.
1112: &simplecheckbox($name.'_related',$ENV{'form.'.$name.'_related'}).
1113: " </td></tr>\n";
1114: }
1.126 matthew 1115:
1.142 matthew 1116: ###############################################
1117: ###############################################
1.122 matthew 1118:
1.142 matthew 1119: =pod
1.122 matthew 1120:
1.142 matthew 1121: =item &dateboxes()
1.8 harris41 1122:
1.142 matthew 1123: Returns html selection form elements for the specification of
1124: the day, month, and year.
1.11 harris41 1125:
1.142 matthew 1126: =cut
1.11 harris41 1127:
1.142 matthew 1128: ###############################################
1129: ###############################################
1.3 harris41 1130:
1.8 harris41 1131: sub dateboxes {
1.11 harris41 1132: my ($name,$defaultmonth,$defaultday,$defaultyear,
1133: $currentmonth,$currentday,$currentyear)=@_;
1134: ($defaultmonth,$defaultday,$defaultyear)=('','','');
1.117 matthew 1135: #
1136: # Day
1137: my $day=<<END;
1138: <select name="${name}_day">
1139: <option value='$defaultday'> </option>
1140: END
1141: for (my $i = 1; $i<=31; $i++) {
1142: $day.="<option value=\"$i\">$i</option>\n";
1143: }
1144: $day.="</select>\n";
1145: $day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday);
1146: #
1147: # Month
1.11 harris41 1148: my $month=<<END;
1.8 harris41 1149: <select name="${name}_month">
1.11 harris41 1150: <option value='$defaultmonth'> </option>
1151: END
1.117 matthew 1152: my $i = 1;
1153: foreach (qw/January February March April May June
1154: July August September October November December /){
1155: $month .="<option value=\"$i\">$_</option>\n";
1156: $i++;
1157: }
1158: $month.="</select>\n";
1.11 harris41 1159: $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);
1.117 matthew 1160: #
1161: # Year (obviously)
1.11 harris41 1162: my $year=<<END;
1.8 harris41 1163: <select name="${name}_year">
1.11 harris41 1164: <option value='$defaultyear'> </option>
1.3 harris41 1165: END
1.117 matthew 1166: my $maxyear = 2051;
1167: for (my $i = 1976; $i<=$maxyear; $i++) {
1168: $year.="<option value=\"$i\">$i</option>\n";
1169: }
1170: $year.="</select>\n";
1.11 harris41 1171: $year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear);
1172: return "$month$day$year";
1.3 harris41 1173: }
1174:
1.142 matthew 1175: ###############################################
1176: ###############################################
1177:
1178: =pod
1179:
1180: =item &selectbox()
1181:
1182: Returns a scalar containing an html <select> form.
1183:
1184: Inputs:
1185:
1186: =over 4
1187:
1188: =item $title
1189:
1190: Printed above the select box, in uppercase. If undefined, only a select
1191: box will be returned, with no additional html.
1192:
1193: =item $name
1194:
1195: The name element of the <select> tag.
1196:
1197: =item $default
1198:
1199: The default value of the form. Can be $anyvalue, or in @idlist.
1200:
1201: =item $anyvalue
1202:
1203: The <option value="..."> used to indicate a default of
1204: none of the values. Can be undef.
1205:
1206: =item $anytag
1207:
1208: The text associate with $anyvalue above.
1209:
1210: =item $functionref
1211:
1212: Each element in @idlist will be passed as a parameter
1213: to the function referenced here. The return value of the function should
1214: be a scalar description of the items. If this value is undefined the
1215: description of each item in @idlist will be the item name.
1216:
1217: =item @idlist
1218:
1219: The items to be selected from. One of these or $anyvalue will be the
1220: value returned by the form element, $ENV{form.$name}.
1221:
1222: =back
1223:
1224: =cut
1225:
1226: ###############################################
1227:
1.3 harris41 1228: sub selectbox {
1.129 matthew 1229: my ($title,$name,$default,$anyvalue,$anytag,$functionref,@idlist)=@_;
1230: if (! defined($functionref)) { $functionref = sub { $_[0]}; }
1.139 matthew 1231: my $selout='';
1232: if (defined($title)) {
1233: my $uctitle=uc($title);
1234: $selout="\n".'<p><font color="#800000" face="helvetica">'.
1235: '<b>'.$uctitle.': </b></font>';
1236: }
1237: $selout .= '<select name="'.$name.'">';
1238: unshift @idlist,$anyvalue if (defined($anyvalue));
1239: foreach (@idlist) {
1.122 matthew 1240: $selout.='<option value="'.$_.'"';
1.129 matthew 1241: if ($_ eq $default and !/^any$/) {
1.122 matthew 1242: $selout.=' selected >'.&{$functionref}($_).'</option>';
1.111 harris41 1243: }
1.129 matthew 1244: elsif ($_ eq $default and /^$anyvalue$/) {
1.122 matthew 1245: $selout.=' selected >'.$anytag.'</option>';
1.111 harris41 1246: }
1247: else {$selout.='>'.&{$functionref}($_).'</option>';}
1.109 harris41 1248: }
1.139 matthew 1249: return $selout.'</select>'.(defined($title)?'</p>':' ');
1.6 harris41 1250: }
1251:
1.122 matthew 1252: ######################################################################
1.142 matthew 1253: # End of HTML form building functions #
1254: ######################################################################
1255:
1256: =pod
1257:
1258: =back
1259:
1260: =cut
1261:
1262:
1263: ######################################################################
1.122 matthew 1264: ######################################################################
1265:
1266: =pod
1267:
1.134 matthew 1268: =item &parse_advanced_search()
1269:
1270: Parse advanced search form and return the following:
1271:
1272: =over 4
1273:
1274: =item $query Scalar containing an SQL query.
1.126 matthew 1275:
1.134 matthew 1276: =item $customquery Scalar containing a custom query.
1277:
1278: =item $customshow Scalar containing commands to show custom metadata.
1279:
1280: =item $libraries_to_query Reference to array of domains to search.
1281:
1282: =back
1.122 matthew 1283:
1284: =cut
1285:
1286: ######################################################################
1287: ######################################################################
1.134 matthew 1288: sub parse_advanced_search {
1.145 matthew 1289: my ($r,$closebutton)=@_;
1.32 harris41 1290: my $fillflag=0;
1.143 matthew 1291: my $pretty_search_string = "<br />\n";
1.64 harris41 1292: # Clean up fields for safety
1293: for my $field ('title','author','subject','keywords','url','version',
1294: 'creationdatestart_month','creationdatestart_day',
1295: 'creationdatestart_year','creationdateend_month',
1296: 'creationdateend_day','creationdateend_year',
1297: 'lastrevisiondatestart_month','lastrevisiondatestart_day',
1298: 'lastrevisiondatestart_year','lastrevisiondateend_month',
1299: 'lastrevisiondateend_day','lastrevisiondateend_year',
1.161 matthew 1300: 'notes','abstract','extension','language','owner',
1.131 matthew 1301: 'custommetadata','customshow','category') {
1.101 harris41 1302: $ENV{"form.$field"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1.64 harris41 1303: }
1.117 matthew 1304: foreach ('mode','form','element') {
1305: # is this required? Hmmm.
1306: next unless (exists($ENV{"form.$_"}));
1307: $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
1308: $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1309: }
1.131 matthew 1310: # Preprocess the category form element.
1.161 matthew 1311: $ENV{'form.category'} = 'any' if (! defined($ENV{'form.category'}) ||
1312: ref($ENV{'form.category'}));
1313: #
1.90 harris41 1314: # Check to see if enough information was filled in
1.32 harris41 1315: for my $field ('title','author','subject','keywords','url','version',
1.161 matthew 1316: 'notes','abstract','category','extension','language',
1317: 'owner','custommetadata') {
1.40 harris41 1318: if (&filled($ENV{"form.$field"})) {
1.32 harris41 1319: $fillflag++;
1320: }
1321: }
1322: unless ($fillflag) {
1.151 matthew 1323: &output_blank_field_error($r,$closebutton,'phase=disp_adv');
1.134 matthew 1324: return ;
1.32 harris41 1325: }
1.90 harris41 1326: # Turn the form input into a SQL-based query
1.39 harris41 1327: my $query='';
1.45 harris41 1328: my @queries;
1.143 matthew 1329: my $font = '<font color="#800000" face="helvetica">';
1.90 harris41 1330: # Evaluate logical expression AND/OR/NOT phrase fields.
1.58 harris41 1331: foreach my $field ('title','author','subject','notes','abstract','url',
1.161 matthew 1332: 'keywords','version','owner') {
1.44 harris41 1333: if ($ENV{'form.'.$field}) {
1.142 matthew 1334: my $searchphrase = $ENV{'form.'.$field};
1.143 matthew 1335: $pretty_search_string .= $font."$field</font> contains <b>".
1336: $searchphrase."</b>";
1.142 matthew 1337: if ($ENV{'form.'.$field.'_related'}) {
1.143 matthew 1338: my @New_Words;
1339: ($searchphrase,@New_Words) = &related_version($searchphrase);
1340: if (@New_Words) {
1341: $pretty_search_string .= " with related words: ".
1342: "<b>@New_Words</b>.";
1343: } else {
1344: $pretty_search_string .= " with no related words.";
1345: }
1.142 matthew 1346: }
1.143 matthew 1347: $pretty_search_string .= "<br />\n";
1.142 matthew 1348: push @queries,&build_SQL_query($field,$searchphrase);
1.131 matthew 1349: }
1.44 harris41 1350: }
1.161 matthew 1351: #
1352: # Make the 'mime' from 'form.category' and 'form.extension'
1353: #
1354: my $searchphrase;
1355: if (exists($ENV{'form.category'}) &&
1356: $ENV{'form.category'} !~ /^\s*$/ &&
1357: $ENV{'form.category'} ne 'any') {
1358: my @extensions = &Apache::loncommon::filecategorytypes
1359: ($ENV{'form.category'});
1360: if (scalar(@extensions) > 0) {
1361: $searchphrase = join(' OR ',@extensions);
1362: }
1363: }
1364: if (exists($ENV{'form.extension'}) && $ENV{'form.extension'} !~ /^\s*$/) {
1365: $searchphrase .= ' OR ' if (defined($searchphrase));
1366: my @extensions = split(/,/,$ENV{'form.extension'});
1367: $searchphrase .= join(' OR ',@extensions);
1368: }
1369: if (defined($searchphrase)) {
1370: push @queries,&build_SQL_query('mime',$searchphrase);
1371: $pretty_search_string .=$font.'mime</font> contains <b>'.
1372: $searchphrase.'</b><br />';
1.135 matthew 1373: }
1.161 matthew 1374: #####
1.90 harris41 1375: # Evaluate option lists
1.58 harris41 1376: if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
1.90 harris41 1377: push @queries,"(language like \"$ENV{'form.language'}\")";
1.143 matthew 1378: $pretty_search_string.=$font."language</font>= ".
1379: &Apache::loncommon::languagedescription($ENV{'form.language'}).
1380: "<br />\n";
1.58 harris41 1381: }
1382: if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
1.90 harris41 1383: push @queries,"(copyright like \"$ENV{'form.copyright'}\")";
1.143 matthew 1384: $pretty_search_string.=$font."copyright</font> = ".
1385: &Apache::loncommon::copyrightdescription($ENV{'form.copyright'}).
1386: "<br \>\n";
1.58 harris41 1387: }
1.143 matthew 1388: #
1.90 harris41 1389: # Evaluate date windows
1.60 harris41 1390: my $datequery=&build_date_queries(
1391: $ENV{'form.creationdatestart_month'},
1392: $ENV{'form.creationdatestart_day'},
1393: $ENV{'form.creationdatestart_year'},
1394: $ENV{'form.creationdateend_month'},
1395: $ENV{'form.creationdateend_day'},
1396: $ENV{'form.creationdateend_year'},
1397: $ENV{'form.lastrevisiondatestart_month'},
1398: $ENV{'form.lastrevisiondatestart_day'},
1399: $ENV{'form.lastrevisiondatestart_year'},
1400: $ENV{'form.lastrevisiondateend_month'},
1401: $ENV{'form.lastrevisiondateend_day'},
1402: $ENV{'form.lastrevisiondateend_year'},
1403: );
1.90 harris41 1404: # Test to see if date windows are legitimate
1.61 harris41 1405: if ($datequery=~/^Incorrect/) {
1.145 matthew 1406: &output_date_error($r,$datequery,$closebutton);
1.134 matthew 1407: return ;
1.143 matthew 1408: } elsif ($datequery) {
1409: # Here is where you would set up pretty_search_string to output
1410: # date query information.
1.60 harris41 1411: push @queries,$datequery;
1412: }
1.90 harris41 1413: # Process form information for custom metadata querying
1.134 matthew 1414: my $customquery=undef;
1.152 matthew 1415: # if ($ENV{'form.custommetadata'}) {
1416: # $pretty_search_string .=$font."Custom Metadata Search</font>: <b>".
1417: # $ENV{'form.custommetadata'}."</b><br />\n";
1418: # $customquery=&build_custommetadata_query('custommetadata',
1419: # $ENV{'form.custommetadata'});
1420: # }
1.134 matthew 1421: my $customshow=undef;
1.152 matthew 1422: # if ($ENV{'form.customshow'}) {
1423: # $pretty_search_string .=$font."Custom Metadata Display</font>: <b>".
1424: # $ENV{'form.customshow'}."</b><br />\n";
1425: # $customshow=$ENV{'form.customshow'};
1426: # $customshow=~s/[^\w\s]//g;
1427: # my @fields=split(/\s+/,$customshow);
1428: # $customshow=join(" ",@fields);
1429: # }
1.133 matthew 1430: ## ---------------------------------------------------------------
1.132 matthew 1431: ## Deal with restrictions to given domains
1432: ##
1.180 matthew 1433: my ($libraries_to_query,$pretty_domains_string) =
1434: &parse_domain_restrictions();
1435: $pretty_search_string .= $pretty_domains_string."<br />\n";
1436: #
1437: if (@queries) {
1438: $query=join(" AND ",@queries);
1439: $query="select * from metadata where $query";
1440: } elsif ($customquery) {
1441: $query = '';
1442: }
1443: return ($query,$customquery,$customshow,$libraries_to_query,
1444: $pretty_search_string);
1445: }
1446:
1447: sub parse_domain_restrictions {
1.132 matthew 1448: my $libraries_to_query = undef;
1449: # $ENV{'form.domains'} can be either a scalar or an array reference.
1450: # We need an array.
1.180 matthew 1451: if (! exists($ENV{'form.domains'})) {
1452: return (undef,'');
1453: }
1454: my @allowed_domains;
1455: if (ref($ENV{'form.domains'})) {
1456: @allowed_domains = @{$ENV{'form.domains'}};
1457: } else {
1458: @allowed_domains = ($ENV{'form.domains'});
1459: }
1.132 matthew 1460: my %domain_hash = ();
1.143 matthew 1461: my $pretty_domains_string;
1.132 matthew 1462: foreach (@allowed_domains) {
1463: $domain_hash{$_}++;
1464: }
1.143 matthew 1465: if ($domain_hash{'any'}) {
1.152 matthew 1466: $pretty_domains_string = "In all LON-CAPA domains.";
1.143 matthew 1467: } else {
1468: if (@allowed_domains > 1) {
1.152 matthew 1469: $pretty_domains_string = "In LON-CAPA domains:";
1.143 matthew 1470: } else {
1.152 matthew 1471: $pretty_domains_string = "In LON-CAPA domain ";
1.143 matthew 1472: }
1473: foreach (sort @allowed_domains) {
1.152 matthew 1474: $pretty_domains_string .= "<b>".$_."</b> ";
1.132 matthew 1475: }
1.143 matthew 1476: foreach (keys(%Apache::lonnet::libserv)) {
1477: if (exists($domain_hash{$Apache::lonnet::hostdom{$_}})) {
1478: push @$libraries_to_query,$_;
1479: }
1.132 matthew 1480: }
1481: }
1.180 matthew 1482: return ($libraries_to_query,$pretty_domains_string);
1.18 harris41 1483: }
1484:
1.122 matthew 1485: ######################################################################
1486: ######################################################################
1487:
1488: =pod
1489:
1.134 matthew 1490: =item &parse_basic_search()
1.122 matthew 1491:
1.134 matthew 1492: Parse the basic search form and return a scalar containing an sql query.
1.126 matthew 1493:
1.122 matthew 1494: =cut
1495:
1496: ######################################################################
1497: ######################################################################
1.134 matthew 1498: sub parse_basic_search {
1.145 matthew 1499: my ($r,$closebutton)=@_;
1.64 harris41 1500: # Clean up fields for safety
1501: for my $field ('basicexp') {
1502: $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;
1503: }
1.117 matthew 1504: foreach ('mode','form','element') {
1505: # is this required? Hmmm.
1506: next unless (exists($ENV{"form.$_"}));
1507: $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
1508: $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1509: }
1.180 matthew 1510: my ($libraries_to_query,$pretty_domains_string) =
1511: &parse_domain_restrictions();
1.90 harris41 1512: # Check to see if enough is filled in
1.26 harris41 1513: unless (&filled($ENV{'form.basicexp'})) {
1.151 matthew 1514: &output_blank_field_error($r,$closebutton,'phase=disp_basic');
1.24 harris41 1515: return OK;
1516: }
1.143 matthew 1517: my $pretty_search_string = '<b>'.$ENV{'form.basicexp'}.'</b>';
1.142 matthew 1518: my $search_string = $ENV{'form.basicexp'};
1.141 matthew 1519: if ($ENV{'form.related'}) {
1.143 matthew 1520: my @New_Words;
1521: ($search_string,@New_Words) = &related_version($ENV{'form.basicexp'});
1522: if (@New_Words) {
1523: $pretty_search_string .= " with related words: <b>@New_Words</b>.";
1524: } else {
1525: $pretty_search_string .= " with no related words.";
1526: }
1.141 matthew 1527: }
1.90 harris41 1528: # Build SQL query string based on form page
1.39 harris41 1529: my $query='';
1.178 matthew 1530: my $concatarg=join(',',
1.124 matthew 1531: ('title', 'author', 'subject', 'notes', 'abstract',
1532: 'keywords'));
1.95 harris41 1533: $concatarg='title' if $ENV{'form.titleonly'};
1.178 matthew 1534: $query=&build_SQL_query('concat_ws(" ",'.$concatarg.')',$search_string);
1.180 matthew 1535: if (defined($pretty_domains_string) && $pretty_domains_string ne '') {
1536: $pretty_search_string .= ' '.$pretty_domains_string;
1537: }
1.143 matthew 1538: $pretty_search_string .= "<br />\n";
1.180 matthew 1539: return ('SELECT * FROM metadata WHERE '.$query,$pretty_search_string,
1540: $libraries_to_query);
1.22 harris41 1541: }
1542:
1.122 matthew 1543:
1544: ######################################################################
1545: ######################################################################
1546:
1547: =pod
1548:
1.142 matthew 1549: =item &related_version
1550:
1551: Modifies an input string to include related words. Words in the string
1552: are replaced with parenthesized lists of 'OR'd words. For example
1553: "torque" is replaced with "(torque OR word1 OR word2 OR ...)".
1554:
1555: Note: Using this twice on a string is probably silly.
1556:
1557: =cut
1558:
1559: ######################################################################
1560: ######################################################################
1561: sub related_version {
1562: my $search_string = shift;
1563: my $result = $search_string;
1.143 matthew 1564: my %New_Words = ();
1.142 matthew 1565: while ($search_string =~ /(\w+)/cg) {
1566: my $word = $1;
1567: next if (lc($word) =~ /\b(or|and|not)\b/);
1568: my @Words = &Apache::loncommon::get_related_words($word);
1.143 matthew 1569: @Words = ($#Words>4? @Words[0..4] : @Words);
1570: foreach (@Words) { $New_Words{$_}++;}
1571: my $replacement = join " OR ", ($word,@Words);
1.142 matthew 1572: $result =~ s/(\b)$word(\b)/$1($replacement)$2/g;
1573: }
1.143 matthew 1574: return $result,sort(keys(%New_Words));
1.142 matthew 1575: }
1576:
1577: ######################################################################
1578: ######################################################################
1579:
1580: =pod
1581:
1.122 matthew 1582: =item &build_SQL_query()
1583:
1.126 matthew 1584: Builds a SQL query string from a logical expression with AND/OR keywords
1585: using Text::Query and &recursive_SQL_query_builder()
1586:
1.122 matthew 1587: =cut
1588:
1589: ######################################################################
1590: ######################################################################
1.98 harris41 1591: sub build_SQL_query {
1592: my ($field_name,$logic_statement)=@_;
1593: my $q=new Text::Query('abc',
1594: -parse => 'Text::Query::ParseAdvanced',
1595: -build => 'Text::Query::Build');
1596: $q->prepare($logic_statement);
1597: my $matchexp=${$q}{'matchexp'}; chomp $matchexp;
1598: my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);
1599: return $sql_query;
1600: }
1601:
1.122 matthew 1602: ######################################################################
1603: ######################################################################
1604:
1605: =pod
1606:
1607: =item &build_custommetadata_query()
1608:
1.126 matthew 1609: Constructs a custom metadata query using a rather heinous regular
1610: expression.
1611:
1.122 matthew 1612: =cut
1613:
1614: ######################################################################
1615: ######################################################################
1.98 harris41 1616: sub build_custommetadata_query {
1617: my ($field_name,$logic_statement)=@_;
1618: my $q=new Text::Query('abc',
1619: -parse => 'Text::Query::ParseAdvanced',
1620: -build => 'Text::Query::BuildAdvancedString');
1621: $q->prepare($logic_statement);
1622: my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
1623: # quick fix to change literal into xml tag-matching
1624: # will eventually have to write a separate builder module
1.122 matthew 1625: # wordone=wordtwo becomes\<wordone\>[^\<] *wordtwo[^\<]*\<\/wordone\>
1626: $matchexp =~ s/(\w+)\\=([\w\\\+]+)?# wordone=wordtwo is changed to
1627: /\\<$1\\>?# \<wordone\>
1628: \[\^\\<\]?# [^\<]
1629: \*$2\[\^\\<\]?# *wordtwo[^\<]
1630: \*\\<\\\/$1\\>?# *\<\/wordone\>
1631: /g;
1.98 harris41 1632: return $matchexp;
1633: }
1634:
1.122 matthew 1635: ######################################################################
1636: ######################################################################
1637:
1638: =pod
1639:
1640: =item &recursive_SQL_query_build()
1641:
1.126 matthew 1642: Recursively constructs an SQL query. Takes as input $dkey and $pattern.
1643:
1.122 matthew 1644: =cut
1645:
1646: ######################################################################
1647: ######################################################################
1.98 harris41 1648: sub recursive_SQL_query_build {
1649: my ($dkey,$pattern)=@_;
1650: my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
1651: return $pattern unless @matches;
1652: foreach my $match (@matches) {
1.173 matthew 1653: $match=~/\[ (\w+)\s(.*) \]/;
1654: my ($key,$value)=($1,$2);
1655: my $replacement='';
1656: if ($key eq 'literal') {
1.178 matthew 1657: $replacement="($dkey LIKE \"\%$value\%\")";
1658: } elsif (lc($key) eq 'not') {
1659: $value=~s/LIKE/NOT LIKE/;
1.173 matthew 1660: # $replacement="($dkey not like $value)";
1661: $replacement="$value";
1662: } elsif ($key eq 'and') {
1663: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
1664: $replacement="($1 AND $2)";
1665: } elsif ($key eq 'or') {
1666: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
1667: $replacement="($1 OR $2)";
1.98 harris41 1668: }
1669: substr($pattern,
1.173 matthew 1670: index($pattern,$match),
1671: length($match),
1672: $replacement);
1.98 harris41 1673: }
1674: &recursive_SQL_query_build($dkey,$pattern);
1675: }
1.22 harris41 1676:
1.122 matthew 1677: ######################################################################
1678: ######################################################################
1679:
1680: =pod
1681:
1682: =item &build_date_queries()
1683:
1.126 matthew 1684: Builds a SQL logic query to check time/date entries.
1685: Also reports errors (check for /^Incorrect/).
1686:
1.122 matthew 1687: =cut
1688:
1689: ######################################################################
1690: ######################################################################
1.98 harris41 1691: sub build_date_queries {
1692: my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,
1693: $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;
1694: my @queries;
1695: if ($cmonth1 or $cday1 or $cyear1 or $cmonth2 or $cday2 or $cyear2) {
1696: unless ($cmonth1 and $cday1 and $cyear1 and
1697: $cmonth2 and $cday2 and $cyear2) {
1698: return "Incorrect entry for the creation date. You must specify ".
1699: "a starting month, day, and year and an ending month, ".
1700: "day, and year.";
1701: }
1702: my $cnumeric1=sprintf("%d%2d%2d",$cyear1,$cmonth1,$cday1);
1703: $cnumeric1+=0;
1704: my $cnumeric2=sprintf("%d%2d%2d",$cyear2,$cmonth2,$cday2);
1705: $cnumeric2+=0;
1706: if ($cnumeric1>$cnumeric2) {
1707: return "Incorrect entry for the creation date. The starting ".
1708: "date must occur before the ending date.";
1709: }
1710: my $cquery="(creationdate BETWEEN '$cyear1-$cmonth1-$cday1' AND '".
1711: "$cyear2-$cmonth2-$cday2 23:59:59')";
1712: push @queries,$cquery;
1713: }
1714: if ($lmonth1 or $lday1 or $lyear1 or $lmonth2 or $lday2 or $lyear2) {
1715: unless ($lmonth1 and $lday1 and $lyear1 and
1716: $lmonth2 and $lday2 and $lyear2) {
1717: return "Incorrect entry for the last revision date. You must ".
1718: "specify a starting month, day, and year and an ending ".
1719: "month, day, and year.";
1720: }
1721: my $lnumeric1=sprintf("%d%2d%2d",$lyear1,$lmonth1,$lday1);
1722: $lnumeric1+=0;
1723: my $lnumeric2=sprintf("%d%2d%2d",$lyear2,$lmonth2,$lday2);
1724: $lnumeric2+=0;
1725: if ($lnumeric1>$lnumeric2) {
1726: return "Incorrect entry for the last revision date. The ".
1727: "starting date must occur before the ending date.";
1728: }
1729: my $lquery="(lastrevisiondate BETWEEN '$lyear1-$lmonth1-$lday1' AND '".
1730: "$lyear2-$lmonth2-$lday2 23:59:59')";
1731: push @queries,$lquery;
1732: }
1733: if (@queries) {
1734: return join(" AND ",@queries);
1735: }
1736: return '';
1.18 harris41 1737: }
1.6 harris41 1738:
1.122 matthew 1739: ######################################################################
1740: ######################################################################
1741:
1.144 matthew 1742: =pod
1743:
1744: =item ©right_check()
1745:
1746: =cut
1747:
1748: ######################################################################
1749: ######################################################################
1750: sub copyright_check {
1751: my $Metadata = shift;
1752: # Check copyright tags and skip results the user cannot use
1753: my (undef,undef,$resdom,$resname) = split('/',
1754: $Metadata->{'url'});
1755: # Check for priv
1756: if (($Metadata->{'copyright'} eq 'priv') &&
1757: (($ENV{'user.name'} ne $resname) &&
1758: ($ENV{'user.domain'} ne $resdom))) {
1759: return 0;
1760: }
1761: # Check for domain
1762: if (($Metadata->{'copyright'} eq 'domain') &&
1763: ($ENV{'user.domain'} ne $resdom)) {
1764: return 0;
1765: }
1766: return 1;
1767: }
1768:
1.151 matthew 1769:
1770: ######################################################################
1771: ######################################################################
1772:
1773: =pod
1774:
1775: =item &ensure_db_and_table
1776:
1777: Ensure we can get lonmysql to connect to the database and the table we
1778: need exists.
1779:
1780: Inputs: $r, table id
1781:
1782: Returns: undef on error, 1 if the table exists.
1783:
1784: =cut
1785:
1786: ######################################################################
1787: ######################################################################
1788: sub ensure_db_and_table {
1789: my ($r,$table) = @_;
1790: ##
1791: ## Sanity check the table id.
1792: ##
1793: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
1794: $r->print("Unable to retrieve search results. ".
1795: "Unable to determine the table results were stored in. ".
1796: "</body></html>");
1797: return undef;
1798: }
1799: ##
1800: ## Make sure we can connect and the table exists.
1801: ##
1802: my $connection_result = &Apache::lonmysql::connect_to_db();
1803: if (!defined($connection_result)) {
1804: $r->print("Unable to connect to the MySQL database where your results".
1805: " are stored. </body></html>");
1806: &Apache::lonnet::logthis("lonsearchcat: unable to get lonmysql to".
1807: " connect to database.");
1808: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
1809: return undef;
1810: }
1811: my $table_check = &Apache::lonmysql::check_table($table);
1812: if (! defined($table_check)) {
1813: $r->print("A MySQL error has occurred.</form></body></html>");
1814: &Apache::lonnet::logthis("lonmysql was unable to determine the status".
1815: " of table ".$table);
1816: return undef;
1817: } elsif (! $table_check) {
1818: $r->print("The table of results could not be found.");
1819: &Apache::lonnet::logthis("The user requested a table, ".$table.
1820: ", that could not be found.");
1821: return undef;
1822: }
1823: return 1;
1824: }
1825:
1826: ######################################################################
1827: ######################################################################
1828:
1829: =pod
1830:
1831: =item &print_sort_form
1832:
1833: =cut
1834:
1835: ######################################################################
1836: ######################################################################
1837: sub print_sort_form {
1838: my ($r,$pretty_query_string) = @_;
1839: ##
1840: my %SortableFields =
1841: (id => 'Default',
1842: title => 'Title',
1843: author => 'Author',
1844: subject => 'Subject',
1845: url => 'URL',
1846: version => 'Version Number',
1847: mime => 'Mime type',
1848: lang => 'Language',
1849: owner => 'Owner/Publisher',
1850: copyright => 'Copyright',
1851: hostname => 'Host',
1852: creationdate => 'Creation Date',
1853: lastrevisiondate => 'Revision Date',
1854: );
1855: ##
1856: my $table = $ENV{'form.table'};
1857: return if (! &ensure_db_and_table($r,$table));
1858: ##
1859: ## Get the number of results
1860: ##
1861: my $total_results = &Apache::lonmysql::number_of_rows($table);
1862: if (! defined($total_results)) {
1863: $r->print("A MySQL error has occurred.</form></body></html>");
1864: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
1865: " of rows in table ".$table);
1866: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
1867: return;
1868: }
1869: my $result;
1870: $result.=<<END;
1871: <html>
1872: <head>
1873: <script>
1874: function change_sort() {
1875: var newloc = "/adm/searchcat?phase=results";
1876: newloc += "&persistent_db_id=$ENV{'form.persistent_db_id'}";
1877: newloc += "&sortby=";
1878: newloc += document.forms.statusform.elements.sortby.value;
1879: parent.resultsframe.location= newloc;
1880: }
1881: </script>
1882: <title>Results</title>
1883: </head>
1.155 matthew 1884: $bodytag
1.151 matthew 1885: <form name="statusform" action="" method="post">
1.153 matthew 1886: <input type="hidden" name="Queue" value="" />
1.151 matthew 1887: END
1888:
1889: #<h2>Sort Results</h2>
1890: #Sort by: <select size="1" name="sortby" onchange="javascript:change_sort();">
1891: # $ENV{'form.sortby'} = 'id' if (! defined($ENV{'form.sortby'}));
1892: # foreach (keys(%SortableFields)) {
1893: # $result.="<option name=\"$_\"";
1894: # if ($_ eq $ENV{'form.sortby'}) {
1895: # $result.=" selected ";
1896: # }
1897: # $result.=" >$SortableFields{$_}</option>\n";
1898: # }
1899: # $result.="</select>\n";
1900: my $revise = &revise_button();
1901: $result.=<<END;
1902: <p>
1903: There are $total_results matches to your query. $revise
1904: </p><p>
1905: Search:$pretty_query_string
1906: </p>
1907: </form>
1908: </body>
1909: </html>
1910: END
1911: $r->print($result);
1912: return;
1913: }
1914:
1.144 matthew 1915: #####################################################################
1916: #####################################################################
1917:
1918: =pod
1919:
1920: =item MySQL Table Description
1921:
1922: MySQL table creation requires a precise description of the data to be
1923: stored. The use of the correct types to hold data is vital to efficient
1924: storage and quick retrieval of records. The columns must be described in
1925: the following format:
1926:
1927: =cut
1928:
1.170 matthew 1929: #####################################################################
1930: #####################################################################
1931:
1932: my @Datatypes =
1933: ( { name => 'id',
1934: type => 'MEDIUMINT',
1935: restrictions => 'UNSIGNED NOT NULL',
1936: primary_key => 'yes',
1937: auto_inc => 'yes' },
1938: { name => 'title', type=>'TEXT'},
1939: { name => 'author', type=>'TEXT'},
1940: { name => 'subject', type=>'TEXT'},
1941: { name => 'url', type=>'TEXT', restrictions => 'NOT NULL' },
1942: { name => 'keywords', type=>'TEXT'},
1943: { name => 'version', type=>'TEXT'},
1944: { name => 'notes', type=>'TEXT'},
1945: { name => 'abstract', type=>'TEXT'},
1946: { name => 'mime', type=>'TEXT'},
1947: { name => 'lang', type=>'TEXT'},
1948: { name => 'owner', type=>'TEXT'},
1949: { name => 'copyright', type=>'TEXT'},
1950: { name => 'hostname', type=>'TEXT'},
1.144 matthew 1951: #--------------------------------------------------
1.170 matthew 1952: { name => 'creationdate', type=>'DATETIME'},
1953: { name => 'lastrevisiondate', type=>'DATETIME'},
1.144 matthew 1954: #--------------------------------------------------
1955: );
1956:
1.147 matthew 1957: my @Fullindicies =
1.151 matthew 1958: qw/title/;
1959: # qw/title author subject abstract mime language owner copyright/;
1.147 matthew 1960:
1.144 matthew 1961: ######################################################################
1962: ######################################################################
1963:
1964: =pod
1965:
1.146 matthew 1966: =item &create_results_table()
1967:
1968: Creates the table of search results by calling lonmysql. Stores the
1969: table id in $ENV{'form.table'}
1970:
1971: Inputs: none.
1972:
1973: Returns: the identifier of the table on success, undef on error.
1974:
1975: =cut
1976:
1977: ######################################################################
1978: ######################################################################
1979: sub create_results_table {
1980: my $table = &Apache::lonmysql::create_table
1.170 matthew 1981: ( { columns => \@Datatypes,
1.172 matthew 1982: FULLTEXT => [{'columns' => \@Fullindicies},],
1.146 matthew 1983: } );
1984: if (defined($table)) {
1985: $ENV{'form.table'} = $table;
1986: return $table;
1987: }
1988: return undef; # Error...
1989: }
1.148 matthew 1990:
1.146 matthew 1991: ######################################################################
1992: ######################################################################
1993:
1994: =pod
1995:
1.150 matthew 1996: =item Search Status update functions
1.144 matthew 1997:
1.150 matthew 1998: Each of the following functions changes the values of one of the
1999: input fields used to display the search status to the user. The names
2000: should be explanatory.
1.144 matthew 2001:
1.150 matthew 2002: Inputs: Apache request handler ($r), text to display.
1.148 matthew 2003:
1.150 matthew 2004: Returns: Nothing.
1.148 matthew 2005:
2006: =over 4
2007:
2008: =item &update_count_status()
2009:
1.150 matthew 2010: =item &update_status()
1.148 matthew 2011:
1.150 matthew 2012: =item &update_seconds()
1.148 matthew 2013:
2014: =back
2015:
2016: =cut
2017:
2018: ######################################################################
2019: ######################################################################
2020: sub update_count_status {
2021: my ($r,$text) = @_;
2022: $text =~ s/\'/\\\'/g;
2023: $r->print
2024: ("<script>document.statusform.count.value = ' $text'</script>\n");
2025: $r->rflush();
2026: }
2027:
1.150 matthew 2028: sub update_status {
1.148 matthew 2029: my ($r,$text) = @_;
2030: $text =~ s/\'/\\\'/g;
2031: $r->print
1.150 matthew 2032: ("<script>document.statusform.status.value = ' $text'</script>\n");
1.148 matthew 2033: $r->rflush();
2034: }
2035:
1.150 matthew 2036: sub update_seconds {
1.148 matthew 2037: my ($r,$text) = @_;
2038: $text =~ s/\'/\\\'/g;
2039: $r->print
1.150 matthew 2040: ("<script>document.statusform.seconds.value = ' $text'</script>\n");
1.148 matthew 2041: $r->rflush();
2042: }
2043:
2044: ######################################################################
2045: ######################################################################
2046:
2047: =pod
2048:
1.151 matthew 2049: =item &revise_button
2050:
2051: Inputs: None
2052:
2053: Returns: html string for a 'revise search' button.
2054:
2055: =cut
2056:
2057: ######################################################################
2058: ######################################################################
2059: sub revise_button {
2060: my $revise_phase = 'disp_basic';
2061: $revise_phase = 'disp_adv' if ($ENV{'form.searchmode'} eq 'advanced');
2062: my $newloc = '/adm/searchcat'.
2063: '?persistent_db_id='.$ENV{'form.persistent_db_id'}.
1.158 matthew 2064: '&cleargroupsort=1'.
1.151 matthew 2065: '&phase='.$revise_phase;
2066: my $result = qq{<input type="button" value="Revise search" name="revise"} .
2067: qq{ onClick="parent.location='$newloc';" /> };
2068: return $result;
2069: }
2070:
2071: ######################################################################
2072: ######################################################################
2073:
2074: =pod
2075:
1.144 matthew 2076: =item &run_search
2077:
2078: =cut
2079:
2080: ######################################################################
2081: ######################################################################
2082: sub run_search {
1.146 matthew 2083: my ($r,$query,$customquery,$customshow,$serverlist,$pretty_string) = @_;
1.150 matthew 2084: my $connection = $r->connection;
1.144 matthew 2085: #
1.145 matthew 2086: # Timing variables
2087: #
2088: my $starttime = time;
1.151 matthew 2089: my $max_time = 30; # seconds for the search to complete
1.145 matthew 2090: #
1.146 matthew 2091: # Print run_search header
2092: #
1.151 matthew 2093: $r->print(<<END);
2094: <html>
2095: <head><title>Search Status</title></head>
1.155 matthew 2096: $bodytag
1.151 matthew 2097: <form name="statusform" action="" method="post">
2098: <input type="hidden" name="Queue" value="" />
2099: END
2100: # Check to see if $pretty_string has more than one carriage return.
2101: # Assume \n s are following <br /> s and truncate the value.
2102: # (there is probably a better way)...
1.152 matthew 2103: my @Lines = split /<br \/>/,$pretty_string;
2104: if (@Lines > 2) {
2105: $pretty_string = join '<br \>',(@Lines[0..2],'....<br />');
1.151 matthew 2106: }
2107: $r->print("Search: ".$pretty_string);
1.146 matthew 2108: $r->rflush();
2109: #
1.145 matthew 2110: # Determine the servers we need to contact.
2111: #
1.144 matthew 2112: my @Servers_to_contact;
2113: if (defined($serverlist)) {
1.152 matthew 2114: if (ref($serverlist) eq 'ARRAY') {
2115: @Servers_to_contact = @$serverlist;
2116: } else {
2117: @Servers_to_contact = ($serverlist);
2118: }
1.144 matthew 2119: } else {
2120: @Servers_to_contact = sort(keys(%Apache::lonnet::libserv));
2121: }
2122: my %Server_status;
1.146 matthew 2123: my $table =$ENV{'form.table'};
1.150 matthew 2124: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
1.147 matthew 2125: $r->print("Unable to determine table id to store search results in.".
1.148 matthew 2126: "The search has been aborted.</body></html>");
1.147 matthew 2127: return;
2128: }
2129: my $table_status = &Apache::lonmysql::check_table($table);
2130: if (! defined($table_status)) {
2131: $r->print("Unable to determine status of table.</body></html>");
2132: &Apache::lonnet::logthis("Bogus table id of $table for ".
2133: "$ENV{'user.name'} @ $ENV{'user.domain'}");
2134: &Apache::lonnet::logthis("lonmysql error = ".
1.144 matthew 2135: &Apache::lonmysql::get_error());
1.147 matthew 2136: return;
2137: }
2138: if (! $table_status) {
2139: $r->print("The table id,$table, we tried to use is invalid.".
1.148 matthew 2140: "The search has been aborted.</body></html>");
1.144 matthew 2141: return;
2142: }
1.145 matthew 2143: ##
1.146 matthew 2144: ## Prepare for the big loop.
2145: ##
1.144 matthew 2146: my $hitcountsum;
2147: my $server;
2148: my $status;
1.151 matthew 2149: my $revise = &revise_button();
1.148 matthew 2150: $r->print(<<END);
2151: <table>
1.151 matthew 2152: <tr><th>Status</th><th>Total Matches</th><th>Time Remaining</th><th></th></tr>
1.148 matthew 2153: <tr>
1.150 matthew 2154: <td><input type="text" name="status" value="" size="30" /></td>
2155: <td><input type="text" name="count" value="" size="10" /></td>
2156: <td><input type="text" name="seconds" value="" size="8" /></td>
1.151 matthew 2157: <td>$revise</td>
1.148 matthew 2158: </tr>
2159: </table>
2160: </form>
2161: END
2162: $r->rflush();
1.150 matthew 2163: my $time_remaining = $max_time - (time - $starttime) ;
2164: my $last_time = $time_remaining;
2165: &update_seconds($r,$time_remaining);
1.178 matthew 2166: &update_status($r,'contacting '.$Servers_to_contact[0]);
1.159 matthew 2167: while (($time_remaining > 0) &&
1.144 matthew 2168: ((@Servers_to_contact) || keys(%Server_status))) {
2169: # Send out a search request if it needs to be done.
2170: if (@Servers_to_contact) {
2171: # Contact one server
2172: my $server = shift(@Servers_to_contact);
2173: my $reply=&Apache::lonnet::metadata_query($query,$customquery,
2174: $customshow,[$server]);
2175: ($server) = keys(%$reply);
2176: $Server_status{$server} = $reply->{$server};
1.150 matthew 2177: &update_status($r,'contacting '.$server);
1.144 matthew 2178: } else {
1.150 matthew 2179: # wait a sec. to give time for files to be written
2180: # This sleep statement is here instead of outside the else
2181: # block because we do not want to pause if we have servers
2182: # left to contact.
2183: sleep(1);
1.144 matthew 2184: }
1.159 matthew 2185: #
2186: if (scalar (keys(%Server_status))) {
2187: &update_status($r,'waiting on '.(join(' ',keys(%Server_status))));
2188: }
2189: #
2190: # Loop through the servers we have contacted but do not
2191: # have results from yet, looking for results.
1.144 matthew 2192: while (my ($server,$status) = each(%Server_status)) {
1.150 matthew 2193: last if ($connection->aborted());
1.144 matthew 2194: if ($status eq 'con_lost') {
2195: delete ($Server_status{$server});
2196: next;
2197: }
2198: $status=~/^([\.\w]+)$/;
2199: my $datafile=$r->dir_config('lonDaemons').'/tmp/'.$1;
2200: if (-e $datafile && ! -e "$datafile.end") {
1.150 matthew 2201: &update_status($r,'Receiving results from '.$server);
1.144 matthew 2202: next;
2203: }
1.150 matthew 2204: last if ($connection->aborted());
1.144 matthew 2205: if (-e "$datafile.end") {
1.150 matthew 2206: &update_status($r,'Reading results from '.$server);
1.144 matthew 2207: if (-z "$datafile") {
2208: delete($Server_status{$server});
2209: next;
2210: }
2211: my $fh;
2212: if (!($fh=Apache::File->new($datafile))) {
1.146 matthew 2213: $r->print("Unable to open search results file for ".
1.145 matthew 2214: "server $server. Omitting from search");
1.150 matthew 2215: delete($Server_status{$server});
2216: next;
1.144 matthew 2217: }
2218: # Read in the whole file.
2219: while (my $result = <$fh>) {
1.150 matthew 2220: last if ($connection->aborted());
1.144 matthew 2221: # handle custom fields? Someday we will!
2222: chomp($result);
2223: next unless $result;
2224: # Parse the result.
2225: my %Fields = &parse_raw_result($result,$server);
2226: $Fields{'hostname'} = $server;
2227: next if (! ©right_check(\%Fields));
2228: # Store the result in the mysql database
2229: my $result = &Apache::lonmysql::store_row($table,\%Fields);
2230: if (! defined($result)) {
1.146 matthew 2231: $r->print(&Apache::lonmysql::get_error());
1.144 matthew 2232: }
1.146 matthew 2233: # $r->print(&Apache::lonmysql::get_debug());
1.144 matthew 2234: $hitcountsum ++;
1.150 matthew 2235: $time_remaining = $max_time - (time - $starttime) ;
2236: if ($last_time - $time_remaining > 0) {
2237: &update_seconds($r,$time_remaining);
2238: $last_time = $time_remaining;
2239: }
2240: if ($hitcountsum % 50 == 0) {
2241: &update_count_status($r,$hitcountsum);
2242: }
1.144 matthew 2243: } # End of foreach (@results)
2244: $fh->close();
2245: # $server is only deleted if the results file has been
2246: # found and (successfully) opened. This may be a bad idea.
2247: delete($Server_status{$server});
2248: }
1.150 matthew 2249: last if ($connection->aborted());
1.148 matthew 2250: &update_count_status($r,$hitcountsum);
1.144 matthew 2251: }
1.150 matthew 2252: last if ($connection->aborted());
1.144 matthew 2253: # Finished looping through the servers
1.159 matthew 2254: $starttime = time if (@Servers_to_contact);
1.150 matthew 2255: $time_remaining = $max_time - (time - $starttime) ;
2256: if ($last_time - $time_remaining > 0) {
2257: $last_time = $time_remaining;
2258: &update_seconds($r,$time_remaining);
2259: }
1.144 matthew 2260: }
1.150 matthew 2261: &update_status($r,'Search Complete'.$server);
1.151 matthew 2262: &update_seconds($r,0);
1.144 matthew 2263: &Apache::lonmysql::disconnect_from_db();
2264: # We have run out of time or run out of servers to talk to and
2265: # results to get.
1.146 matthew 2266: $r->print("</body></html>");
1.153 matthew 2267: if ($ENV{'form.catalogmode'} ne 'groupsearch') {
2268: $r->print("<script>".
2269: "window.location='/adm/searchcat?".
2270: "phase=sort&".
2271: "persistent_db_id=$ENV{'form.persistent_db_id'}';".
2272: "</script>");
2273: }
1.144 matthew 2274: return;
2275: }
2276:
2277: ######################################################################
2278: ######################################################################
2279: =pod
2280:
1.146 matthew 2281: =item &prev_next_buttons
1.144 matthew 2282:
2283: =cut
2284:
2285: ######################################################################
2286: ######################################################################
1.146 matthew 2287: sub prev_next_buttons {
1.145 matthew 2288: my ($current_min,$show,$total,$parms) = @_;
2289: return '' if ($show eq 'all'); # No links if you get them all at once.
2290: my $links;
2291: ##
2292: ## Prev
2293: my $prev_min = $current_min - $show;
1.151 matthew 2294: $prev_min = 1 if $prev_min < 1;
1.145 matthew 2295: if ($prev_min < $current_min) {
2296: $links .= qq{
1.146 matthew 2297: <a href="/adm/searchcat?$parms&start=$prev_min&show=$show">prev</a>
1.145 matthew 2298: };
1.146 matthew 2299: } else {
2300: $links .= 'prev';
1.145 matthew 2301: }
2302: ##
2303: ## Pages.... Someday.
2304: ##
1.146 matthew 2305: $links .= qq{
2306: <a href="/adm/searchcat?$parms&start=$current_min&$show=$show">reload</a>
2307: };
1.145 matthew 2308: ##
2309: ## Next
2310: my $next_min = $current_min + $show;
1.146 matthew 2311: $next_min = $current_min if ($next_min > $total);
1.145 matthew 2312: if ($next_min != $current_min) {
1.146 matthew 2313: $links .= qq{
2314: <a href="/adm/searchcat?$parms&start=$next_min&show=$show">next</a>
1.145 matthew 2315: };
1.146 matthew 2316: } else {
2317: $links .= ' next';
1.144 matthew 2318: }
1.145 matthew 2319: return $links;
1.144 matthew 2320: }
2321: ######################################################################
2322: ######################################################################
2323:
2324: =pod
2325:
2326: =item &display_results
2327:
2328: =cut
2329:
2330: ######################################################################
2331: ######################################################################
2332: sub display_results {
1.150 matthew 2333: my ($r,$importbutton,$closebutton) = @_;
2334: my $connection = $r->connection;
2335: $r->print(&search_results_header($importbutton,$closebutton));
1.144 matthew 2336: ##
2337: ## Set viewing function
2338: ##
2339: my $viewfunction = $Views{$ENV{'form.viewselect'}};
2340: if (!defined($viewfunction)) {
2341: $r->print("Internal Error - Bad view selected.\n");
2342: $r->rflush();
2343: return;
2344: }
2345: ##
1.158 matthew 2346: ## $checkbox_num is a count of the number of checkboxes output on the
2347: ## page this is used only during catalogmode=groupsearch.
2348: my $checkbox_num = 0;
2349: ##
1.144 matthew 2350: ## Get the catalog controls setup
2351: ##
1.146 matthew 2352: my $action = "/adm/searchcat?phase=results";
2353: ##
1.147 matthew 2354: ## Deal with groupsearch
1.146 matthew 2355: ##
2356: if ($ENV{'form.catalogmode'} eq 'groupsearch') {
2357: if (! tie(%groupsearch_db,'GDBM_File',$diropendb,
1.148 matthew 2358: &GDBM_WRCREAT(),0640)) {
1.150 matthew 2359: $r->print('Unable to store import results.</form></body></html>');
1.146 matthew 2360: $r->rflush();
2361: return;
2362: }
1.144 matthew 2363: }
1.145 matthew 2364: ##
2365: ## Prepare the table for querying
2366: ##
1.144 matthew 2367: my $table = $ENV{'form.table'};
1.151 matthew 2368: return if (! &ensure_db_and_table($r,$table));
1.145 matthew 2369: ##
2370: ## Get the number of results
2371: ##
2372: my $total_results = &Apache::lonmysql::number_of_rows($table);
2373: if (! defined($total_results)) {
1.150 matthew 2374: $r->print("A MySQL error has occurred.</form></body></html>");
1.145 matthew 2375: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
2376: " of rows in table ".$table);
2377: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
2378: return;
2379: }
2380: ##
2381: ## Determine how many results we need to get
2382: ##
1.151 matthew 2383: $ENV{'form.start'} = 1 if (! exists($ENV{'form.start'}));
2384: $ENV{'form.show'} = 'all' if (! exists($ENV{'form.show'}));
1.146 matthew 2385: my $min = $ENV{'form.start'};
1.145 matthew 2386: my $max;
2387: if ($ENV{'form.show'} eq 'all') {
2388: $max = $total_results ;
2389: } else {
1.151 matthew 2390: $max = $min + $ENV{'form.show'} - 1;
1.146 matthew 2391: $max = $total_results if ($max > $total_results);
1.145 matthew 2392: }
2393: ##
2394: ## Output links (if necessary) for 'prev' and 'next' pages.
2395: ##
1.146 matthew 2396: $r->print
1.148 matthew 2397: ('<center>'.
1.146 matthew 2398: &prev_next_buttons($min,$ENV{'form.show'},$total_results,
2399: "table=".$ENV{'form.table'}.
2400: "&phase=results".
2401: "&persistent_db_id=".$ENV{'form.persistent_db_id'})
1.148 matthew 2402: ."</center>\n"
1.146 matthew 2403: );
1.150 matthew 2404: if ($total_results == 0) {
1.181 matthew 2405: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="1">'.
2406: '<h3>There are currently no results.</h3>'.
1.150 matthew 2407: "</form></body></html>");
2408: return;
2409: } else {
2410: $r->print
2411: ("<center>Results $min to $max out of $total_results</center>\n");
2412: }
1.145 matthew 2413: ##
2414: ## Get results from MySQL table
2415: ##
2416: my @Results = &Apache::lonmysql::get_rows($table,
1.151 matthew 2417: 'id>='.$min.' AND id<='.$max);
1.145 matthew 2418: ##
2419: ## Loop through the results and output them.
2420: ##
1.144 matthew 2421: foreach my $row (@Results) {
1.150 matthew 2422: if ($connection->aborted()) {
1.162 www 2423: &cleanup();
1.150 matthew 2424: return;
2425: }
1.144 matthew 2426: my %Fields = %{&parse_row(@$row)};
1.145 matthew 2427: my $output="<p>\n";
1.158 matthew 2428: my $prefix=&catalogmode_output($Fields{'title'},$Fields{'url'},
2429: $Fields{'id'},$checkbox_num++);
1.144 matthew 2430: # Render the result into html
1.150 matthew 2431: $output.= &$viewfunction($prefix,%Fields);
1.145 matthew 2432: # Print them out as they come in.
1.144 matthew 2433: $r->print($output);
2434: $r->rflush();
2435: }
2436: if (@Results < 1) {
2437: $r->print("There were no results matching your query");
1.147 matthew 2438: } else {
2439: $r->print
1.148 matthew 2440: ('<center>'.
1.147 matthew 2441: &prev_next_buttons($min,$ENV{'form.show'},$total_results,
2442: "table=".$ENV{'form.table'}.
2443: "&phase=results".
2444: "&persistent_db_id=".
2445: $ENV{'form.persistent_db_id'})
1.148 matthew 2446: ."</center>\n"
1.147 matthew 2447: );
1.144 matthew 2448: }
1.150 matthew 2449: $r->print("</form></body></html>");
1.144 matthew 2450: $r->rflush();
1.150 matthew 2451: untie %groupsearch_db if (tied(%groupsearch_db));
1.144 matthew 2452: return;
2453: }
2454:
2455: ######################################################################
2456: ######################################################################
2457:
2458: =pod
2459:
1.158 matthew 2460: =item &catalogmode_output($title,$url,$fnum,$checkbox_num)
1.145 matthew 2461:
2462: Returns html needed for the various catalog modes. Gets inputs from
1.158 matthew 2463: $ENV{'form.catalogmode'}. Stores data in %groupsearch_db.
1.145 matthew 2464:
2465: =cut
2466:
2467: ######################################################################
2468: ######################################################################
2469: sub catalogmode_output {
2470: my $output = '';
1.158 matthew 2471: my ($title,$url,$fnum,$checkbox_num) = @_;
1.145 matthew 2472: if ($ENV{'form.catalogmode'} eq 'interactive') {
1.150 matthew 2473: $title=~ s/\'/\\\'/g;
1.145 matthew 2474: if ($ENV{'form.catalogmode'} eq 'interactive') {
2475: $output.=<<END
2476: <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
2477: onClick="javascript:select_data('$title','$url')">
2478: </font>
2479: END
2480: }
1.150 matthew 2481: } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
1.145 matthew 2482: $groupsearch_db{"pre_${fnum}_link"}=$url;
2483: $groupsearch_db{"pre_${fnum}_title"}=$title;
2484: $output.=<<END;
2485: <font size='-1'>
2486: <input type="checkbox" name="returnvalues" value="SELECT"
1.158 matthew 2487: onClick="javascript:queue($checkbox_num,$fnum)" />
1.145 matthew 2488: </font>
2489: END
2490: }
2491: return $output;
2492: }
2493: ######################################################################
2494: ######################################################################
2495:
2496: =pod
2497:
1.144 matthew 2498: =item &parse_row
2499:
2500: Parse a row returned from the database.
2501:
2502: =cut
2503:
2504: ######################################################################
2505: ######################################################################
2506: sub parse_row {
2507: my @Row = @_;
2508: my %Fields;
2509: for (my $i=0;$i<=$#Row;$i++) {
1.170 matthew 2510: $Fields{$Datatypes[$i]->{'name'}}=&Apache::lonnet::unescape($Row[$i]);
1.144 matthew 2511: }
2512: $Fields{'language'} =
2513: &Apache::loncommon::languagedescription($Fields{'lang'});
2514: $Fields{'copyrighttag'} =
2515: &Apache::loncommon::copyrightdescription($Fields{'copyright'});
2516: $Fields{'mimetag'} =
2517: &Apache::loncommon::filedescription($Fields{'mime'});
2518: return \%Fields;
2519: }
1.126 matthew 2520:
2521: ###########################################################
2522: ###########################################################
2523:
2524: =pod
2525:
2526: =item &parse_raw_result()
2527:
2528: Takes a line from the file of results and parse it. Returns a hash
2529: with keys for the following fields:
2530: 'title', 'author', 'subject', 'url', 'keywords', 'version', 'notes',
2531: 'abstract', 'mime', 'lang', 'owner', 'copyright', 'creationdate',
2532: 'lastrevisiondate'.
2533:
2534: In addition, the following tags are set by calling the appropriate
2535: lonnet function: 'language', 'cprtag', 'mimetag'.
2536:
2537: The 'title' field is set to "Untitled" if the title field is blank.
2538:
2539: 'abstract' and 'keywords' are truncated to 200 characters.
2540:
2541: =cut
2542:
2543: ###########################################################
2544: ###########################################################
2545: sub parse_raw_result {
2546: my ($result,$hostname) = @_;
2547: # Check for a comma - if it is there then we do not need to unescape the
2548: # string. There seems to be some kind of problem with some items in
2549: # the database - the entire string gets sent out unescaped...?
2550: unless ($result =~ /,/) {
2551: $result = &Apache::lonnet::unescape($result);
2552: }
2553: my @fields=map {
2554: &Apache::lonnet::unescape($_);
2555: } (split(/\,/,$result));
2556: my ($title,$author,$subject,$url,$keywords,$version,
2557: $notes,$abstract,$mime,$lang,
2558: $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;
2559: my %Fields =
2560: ( title => &Apache::lonnet::unescape($title),
2561: author => &Apache::lonnet::unescape($author),
2562: subject => &Apache::lonnet::unescape($subject),
2563: url => &Apache::lonnet::unescape($url),
2564: keywords => &Apache::lonnet::unescape($keywords),
2565: version => &Apache::lonnet::unescape($version),
2566: notes => &Apache::lonnet::unescape($notes),
2567: abstract => &Apache::lonnet::unescape($abstract),
2568: mime => &Apache::lonnet::unescape($mime),
2569: lang => &Apache::lonnet::unescape($lang),
2570: owner => &Apache::lonnet::unescape($owner),
2571: copyright => &Apache::lonnet::unescape($copyright),
2572: creationdate => &Apache::lonnet::unescape($creationdate),
2573: lastrevisiondate => &Apache::lonnet::unescape($lastrevisiondate)
2574: );
2575: $Fields{'language'} =
2576: &Apache::loncommon::languagedescription($Fields{'lang'});
2577: $Fields{'copyrighttag'} =
2578: &Apache::loncommon::copyrightdescription($Fields{'copyright'});
2579: $Fields{'mimetag'} =
2580: &Apache::loncommon::filedescription($Fields{'mime'});
1.134 matthew 2581: if ($Fields{'author'}=~/^(\s*|error)$/) {
2582: $Fields{'author'}="Unknown Author";
2583: }
1.126 matthew 2584: # Put spaces in the keyword list, if needed.
2585: $Fields{'keywords'}=~ s/,([A-z])/, $1/g;
2586: if ($Fields{'title'}=~ /^\s*$/ ) {
2587: $Fields{'title'}='Untitled';
2588: }
2589: unless ($ENV{'user.adv'}) {
1.144 matthew 2590: # What is this anyway?
1.126 matthew 2591: $Fields{'keywords'} = '- not displayed -';
2592: $Fields{'notes'} = '- not displayed -';
2593: $Fields{'abstract'} = '- not displayed -';
2594: $Fields{'subject'} = '- not displayed -';
2595: }
2596: if (length($Fields{'abstract'})>200) {
2597: $Fields{'abstract'} =
2598: substr($Fields{'abstract'},0,200).'...';
2599: }
2600: if (length($Fields{'keywords'})>200) {
2601: $Fields{'keywords'} =
2602: substr($Fields{'keywords'},0,200).'...';
2603: }
2604: return %Fields;
2605: }
2606:
2607: ###########################################################
2608: ###########################################################
2609:
2610: =pod
2611:
2612: =item &handle_custom_fields()
2613:
2614: =cut
2615:
2616: ###########################################################
2617: ###########################################################
2618: sub handle_custom_fields {
2619: my @results = @{shift()};
2620: my $customshow='';
2621: my $extrashow='';
2622: my @customfields;
2623: if ($ENV{'form.customshow'}) {
2624: $customshow=$ENV{'form.customshow'};
2625: $customshow=~s/[^\w\s]//g;
2626: my @fields=map {
2627: "<font color=\"#008000\">$_:</font><!-- $_ -->";
2628: } split(/\s+/,$customshow);
2629: @customfields=split(/\s+/,$customshow);
2630: if ($customshow) {
2631: $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
2632: }
2633: }
2634: my $customdata='';
2635: my %customhash;
2636: foreach my $result (@results) {
2637: if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
2638: my $tmp=$result;
2639: $tmp=~s/^custom\=//;
2640: my ($k,$v)=map {&Apache::lonnet::unescape($_);
2641: } split(/\,/,$tmp);
2642: $customhash{$k}=$v;
2643: }
2644: }
2645: return ($extrashow,\@customfields,\%customhash);
1.41 harris41 2646: }
2647:
1.122 matthew 2648: ######################################################################
2649: ######################################################################
2650:
1.125 matthew 2651: =pod
2652:
2653: =item &search_results_header
2654:
1.130 matthew 2655: Output the proper html headers and javascript code to deal with different
2656: calling modes.
2657:
2658: Takes most inputs directly from %ENV, except $mode.
2659:
2660: =over 4
2661:
2662: =item $mode is either (at this writing) 'Basic' or 'Advanced'
2663:
2664: =back
1.126 matthew 2665:
1.130 matthew 2666: The following environment variables are checked:
1.126 matthew 2667:
2668: =over 4
2669:
2670: =item 'form.catalogmode'
2671:
2672: Checked for 'interactive' and 'groupsearch'.
2673:
2674: =item 'form.mode'
2675:
2676: Checked for existance & 'edit' mode.
2677:
2678: =item 'form.form'
2679:
2680: =item 'form.element'
2681:
2682: =back
2683:
1.125 matthew 2684: =cut
2685:
2686: ######################################################################
2687: ######################################################################
2688: sub search_results_header {
1.150 matthew 2689: my ($importbutton,$closebutton) = @_;
1.125 matthew 2690: my $result = '';
2691: # output beginning of search page
2692: # conditional output of script functions dependent on the mode in
2693: # which the search was invoked
2694: if ($ENV{'form.catalogmode'} eq 'interactive'){
2695: if (! exists($ENV{'form.mode'}) || $ENV{'form.mode'} ne 'edit') {
2696: $result.=<<SCRIPT;
2697: <script type="text/javascript">
2698: function select_data(title,url) {
2699: changeTitle(title);
2700: changeURL(url);
1.150 matthew 2701: parent.close();
1.125 matthew 2702: }
2703: function changeTitle(val) {
1.153 matthew 2704: if (parent.opener.inf.document.forms.resinfo.elements.t) {
2705: parent.opener.inf.document.forms.resinfo.elements.t.value=val;
1.125 matthew 2706: }
2707: }
2708: function changeURL(val) {
1.153 matthew 2709: if (parent.opener.inf.document.forms.resinfo.elements.u) {
2710: parent.opener.inf.document.forms.resinfo.elements.u.value=val;
1.125 matthew 2711: }
2712: }
2713: </script>
2714: SCRIPT
2715: } elsif ($ENV{'form.mode'} eq 'edit') {
2716: my $form = $ENV{'form.form'};
2717: my $element = $ENV{'form.element'};
2718: $result.=<<SCRIPT;
2719: <script type="text/javascript">
2720: function select_data(title,url) {
2721: changeURL(url);
1.150 matthew 2722: parent.close();
1.125 matthew 2723: }
2724: function changeTitle(val) {
2725: }
2726: function changeURL(val) {
1.150 matthew 2727: if (parent.targetwin.document) {
2728: parent.targetwin.document.forms["$form"].elements["$element"].value=val;
1.125 matthew 2729: } else {
2730: var url = 'forms[\"$form\"].elements[\"$element\"].value';
2731: alert("Unable to transfer data to "+url);
2732: }
2733: }
2734: </script>
2735: SCRIPT
2736: }
2737: }
2738: $result.=<<SCRIPT if $ENV{'form.catalogmode'} eq 'groupsearch';
2739: <script type="text/javascript">
1.158 matthew 2740: function queue(checkbox_num,val) {
2741: if (document.forms.results.returnvalues[checkbox_num].checked) {
1.150 matthew 2742: parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
2743: } else {
2744: parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
2745: }
1.125 matthew 2746: }
2747: function select_group() {
1.150 matthew 2748: parent.window.location=
1.125 matthew 2749: "/adm/groupsort?mode=$ENV{'form.mode'}&catalogmode=groupsearch&acts="+
1.150 matthew 2750: parent.statusframe.document.forms.statusform.elements.Queue.value;
1.125 matthew 2751: }
2752: </script>
2753: SCRIPT
1.130 matthew 2754: $result.=<<END;
2755: </head>
1.155 matthew 2756: $bodytag
1.150 matthew 2757: <form name="results" method="post" action="" >
2758: <input type="hidden" name="Queue" value="" />
2759: $importbutton
1.130 matthew 2760: END
1.125 matthew 2761: return $result;
2762: }
2763:
2764: ######################################################################
2765: ######################################################################
1.146 matthew 2766: sub search_status_header {
2767: return <<ENDSTATUS;
2768: <html><head><title>Search Status</title></head>
1.155 matthew 2769: $bodytag
1.146 matthew 2770: <h3>Search Status</h3>
2771: Sending search request to LON-CAPA servers.<br />
2772: ENDSTATUS
2773: }
2774:
1.150 matthew 2775: sub results_link {
2776: my $basic_link = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
2777: "&persistent_db_id=".$ENV{'form.persistent_db_id'};
2778: my $results_link = $basic_link."&phase=results".
1.151 matthew 2779: "&pause=1"."&start=1";
1.150 matthew 2780: return $results_link;
2781: }
2782:
1.146 matthew 2783: ######################################################################
2784: ######################################################################
2785: sub print_frames_interface {
2786: my $r = shift;
2787: my $basic_link = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
2788: "&persistent_db_id=".$ENV{'form.persistent_db_id'};
2789: my $run_search_link = $basic_link."&phase=run_search";
1.150 matthew 2790: my $results_link = &results_link();
1.146 matthew 2791: my $result = <<"ENDFRAMES";
2792: <html>
2793: <head>
1.150 matthew 2794: <script>
2795: var targetwin = opener;
1.158 matthew 2796: var queue = '';
1.150 matthew 2797: </script>
1.146 matthew 2798: <title>LON-CAPA Digital Library Search Results</title>
2799: </head>
1.176 www 2800: <frameset rows="150,*">
1.146 matthew 2801: <frame name="statusframe" src="$run_search_link">
2802: <frame name="resultsframe" src="$results_link">
2803: </frameset>
2804: </html>
2805: ENDFRAMES
2806:
2807: $r->print($result);
2808: return;
2809: }
2810:
2811: ######################################################################
2812: ######################################################################
1.125 matthew 2813:
1.122 matthew 2814: =pod
2815:
2816: =item Metadata Viewing Functions
2817:
2818: Output is a HTML-ified string.
2819: Input arguments are title, author, subject, url, keywords, version,
2820: notes, short abstract, mime, language, creation date,
1.126 matthew 2821: last revision date, owner, copyright, hostname, and
1.122 matthew 2822: extra custom metadata to show.
2823:
2824: =over 4
2825:
2826: =item &detailed_citation_view()
2827:
2828: =cut
2829:
2830: ######################################################################
2831: ######################################################################
1.50 harris41 2832: sub detailed_citation_view {
1.150 matthew 2833: my ($prefix,%values) = @_;
1.50 harris41 2834: my $result=<<END;
1.150 matthew 2835: <b>$prefix<a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
2836: target='search_preview'>$values{'title'}</a></b>
1.56 harris41 2837: <p>
1.130 matthew 2838: <b>$values{'author'}</b>, <i>$values{'owner'}</i><br />
2839:
2840: <b>Subject: </b> $values{'subject'}<br />
2841: <b>Keyword(s): </b> $values{'keywords'}<br />
2842: <b>Notes: </b> $values{'notes'}<br />
2843: <b>MIME Type: </b> $values{'mimetag'}<br />
2844: <b>Language: </b> $values{'language'}<br />
2845: <b>Copyright/Distribution:</b> $values{'cprtag'}<br />
1.78 harris41 2846: </p>
1.126 matthew 2847: $values{'extrashow'}
1.78 harris41 2848: <p>
1.126 matthew 2849: $values{'shortabstract'}
1.50 harris41 2850: </p>
1.150 matthew 2851: <hr align='left' width='200' noshade />
1.50 harris41 2852: END
2853: return $result;
2854: }
2855:
1.122 matthew 2856: ######################################################################
2857: ######################################################################
2858:
2859: =pod
2860:
2861: =item &summary_view()
2862:
2863: =cut
2864: ######################################################################
2865: ######################################################################
1.50 harris41 2866: sub summary_view {
1.150 matthew 2867: my ($prefix,%values) = @_;
1.50 harris41 2868: my $result=<<END;
1.150 matthew 2869: $prefix<a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
1.126 matthew 2870: target='search_preview'>$values{'author'}</a><br />
2871: $values{'title'}<br />
2872: $values{'owner'} -- $values{'lastrevisiondate'}<br />
2873: $values{'copyrighttag'}<br />
2874: $values{'extrashow'}
1.50 harris41 2875: </p>
1.150 matthew 2876: <hr align='left' width='200' noshade />
1.50 harris41 2877: END
2878: return $result;
2879: }
2880:
1.122 matthew 2881: ######################################################################
2882: ######################################################################
2883:
2884: =pod
2885:
1.150 matthew 2886: =item &compact_view()
2887:
2888: =cut
2889:
2890: ######################################################################
2891: ######################################################################
2892: sub compact_view {
2893: my ($prefix,%values) = @_;
2894: my $result=<<END;
2895: $prefix <a href="http://$ENV{'HTTP_HOST'}$values{'url'}" target='search_preview'>
2896: $values{'title'}</a>
2897: <b>$values{'author'}</b><br />
2898: END
2899: return $result;
2900: }
2901:
2902:
2903: ######################################################################
2904: ######################################################################
2905:
2906: =pod
2907:
1.122 matthew 2908: =item &fielded_format_view()
2909:
2910: =cut
2911:
2912: ######################################################################
2913: ######################################################################
1.50 harris41 2914: sub fielded_format_view {
1.150 matthew 2915: my ($prefix,%values) = @_;
1.50 harris41 2916: my $result=<<END;
1.150 matthew 2917: $prefix
1.126 matthew 2918: <b>URL: </b> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
2919: target='search_preview'>$values{'url'}</a>
1.56 harris41 2920: <br />
1.126 matthew 2921: <b>Title:</b> $values{'title'}<br />
2922: <b>Author(s):</b> $values{'author'}<br />
2923: <b>Subject:</b> $values{'subject'}<br />
2924: <b>Keyword(s):</b> $values{'keywords'}<br />
2925: <b>Notes:</b> $values{'notes'}<br />
2926: <b>MIME Type:</b> $values{'mimetag'}<br />
2927: <b>Language:</b> $values{'language'}<br />
2928: <b>Creation Date:</b> $values{'creationdate'}<br />
2929: <b>Last Revision Date:</b> $values{'lastrevisiondate'}<br />
2930: <b>Publisher/Owner:</b> $values{'owner'}<br />
2931: <b>Copyright/Distribution:</b> $values{'copyrighttag'}<br />
2932: <b>Repository Location:</b> $values{'hostname'}<br />
2933: <b>Abstract:</b> $values{'shortabstract'}<br />
2934: $values{'extrashow'}
1.50 harris41 2935: </p>
1.150 matthew 2936: <hr align='left' width='200' noshade />
1.50 harris41 2937: END
2938: return $result;
2939: }
2940:
1.122 matthew 2941: ######################################################################
2942: ######################################################################
2943:
2944: =pod
2945:
2946: =item &xml_sgml_view()
2947:
2948: =back
2949:
2950: =cut
2951:
2952: ######################################################################
2953: ######################################################################
1.50 harris41 2954: sub xml_sgml_view {
1.150 matthew 2955: my ($prefix,%values) = @_;
1.50 harris41 2956: my $result=<<END;
1.150 matthew 2957: $prefix
1.56 harris41 2958: <pre>
2959: <LonCapaResource>
1.126 matthew 2960: <url>$values{'url'}</url>
2961: <title>$values{'title'}</title>
2962: <author>$values{'author'}</author>
2963: <subject>$values{'subject'}</subject>
2964: <keywords>$values{'keywords'}</keywords>
2965: <notes>$values{'notes'}</notes>
1.56 harris41 2966: <mimeInfo>
1.126 matthew 2967: <mime>$values{'mime'}</mime>
2968: <mimetag>$values{'mimetag'}</mimetag>
1.56 harris41 2969: </mimeInfo>
2970: <languageInfo>
1.126 matthew 2971: <language>$values{'lang'}</language>
2972: <languagetag>$values{'language'}</languagetag>
1.56 harris41 2973: </languageInfo>
1.126 matthew 2974: <creationdate>$values{'creationdate'}</creationdate>
2975: <lastrevisiondate>$values{'lastrevisiondate'}</lastrevisiondate>
2976: <owner>$values{'owner'}</owner>
1.56 harris41 2977: <copyrightInfo>
1.126 matthew 2978: <copyright>$values{'copyright'}</copyright>
2979: <copyrighttag>$values{'copyrighttag'}</copyrighttag>
1.56 harris41 2980: </copyrightInfo>
1.126 matthew 2981: <repositoryLocation>$values{'hostname'}</repositoryLocation>
2982: <shortabstract>$values{'shortabstract'}</shortabstract>
1.57 harris41 2983: </LonCapaResource>
1.56 harris41 2984: </pre>
1.126 matthew 2985: $values{'extrashow'}
1.150 matthew 2986: <hr align='left' width='200' noshade />
1.50 harris41 2987: END
2988: return $result;
1.60 harris41 2989: }
2990:
1.122 matthew 2991: ######################################################################
2992: ######################################################################
2993:
2994: =pod
2995:
2996: =item &filled() see if field is filled.
2997:
2998: =cut
2999:
3000: ######################################################################
3001: ######################################################################
1.98 harris41 3002: sub filled {
3003: my ($field)=@_;
3004: if ($field=~/\S/ && $field ne 'any') {
3005: return 1;
1.61 harris41 3006: }
1.98 harris41 3007: else {
3008: return 0;
1.61 harris41 3009: }
1.60 harris41 3010: }
3011:
1.122 matthew 3012: ######################################################################
3013: ######################################################################
3014:
3015: =pod
3016:
3017: =item &output_blank_field_error()
3018:
1.151 matthew 3019: Output a complete page that indicates the user has not filled in enough
3020: information to do a search.
3021:
3022: Inputs: $r (Apache request handle), $closebutton, $parms.
3023:
3024: Returns: nothing
3025:
3026: $parms is extra information to include in the 'Revise search request' link.
3027:
1.122 matthew 3028: =cut
3029:
3030: ######################################################################
3031: ######################################################################
1.98 harris41 3032: sub output_blank_field_error {
1.151 matthew 3033: my ($r,$closebutton,$parms)=@_;
1.98 harris41 3034: # make query information persistent to allow for subsequent revision
3035: $r->print(<<BEGINNING);
3036: <html>
3037: <head>
3038: <title>The LearningOnline Network with CAPA</title>
3039: BEGINNING
3040: $r->print(<<RESULTS);
3041: </head>
1.155 matthew 3042: $bodytag
1.98 harris41 3043: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
3044: <h1>Search Catalog</h1>
3045: <form method="post" action="/adm/searchcat">
1.145 matthew 3046: $hidden_fields
1.151 matthew 3047: <a href="/adm/searchcat?$parms&persistent_db_id=$ENV{'form.persistent_db_id'}"
1.146 matthew 3048: >Revise search request</a>
1.98 harris41 3049: $closebutton
3050: <hr />
1.151 matthew 3051: <h3>Unactionable search query.</h3>
1.98 harris41 3052: <p>
1.151 matthew 3053: You did not fill in enough information for the search to be started.
3054: You need to fill in relevant fields on the search page in order
3055: for a query to be processed.
1.98 harris41 3056: </p>
3057: </body>
3058: </html>
3059: RESULTS
3060: }
3061:
1.122 matthew 3062: ######################################################################
3063: ######################################################################
3064:
3065: =pod
3066:
3067: =item &output_date_error()
3068:
3069: Output a full html page with an error message.
3070:
1.145 matthew 3071: Inputs:
3072:
3073: $r, the request pointer.
3074: $message, the error message for the user.
3075: $closebutton, the specialized close button needed for groupsearch.
3076:
1.122 matthew 3077: =cut
3078:
3079: ######################################################################
3080: ######################################################################
1.60 harris41 3081: sub output_date_error {
1.145 matthew 3082: my ($r,$message,$closebutton)=@_;
1.60 harris41 3083: # make query information persistent to allow for subsequent revision
1.122 matthew 3084: $r->print(<<RESULTS);
1.60 harris41 3085: <html>
3086: <head>
3087: <title>The LearningOnline Network with CAPA</title>
3088: </head>
1.155 matthew 3089: $bodytag
1.98 harris41 3090: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
1.60 harris41 3091: <h1>Search Catalog</h1>
3092: <form method="post" action="/adm/searchcat">
1.145 matthew 3093: $hidden_fields
1.60 harris41 3094: <input type='button' value='Revise search request'
1.98 harris41 3095: onClick='this.form.submit();' />
1.60 harris41 3096: $closebutton
1.98 harris41 3097: <hr />
1.151 matthew 3098: <h3>Error</h3>
1.60 harris41 3099: <p>
3100: $message
3101: </p>
3102: </body>
3103: </html>
3104: RESULTS
1.101 harris41 3105: }
3106:
1.122 matthew 3107: ######################################################################
3108: ######################################################################
3109:
3110: =pod
3111:
3112: =item &start_fresh_session()
3113:
1.142 matthew 3114: Cleans the global %groupsearch_db by removing all fields which begin with
1.122 matthew 3115: 'pre_' or 'store'.
3116:
3117: =cut
3118:
3119: ######################################################################
3120: ######################################################################
1.101 harris41 3121: sub start_fresh_session {
1.142 matthew 3122: delete $groupsearch_db{'mode_catalog'};
3123: foreach (keys %groupsearch_db) {
1.101 harris41 3124: if ($_ =~ /^pre_/) {
1.142 matthew 3125: delete $groupsearch_db{$_};
1.101 harris41 3126: }
3127: if ($_ =~ /^store/) {
1.142 matthew 3128: delete $groupsearch_db{$_};
1.101 harris41 3129: }
1.109 harris41 3130: }
1.3 harris41 3131: }
1.1 www 3132:
3133: 1;
1.162 www 3134:
3135: sub cleanup {
1.163 www 3136: if (tied(%groupsearch_db)) {
3137: &Apache::lonnet::logthis('Cleanup searchcat: groupsearch_db');
3138: unless (untie(%groupsearch_db)) {
3139: &Apache::lonnet::logthis('Failed cleanup searchcat: groupsearch_db');
3140: }
3141: }
1.167 www 3142: &untiehash();
1.162 www 3143: &Apache::lonmysql::disconnect_from_db();
3144: }
1.98 harris41 3145:
1.1 www 3146: __END__
1.105 harris41 3147:
1.121 matthew 3148: =pod
1.105 harris41 3149:
1.121 matthew 3150: =back
1.105 harris41 3151:
3152: =cut
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