Annotation of loncom/interface/lonsearchcat.pm, revision 1.218
1.98 harris41 1: # The LearningOnline Network with CAPA
1.108 harris41 2: # Search Catalog
3: #
1.218 ! matthew 4: # $Id: lonsearchcat.pm,v 1.217 2004/04/27 15:24:09 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
1.205 www 51: search (on a server basis) is displayed to the user in a separate window.
1.121 matthew 52:
53: =head1 Internals
54:
55: =over 4
56:
57: =cut
58:
59: ###############################################################################
1.98 harris41 60: ###############################################################################
1.121 matthew 61:
1.1 www 62: package Apache::lonsearchcat;
63:
64: use strict;
1.167 www 65: use Apache::Constants qw(:common :http);
1.6 harris41 66: use Apache::lonnet();
67: use Apache::File();
1.7 harris41 68: use CGI qw(:standard);
1.41 harris41 69: use Text::Query;
1.101 harris41 70: use GDBM_File;
1.112 harris41 71: use Apache::loncommon();
1.144 matthew 72: use Apache::lonmysql();
1.200 www 73: use Apache::lonmeta;
74: use Apache::lonhtmlcommon;
1.186 www 75: use Apache::lonlocal;
1.204 matthew 76: use LONCAPA::lonmetadata();
1.212 matthew 77: use HTML::Entities();
1.1 www 78:
1.121 matthew 79: ######################################################################
80: ######################################################################
1.196 matthew 81: ##
82: ## Global variables
83: ##
1.121 matthew 84: ######################################################################
85: ######################################################################
1.196 matthew 86: my %groupsearch_db; # Database hash used to save values for the
87: # groupsearch RAT interface.
88: my %persistent_db; # gdbm hash which holds data which is supposed to
89: # persist across calls to lonsearchcat.pm
1.121 matthew 90:
1.200 www 91: # The different view modes and associated functions
92:
93: my %Views = ("detailed" => \&detailed_citation_view,
94: "summary" => \&summary_view,
95: "fielded" => \&fielded_format_view,
96: "xml" => \&xml_sgml_view,
97: "compact" => \&compact_view);
1.101 harris41 98:
1.121 matthew 99: ######################################################################
100: ######################################################################
1.98 harris41 101: sub handler {
102: my $r = shift;
1.197 www 103: # &set_defaults();
1.196 matthew 104: #
105: # set form defaults
1.145 matthew 106: #
1.196 matthew 107: my $hidden_fields;# Hold all the hidden fields used to keep track
108: # of the search system state
109: my $importbutton; # button to take the selected results and go to group
110: # sorting
111: my $diropendb; # The full path to the (temporary) search database file.
112: # This is set and used in &handler() and is also used in
113: # &output_results().
114: my $bodytag; # LON-CAPA standard body tag, gotten from
115: # &Apache::lonnet::bodytag.
116: # No title, no table, just a <body> tag.
1.157 www 117:
118: my $loaderror=&Apache::lonnet::overloaderror($r);
119: if ($loaderror) { return $loaderror; }
120:
1.145 matthew 121: my $closebutton; # button that closes the search window
122: # This button is different for the RAT compared to
123: # normal invocation.
124: #
1.186 www 125: &Apache::loncommon::content_type($r,'text/html');
1.98 harris41 126: $r->send_http_header;
127: return OK if $r->header_only;
1.156 matthew 128: ##
129: ## Prevent caching of the search interface window. Hopefully this means
130: ## we will get the launch=1 passed in a little more.
131: &Apache::loncommon::no_cache($r);
1.145 matthew 132: ##
133: ## Pick up form fields passed in the links.
134: ##
135: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.146 matthew 136: ['catalogmode','launch','acts','mode','form','element','pause',
1.158 matthew 137: 'phase','persistent_db_id','table','start','show',
1.191 albertel 138: 'cleargroupsort','titleelement']);
1.146 matthew 139: ##
140: ## The following is a trick - we wait a few seconds if asked to so
141: ## the daemon running the search can get ahead of the daemon
142: ## printing the results. We only need (theoretically) to do
143: ## this once, so the pause indicator is deleted
144: ##
145: if (exists($ENV{'form.pause'})) {
1.181 matthew 146: sleep(1);
1.146 matthew 147: delete($ENV{'form.pause'});
148: }
1.143 matthew 149: ##
150: ## Initialize global variables
151: ##
1.121 matthew 152: my $domain = $r->dir_config('lonDefDomain');
1.213 matthew 153: $diropendb= "/home/httpd/perl/tmp/".
154: "$ENV{'user.domain'}_$ENV{'user.name'}_searchcat.db";
1.145 matthew 155: #
156: # set the name of the persistent database
1.146 matthew 157: # $ENV{'form.persistent_db_id'} can only have digits in it.
1.145 matthew 158: if (! exists($ENV{'form.persistent_db_id'}) ||
1.147 matthew 159: ($ENV{'form.persistent_db_id'} =~ /\D/) ||
160: ($ENV{'form.launch'} eq '1')) {
1.145 matthew 161: $ENV{'form.persistent_db_id'} = time;
162: }
1.155 matthew 163: $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.146 matthew 164: my $persistent_db_file = "/home/httpd/perl/tmp/".
1.145 matthew 165: &Apache::lonnet::escape($domain).
166: '_'.&Apache::lonnet::escape($ENV{'user.name'}).
167: '_'.$ENV{'form.persistent_db_id'}.'_persistent_search.db';
1.146 matthew 168: ##
1.209 matthew 169: &Apache::lonhtmlcommon::clear_breadcrumbs();
170: if (exists($ENV{'request.course.id'}) && $ENV{'request.course.id'} ne '') {
171: &Apache::lonhtmlcommon::add_breadcrumb
172: ({href=>'/adm/searchcat?'.
173: 'catalogmode='.$ENV{'form.catalogmode'}.
174: '&launch='.$ENV{'form.launch'}.
175: '&mode='.$ENV{'form.mode'},
176: text=>"Course and Catalog Search",
177: bug=>'Searching',});
178: } else {
179: &Apache::lonhtmlcommon::add_breadcrumb
180: ({href=>'/adm/searchcat?'.
181: 'catalogmode='.$ENV{'form.catalogmode'}.
182: '&launch='.$ENV{'form.launch'}.
183: '&mode='.$ENV{'form.mode'},
184: text=>"Catalog Search",
185: bug=>'Searching',});
186: }
187: #
1.152 matthew 188: if (! &get_persistent_form_data($persistent_db_file)) {
1.150 matthew 189: if ($ENV{'form.phase'} =~ /(run_search|results)/) {
190: &Apache::lonnet::logthis("lonsearchcat:Unable to recover data ".
191: "from $persistent_db_file");
192: $r->print(<<END);
193: <html>
194: <head><title>LON-CAPA Search Error</title></head>
1.155 matthew 195: $bodytag
1.150 matthew 196: We were unable to retrieve data describing your search. This is a serious
197: error and has been logged. Please alert your LON-CAPA administrator.
198: </body>
199: </html>
200: END
201: return OK;
202: }
1.147 matthew 203: }
1.124 matthew 204: ##
1.143 matthew 205: ## Clear out old values from groupsearch database
1.124 matthew 206: ##
1.146 matthew 207: untie %groupsearch_db if (tied(%groupsearch_db));
1.158 matthew 208: if (($ENV{'form.cleargroupsort'} eq '1') ||
209: (($ENV{'form.launch'} eq '1') &&
210: ($ENV{'form.catalogmode'} eq 'groupsearch'))) {
1.148 matthew 211: if (tie(%groupsearch_db,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
1.101 harris41 212: &start_fresh_session();
1.142 matthew 213: untie %groupsearch_db;
1.158 matthew 214: delete($ENV{'form.cleargroupsort'});
1.122 matthew 215: } else {
1.155 matthew 216: # This is a stupid error to give to the user.
217: # It really tells them nothing.
218: $r->print('<html><head></head>'.$bodytag.
219: 'Unable to tie hash to db file</body></html>');
1.101 harris41 220: return OK;
221: }
222: }
1.124 matthew 223: ##
1.150 matthew 224: ## Configure hidden fields
1.124 matthew 225: ##
1.145 matthew 226: $hidden_fields = '<input type="hidden" name="persistent_db_id" value="'.
1.150 matthew 227: $ENV{'form.persistent_db_id'}.'" />'."\n";
228: if (exists($ENV{'form.catalogmode'})) {
229: $hidden_fields .= '<input type="hidden" name="catalogmode" value="'.
230: $ENV{'form.catalogmode'}.'" />'."\n";
231: }
232: if (exists($ENV{'form.form'})) {
233: $hidden_fields .= '<input type="hidden" name="form" value="'.
234: $ENV{'form.form'}.'" />'."\n";
235: }
236: if (exists($ENV{'form.element'})) {
237: $hidden_fields .= '<input type="hidden" name="element" value="'.
238: $ENV{'form.element'}.'" />'."\n";
239: }
1.191 albertel 240: if (exists($ENV{'form.titleelement'})) {
241: $hidden_fields .= '<input type="hidden" name="titleelement" value="'.
242: $ENV{'form.titleelement'}.'" />'."\n";
243: }
1.150 matthew 244: if (exists($ENV{'form.mode'})) {
245: $hidden_fields .= '<input type="hidden" name="mode" value="'.
246: $ENV{'form.mode'}.'" />'."\n";
247: }
248: ##
249: ## Configure dynamic components of interface
1.146 matthew 250: ##
1.98 harris41 251: if ($ENV{'form.catalogmode'} eq 'interactive') {
1.150 matthew 252: $closebutton="<input type='button' name='close' value='CLOSE' ";
253: if ($ENV{'form.phase'} =~ /(results|run_search)/) {
254: $closebutton .="onClick='parent.close()'";
255: } else {
256: $closebutton .="onClick='self.close()'";
257: }
258: $closebutton .=">\n";
1.124 matthew 259: } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
1.150 matthew 260: $closebutton="<input type='button' name='close' value='CLOSE' ";
261: if ($ENV{'form.phase'} =~ /(results|run_search)/) {
262: $closebutton .="onClick='parent.close()'";
263: } else {
264: $closebutton .="onClick='self.close()'";
265: }
266: $closebutton .= ">";
1.98 harris41 267: $importbutton=<<END;
268: <input type='button' name='import' value='IMPORT'
269: onClick='javascript:select_group()'>
270: END
1.146 matthew 271: } else {
272: $closebutton = '';
273: $importbutton = '';
1.98 harris41 274: }
1.124 matthew 275: ##
1.146 matthew 276: ## Sanity checks on form elements
1.124 matthew 277: ##
1.146 matthew 278: if (!defined($ENV{'form.viewselect'})) {
1.150 matthew 279: if (($ENV{'form.catalogmode'} eq 'groupsearch') ||
280: ($ENV{'form.catalogmode'} eq 'interactive')) {
281: $ENV{'form.viewselect'} ="Compact View";
282: } else {
283: $ENV{'form.viewselect'} ="Detailed Citation View";
284: }
1.146 matthew 285: }
1.149 matthew 286: $ENV{'form.phase'} = 'disp_basic' if (! exists($ENV{'form.phase'}));
1.151 matthew 287: $ENV{'form.show'} = 20 if (! exists($ENV{'form.show'}));
1.209 matthew 288: #
289: $ENV{'form.searchmode'} = 'basic';
290: if ($ENV{'form.phase'} eq 'adv_search' ||
291: $ENV{'form.phase'} eq 'disp_adv') {
292: $ENV{'form.searchmode'} = 'advanced';
293: } elsif ($ENV{'form.phase'} eq 'course_search') {
294: $ENV{'form.searchmode'} = 'course_search';
295: }
296: #
297: if ($ENV{'form.searchmode'} eq 'advanced') {
298: &Apache::lonhtmlcommon::add_breadcrumb
299: ({href=>'/adm/searchcat?phase=disp_adv&'.
300: 'catalogmode='.$ENV{'form.catalogmode'}.
301: '&launch='.$ENV{'form.launch'}.
302: '&mode='.$ENV{'form.mode'},
303: text=>"Advanced Search",
304: bug=>'Searching',});
305: } elsif ($ENV{'form.searchmode'} eq 'course search') {
306: &Apache::lonhtmlcommon::add_breadcrumb
307: ({href=>'/adm/searchcat?phase=disp_adv&'.
308: 'catalogmode='.$ENV{'form.catalogmode'}.
309: '&launch='.$ENV{'form.launch'}.
310: '&mode='.$ENV{'form.mode'},
311: text=>"Course Search",
312: bug=>'Searching',});
313: }
1.146 matthew 314: ##
315: ## Switch on the phase
316: ##
317: if ($ENV{'form.phase'} eq 'disp_basic') {
1.196 matthew 318: &print_basic_search_form($r,$closebutton,$hidden_fields);
1.146 matthew 319: } elsif ($ENV{'form.phase'} eq 'disp_adv') {
1.196 matthew 320: &print_advanced_search_form($r,$closebutton,$hidden_fields);
1.146 matthew 321: } elsif ($ENV{'form.phase'} eq 'results') {
1.196 matthew 322: &display_results($r,$importbutton,$closebutton,$diropendb);
1.151 matthew 323: } elsif ($ENV{'form.phase'} =~ /^(sort|run_search)$/) {
1.146 matthew 324: my ($query,$customquery,$customshow,$libraries,$pretty_string) =
325: &get_persistent_data($persistent_db_file,
326: ['query','customquery','customshow',
327: 'libraries','pretty_string']);
1.151 matthew 328: if ($ENV{'form.phase'} eq 'sort') {
329: &print_sort_form($r,$pretty_string);
330: } elsif ($ENV{'form.phase'} eq 'run_search') {
331: &run_search($r,$query,$customquery,$customshow,
332: $libraries,$pretty_string);
333: }
1.167 www 334: } elsif ($ENV{'form.phase'} eq 'course_search') {
335: &course_search($r);
1.146 matthew 336: } elsif(($ENV{'form.phase'} eq 'basic_search') ||
337: ($ENV{'form.phase'} eq 'adv_search')) {
338: # Set up table
339: if (! defined(&create_results_table())) {
1.198 www 340: my $errorstring=&Apache::lonmysql::get_error();
1.211 matthew 341: &Apache::lonnet::logthis('lonsearchcat.pm: Unable to create '.
342: 'needed table. lonmysql error:'.
343: $errorstring);
1.147 matthew 344: $r->print(<<END);
345: <html><head><title>Search Error</title></head>
1.155 matthew 346: $bodytag
1.147 matthew 347: Unable to create table in which to store search results.
348: The search has been aborted.
349: </body>
350: </html>
351: END
352: return OK;
1.146 matthew 353: }
1.147 matthew 354: delete($ENV{'form.launch'});
1.146 matthew 355: if (! &make_form_data_persistent($r,$persistent_db_file)) {
1.147 matthew 356: $r->print(<<END);
357: <html><head><title>Search Error</title></head>
1.155 matthew 358: $bodytag
1.147 matthew 359: Unable to properly store search information. The search has been aborted.
360: </body>
361: </html>
362: END
363: return OK;
1.146 matthew 364: }
1.145 matthew 365: #
1.139 matthew 366: # We are running a search
1.134 matthew 367: my ($query,$customquery,$customshow,$libraries) =
368: (undef,undef,undef,undef);
1.143 matthew 369: my $pretty_string;
1.146 matthew 370: if ($ENV{'form.phase'} eq 'basic_search') {
1.180 matthew 371: ($query,$pretty_string,$libraries) =
1.196 matthew 372: &parse_basic_search($r,$closebutton,$hidden_fields);
1.146 matthew 373: } else { # Advanced search
1.143 matthew 374: ($query,$customquery,$customshow,$libraries,$pretty_string)
1.196 matthew 375: = &parse_advanced_search($r,$closebutton,$hidden_fields);
1.134 matthew 376: return OK if (! defined($query));
377: }
1.152 matthew 378: &make_persistent({ query => $query,
1.146 matthew 379: customquery => $customquery,
380: customshow => $customshow,
381: libraries => $libraries,
382: pretty_string => $pretty_string },
383: $persistent_db_file);
1.145 matthew 384: ##
1.146 matthew 385: ## Print out the frames interface
1.145 matthew 386: ##
1.146 matthew 387: &print_frames_interface($r);
1.124 matthew 388: }
389: return OK;
390: }
1.98 harris41 391:
1.124 matthew 392: ######################################################################
393: ######################################################################
1.196 matthew 394: ##
395: ## Course Search
396: ##
397: ######################################################################
398: ######################################################################
399: { # Scope the course search to avoid global variables
400: #
401: # Variables For course search
402: my %alreadyseen;
403: my %hash;
404: my $totalfound;
1.124 matthew 405:
1.167 www 406: sub course_search {
407: my $r=shift;
1.217 matthew 408: my $bodytag=&Apache::loncommon::bodytag('Course Search');
1.167 www 409: my $pretty_search_string = '<b>'.$ENV{'form.courseexp'}.'</b>';
410: my $search_string = $ENV{'form.courseexp'};
411: my @New_Words;
412: if ($ENV{'form.crsrelated'}) {
413: ($search_string,@New_Words) = &related_version($ENV{'form.courseexp'});
414: if (@New_Words) {
1.200 www 415: $pretty_search_string .= ' '.&mt("with related words").": <b>@New_Words</b>.";
1.167 www 416: } else {
1.200 www 417: $pretty_search_string .= ' '.&mt('with no related words').".";
1.167 www 418: }
419: }
420: my $fulltext=$ENV{'form.crsfulltext'};
421: my @allwords=($search_string,@New_Words);
1.169 www 422: $totalfound=0;
1.167 www 423: $r->print('<html><head><title>LON-CAPA Course Search</title></head>'.
1.203 www 424: $bodytag.'<hr /><center><font size="+2" face="arial">'.$pretty_search_string.'</font></center><hr />');
1.167 www 425: $r->rflush();
426: # ======================================================= Go through the course
1.196 matthew 427: undef %alreadyseen;
428: %alreadyseen=();
1.169 www 429: my $c=$r->connection;
1.196 matthew 430: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.".db",
431: &GDBM_READER(),0640)) {
432: foreach (keys %hash) {
433: if ($c->aborted()) { last; }
434: if (($_=~/^src\_(.+)$/) && (!$alreadyseen{$hash{$_}})) {
435: &checkonthis($r,$hash{$_},0,$hash{'title_'.$1},$fulltext,
436: @allwords);
437: }
438: }
439: untie(%hash);
440: }
1.169 www 441: unless ($totalfound) {
1.187 www 442: $r->print('<p>'.&mt('No resources found').'.</p>');
1.169 www 443: }
1.167 www 444: # =================================================== Done going through course
445: $r->print('</body></html>');
446: }
447:
448: # =============================== This pulls up a resource and its dependencies
449:
450: sub checkonthis {
1.168 www 451: my ($r,$url,$level,$title,$fulltext,@allwords)=@_;
1.167 www 452: $alreadyseen{$url}=1;
453: $r->rflush();
454: my $result=&Apache::lonnet::metadata($url,'title').' '.
455: &Apache::lonnet::metadata($url,'subject').' '.
456: &Apache::lonnet::metadata($url,'abstract').' '.
457: &Apache::lonnet::metadata($url,'keywords');
458: if (($url) && ($fulltext)) {
1.168 www 459: $result.=&Apache::lonnet::ssi_body($url);
1.167 www 460: }
461: $result=~s/\s+/ /gs;
462: my $applies=0;
463: foreach (@allwords) {
464: if ($_=~/\w/) {
465: if ($result=~/$_/si) {
466: $applies++;
467: }
468: }
469: }
470: # Does this resource apply?
471: if ($applies) {
472: $r->print('<br />');
473: for (my $i=0;$i<=$level*5;$i++) {
474: $r->print(' ');
475: }
476: $r->print('<a href="'.$url.'" target="cat">'.
1.169 www 477: ($title?$title:$url).'</a><br />');
478: $totalfound++;
479: } elsif ($fulltext) {
480: $r->print(' .');
1.167 www 481: }
1.169 www 482: $r->rflush();
1.167 www 483: # Check also the dependencies of this one
484: my $dependencies=
485: &Apache::lonnet::metadata($url,'dependencies');
486: foreach (split(/\,/,$dependencies)) {
487: if (($_=~/^\/res\//) && (!$alreadyseen{$_})) {
1.168 www 488: &checkonthis($r,$_,$level+1,'',$fulltext,@allwords);
1.167 www 489: }
490: }
491: }
492:
1.196 matthew 493: sub untiehash {
494: if (tied(%hash)) {
495: untie(%hash);
496: }
497: }
498:
499: } # End of course search scoping
500:
1.207 matthew 501: sub search_html_header {
502: my $Str = <<ENDHEADER;
503: <html>
504: <head>
505: <title>The LearningOnline Network with CAPA</title>
506: </head>
507: ENDHEADER
508: return $Str;
509: }
510:
1.167 www 511: ######################################################################
512: ######################################################################
513:
1.124 matthew 514: =pod
515:
1.146 matthew 516: =item &print_basic_search_form()
1.124 matthew 517:
1.204 matthew 518: Prints the form for the basic search. Sorry the name is so cryptic.
1.124 matthew 519:
520: =cut
521:
522: ######################################################################
523: ######################################################################
1.204 matthew 524: sub print_basic_search_form {
1.196 matthew 525: my ($r,$closebutton,$hidden_fields) = @_;
1.203 www 526: my $bodytag=&Apache::loncommon::bodytag('Search').
1.217 matthew 527: &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching','Searching',
1.209 matthew 528: undef,undef,! $ENV{'form.launch'});
1.207 matthew 529: my $scrout = &search_html_header().$bodytag;
530: if (&Apache::lonnet::allowed('bre',$ENV{'request.role.domain'})) {
1.213 matthew 531: # Define interface components
532: my $userelatedwords=
533: &mt('[_1] use related words',
534: &Apache::lonhtmlcommon::checkbox
535: ('related',$ENV{'form.related'}));
536: my $onlysearchdomain=
537: &mt('[_1] only search domain [_2]',
538: &Apache::lonhtmlcommon::checkbox
539: ('domains',$ENV{'form.domains'}),
540: $r->dir_config('lonDefDomain'));
541: my $adv_search_link =
542: '<a href="/adm/searchcat?'.
543: 'phase=disp_adv&'.
544: 'catalogmode='.$ENV{'form.catalogmode'}.
545: '&launch='.$ENV{'form.launch'}.
546: '&mode='.$ENV{'form.mode'}.
547: '">'.&mt('Advanced Search').'</a>';
548: #
549: $scrout.='<form name="loncapa_search" method="post" '.
550: 'action="/adm/searchcat">'.
551: '<input type="hidden" name="phase" value="basic_search" />'.
552: $hidden_fields;
553: #
554: $scrout .= '<center>'.$/;
555: if ($ENV{'request.course.id'}) {
556: $scrout .= '<h1>'.&mt('LON-CAPA Catalog Search').'</h1>';
557: } else {
558: # No need to tell them they are searching
559: $scrout.= ('<br />'x2);
560: }
561: $scrout.='<table>'.
562: '<tr><td align="center" valign="top">'.
1.208 matthew 563: &Apache::lonhtmlcommon::textbox('basicexp',
1.213 matthew 564: $ENV{'form.basicexp'},50).'<br />'.
565: '<font size="-1">'.&searchhelp().'</font>'.'</td>'.
566: '<td><font size="-1">'.
567: '<nobr>'.(' 'x3).$adv_search_link.'</nobr>'.'<br />'.
568: '<nobr>'.(' 'x1).$userelatedwords.'</nobr>'.'<br />'.
569: '<nobr>'.(' 'x1).$onlysearchdomain.'</nobr>'.'<br />'.
570: '</font></td>'.
571: '</tr>'.$/;
572: #
573: # $scrout .= '<tr><td align="center">'.
574: # '<font size="-1">'.
575: # $userelatedwords.(' 'x3).
576: # $onlysearchdomain.(' 'x2).$adv_search_link.
577: # '</font>'.
578: # '</td></tr>'.$/;
579: $scrout .= '<tr><td align="center" colspan="2">'.
580: '<font size="-1">'.
581: '<input type="submit" name="basicsubmit" '.
582: 'value="'.&mt('Search').'" />'.
583: (' 'x2).$closebutton.(' 'x2).&viewoptions().
584: '</font>'.
585: '</td></tr>'.$/;
586: $scrout .= '</table>'.$/.'</center>'.'</form>';
1.180 matthew 587: }
588: if ($ENV{'request.course.id'}) {
1.213 matthew 589: my %lt=&Apache::lonlocal::texthash('srch' => 'Search',
1.187 www 590: 'header' => 'Course Search',
591: 'note' => 'Enter terms or phrases, then press "Search" below',
1.200 www 592: 'use' => 'use related words',
593: 'full' =>'fulltext search (time consuming)'
1.187 www 594: );
1.180 matthew 595: $scrout.=(<<ENDCOURSESEARCH);
1.213 matthew 596: <form name="loncapa_search" method="post" action="/adm/searchcat">
597: <center>
1.180 matthew 598: <hr />
1.187 www 599: <h1>$lt{'header'}</h1>
1.167 www 600: <input type="hidden" name="phase" value="course_search" />
601: $hidden_fields
602: <p>
1.187 www 603: $lt{'note'}.
1.167 www 604: </p>
605: <p>
606: <table>
607: <tr><td>
608: ENDCOURSESEARCH
1.180 matthew 609: $scrout.=' '.
1.200 www 610: &Apache::lonhtmlcommon::textbox('courseexp',
611: $ENV{'form.courseexp'},40);
1.180 matthew 612: my $crscheckbox =
1.200 www 613: &Apache::lonhtmlcommon::checkbox('crsfulltext',
614: $ENV{'form.crsfulltext'});
1.180 matthew 615: my $relcheckbox =
1.200 www 616: &Apache::lonhtmlcommon::checkbox('crsrelated',
617: $ENV{'form.crsrelated'});
1.180 matthew 618: $scrout.=(<<ENDENDCOURSE);
1.167 www 619: </td></tr>
1.200 www 620: <tr><td>$relcheckbox $lt{'use'}</td><td></td></tr>
621: <tr><td>$crscheckbox $lt{'full'}</td><td></td></tr>
1.167 www 622: </table><p>
1.187 www 623: <input type="submit" name="coursesubmit" value='$lt{'srch'}' />
1.167 www 624: </p>
1.213 matthew 625: </center>
626: </form>
1.167 www 627: ENDENDCOURSE
1.180 matthew 628: }
1.167 www 629: $scrout.=(<<ENDDOCUMENT);
1.124 matthew 630: </body>
631: </html>
632: ENDDOCUMENT
1.146 matthew 633: $r->print($scrout);
634: return;
1.124 matthew 635: }
636: ######################################################################
637: ######################################################################
638:
639: =pod
640:
641: =item &advanced_search_form()
642:
1.204 matthew 643: Prints the advanced search form.
1.124 matthew 644:
645: =cut
646:
647: ######################################################################
648: ######################################################################
1.146 matthew 649: sub print_advanced_search_form{
1.196 matthew 650: my ($r,$closebutton,$hidden_fields) = @_;
1.217 matthew 651: my $bodytag=&Apache::loncommon::bodytag('Advanced Catalog Search').
652: &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching',
653: 'Searching',
654: undef,undef,
655: ! $ENV{'form.launch'});
656:
1.200 www 657: my %lt=&Apache::lonlocal::texthash('srch' => 'Search',
658: 'reset' => 'Reset',
659: 'help' => 'Help');
1.217 matthew 660: my $advanced_buttons=<<"END";
1.200 www 661: <input type="submit" name="advancedsubmit" value='$lt{"srch"}' />
662: <input type="reset" name="reset" value='$lt{"reset"}' />
1.129 matthew 663: $closebutton
664: END
1.207 matthew 665: my $scrout=&search_html_header();
666: $scrout .= <<"ENDHEADER";
1.154 www 667: $bodytag
1.200 www 668: <form method="post" action="/adm/searchcat" name="advsearch">
1.217 matthew 669: <p>
1.129 matthew 670: $advanced_buttons
1.124 matthew 671: ENDHEADER
1.208 matthew 672: $scrout.=(' 'x2).&viewoptions().'</p>'.$hidden_fields.
673: '<input type="hidden" name="phase" value="adv_search" />';
1.200 www 674: my %fields=&Apache::lonmeta::fieldnames();
1.208 matthew 675: #
1.217 matthew 676: $scrout .= '<h3>'.&mt('Standard Metadata').'</h3>';
677: $scrout .= "<table>\n";
678: $scrout .= '<tr><td> </td><td colspan="2"><font size="-1">'.
679: (' 'x2).&searchhelp()."</font></td></tr>\n";
1.208 matthew 680: my %related_word_search =
1.217 matthew 681: ('title' => 1,
682: 'author' => 0,
683: 'owner' => 0,
684: 'authorspace' => 0,
685: 'modifyinguser'=> 0,
686: 'keywords' => 1,
687: 'notes' => 1,
688: 'abstract' => 1,
689: 'standards'=> 1,
690: 'mime' => 1,
1.208 matthew 691: );
1.209 matthew 692: #
1.208 matthew 693: foreach my $field ('title','author','owner','authorspace','modifyinguser',
694: 'keywords','notes','abstract','standards','mime') {
695: $scrout.='<tr><td align="right">'.&titlefield($fields{$field}).'</td><td>'.
696: &Apache::lonmeta::prettyinput($field,
697: $ENV{'form.'.$field},
698: $field,
699: 'advsearch',
700: $related_word_search{$field},
701: '</td><td align="left">',
702: $ENV{'form.'.$field.'_related'},
703: 50);
704: if ($related_word_search{$field}) {
705: $scrout .= 'related words';
706: } else {
707: $scrout .= '</td><td> ';
708: }
709: $scrout .= '</td></tr>'.$/;
710: }
711: foreach my $field ('lowestgradelevel','highestgradelevel') {
712: $scrout.='<tr>'.
713: '<td align="right">'.&titlefield($fields{$field}).'</td>'.
714: '<td colspan="2">'.
715: &Apache::lonmeta::prettyinput($field,
716: $ENV{'form.'.$field},
717: $field,
718: 'advsearch',
719: 0).
720: '</td></tr>'.$/;
1.200 www 721: }
1.208 matthew 722: $scrout.='<tr><td align="right">'.
723: &titlefield(&mt('MIME Type Category')).'</td><td colspan="2">'.
1.202 www 724: &Apache::loncommon::filecategoryselect('category',
725: $ENV{'form.category'}).
1.208 matthew 726: '</td></tr>'.$/;
727: $scrout.='<tr><td align="right" valign="top">'.
728: &titlefield(&mt('Domains')).'</td><td colspan="2">'.
1.202 www 729: &Apache::loncommon::domain_select('domains',
730: $ENV{'form.domains'},1).
1.208 matthew 731: '</td></tr>'.$/;
1.217 matthew 732: #
733: # Misc metadata
734: $scrout.='<tr><td align="right" valign="top">'.
735: &titlefield(&mt('Copyright/Distribution')).'</td><td colspan="2">'.
736: &Apache::lonmeta::selectbox('copyright',
737: '',,
738: \&Apache::loncommon::copyrightdescription,
739: ( undef,
740: &Apache::loncommon::copyrightids)
741: ).'</td></tr>'.$/;
742: $scrout.='<tr><td align="right" valign="top">'.
743: &titlefield(&mt('Language')).'</td><td colspan="2">'.
744: &Apache::lonmeta::selectbox('language',
745: 'notset',,
746: \&Apache::loncommon::languagedescription,
747: ('any',&Apache::loncommon::languageids)
748: ).'</td></tr>';
749: $scrout .= "</table>\n";
750: #
751: # Dynamic metadata
752: $scrout .= '<h3>'.&mt('Problem Statistics').'</h3>';
753: $scrout .= "<table>\n";
754: $scrout .= '<tr><td> </td><td align="center">'.&mt('Minimum').'</td>'.
755: '<td align="center">'.&mt('Maximum').'</td></tr>'."\n";
756: foreach my $statistic
757: ({ name=>'stdno',
758: description=>'Number of Students',},
759: { name => 'avetries',
760: description=>'Average tries to answer correctly',},
761: { name => 'difficulty',
762: description=>'Degree of difficulty',},
763: { name => 'disc',
764: description=>'Degree of discrimination'}) {
765: $scrout .= '<tr><td align="right">'.
766: &titlefield(&mt($statistic->{'description'})).
767: '</td><td align="center">'.
768: '<input type="text" name="'.$statistic->{'name'}.'_min" '.
769: 'value="" size="6" />'.
770: '</td><td align="center">'.
771: '<input type="text" name="'.$statistic->{'name'}.'_max" '.
772: 'value="" size="6" />'.
773: '</td></tr>'.$/;
774: }
775: $scrout .= "</table>\n";
776: $scrout .= '<h3>'.&mt('Evaluation Data').'</h3>';
777: $scrout .= "<table>\n";
778: $scrout .= '<tr><td> </td><td align="center">'.&mt('Minimum').'</td>'.
779: '<td align="center">'.&mt('Maximum').'</td></tr>'."\n";
780: foreach my $evaluation
781: ( { name => 'clear',
782: description => 'Material presented in clear way'},
783: { name =>'depth',
784: description => 'Material covered with sufficient depth'},
785: { name => 'helpful',
786: description => 'Material is helpful'},
787: { name => 'correct',
788: description => 'Material appears to be correct'},
789: { name => 'technical',
790: description => 'Resource is technically correct'}){
791: $scrout .= '<tr><td align="right">'.
792: &titlefield(&mt($evaluation->{'description'})).
793: '</td><td align="center">'.
794: '<input type="text" name="'.$evaluation->{'name'}.'_min" '.
795: 'value="" size="6" />'.
796: '</td><td align="center">'.
797: '<input type="text" name="'.$evaluation->{'name'}.'_max" '.
798: 'value="" size="6" />'.
799: '</td></tr>'.$/;
800: }
801: $scrout .= "</table>\n";
1.216 matthew 802: #
803: # Creation/Modification date limits
1.217 matthew 804: $scrout .= '<h3>'.&mt('Creation and Modification dates').'</h3>';
1.216 matthew 805: $scrout .= "\n<table>\n";
806: my $cafter =
807: &Apache::lonhtmlcommon::date_setter('advsearch', # formname
808: 'creationdate1', # fieldname
809: 0, # current value
810: '', # special
811: 1, # includeempty
812: '', # state
813: 1, # no_hh_mm_ss
814: );
815: my $cbefore =
816: &Apache::lonhtmlcommon::date_setter('advsearch', # formname
817: 'creationdate2', # fieldname
818: 0, # current value
819: '', # special
820: 1, # includeempty
821: '', # state
822: 1, # no_hh_mm_ss
823: );
824: $scrout .= &mt('<tr><td align="right">Created between</td>'.
825: '<td>[_1]</td></tr>'.
826: '<tr><td align="right">and </td>'.
827: '<td>[_2]</td></tr>',$cafter,$cbefore);
828: my $lafter =
829: &Apache::lonhtmlcommon::date_setter('advsearch',
830: 'revisiondate1',
831: 0, # current value
832: '', # special
833: 1, # includeempty
834: '', # state
835: 1, # no_hh_mm_ss
836: );
837: my $lbefore =
838: &Apache::lonhtmlcommon::date_setter('advsearch',
839: 'revisiondate2',
840: 0, # current value
841: '', # special
842: 1, # includeempty
843: '', # state
844: 1, # no_hh_mm_ss
845: );
846: $scrout .= &mt('<tr><td align="right">Last modified between </td>'.
847: '<td>[_1]</td></tr>'.
848: '<tr><td align="right">and</td>'.
849: '<td>[_2]</td></tr>',$lafter,$lbefore);
1.202 www 850: $scrout.="</table>\n";
1.124 matthew 851: $scrout.=<<ENDDOCUMENT;
1.129 matthew 852: $advanced_buttons
1.8 harris41 853: </form>
854: </body>
855: </html>
856: ENDDOCUMENT
1.146 matthew 857: $r->print($scrout);
858: return;
1.124 matthew 859: }
1.204 matthew 860:
1.200 www 861: ######################################################################
862: ######################################################################
863:
864: =pod
865:
1.204 matthew 866: =item &titlefield()
1.200 www 867:
868: Inputs: title text
869:
870: Outputs: titletext with font wrapper
871:
872: =cut
873:
874: ######################################################################
875: ######################################################################
876: sub titlefield {
877: my $title=shift;
1.208 matthew 878: return $title;
1.200 www 879: }
1.204 matthew 880:
1.200 www 881: ######################################################################
882: ######################################################################
883:
884: =pod
885:
1.204 matthew 886: =item viewoptiontext()
1.200 www 887:
888: Inputs: codename for view option
889:
890: Outputs: displayed text
891:
892: =cut
893:
894: ######################################################################
895: ######################################################################
896: sub viewoptiontext {
897: my $code=shift;
1.204 matthew 898: my %desc=&Apache::lonlocal::texthash
899: ('detailed' => "Detailed Citation View",
900: 'xml' => 'XML/SGML',
901: 'compact' => 'Compact View',
902: 'fielded' => 'Fielded Format',
903: 'summary' => 'Summary View');
1.200 www 904: return $desc{$code};
905: }
1.204 matthew 906:
907: ######################################################################
1.200 www 908: ######################################################################
909:
910: =pod
911:
1.204 matthew 912: =item viewoptions()
1.200 www 913:
914: Inputs: none
915:
916: Outputs: text for box with view options
917:
918: =cut
919:
920: ######################################################################
921: ######################################################################
922: sub viewoptions {
1.208 matthew 923: my $scrout="\n".'<nobr>';
924: if (! defined($ENV{'form.viewselect'})) {
925: $ENV{'form.viewselect'}='detailed';
926: }
1.200 www 927: $scrout.=&Apache::lonmeta::selectbox('viewselect',
928: $ENV{'form.viewselect'},
929: \&viewoptiontext,
930: sort(keys(%Views)));
1.208 matthew 931: $scrout.= ' ';
1.214 matthew 932: my $countselect = &Apache::lonmeta::selectbox('show',
933: $ENV{'form.show'},
934: undef,
935: (10,20,50,100,1000,10000));
936: $scrout .= (' 'x2).&mt('[_1] Records per Page',$countselect).
937: '</nobr>'.$/;
1.200 www 938: return $scrout;
1.201 www 939: }
940:
941: ######################################################################
1.204 matthew 942: ######################################################################
1.201 www 943:
944: =pod
945:
1.204 matthew 946: =item searchhelp()
1.201 www 947:
948: Inputs: none
949:
950: Outputs: return little blurb on how to enter searches
951:
952: =cut
953:
954: ######################################################################
955: ######################################################################
956: sub searchhelp {
957: return &mt('Enter terms or phrases separated by AND, OR, or NOT');
1.200 www 958: }
1.8 harris41 959:
1.121 matthew 960: ######################################################################
961: ######################################################################
962:
963: =pod
964:
1.204 matthew 965: =item &get_persistent_form_data()
1.145 matthew 966:
1.146 matthew 967: Inputs: filename of database
968:
969: Outputs: returns undef on database errors.
970:
971: This function is the reverse of &make_persistent() for form data.
1.145 matthew 972: Retrieve persistent data from %persistent_db. Retrieved items will have their
1.146 matthew 973: values unescaped. If a form value already exists in $ENV, it will not be
974: overwritten. Form values that are array references may have values appended
975: to them.
1.145 matthew 976:
977: =cut
978:
979: ######################################################################
980: ######################################################################
1.146 matthew 981: sub get_persistent_form_data {
982: my $filename = shift;
1.147 matthew 983: return 0 if (! -e $filename);
1.146 matthew 984: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
1.148 matthew 985: &GDBM_READER(),0640));
1.146 matthew 986: #
987: # These make sure we do not get array references printed out as 'values'.
1.161 matthew 988: my %arrays_allowed = ('form.domains'=>1);
1.146 matthew 989: #
990: # Loop through the keys, looking for 'form.'
991: foreach my $name (keys(%persistent_db)) {
992: next if ($name !~ /^form./);
1.182 matthew 993: # Kludgification begins!
994: if ($name eq 'form.domains' &&
995: $ENV{'form.searchmode'} eq 'basic' &&
996: $ENV{'form.phase'} ne 'disp_basic') {
997: next;
998: }
999: # End kludge (hopefully)
1.152 matthew 1000: next if (exists($ENV{$name}));
1.146 matthew 1001: my @values = map {
1002: &Apache::lonnet::unescape($_);
1003: } split(',',$persistent_db{$name});
1004: next if (@values <1);
1.152 matthew 1005: if ($arrays_allowed{$name}) {
1006: $ENV{$name} = [@values];
1.146 matthew 1007: } else {
1.152 matthew 1008: $ENV{$name} = $values[0] if ($values[0]);
1.146 matthew 1009: }
1010: }
1011: untie (%persistent_db);
1012: return 1;
1013: }
1.181 matthew 1014:
1.146 matthew 1015: ######################################################################
1016: ######################################################################
1017:
1018: =pod
1019:
1.204 matthew 1020: =item &get_persistent_data()
1.146 matthew 1021:
1022: Inputs: filename of database, ref to array of values to recover.
1023:
1024: Outputs: array of values. Returns undef on error.
1025:
1026: This function is the reverse of &make_persistent();
1027: Retrieve persistent data from %persistent_db. Retrieved items will have their
1028: values unescaped. If the item contains commas (before unescaping), the
1029: returned value will be an array pointer.
1030:
1031: =cut
1032:
1033: ######################################################################
1034: ######################################################################
1035: sub get_persistent_data {
1036: my $filename = shift;
1037: my @Vars = @{shift()};
1038: my @Values; # Return array
1039: return undef if (! -e $filename);
1040: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
1.148 matthew 1041: &GDBM_READER(),0640));
1.146 matthew 1042: foreach my $name (@Vars) {
1043: if (! exists($persistent_db{$name})) {
1044: push @Values, undef;
1045: next;
1046: }
1047: my @values = map {
1048: &Apache::lonnet::unescape($_);
1049: } split(',',$persistent_db{$name});
1.152 matthew 1050: if (@values <= 1) {
1.146 matthew 1051: push @Values,$values[0];
1.145 matthew 1052: } else {
1.146 matthew 1053: push @Values,\@values;
1.145 matthew 1054: }
1055: }
1.146 matthew 1056: untie (%persistent_db);
1057: return @Values;
1.145 matthew 1058: }
1059:
1060: ######################################################################
1061: ######################################################################
1062:
1063: =pod
1064:
1.121 matthew 1065: =item &make_persistent()
1066:
1.146 matthew 1067: Inputs: Hash of values to save, filename of persistent database.
1068:
1069: Store variables away to the %persistent_db.
1.145 matthew 1070: Values will be escaped. Values that are array pointers will have their
1.205 www 1071: elements escaped and concatenated in a comma separated string.
1.122 matthew 1072:
1.121 matthew 1073: =cut
1074:
1075: ######################################################################
1076: ######################################################################
1.98 harris41 1077: sub make_persistent {
1.133 matthew 1078: my %save = %{shift()};
1.146 matthew 1079: my $filename = shift;
1080: return undef if (! tie(%persistent_db,'GDBM_File',
1.148 matthew 1081: $filename,&GDBM_WRCREAT(),0640));
1.146 matthew 1082: foreach my $name (keys(%save)) {
1.145 matthew 1083: my @values = (ref($save{$name}) ? @{$save{$name}} : ($save{$name}));
1084: # We handle array references, but not recursively.
1085: my $store = join(',', map { &Apache::lonnet::escape($_); } @values );
1086: $persistent_db{$name} = $store;
1.109 harris41 1087: }
1.146 matthew 1088: untie(%persistent_db);
1089: return 1;
1090: }
1091:
1092: ######################################################################
1093: ######################################################################
1094:
1095: =pod
1096:
1097: =item &make_form_data_persistent()
1098:
1099: Inputs: filename of persistent database.
1100:
1101: Store most form variables away to the %persistent_db.
1102: Values will be escaped. Values that are array pointers will have their
1.205 www 1103: elements escaped and concatenated in a comma separated string.
1.146 matthew 1104:
1105: =cut
1106:
1107: ######################################################################
1108: ######################################################################
1109: sub make_form_data_persistent {
1110: my $r = shift;
1111: my $filename = shift;
1112: my %save;
1113: foreach (keys(%ENV)) {
1.150 matthew 1114: next if (!/^form/ || /submit/);
1.146 matthew 1115: $save{$_} = $ENV{$_};
1116: }
1.152 matthew 1117: return &make_persistent(\%save,$filename);
1.98 harris41 1118: }
1119:
1.122 matthew 1120: ######################################################################
1121: ######################################################################
1122:
1123: =pod
1124:
1.134 matthew 1125: =item &parse_advanced_search()
1126:
1127: Parse advanced search form and return the following:
1128:
1129: =over 4
1130:
1131: =item $query Scalar containing an SQL query.
1.126 matthew 1132:
1.134 matthew 1133: =item $customquery Scalar containing a custom query.
1134:
1135: =item $customshow Scalar containing commands to show custom metadata.
1136:
1137: =item $libraries_to_query Reference to array of domains to search.
1138:
1139: =back
1.122 matthew 1140:
1141: =cut
1142:
1143: ######################################################################
1144: ######################################################################
1.134 matthew 1145: sub parse_advanced_search {
1.196 matthew 1146: my ($r,$closebutton,$hidden_fields)=@_;
1.216 matthew 1147: my @BasicFields = ('title','author','subject','keywords','url','version',
1.217 matthew 1148: 'notes','abstract','extension','owner',
1.216 matthew 1149: # 'custommetadata','customshow',
1150: 'modifyinguser','standards','mime');
1.217 matthew 1151: my @StatsFields = ('stdno','avetries','difficulty','disc');
1152: my @EvalFields = ('clear','depth','helpful','correct','technical');
1.32 harris41 1153: my $fillflag=0;
1.143 matthew 1154: my $pretty_search_string = "<br />\n";
1.64 harris41 1155: # Clean up fields for safety
1.216 matthew 1156: for my $field (@BasicFields,
1157: 'creationdatestart_month','creationdatestart_day',
1.64 harris41 1158: 'creationdatestart_year','creationdateend_month',
1159: 'creationdateend_day','creationdateend_year',
1160: 'lastrevisiondatestart_month','lastrevisiondatestart_day',
1161: 'lastrevisiondatestart_year','lastrevisiondateend_month',
1.216 matthew 1162: 'lastrevisiondateend_day','lastrevisiondateend_year') {
1163: $ENV{'form.'.$field}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1.64 harris41 1164: }
1.117 matthew 1165: foreach ('mode','form','element') {
1166: # is this required? Hmmm.
1.216 matthew 1167: next if (! exists($ENV{'form.'.$_}));
1168: $ENV{'form.'.$_}=&Apache::lonnet::unescape($ENV{'form.'.$_});
1169: $ENV{'form.'.$_}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1.117 matthew 1170: }
1.131 matthew 1171: # Preprocess the category form element.
1.161 matthew 1172: $ENV{'form.category'} = 'any' if (! defined($ENV{'form.category'}) ||
1173: ref($ENV{'form.category'}));
1174: #
1.90 harris41 1175: # Check to see if enough information was filled in
1.216 matthew 1176: for my $field (@BasicFields) {
1177: if (&filled($ENV{'form.'.$field})) {
1.32 harris41 1178: $fillflag++;
1179: }
1180: }
1.216 matthew 1181: for my $field ('lowestgradelevel','highestgradelevel') {
1182: if ( $ENV{'form.'.$field} =~ /^\d+$/ &&
1183: $ENV{'form.'.$field} > 0) {
1184: $fillflag++;
1185: }
1186: }
1.212 matthew 1187: if (! $fillflag) {
1.204 matthew 1188: &output_blank_field_error($r,$closebutton,
1189: 'phase=disp_adv',$hidden_fields);
1.134 matthew 1190: return ;
1.32 harris41 1191: }
1.90 harris41 1192: # Turn the form input into a SQL-based query
1.39 harris41 1193: my $query='';
1.45 harris41 1194: my @queries;
1.143 matthew 1195: my $font = '<font color="#800000" face="helvetica">';
1.90 harris41 1196: # Evaluate logical expression AND/OR/NOT phrase fields.
1.216 matthew 1197: foreach my $field (@BasicFields) {
1.44 harris41 1198: if ($ENV{'form.'.$field}) {
1.142 matthew 1199: my $searchphrase = $ENV{'form.'.$field};
1.143 matthew 1200: $pretty_search_string .= $font."$field</font> contains <b>".
1201: $searchphrase."</b>";
1.142 matthew 1202: if ($ENV{'form.'.$field.'_related'}) {
1.143 matthew 1203: my @New_Words;
1204: ($searchphrase,@New_Words) = &related_version($searchphrase);
1205: if (@New_Words) {
1206: $pretty_search_string .= " with related words: ".
1207: "<b>@New_Words</b>.";
1208: } else {
1209: $pretty_search_string .= " with no related words.";
1210: }
1.142 matthew 1211: }
1.143 matthew 1212: $pretty_search_string .= "<br />\n";
1.142 matthew 1213: push @queries,&build_SQL_query($field,$searchphrase);
1.131 matthew 1214: }
1.44 harris41 1215: }
1.161 matthew 1216: #
1217: # Make the 'mime' from 'form.category' and 'form.extension'
1218: #
1219: my $searchphrase;
1220: if (exists($ENV{'form.category'}) &&
1221: $ENV{'form.category'} !~ /^\s*$/ &&
1222: $ENV{'form.category'} ne 'any') {
1223: my @extensions = &Apache::loncommon::filecategorytypes
1224: ($ENV{'form.category'});
1225: if (scalar(@extensions) > 0) {
1226: $searchphrase = join(' OR ',@extensions);
1227: }
1228: }
1229: if (defined($searchphrase)) {
1230: push @queries,&build_SQL_query('mime',$searchphrase);
1231: $pretty_search_string .=$font.'mime</font> contains <b>'.
1232: $searchphrase.'</b><br />';
1.135 matthew 1233: }
1.204 matthew 1234: #
1.90 harris41 1235: # Evaluate option lists
1.216 matthew 1236: if ($ENV{'form.lowestgradelevel'} &&
1237: $ENV{'form.lowestgradelevel'} ne '0' &&
1238: $ENV{'form.lowestgradelevel'} =~ /^\d+$/) {
1239: push(@queries,
1240: '(lowestgradelevel>='.$ENV{'form.lowestgradelevel'}.')');
1241: $pretty_search_string.="lowestgradelevel>=".
1242: $ENV{'form.lowestgradelevel'}."<br />\n";
1243: }
1244: if ($ENV{'form.highestgradelevel'} &&
1245: $ENV{'form.highestgradelevel'} ne '0' &&
1246: $ENV{'form.highestgradelevel'} =~ /^\d+$/) {
1247: push(@queries,
1248: '(highestgradelevel<='.$ENV{'form.highestgradelevel'}.')');
1249: $pretty_search_string.="highestgradelevel<=".
1250: $ENV{'form.highestgradelevel'}."<br />\n";
1251: }
1.58 harris41 1252: if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
1.90 harris41 1253: push @queries,"(language like \"$ENV{'form.language'}\")";
1.143 matthew 1254: $pretty_search_string.=$font."language</font>= ".
1255: &Apache::loncommon::languagedescription($ENV{'form.language'}).
1256: "<br />\n";
1.58 harris41 1257: }
1258: if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
1.90 harris41 1259: push @queries,"(copyright like \"$ENV{'form.copyright'}\")";
1.143 matthew 1260: $pretty_search_string.=$font."copyright</font> = ".
1261: &Apache::loncommon::copyrightdescription($ENV{'form.copyright'}).
1262: "<br \>\n";
1.58 harris41 1263: }
1.143 matthew 1264: #
1.217 matthew 1265: # Statistics
1266: foreach my $field (@StatsFields,@EvalFields) {
1267: my ($min,$max);
1268: if (exists($ENV{'form.'.$field.'_min'}) &&
1269: $ENV{'form.'.$field.'_min'} ne '') {
1270: $min = $ENV{'form.'.$field.'_min'};
1271: }
1272: if (exists($ENV{'form.'.$field.'_max'}) &&
1273: $ENV{'form.'.$field.'_max'} ne '') {
1274: $max = $ENV{'form.'.$field.'_max'};
1275: }
1276: next if (! defined($max) && ! defined($min));
1277: if (defined($min) && defined($max)) {
1278: ($min,$max) = sort {$a <=>$b} ($min,$max);
1279: }
1280: if (defined($min) && $min =~ /^(\d+\.\d+|\d+|\.\d+)$/) {
1281: push(@queries,'('.$field.'>'.$min.')');
1282: $pretty_search_string.=$font.$field.'</font>>'.$min.'<br />';
1283: }
1284: if (defined($max) && $max =~ /^(\d+\.\d+|\d+|\.\d+)$/) {
1285: push(@queries,'('.$field.'<'.$max.')');
1286: $pretty_search_string.=$font.$field.'</font><'.$max.'<br />';
1287: }
1288: }
1289: #
1.90 harris41 1290: # Evaluate date windows
1.216 matthew 1291: my $cafter =
1292: &Apache::lonhtmlcommon::get_date_from_form('creationdate1');
1293: my $cbefore =
1294: &Apache::lonhtmlcommon::get_date_from_form('creationdate2');
1295: if ($cafter > $cbefore) {
1296: my $tmp = $cafter;
1297: $cafter = $cbefore;
1298: $cbefore = $tmp;
1299: }
1300: my $mafter =
1301: &Apache::lonhtmlcommon::get_date_from_form('revisiondate1');
1302: my $mbefore =
1303: &Apache::lonhtmlcommon::get_date_from_form('revisiondate2');
1304: if ($mafter > $mbefore) {
1305: my $tmp = $mafter;
1306: $mafter = $mbefore;
1307: $mbefore = $tmp;
1308: }
1309: my ($datequery,$error,$prettydate)=&build_date_queries($cafter,$cbefore,
1310: $mafter,$mbefore);
1311: if (defined($error)) {
1312: &output_date_error($r,$error,$closebutton,$hidden_fields);
1313: } elsif (defined($datequery)) {
1.143 matthew 1314: # Here is where you would set up pretty_search_string to output
1315: # date query information.
1.216 matthew 1316: $pretty_search_string .= '<br />'.$prettydate.'<br />';
1.60 harris41 1317: push @queries,$datequery;
1318: }
1.204 matthew 1319: #
1.90 harris41 1320: # Process form information for custom metadata querying
1.134 matthew 1321: my $customquery=undef;
1.204 matthew 1322: ##
1323: ## The custom metadata search was removed q long time ago mostly
1324: ## because I was unable to figureout exactly how it worked and could
1325: ## not imagine people actually using it. MH
1326: ##
1327: # if ($ENV{'form.custommetadata'}) {
1328: # $pretty_search_string .=$font."Custom Metadata Search</font>: <b>".
1329: # $ENV{'form.custommetadata'}."</b><br />\n";
1330: # $customquery=&build_custommetadata_query('custommetadata',
1331: # $ENV{'form.custommetadata'});
1332: # }
1.134 matthew 1333: my $customshow=undef;
1.204 matthew 1334: # if ($ENV{'form.customshow'}) {
1335: # $pretty_search_string .=$font."Custom Metadata Display</font>: <b>".
1336: # $ENV{'form.customshow'}."</b><br />\n";
1337: # $customshow=$ENV{'form.customshow'};
1338: # $customshow=~s/[^\w\s]//g;
1339: # my @fields=split(/\s+/,$customshow);
1340: # $customshow=join(" ",@fields);
1341: # }
1342: ##
1.132 matthew 1343: ## Deal with restrictions to given domains
1344: ##
1.180 matthew 1345: my ($libraries_to_query,$pretty_domains_string) =
1346: &parse_domain_restrictions();
1347: $pretty_search_string .= $pretty_domains_string."<br />\n";
1348: #
1349: if (@queries) {
1.216 matthew 1350: $query="select * from metadata where ".join(" AND ",@queries);
1.180 matthew 1351: } elsif ($customquery) {
1352: $query = '';
1353: }
1.217 matthew 1354: # &Apache::lonnet::logthis('query = '.$/.$query);
1.180 matthew 1355: return ($query,$customquery,$customshow,$libraries_to_query,
1356: $pretty_search_string);
1357: }
1358:
1359: sub parse_domain_restrictions {
1.132 matthew 1360: my $libraries_to_query = undef;
1361: # $ENV{'form.domains'} can be either a scalar or an array reference.
1362: # We need an array.
1.180 matthew 1363: if (! exists($ENV{'form.domains'})) {
1364: return (undef,'');
1365: }
1366: my @allowed_domains;
1367: if (ref($ENV{'form.domains'})) {
1368: @allowed_domains = @{$ENV{'form.domains'}};
1369: } else {
1370: @allowed_domains = ($ENV{'form.domains'});
1371: }
1.204 matthew 1372: #
1.132 matthew 1373: my %domain_hash = ();
1.143 matthew 1374: my $pretty_domains_string;
1.132 matthew 1375: foreach (@allowed_domains) {
1376: $domain_hash{$_}++;
1377: }
1.143 matthew 1378: if ($domain_hash{'any'}) {
1.152 matthew 1379: $pretty_domains_string = "In all LON-CAPA domains.";
1.143 matthew 1380: } else {
1381: if (@allowed_domains > 1) {
1.152 matthew 1382: $pretty_domains_string = "In LON-CAPA domains:";
1.143 matthew 1383: } else {
1.152 matthew 1384: $pretty_domains_string = "In LON-CAPA domain ";
1.143 matthew 1385: }
1386: foreach (sort @allowed_domains) {
1.152 matthew 1387: $pretty_domains_string .= "<b>".$_."</b> ";
1.132 matthew 1388: }
1.143 matthew 1389: foreach (keys(%Apache::lonnet::libserv)) {
1390: if (exists($domain_hash{$Apache::lonnet::hostdom{$_}})) {
1391: push @$libraries_to_query,$_;
1392: }
1.132 matthew 1393: }
1394: }
1.180 matthew 1395: return ($libraries_to_query,$pretty_domains_string);
1.18 harris41 1396: }
1397:
1.122 matthew 1398: ######################################################################
1399: ######################################################################
1400:
1401: =pod
1402:
1.134 matthew 1403: =item &parse_basic_search()
1.122 matthew 1404:
1.134 matthew 1405: Parse the basic search form and return a scalar containing an sql query.
1.126 matthew 1406:
1.122 matthew 1407: =cut
1408:
1409: ######################################################################
1410: ######################################################################
1.134 matthew 1411: sub parse_basic_search {
1.145 matthew 1412: my ($r,$closebutton)=@_;
1.204 matthew 1413: #
1.64 harris41 1414: # Clean up fields for safety
1415: for my $field ('basicexp') {
1416: $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;
1417: }
1.117 matthew 1418: foreach ('mode','form','element') {
1419: # is this required? Hmmm.
1420: next unless (exists($ENV{"form.$_"}));
1421: $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
1422: $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1423: }
1.180 matthew 1424: my ($libraries_to_query,$pretty_domains_string) =
1425: &parse_domain_restrictions();
1.204 matthew 1426: #
1427: # Check to see if enough of a query is filled in
1.26 harris41 1428: unless (&filled($ENV{'form.basicexp'})) {
1.151 matthew 1429: &output_blank_field_error($r,$closebutton,'phase=disp_basic');
1.24 harris41 1430: return OK;
1431: }
1.143 matthew 1432: my $pretty_search_string = '<b>'.$ENV{'form.basicexp'}.'</b>';
1.142 matthew 1433: my $search_string = $ENV{'form.basicexp'};
1.141 matthew 1434: if ($ENV{'form.related'}) {
1.143 matthew 1435: my @New_Words;
1436: ($search_string,@New_Words) = &related_version($ENV{'form.basicexp'});
1437: if (@New_Words) {
1438: $pretty_search_string .= " with related words: <b>@New_Words</b>.";
1439: } else {
1440: $pretty_search_string .= " with no related words.";
1441: }
1.141 matthew 1442: }
1.204 matthew 1443: #
1.90 harris41 1444: # Build SQL query string based on form page
1.39 harris41 1445: my $query='';
1.178 matthew 1446: my $concatarg=join(',',
1.124 matthew 1447: ('title', 'author', 'subject', 'notes', 'abstract',
1448: 'keywords'));
1.95 harris41 1449: $concatarg='title' if $ENV{'form.titleonly'};
1.178 matthew 1450: $query=&build_SQL_query('concat_ws(" ",'.$concatarg.')',$search_string);
1.180 matthew 1451: if (defined($pretty_domains_string) && $pretty_domains_string ne '') {
1452: $pretty_search_string .= ' '.$pretty_domains_string;
1453: }
1.143 matthew 1454: $pretty_search_string .= "<br />\n";
1.183 matthew 1455: my $final_query = 'SELECT * FROM metadata WHERE '.$query;
1.204 matthew 1456: # &Apache::lonnet::logthis($final_query);
1.183 matthew 1457: return ($final_query,$pretty_search_string,
1.180 matthew 1458: $libraries_to_query);
1.22 harris41 1459: }
1460:
1.122 matthew 1461: ######################################################################
1462: ######################################################################
1463:
1464: =pod
1465:
1.204 matthew 1466: =item &related_version()
1.142 matthew 1467:
1468: Modifies an input string to include related words. Words in the string
1469: are replaced with parenthesized lists of 'OR'd words. For example
1470: "torque" is replaced with "(torque OR word1 OR word2 OR ...)".
1471:
1472: Note: Using this twice on a string is probably silly.
1473:
1474: =cut
1475:
1476: ######################################################################
1477: ######################################################################
1478: sub related_version {
1479: my $search_string = shift;
1480: my $result = $search_string;
1.143 matthew 1481: my %New_Words = ();
1.142 matthew 1482: while ($search_string =~ /(\w+)/cg) {
1483: my $word = $1;
1484: next if (lc($word) =~ /\b(or|and|not)\b/);
1485: my @Words = &Apache::loncommon::get_related_words($word);
1.143 matthew 1486: @Words = ($#Words>4? @Words[0..4] : @Words);
1487: foreach (@Words) { $New_Words{$_}++;}
1488: my $replacement = join " OR ", ($word,@Words);
1.142 matthew 1489: $result =~ s/(\b)$word(\b)/$1($replacement)$2/g;
1490: }
1.143 matthew 1491: return $result,sort(keys(%New_Words));
1.142 matthew 1492: }
1493:
1494: ######################################################################
1495: ######################################################################
1496:
1497: =pod
1498:
1.122 matthew 1499: =item &build_SQL_query()
1500:
1.126 matthew 1501: Builds a SQL query string from a logical expression with AND/OR keywords
1502: using Text::Query and &recursive_SQL_query_builder()
1503:
1.122 matthew 1504: =cut
1505:
1506: ######################################################################
1507: ######################################################################
1.98 harris41 1508: sub build_SQL_query {
1509: my ($field_name,$logic_statement)=@_;
1510: my $q=new Text::Query('abc',
1511: -parse => 'Text::Query::ParseAdvanced',
1512: -build => 'Text::Query::Build');
1513: $q->prepare($logic_statement);
1514: my $matchexp=${$q}{'matchexp'}; chomp $matchexp;
1515: my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);
1516: return $sql_query;
1517: }
1518:
1.122 matthew 1519: ######################################################################
1520: ######################################################################
1521:
1522: =pod
1523:
1524: =item &build_custommetadata_query()
1525:
1.126 matthew 1526: Constructs a custom metadata query using a rather heinous regular
1527: expression.
1528:
1.122 matthew 1529: =cut
1530:
1531: ######################################################################
1532: ######################################################################
1.98 harris41 1533: sub build_custommetadata_query {
1534: my ($field_name,$logic_statement)=@_;
1535: my $q=new Text::Query('abc',
1536: -parse => 'Text::Query::ParseAdvanced',
1537: -build => 'Text::Query::BuildAdvancedString');
1538: $q->prepare($logic_statement);
1539: my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
1540: # quick fix to change literal into xml tag-matching
1541: # will eventually have to write a separate builder module
1.122 matthew 1542: # wordone=wordtwo becomes\<wordone\>[^\<] *wordtwo[^\<]*\<\/wordone\>
1543: $matchexp =~ s/(\w+)\\=([\w\\\+]+)?# wordone=wordtwo is changed to
1544: /\\<$1\\>?# \<wordone\>
1545: \[\^\\<\]?# [^\<]
1546: \*$2\[\^\\<\]?# *wordtwo[^\<]
1547: \*\\<\\\/$1\\>?# *\<\/wordone\>
1548: /g;
1.98 harris41 1549: return $matchexp;
1550: }
1551:
1.122 matthew 1552: ######################################################################
1553: ######################################################################
1554:
1555: =pod
1556:
1557: =item &recursive_SQL_query_build()
1558:
1.126 matthew 1559: Recursively constructs an SQL query. Takes as input $dkey and $pattern.
1560:
1.122 matthew 1561: =cut
1562:
1563: ######################################################################
1564: ######################################################################
1.98 harris41 1565: sub recursive_SQL_query_build {
1566: my ($dkey,$pattern)=@_;
1567: my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
1568: return $pattern unless @matches;
1569: foreach my $match (@matches) {
1.173 matthew 1570: $match=~/\[ (\w+)\s(.*) \]/;
1571: my ($key,$value)=($1,$2);
1572: my $replacement='';
1573: if ($key eq 'literal') {
1.178 matthew 1574: $replacement="($dkey LIKE \"\%$value\%\")";
1575: } elsif (lc($key) eq 'not') {
1576: $value=~s/LIKE/NOT LIKE/;
1.173 matthew 1577: # $replacement="($dkey not like $value)";
1578: $replacement="$value";
1579: } elsif ($key eq 'and') {
1580: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
1581: $replacement="($1 AND $2)";
1582: } elsif ($key eq 'or') {
1583: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
1584: $replacement="($1 OR $2)";
1.98 harris41 1585: }
1586: substr($pattern,
1.173 matthew 1587: index($pattern,$match),
1588: length($match),
1589: $replacement);
1.98 harris41 1590: }
1591: &recursive_SQL_query_build($dkey,$pattern);
1592: }
1.22 harris41 1593:
1.122 matthew 1594: ######################################################################
1595: ######################################################################
1596:
1597: =pod
1598:
1599: =item &build_date_queries()
1600:
1.126 matthew 1601: Builds a SQL logic query to check time/date entries.
1602: Also reports errors (check for /^Incorrect/).
1603:
1.122 matthew 1604: =cut
1605:
1606: ######################################################################
1607: ######################################################################
1.98 harris41 1608: sub build_date_queries {
1.216 matthew 1609: my ($cafter,$cbefore,$mafter,$mbefore) = @_;
1610: my ($result,$error,$pretty_string);
1611: #
1612: # Verify the input
1613: if (! defined($cafter) && ! defined($cbefore) &&
1614: ! defined($mafter) && ! defined($mbefore)) {
1615: # This is an okay situation, so return undef for the error
1616: return (undef,undef,undef);
1617: }
1618: if ((defined($cafter) && ! defined($cbefore)) ||
1619: (defined($cbefore) && ! defined($cafter))) {
1620: # This is bad, so let them know
1621: $error = &mt('Incorrect entry for the creation date. '.
1622: 'You must specify both the beginning and ending dates.');
1623: }
1624: if (! defined($error) &&
1625: ((defined($mafter) && ! defined($mbefore)) ||
1626: (defined($mbefore) && ! defined($mafter)))) {
1627: # This is also bad, so let them know
1628: $error = &mt('Incorrect entry for the last revision date. '.
1629: 'You must specify both the beginning and ending dates.');
1.98 harris41 1630: }
1.216 matthew 1631: if (! defined($error)) {
1632: #
1633: # Build the queries
1634: my @queries;
1635: if (defined($cbefore) && defined($cafter)) {
1636: my (undef,undef,undef,$caday,$camon,$cayear) = localtime($cafter);
1637: my (undef,undef,undef,$cbday,$cbmon,$cbyear) = localtime($cbefore);
1638: # Correct for year being relative to 1900
1639: $cayear+=1900; $cbyear+=1900;
1640: my $cquery=
1641: '(creationdate BETWEEN '.
1642: "'".$cayear.'-'.$camon.'-'.$caday."'".
1643: ' AND '.
1644: "'".$cbyear.'-'.$cbmon.'-'.$cbday." 23:59:59')";
1645: $pretty_string .= '<br />' if (defined($pretty_string));
1646: $pretty_string .=
1647: &mt('created between [_1] and [_2]',
1648: &Apache::lonlocal::locallocaltime($cafter),
1649: &Apache::lonlocal::locallocaltime($cbefore+24*60*60-1));
1650: push(@queries,$cquery);
1651: $pretty_string =~ s/ 00:00:00//g;
1652: }
1653: if (defined($mbefore) && defined($mafter)) {
1654: my (undef,undef,undef,$maday,$mamon,$mayear) = localtime($mafter);
1655: my (undef,undef,undef,$mbday,$mbmon,$mbyear) = localtime($mbefore);
1656: # Correct for year being relative to 1900
1657: $mayear+=1900; $mbyear+=1900;
1658: my $mquery=
1659: '(lastrevisiondate BETWEEN '.
1660: "'".$mayear.'-'.$mamon.'-'.$maday."'".
1661: ' AND '.
1662: "'".$mbyear.'-'.$mbmon.'-'.$mbday." 23:59:59')";
1663: push(@queries,$mquery);
1664: $pretty_string .= '<br />' if (defined($pretty_string));
1665: $pretty_string .=
1666: &mt('last revised between [_1] and [_2]',
1667: &Apache::lonlocal::locallocaltime($mafter),
1668: &Apache::lonlocal::locallocaltime($mbefore+24*60*60-1));
1669: $pretty_string =~ s/ 00:00:00//g;
1670: }
1671: if (@queries) {
1672: $result .= join(" AND ",@queries);
1673: }
1.98 harris41 1674: }
1.216 matthew 1675: return ($result,$error,$pretty_string);
1.18 harris41 1676: }
1.6 harris41 1677:
1.122 matthew 1678: ######################################################################
1679: ######################################################################
1680:
1.144 matthew 1681: =pod
1682:
1683: =item ©right_check()
1684:
1.204 matthew 1685: Inputs: $Metadata, a hash pointer of metadata for a resource.
1686:
1687: Returns: 1 if the resource is available to the user making the query,
1688: 0 otherwise.
1689:
1.144 matthew 1690: =cut
1691:
1692: ######################################################################
1693: ######################################################################
1694: sub copyright_check {
1695: my $Metadata = shift;
1696: # Check copyright tags and skip results the user cannot use
1697: my (undef,undef,$resdom,$resname) = split('/',
1698: $Metadata->{'url'});
1699: # Check for priv
1700: if (($Metadata->{'copyright'} eq 'priv') &&
1701: (($ENV{'user.name'} ne $resname) &&
1702: ($ENV{'user.domain'} ne $resdom))) {
1703: return 0;
1704: }
1705: # Check for domain
1706: if (($Metadata->{'copyright'} eq 'domain') &&
1707: ($ENV{'user.domain'} ne $resdom)) {
1708: return 0;
1709: }
1710: return 1;
1711: }
1712:
1.151 matthew 1713: ######################################################################
1714: ######################################################################
1715:
1716: =pod
1717:
1.204 matthew 1718: =item &ensure_db_and_table()
1.151 matthew 1719:
1720: Ensure we can get lonmysql to connect to the database and the table we
1721: need exists.
1722:
1723: Inputs: $r, table id
1724:
1725: Returns: undef on error, 1 if the table exists.
1726:
1727: =cut
1728:
1729: ######################################################################
1730: ######################################################################
1731: sub ensure_db_and_table {
1732: my ($r,$table) = @_;
1733: ##
1734: ## Sanity check the table id.
1735: ##
1736: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
1737: $r->print("Unable to retrieve search results. ".
1738: "Unable to determine the table results were stored in. ".
1739: "</body></html>");
1740: return undef;
1741: }
1742: ##
1743: ## Make sure we can connect and the table exists.
1744: ##
1745: my $connection_result = &Apache::lonmysql::connect_to_db();
1746: if (!defined($connection_result)) {
1747: $r->print("Unable to connect to the MySQL database where your results".
1748: " are stored. </body></html>");
1749: &Apache::lonnet::logthis("lonsearchcat: unable to get lonmysql to".
1750: " connect to database.");
1751: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
1752: return undef;
1753: }
1754: my $table_check = &Apache::lonmysql::check_table($table);
1755: if (! defined($table_check)) {
1756: $r->print("A MySQL error has occurred.</form></body></html>");
1757: &Apache::lonnet::logthis("lonmysql was unable to determine the status".
1758: " of table ".$table);
1759: return undef;
1760: } elsif (! $table_check) {
1761: $r->print("The table of results could not be found.");
1762: &Apache::lonnet::logthis("The user requested a table, ".$table.
1763: ", that could not be found.");
1764: return undef;
1765: }
1766: return 1;
1767: }
1768:
1769: ######################################################################
1770: ######################################################################
1771:
1772: =pod
1773:
1.204 matthew 1774: =item &print_sort_form()
1775:
1776: The sort feature is not implemented at this time. This form just prints
1777: a link to change the search query.
1.151 matthew 1778:
1779: =cut
1780:
1781: ######################################################################
1782: ######################################################################
1783: sub print_sort_form {
1784: my ($r,$pretty_query_string) = @_;
1.196 matthew 1785: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.151 matthew 1786: ##
1.187 www 1787: my %SortableFields=&Apache::lonlocal::texthash(
1788: id => 'Default',
1.151 matthew 1789: title => 'Title',
1790: author => 'Author',
1791: subject => 'Subject',
1792: url => 'URL',
1793: version => 'Version Number',
1794: mime => 'Mime type',
1795: lang => 'Language',
1796: owner => 'Owner/Publisher',
1797: copyright => 'Copyright',
1798: hostname => 'Host',
1799: creationdate => 'Creation Date',
1.187 www 1800: lastrevisiondate => 'Revision Date'
1.151 matthew 1801: );
1802: ##
1803: my $table = $ENV{'form.table'};
1804: return if (! &ensure_db_and_table($r,$table));
1805: ##
1806: ## Get the number of results
1807: ##
1808: my $total_results = &Apache::lonmysql::number_of_rows($table);
1809: if (! defined($total_results)) {
1810: $r->print("A MySQL error has occurred.</form></body></html>");
1811: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
1812: " of rows in table ".$table);
1813: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
1814: return;
1815: }
1816: my $result;
1817: $result.=<<END;
1818: <html>
1819: <head>
1820: <script>
1821: function change_sort() {
1822: var newloc = "/adm/searchcat?phase=results";
1823: newloc += "&persistent_db_id=$ENV{'form.persistent_db_id'}";
1824: newloc += "&sortby=";
1825: newloc += document.forms.statusform.elements.sortby.value;
1826: parent.resultsframe.location= newloc;
1827: }
1828: </script>
1829: <title>Results</title>
1830: </head>
1.155 matthew 1831: $bodytag
1.151 matthew 1832: <form name="statusform" action="" method="post">
1.153 matthew 1833: <input type="hidden" name="Queue" value="" />
1.151 matthew 1834: END
1835:
1836: #<h2>Sort Results</h2>
1837: #Sort by: <select size="1" name="sortby" onchange="javascript:change_sort();">
1838: # $ENV{'form.sortby'} = 'id' if (! defined($ENV{'form.sortby'}));
1839: # foreach (keys(%SortableFields)) {
1840: # $result.="<option name=\"$_\"";
1841: # if ($_ eq $ENV{'form.sortby'}) {
1842: # $result.=" selected ";
1843: # }
1844: # $result.=" >$SortableFields{$_}</option>\n";
1845: # }
1846: # $result.="</select>\n";
1847: my $revise = &revise_button();
1848: $result.=<<END;
1849: <p>
1850: There are $total_results matches to your query. $revise
1851: </p><p>
1852: Search:$pretty_query_string
1853: </p>
1854: </form>
1855: </body>
1856: </html>
1857: END
1858: $r->print($result);
1859: return;
1860: }
1861:
1.144 matthew 1862: #####################################################################
1863: #####################################################################
1864:
1865: =pod
1866:
1867: =item MySQL Table Description
1868:
1869: MySQL table creation requires a precise description of the data to be
1870: stored. The use of the correct types to hold data is vital to efficient
1871: storage and quick retrieval of records. The columns must be described in
1872: the following format:
1873:
1874: =cut
1875:
1.170 matthew 1876: #####################################################################
1877: #####################################################################
1.204 matthew 1878: #
1879: # These should probably be scoped but I don't have time right now...
1880: #
1881: my @Datatypes;
1882: my @Fullindicies;
1.147 matthew 1883:
1.144 matthew 1884: ######################################################################
1885: ######################################################################
1886:
1887: =pod
1888:
1.146 matthew 1889: =item &create_results_table()
1890:
1891: Creates the table of search results by calling lonmysql. Stores the
1892: table id in $ENV{'form.table'}
1893:
1894: Inputs: none.
1895:
1896: Returns: the identifier of the table on success, undef on error.
1897:
1898: =cut
1899:
1900: ######################################################################
1901: ######################################################################
1.204 matthew 1902: sub set_up_table_structure {
1903: my ($datatypes,$fullindicies) =
1904: &LONCAPA::lonmetadata::describe_metadata_storage();
1.212 matthew 1905: # Copy the table description before modifying it...
1906: @Datatypes = @{$datatypes};
1907: unshift(@Datatypes,{name => 'id',
1.204 matthew 1908: type => 'MEDIUMINT',
1909: restrictions => 'UNSIGNED NOT NULL',
1910: primary_key => 'yes',
1911: auto_inc => 'yes' });
1912: @Fullindicies = @{$fullindicies};
1913: return;
1914: }
1915:
1.146 matthew 1916: sub create_results_table {
1.204 matthew 1917: &set_up_table_structure();
1.146 matthew 1918: my $table = &Apache::lonmysql::create_table
1.170 matthew 1919: ( { columns => \@Datatypes,
1.172 matthew 1920: FULLTEXT => [{'columns' => \@Fullindicies},],
1.146 matthew 1921: } );
1922: if (defined($table)) {
1923: $ENV{'form.table'} = $table;
1924: return $table;
1925: }
1926: return undef; # Error...
1927: }
1.148 matthew 1928:
1.146 matthew 1929: ######################################################################
1930: ######################################################################
1931:
1932: =pod
1933:
1.150 matthew 1934: =item Search Status update functions
1.144 matthew 1935:
1.150 matthew 1936: Each of the following functions changes the values of one of the
1937: input fields used to display the search status to the user. The names
1938: should be explanatory.
1.144 matthew 1939:
1.150 matthew 1940: Inputs: Apache request handler ($r), text to display.
1.148 matthew 1941:
1.150 matthew 1942: Returns: Nothing.
1.148 matthew 1943:
1944: =over 4
1945:
1946: =item &update_count_status()
1947:
1.150 matthew 1948: =item &update_status()
1.148 matthew 1949:
1.150 matthew 1950: =item &update_seconds()
1.148 matthew 1951:
1952: =back
1953:
1954: =cut
1955:
1956: ######################################################################
1957: ######################################################################
1958: sub update_count_status {
1959: my ($r,$text) = @_;
1960: $text =~ s/\'/\\\'/g;
1961: $r->print
1962: ("<script>document.statusform.count.value = ' $text'</script>\n");
1963: $r->rflush();
1964: }
1965:
1.150 matthew 1966: sub update_status {
1.148 matthew 1967: my ($r,$text) = @_;
1968: $text =~ s/\'/\\\'/g;
1969: $r->print
1.150 matthew 1970: ("<script>document.statusform.status.value = ' $text'</script>\n");
1.148 matthew 1971: $r->rflush();
1972: }
1973:
1.214 matthew 1974: {
1975: my $max_time = 40; # seconds for the search to complete
1976: my $start_time = 0;
1977: my $last_time = 0;
1978:
1979: sub reset_timing {
1980: $start_time = 0;
1981: $last_time = 0;
1982: }
1983:
1984: sub time_left {
1985: if ($start_time == 0) {
1986: $start_time = time;
1987: }
1988: my $time_left = $max_time - (time - $start_time);
1989: $time_left = 0 if ($time_left < 0);
1990: return $time_left;
1991: }
1992:
1.150 matthew 1993: sub update_seconds {
1.214 matthew 1994: my ($r) = @_;
1995: my $time = &time_left();
1996: if (($last_time-$time) > 0) {
1997: $r->print("<script>".
1998: "document.statusform.seconds.value = '$time'".
1999: "</script>\n");
2000: $r->rflush();
2001: }
2002: $last_time = $time;
2003: }
2004:
1.148 matthew 2005: }
2006:
2007: ######################################################################
2008: ######################################################################
2009:
2010: =pod
2011:
1.204 matthew 2012: =item &revise_button()
1.151 matthew 2013:
2014: Inputs: None
2015:
2016: Returns: html string for a 'revise search' button.
2017:
2018: =cut
2019:
2020: ######################################################################
2021: ######################################################################
2022: sub revise_button {
2023: my $revise_phase = 'disp_basic';
2024: $revise_phase = 'disp_adv' if ($ENV{'form.searchmode'} eq 'advanced');
2025: my $newloc = '/adm/searchcat'.
2026: '?persistent_db_id='.$ENV{'form.persistent_db_id'}.
1.158 matthew 2027: '&cleargroupsort=1'.
1.151 matthew 2028: '&phase='.$revise_phase;
2029: my $result = qq{<input type="button" value="Revise search" name="revise"} .
2030: qq{ onClick="parent.location='$newloc';" /> };
2031: return $result;
2032: }
2033:
2034: ######################################################################
2035: ######################################################################
2036:
2037: =pod
2038:
1.204 matthew 2039: =item &run_search()
2040:
2041: Executes a search query by sending it the the other servers and putting the
2042: results into MySQL.
1.144 matthew 2043:
2044: =cut
2045:
2046: ######################################################################
2047: ######################################################################
2048: sub run_search {
1.146 matthew 2049: my ($r,$query,$customquery,$customshow,$serverlist,$pretty_string) = @_;
1.196 matthew 2050: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.150 matthew 2051: my $connection = $r->connection;
1.144 matthew 2052: #
1.146 matthew 2053: # Print run_search header
2054: #
1.151 matthew 2055: $r->print(<<END);
2056: <html>
2057: <head><title>Search Status</title></head>
1.155 matthew 2058: $bodytag
1.151 matthew 2059: <form name="statusform" action="" method="post">
2060: <input type="hidden" name="Queue" value="" />
2061: END
2062: # Check to see if $pretty_string has more than one carriage return.
2063: # Assume \n s are following <br /> s and truncate the value.
2064: # (there is probably a better way)...
1.152 matthew 2065: my @Lines = split /<br \/>/,$pretty_string;
2066: if (@Lines > 2) {
2067: $pretty_string = join '<br \>',(@Lines[0..2],'....<br />');
1.151 matthew 2068: }
1.214 matthew 2069: $r->print(&mt("Search: [_1]",$pretty_string));
1.146 matthew 2070: $r->rflush();
2071: #
1.145 matthew 2072: # Determine the servers we need to contact.
1.144 matthew 2073: my @Servers_to_contact;
2074: if (defined($serverlist)) {
1.152 matthew 2075: if (ref($serverlist) eq 'ARRAY') {
2076: @Servers_to_contact = @$serverlist;
2077: } else {
2078: @Servers_to_contact = ($serverlist);
2079: }
1.144 matthew 2080: } else {
2081: @Servers_to_contact = sort(keys(%Apache::lonnet::libserv));
2082: }
2083: my %Server_status;
1.214 matthew 2084: #
2085: # Check on the mysql table we will use to store results.
1.146 matthew 2086: my $table =$ENV{'form.table'};
1.150 matthew 2087: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
1.147 matthew 2088: $r->print("Unable to determine table id to store search results in.".
1.148 matthew 2089: "The search has been aborted.</body></html>");
1.147 matthew 2090: return;
2091: }
2092: my $table_status = &Apache::lonmysql::check_table($table);
2093: if (! defined($table_status)) {
2094: $r->print("Unable to determine status of table.</body></html>");
2095: &Apache::lonnet::logthis("Bogus table id of $table for ".
2096: "$ENV{'user.name'} @ $ENV{'user.domain'}");
2097: &Apache::lonnet::logthis("lonmysql error = ".
1.144 matthew 2098: &Apache::lonmysql::get_error());
1.147 matthew 2099: return;
2100: }
2101: if (! $table_status) {
1.204 matthew 2102: &Apache::lonnet::logthis("lonmysql error = ".
2103: &Apache::lonmysql::get_error());
2104: &Apache::lonnet::logthis("lonmysql debug = ".
2105: &Apache::lonmysql::get_debug());
2106: &Apache::lonnet::logthis('table status = "'.$table_status.'"');
1.147 matthew 2107: $r->print("The table id,$table, we tried to use is invalid.".
1.148 matthew 2108: "The search has been aborted.</body></html>");
1.144 matthew 2109: return;
2110: }
1.145 matthew 2111: ##
1.146 matthew 2112: ## Prepare for the big loop.
1.144 matthew 2113: my $hitcountsum;
2114: my $server;
2115: my $status;
1.151 matthew 2116: my $revise = &revise_button();
1.148 matthew 2117: $r->print(<<END);
2118: <table>
1.151 matthew 2119: <tr><th>Status</th><th>Total Matches</th><th>Time Remaining</th><th></th></tr>
1.148 matthew 2120: <tr>
1.150 matthew 2121: <td><input type="text" name="status" value="" size="30" /></td>
2122: <td><input type="text" name="count" value="" size="10" /></td>
2123: <td><input type="text" name="seconds" value="" size="8" /></td>
1.151 matthew 2124: <td>$revise</td>
1.148 matthew 2125: </tr>
2126: </table>
2127: </form>
2128: END
2129: $r->rflush();
1.214 matthew 2130: &reset_timing();
2131: &update_seconds($r);
2132: &update_status($r,&mt('contacting [_1]',$Servers_to_contact[0]));
2133: while (&time_left() &&
1.144 matthew 2134: ((@Servers_to_contact) || keys(%Server_status))) {
1.214 matthew 2135: &update_seconds($r);
2136: #
2137: # Send out a search request
1.144 matthew 2138: if (@Servers_to_contact) {
2139: # Contact one server
2140: my $server = shift(@Servers_to_contact);
1.214 matthew 2141: &update_status($r,&mt('contacting [_1]',$server));
1.144 matthew 2142: my $reply=&Apache::lonnet::metadata_query($query,$customquery,
2143: $customshow,[$server]);
2144: ($server) = keys(%$reply);
2145: $Server_status{$server} = $reply->{$server};
2146: } else {
1.150 matthew 2147: # wait a sec. to give time for files to be written
2148: # This sleep statement is here instead of outside the else
2149: # block because we do not want to pause if we have servers
2150: # left to contact.
1.183 matthew 2151: if (scalar (keys(%Server_status))) {
2152: &update_status($r,
1.214 matthew 2153: &mt('waiting on [_1]',join(' ',keys(%Server_status))));
1.183 matthew 2154: }
1.150 matthew 2155: sleep(1);
1.144 matthew 2156: }
1.159 matthew 2157: #
2158: # Loop through the servers we have contacted but do not
2159: # have results from yet, looking for results.
1.144 matthew 2160: while (my ($server,$status) = each(%Server_status)) {
1.150 matthew 2161: last if ($connection->aborted());
1.214 matthew 2162: &update_seconds($r);
1.144 matthew 2163: if ($status eq 'con_lost') {
2164: delete ($Server_status{$server});
2165: next;
2166: }
2167: $status=~/^([\.\w]+)$/;
2168: my $datafile=$r->dir_config('lonDaemons').'/tmp/'.$1;
2169: if (-e $datafile && ! -e "$datafile.end") {
1.214 matthew 2170: &update_status($r,&mt('Receiving results from [_1]',$server));
1.144 matthew 2171: next;
2172: }
1.150 matthew 2173: last if ($connection->aborted());
1.144 matthew 2174: if (-e "$datafile.end") {
1.214 matthew 2175: &update_status($r,&mt('Reading results from [_1]',$server));
1.144 matthew 2176: if (-z "$datafile") {
2177: delete($Server_status{$server});
2178: next;
2179: }
2180: my $fh;
2181: if (!($fh=Apache::File->new($datafile))) {
1.146 matthew 2182: $r->print("Unable to open search results file for ".
1.145 matthew 2183: "server $server. Omitting from search");
1.150 matthew 2184: delete($Server_status{$server});
2185: next;
1.144 matthew 2186: }
2187: # Read in the whole file.
2188: while (my $result = <$fh>) {
1.150 matthew 2189: last if ($connection->aborted());
1.214 matthew 2190: #
2191: # Records are stored one per line
1.144 matthew 2192: chomp($result);
1.214 matthew 2193: next if (! $result);
2194: #
1.144 matthew 2195: # Parse the result.
2196: my %Fields = &parse_raw_result($result,$server);
2197: $Fields{'hostname'} = $server;
1.214 matthew 2198: #
2199: # Skip based on copyright
1.144 matthew 2200: next if (! ©right_check(\%Fields));
1.214 matthew 2201: #
1.144 matthew 2202: # Store the result in the mysql database
2203: my $result = &Apache::lonmysql::store_row($table,\%Fields);
2204: if (! defined($result)) {
1.146 matthew 2205: $r->print(&Apache::lonmysql::get_error());
1.144 matthew 2206: }
1.214 matthew 2207: #
1.144 matthew 2208: $hitcountsum ++;
1.214 matthew 2209: &update_seconds($r);
1.150 matthew 2210: if ($hitcountsum % 50 == 0) {
2211: &update_count_status($r,$hitcountsum);
2212: }
1.214 matthew 2213: }
1.144 matthew 2214: $fh->close();
2215: # $server is only deleted if the results file has been
2216: # found and (successfully) opened. This may be a bad idea.
2217: delete($Server_status{$server});
2218: }
1.150 matthew 2219: last if ($connection->aborted());
1.148 matthew 2220: &update_count_status($r,$hitcountsum);
1.144 matthew 2221: }
1.150 matthew 2222: last if ($connection->aborted());
1.214 matthew 2223: &update_seconds($r);
1.144 matthew 2224: }
1.214 matthew 2225: &update_status($r,&mt('Search Complete [_1]',$server));
2226: &update_seconds($r);
1.204 matthew 2227: #
1.214 matthew 2228: &Apache::lonmysql::disconnect_from_db(); # This is unneccessary
1.204 matthew 2229: #
1.144 matthew 2230: # We have run out of time or run out of servers to talk to and
1.214 matthew 2231: # results to get, so let the client know the top frame needs to be
2232: # loaded from /adm/searchcat
1.146 matthew 2233: $r->print("</body></html>");
1.153 matthew 2234: if ($ENV{'form.catalogmode'} ne 'groupsearch') {
2235: $r->print("<script>".
2236: "window.location='/adm/searchcat?".
2237: "phase=sort&".
2238: "persistent_db_id=$ENV{'form.persistent_db_id'}';".
2239: "</script>");
2240: }
1.144 matthew 2241: return;
2242: }
2243:
2244: ######################################################################
2245: ######################################################################
1.204 matthew 2246:
1.144 matthew 2247: =pod
2248:
1.204 matthew 2249: =item &prev_next_buttons()
2250:
2251: Returns html for the previous and next buttons on the search results page.
1.144 matthew 2252:
2253: =cut
2254:
2255: ######################################################################
2256: ######################################################################
1.146 matthew 2257: sub prev_next_buttons {
1.145 matthew 2258: my ($current_min,$show,$total,$parms) = @_;
2259: return '' if ($show eq 'all'); # No links if you get them all at once.
1.214 matthew 2260: #
2261: # Create links
1.145 matthew 2262: my $prev_min = $current_min - $show;
1.151 matthew 2263: $prev_min = 1 if $prev_min < 1;
1.214 matthew 2264: my $prevlink =
2265: qq{<a href="/adm/searchcat?$parms&start=$prev_min&show=$show">};
2266: #
1.145 matthew 2267: my $next_min = $current_min + $show;
1.146 matthew 2268: $next_min = $current_min if ($next_min > $total);
1.214 matthew 2269: my $nextlink =
2270: qq{<a href="/adm/searchcat?$parms&start=$next_min&show=$show">};
2271: my $reloadlink =
2272: qq{<a href="/adm/searchcat?$parms&start=$current_min&$show=$show">};
2273: #
2274: # Determine which parameters to pass
2275: my $String = '[_1]prev[_2] [_3]reload[_4] [_5]next[_6]';
2276: if ($prev_min == $current_min) {
2277: $String =~ s:\[_[12]\]::g;
2278: }
2279: if ($next_min == $current_min) {
2280: $String =~ s:\[_[56]\]::g;
2281: }
2282: my $links = &mt($String,
2283: $prevlink, '</a>',
2284: $reloadlink,'</a>',
2285: $nextlink, '</a>');
1.145 matthew 2286: return $links;
1.144 matthew 2287: }
1.204 matthew 2288:
1.144 matthew 2289: ######################################################################
2290: ######################################################################
2291:
2292: =pod
2293:
1.204 matthew 2294: =item &display_results()
2295:
2296: Prints the results out for selection and perusal.
1.144 matthew 2297:
2298: =cut
2299:
2300: ######################################################################
2301: ######################################################################
2302: sub display_results {
1.196 matthew 2303: my ($r,$importbutton,$closebutton,$diropendb) = @_;
1.150 matthew 2304: my $connection = $r->connection;
2305: $r->print(&search_results_header($importbutton,$closebutton));
1.144 matthew 2306: ##
2307: ## Set viewing function
2308: ##
2309: my $viewfunction = $Views{$ENV{'form.viewselect'}};
2310: if (!defined($viewfunction)) {
2311: $r->print("Internal Error - Bad view selected.\n");
2312: $r->rflush();
2313: return;
2314: }
2315: ##
1.158 matthew 2316: ## $checkbox_num is a count of the number of checkboxes output on the
2317: ## page this is used only during catalogmode=groupsearch.
2318: my $checkbox_num = 0;
2319: ##
1.144 matthew 2320: ## Get the catalog controls setup
2321: ##
1.146 matthew 2322: my $action = "/adm/searchcat?phase=results";
2323: ##
1.204 matthew 2324: ## Deal with groupsearch by opening the groupsearch db file.
1.146 matthew 2325: if ($ENV{'form.catalogmode'} eq 'groupsearch') {
2326: if (! tie(%groupsearch_db,'GDBM_File',$diropendb,
1.148 matthew 2327: &GDBM_WRCREAT(),0640)) {
1.150 matthew 2328: $r->print('Unable to store import results.</form></body></html>');
1.146 matthew 2329: $r->rflush();
2330: return;
2331: }
1.144 matthew 2332: }
1.145 matthew 2333: ##
2334: ## Prepare the table for querying
1.144 matthew 2335: my $table = $ENV{'form.table'};
1.151 matthew 2336: return if (! &ensure_db_and_table($r,$table));
1.145 matthew 2337: ##
2338: ## Get the number of results
2339: my $total_results = &Apache::lonmysql::number_of_rows($table);
2340: if (! defined($total_results)) {
1.150 matthew 2341: $r->print("A MySQL error has occurred.</form></body></html>");
1.145 matthew 2342: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
2343: " of rows in table ".$table);
2344: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
2345: return;
2346: }
2347: ##
2348: ## Determine how many results we need to get
1.151 matthew 2349: $ENV{'form.start'} = 1 if (! exists($ENV{'form.start'}));
2350: $ENV{'form.show'} = 'all' if (! exists($ENV{'form.show'}));
1.146 matthew 2351: my $min = $ENV{'form.start'};
1.145 matthew 2352: my $max;
2353: if ($ENV{'form.show'} eq 'all') {
2354: $max = $total_results ;
2355: } else {
1.151 matthew 2356: $max = $min + $ENV{'form.show'} - 1;
1.146 matthew 2357: $max = $total_results if ($max > $total_results);
1.145 matthew 2358: }
2359: ##
2360: ## Output links (if necessary) for 'prev' and 'next' pages.
1.146 matthew 2361: $r->print
1.148 matthew 2362: ('<center>'.
1.146 matthew 2363: &prev_next_buttons($min,$ENV{'form.show'},$total_results,
2364: "table=".$ENV{'form.table'}.
2365: "&phase=results".
2366: "&persistent_db_id=".$ENV{'form.persistent_db_id'})
1.148 matthew 2367: ."</center>\n"
1.146 matthew 2368: );
1.150 matthew 2369: if ($total_results == 0) {
1.214 matthew 2370: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2">'.
1.187 www 2371: '<h3>'.&mt('There are currently no results').'.</h3>'.
1.150 matthew 2372: "</form></body></html>");
2373: return;
2374: } else {
2375: $r->print
2376: ("<center>Results $min to $max out of $total_results</center>\n");
2377: }
1.145 matthew 2378: ##
2379: ## Get results from MySQL table
2380: my @Results = &Apache::lonmysql::get_rows($table,
1.151 matthew 2381: 'id>='.$min.' AND id<='.$max);
1.145 matthew 2382: ##
2383: ## Loop through the results and output them.
1.144 matthew 2384: foreach my $row (@Results) {
1.150 matthew 2385: if ($connection->aborted()) {
1.162 www 2386: &cleanup();
1.150 matthew 2387: return;
2388: }
1.144 matthew 2389: my %Fields = %{&parse_row(@$row)};
1.145 matthew 2390: my $output="<p>\n";
1.210 matthew 2391: if (! defined($Fields{'title'}) || $Fields{'title'} eq '') {
2392: $Fields{'title'} = 'Untitled';
2393: }
1.158 matthew 2394: my $prefix=&catalogmode_output($Fields{'title'},$Fields{'url'},
2395: $Fields{'id'},$checkbox_num++);
1.144 matthew 2396: # Render the result into html
1.150 matthew 2397: $output.= &$viewfunction($prefix,%Fields);
1.145 matthew 2398: # Print them out as they come in.
1.144 matthew 2399: $r->print($output);
2400: $r->rflush();
2401: }
2402: if (@Results < 1) {
1.187 www 2403: $r->print(&mt("There were no results matching your query"));
1.147 matthew 2404: } else {
2405: $r->print
1.148 matthew 2406: ('<center>'.
1.147 matthew 2407: &prev_next_buttons($min,$ENV{'form.show'},$total_results,
2408: "table=".$ENV{'form.table'}.
2409: "&phase=results".
2410: "&persistent_db_id=".
2411: $ENV{'form.persistent_db_id'})
1.148 matthew 2412: ."</center>\n"
1.147 matthew 2413: );
1.144 matthew 2414: }
1.150 matthew 2415: $r->print("</form></body></html>");
1.144 matthew 2416: $r->rflush();
1.150 matthew 2417: untie %groupsearch_db if (tied(%groupsearch_db));
1.144 matthew 2418: return;
2419: }
2420:
2421: ######################################################################
2422: ######################################################################
2423:
2424: =pod
2425:
1.158 matthew 2426: =item &catalogmode_output($title,$url,$fnum,$checkbox_num)
1.145 matthew 2427:
2428: Returns html needed for the various catalog modes. Gets inputs from
1.158 matthew 2429: $ENV{'form.catalogmode'}. Stores data in %groupsearch_db.
1.145 matthew 2430:
2431: =cut
2432:
2433: ######################################################################
2434: ######################################################################
2435: sub catalogmode_output {
2436: my $output = '';
1.158 matthew 2437: my ($title,$url,$fnum,$checkbox_num) = @_;
1.145 matthew 2438: if ($ENV{'form.catalogmode'} eq 'interactive') {
1.150 matthew 2439: $title=~ s/\'/\\\'/g;
1.145 matthew 2440: if ($ENV{'form.catalogmode'} eq 'interactive') {
2441: $output.=<<END
2442: <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
2443: onClick="javascript:select_data('$title','$url')">
2444: </font>
2445: END
2446: }
1.150 matthew 2447: } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
1.145 matthew 2448: $groupsearch_db{"pre_${fnum}_link"}=$url;
2449: $groupsearch_db{"pre_${fnum}_title"}=$title;
2450: $output.=<<END;
2451: <font size='-1'>
2452: <input type="checkbox" name="returnvalues" value="SELECT"
1.158 matthew 2453: onClick="javascript:queue($checkbox_num,$fnum)" />
1.145 matthew 2454: </font>
2455: END
2456: }
2457: return $output;
2458: }
2459: ######################################################################
2460: ######################################################################
2461:
2462: =pod
2463:
1.204 matthew 2464: =item &parse_row()
1.144 matthew 2465:
2466: Parse a row returned from the database.
2467:
2468: =cut
2469:
2470: ######################################################################
2471: ######################################################################
2472: sub parse_row {
2473: my @Row = @_;
2474: my %Fields;
1.204 matthew 2475: if (! scalar(@Datatypes)) {
2476: &set_up_table_structure();
2477: }
1.144 matthew 2478: for (my $i=0;$i<=$#Row;$i++) {
1.170 matthew 2479: $Fields{$Datatypes[$i]->{'name'}}=&Apache::lonnet::unescape($Row[$i]);
1.144 matthew 2480: }
2481: $Fields{'language'} =
1.198 www 2482: &Apache::loncommon::languagedescription($Fields{'language'});
1.144 matthew 2483: $Fields{'copyrighttag'} =
2484: &Apache::loncommon::copyrightdescription($Fields{'copyright'});
2485: $Fields{'mimetag'} =
2486: &Apache::loncommon::filedescription($Fields{'mime'});
2487: return \%Fields;
2488: }
1.126 matthew 2489:
2490: ###########################################################
2491: ###########################################################
2492:
2493: =pod
2494:
2495: =item &parse_raw_result()
2496:
2497: Takes a line from the file of results and parse it. Returns a hash
1.198 www 2498: with keys according to column labels
1.126 matthew 2499:
2500: In addition, the following tags are set by calling the appropriate
1.198 www 2501: lonnet function: 'language', 'copyrighttag', 'mimetag'.
1.126 matthew 2502:
2503: The 'title' field is set to "Untitled" if the title field is blank.
2504:
2505: 'abstract' and 'keywords' are truncated to 200 characters.
2506:
2507: =cut
2508:
2509: ###########################################################
2510: ###########################################################
2511: sub parse_raw_result {
2512: my ($result,$hostname) = @_;
1.204 matthew 2513: # conclude from self to others regarding fields
1.206 matthew 2514: my %Fields=&LONCAPA::lonmetadata::metadata_col_to_hash
2515: (map {
2516: &Apache::lonnet::unescape($_);
2517: } (split(/\,/,$result)) );
1.126 matthew 2518: return %Fields;
2519: }
2520:
2521: ###########################################################
2522: ###########################################################
2523:
2524: =pod
2525:
2526: =item &handle_custom_fields()
2527:
2528: =cut
2529:
2530: ###########################################################
2531: ###########################################################
2532: sub handle_custom_fields {
2533: my @results = @{shift()};
2534: my $customshow='';
2535: my $extrashow='';
2536: my @customfields;
2537: if ($ENV{'form.customshow'}) {
2538: $customshow=$ENV{'form.customshow'};
2539: $customshow=~s/[^\w\s]//g;
2540: my @fields=map {
2541: "<font color=\"#008000\">$_:</font><!-- $_ -->";
2542: } split(/\s+/,$customshow);
2543: @customfields=split(/\s+/,$customshow);
2544: if ($customshow) {
2545: $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
2546: }
2547: }
2548: my $customdata='';
2549: my %customhash;
2550: foreach my $result (@results) {
2551: if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
2552: my $tmp=$result;
2553: $tmp=~s/^custom\=//;
2554: my ($k,$v)=map {&Apache::lonnet::unescape($_);
2555: } split(/\,/,$tmp);
2556: $customhash{$k}=$v;
2557: }
2558: }
2559: return ($extrashow,\@customfields,\%customhash);
1.41 harris41 2560: }
2561:
1.122 matthew 2562: ######################################################################
2563: ######################################################################
2564:
1.125 matthew 2565: =pod
2566:
1.204 matthew 2567: =item &search_results_header()
1.125 matthew 2568:
1.130 matthew 2569: Output the proper html headers and javascript code to deal with different
2570: calling modes.
2571:
2572: Takes most inputs directly from %ENV, except $mode.
2573:
2574: =over 4
2575:
2576: =item $mode is either (at this writing) 'Basic' or 'Advanced'
2577:
2578: =back
1.126 matthew 2579:
1.130 matthew 2580: The following environment variables are checked:
1.126 matthew 2581:
2582: =over 4
2583:
2584: =item 'form.catalogmode'
2585:
2586: Checked for 'interactive' and 'groupsearch'.
2587:
2588: =item 'form.mode'
2589:
2590: Checked for existance & 'edit' mode.
2591:
2592: =item 'form.form'
2593:
1.191 albertel 2594: Contains the name of the form that has the input fields to set
2595:
1.126 matthew 2596: =item 'form.element'
2597:
1.191 albertel 2598: the name of the input field to put the URL into
2599:
2600: =item 'form.titleelement'
2601:
2602: the name of the input field to put the title into
2603:
1.126 matthew 2604: =back
2605:
1.125 matthew 2606: =cut
2607:
2608: ######################################################################
2609: ######################################################################
2610: sub search_results_header {
1.150 matthew 2611: my ($importbutton,$closebutton) = @_;
1.196 matthew 2612: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.125 matthew 2613: my $result = '';
2614: # output beginning of search page
2615: # conditional output of script functions dependent on the mode in
2616: # which the search was invoked
2617: if ($ENV{'form.catalogmode'} eq 'interactive'){
2618: if (! exists($ENV{'form.mode'}) || $ENV{'form.mode'} ne 'edit') {
2619: $result.=<<SCRIPT;
2620: <script type="text/javascript">
2621: function select_data(title,url) {
2622: changeTitle(title);
2623: changeURL(url);
1.150 matthew 2624: parent.close();
1.125 matthew 2625: }
2626: function changeTitle(val) {
1.153 matthew 2627: if (parent.opener.inf.document.forms.resinfo.elements.t) {
2628: parent.opener.inf.document.forms.resinfo.elements.t.value=val;
1.125 matthew 2629: }
2630: }
2631: function changeURL(val) {
1.153 matthew 2632: if (parent.opener.inf.document.forms.resinfo.elements.u) {
2633: parent.opener.inf.document.forms.resinfo.elements.u.value=val;
1.125 matthew 2634: }
2635: }
2636: </script>
2637: SCRIPT
2638: } elsif ($ENV{'form.mode'} eq 'edit') {
2639: my $form = $ENV{'form.form'};
2640: my $element = $ENV{'form.element'};
1.191 albertel 2641: my $titleelement = $ENV{'form.titleelement'};
2642: my $changetitle;
2643: if (!$titleelement) {
2644: $changetitle='function changeTitle(val) {}';
2645: } else {
2646: $changetitle=<<END;
2647: function changeTitle(val) {
2648: if (parent.targetwin.document) {
2649: parent.targetwin.document.forms["$form"].elements["$titleelement"].value=val;
2650: } else {
2651: var url = 'forms[\"$form\"].elements[\"$titleelement\"].value';
2652: alert("Unable to transfer data to "+url);
2653: }
2654: }
2655: END
2656: }
2657:
1.125 matthew 2658: $result.=<<SCRIPT;
2659: <script type="text/javascript">
2660: function select_data(title,url) {
2661: changeURL(url);
1.191 albertel 2662: changeTitle(title);
1.150 matthew 2663: parent.close();
1.125 matthew 2664: }
1.191 albertel 2665: $changetitle
1.125 matthew 2666: function changeURL(val) {
1.150 matthew 2667: if (parent.targetwin.document) {
2668: parent.targetwin.document.forms["$form"].elements["$element"].value=val;
1.125 matthew 2669: } else {
2670: var url = 'forms[\"$form\"].elements[\"$element\"].value';
2671: alert("Unable to transfer data to "+url);
2672: }
2673: }
2674: </script>
2675: SCRIPT
2676: }
2677: }
2678: $result.=<<SCRIPT if $ENV{'form.catalogmode'} eq 'groupsearch';
2679: <script type="text/javascript">
1.158 matthew 2680: function queue(checkbox_num,val) {
1.185 matthew 2681: if (document.forms.results.returnvalues.length != "undefined" &&
2682: typeof(document.forms.results.returnvalues.length) == "number") {
2683: if (document.forms.results.returnvalues[checkbox_num].checked) {
2684: parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
2685: } else {
2686: parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
2687: }
1.150 matthew 2688: } else {
1.185 matthew 2689: if (document.forms.results.returnvalues.checked) {
2690: parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
2691: } else {
2692: parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
2693: }
1.150 matthew 2694: }
1.125 matthew 2695: }
2696: function select_group() {
1.150 matthew 2697: parent.window.location=
1.125 matthew 2698: "/adm/groupsort?mode=$ENV{'form.mode'}&catalogmode=groupsearch&acts="+
1.150 matthew 2699: parent.statusframe.document.forms.statusform.elements.Queue.value;
1.125 matthew 2700: }
2701: </script>
2702: SCRIPT
1.130 matthew 2703: $result.=<<END;
2704: </head>
1.155 matthew 2705: $bodytag
1.150 matthew 2706: <form name="results" method="post" action="" >
2707: <input type="hidden" name="Queue" value="" />
2708: $importbutton
1.130 matthew 2709: END
1.125 matthew 2710: return $result;
2711: }
2712:
2713: ######################################################################
2714: ######################################################################
1.146 matthew 2715: sub search_status_header {
1.196 matthew 2716: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.146 matthew 2717: return <<ENDSTATUS;
2718: <html><head><title>Search Status</title></head>
1.155 matthew 2719: $bodytag
1.146 matthew 2720: <h3>Search Status</h3>
2721: Sending search request to LON-CAPA servers.<br />
2722: ENDSTATUS
2723: }
2724:
1.150 matthew 2725: sub results_link {
2726: my $basic_link = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
2727: "&persistent_db_id=".$ENV{'form.persistent_db_id'};
2728: my $results_link = $basic_link."&phase=results".
1.151 matthew 2729: "&pause=1"."&start=1";
1.150 matthew 2730: return $results_link;
2731: }
2732:
1.146 matthew 2733: ######################################################################
2734: ######################################################################
2735: sub print_frames_interface {
2736: my $r = shift;
2737: my $basic_link = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
2738: "&persistent_db_id=".$ENV{'form.persistent_db_id'};
2739: my $run_search_link = $basic_link."&phase=run_search";
1.150 matthew 2740: my $results_link = &results_link();
1.146 matthew 2741: my $result = <<"ENDFRAMES";
2742: <html>
2743: <head>
1.150 matthew 2744: <script>
2745: var targetwin = opener;
1.158 matthew 2746: var queue = '';
1.150 matthew 2747: </script>
1.146 matthew 2748: <title>LON-CAPA Digital Library Search Results</title>
2749: </head>
1.176 www 2750: <frameset rows="150,*">
1.146 matthew 2751: <frame name="statusframe" src="$run_search_link">
2752: <frame name="resultsframe" src="$results_link">
2753: </frameset>
2754: </html>
2755: ENDFRAMES
2756:
2757: $r->print($result);
2758: return;
2759: }
2760:
2761: ######################################################################
2762: ######################################################################
1.125 matthew 2763:
1.122 matthew 2764: =pod
2765:
2766: =item Metadata Viewing Functions
2767:
2768: Output is a HTML-ified string.
1.204 matthew 2769:
1.122 matthew 2770: Input arguments are title, author, subject, url, keywords, version,
2771: notes, short abstract, mime, language, creation date,
1.126 matthew 2772: last revision date, owner, copyright, hostname, and
1.122 matthew 2773: extra custom metadata to show.
2774:
2775: =over 4
2776:
2777: =item &detailed_citation_view()
2778:
2779: =cut
2780:
2781: ######################################################################
2782: ######################################################################
1.50 harris41 2783: sub detailed_citation_view {
1.150 matthew 2784: my ($prefix,%values) = @_;
1.218 ! matthew 2785: my $icon=
! 2786: my $result;
! 2787: $result .= '<b>'.$prefix.
! 2788: '<img src="'.&Apache::loncommon::icon($values{'url'}).' " />'.
! 2789: '<a href="http://'.$ENV{'HTTP_HOST'}.$values{'url'}.'" '.
! 2790: 'target="search_preview">'.$values{'title'}."</a></b>\n";
! 2791: $result .= "<p>\n";
! 2792: $result .= '<b>'.$values{'author'}.'</b>,'.
! 2793: ' <i>'.$values{'owner'}.'</i><br />';
! 2794: foreach my $field
! 2795: (
! 2796: { name=>'subject',
! 2797: translate => '<b>Subject:</b> [_1]',},
! 2798: { name=>'keywords',
! 2799: translate => '<b>Keywords:</b> [_1]',},
! 2800: { name=>'notes',
! 2801: translate => '<b>Notes:</b> [_1]',},
! 2802: { name=>'mimetag',
! 2803: translate => '<b>MIME Type:</b> [_1]',},
! 2804: { name=>'standards',
! 2805: translate => '<b>Standards:</b>[_1]',},
! 2806: { name=>'copyrighttag',
! 2807: translate => '<b>Copyright/Distribution:</b> [_1]',},
! 2808: { name=>'stdno',
! 2809: translate => '<b>Number of Students:</b> [_1]',},
! 2810: { name=>'avetries',
! 2811: translate => '<b>Average Tries:</b> [_1]',},
! 2812: { name=>'disc',
! 2813: translate => '<b>Degree of Discrimination:</b> [_1]',},
! 2814: { name=>'difficulty',
! 2815: translate => '<b>Degree of Difficulty:</b> [_1]',},
! 2816: { name=>'clear',
! 2817: translate => '<b>Clear:</b> [_1]',},
! 2818: { name=>'depth',
! 2819: translate => '<b>Depth:</b> [_1]',},
! 2820: { name=>'helpful',
! 2821: translate => '<b>Helpful:</b> [_1]',},
! 2822: { name=>'correct',
! 2823: translate => '<b>Correcy:</b> [_1]',},
! 2824: { name=>'technical',
! 2825: translate => '<b>Technical:</b> [_1]',},
! 2826: ) {
! 2827: $result.= &mt($field->{'translate'},$values{$field->{'name'}}).
! 2828: "<br />\n";
! 2829: }
! 2830: $result .= "</p>".$values{'extrashow'}.
! 2831: '<p>'.$values{'shortabstract'}.'</p>';
! 2832: $result .= '<hr align="left" width="200" noshade />'."\n";
1.50 harris41 2833: return $result;
2834: }
2835:
1.122 matthew 2836: ######################################################################
2837: ######################################################################
2838:
2839: =pod
2840:
2841: =item &summary_view()
2842:
2843: =cut
2844: ######################################################################
2845: ######################################################################
1.50 harris41 2846: sub summary_view {
1.150 matthew 2847: my ($prefix,%values) = @_;
1.192 albertel 2848: my $icon=&Apache::loncommon::icon($values{'url'});
1.50 harris41 2849: my $result=<<END;
1.192 albertel 2850: $prefix<img src="$icon" /><a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
1.126 matthew 2851: target='search_preview'>$values{'author'}</a><br />
2852: $values{'title'}<br />
2853: $values{'owner'} -- $values{'lastrevisiondate'}<br />
2854: $values{'copyrighttag'}<br />
2855: $values{'extrashow'}
1.50 harris41 2856: </p>
1.150 matthew 2857: <hr align='left' width='200' noshade />
1.50 harris41 2858: END
2859: return $result;
2860: }
2861:
1.122 matthew 2862: ######################################################################
2863: ######################################################################
2864:
2865: =pod
2866:
1.150 matthew 2867: =item &compact_view()
2868:
2869: =cut
2870:
2871: ######################################################################
2872: ######################################################################
2873: sub compact_view {
2874: my ($prefix,%values) = @_;
1.192 albertel 2875: my $icon=&Apache::loncommon::icon($values{'url'});
1.150 matthew 2876: my $result=<<END;
1.192 albertel 2877: $prefix <img src="$icon" /> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}" target='search_preview'>
1.150 matthew 2878: $values{'title'}</a>
2879: <b>$values{'author'}</b><br />
2880: END
2881: return $result;
2882: }
2883:
2884:
2885: ######################################################################
2886: ######################################################################
2887:
2888: =pod
2889:
1.122 matthew 2890: =item &fielded_format_view()
2891:
2892: =cut
2893:
2894: ######################################################################
2895: ######################################################################
1.50 harris41 2896: sub fielded_format_view {
1.150 matthew 2897: my ($prefix,%values) = @_;
1.192 albertel 2898: my $icon=&Apache::loncommon::icon($values{'url'});
1.50 harris41 2899: my $result=<<END;
1.192 albertel 2900: $prefix <img src="$icon" />
1.126 matthew 2901: <b>URL: </b> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
2902: target='search_preview'>$values{'url'}</a>
1.56 harris41 2903: <br />
1.126 matthew 2904: <b>Title:</b> $values{'title'}<br />
2905: <b>Author(s):</b> $values{'author'}<br />
2906: <b>Subject:</b> $values{'subject'}<br />
2907: <b>Keyword(s):</b> $values{'keywords'}<br />
2908: <b>Notes:</b> $values{'notes'}<br />
2909: <b>MIME Type:</b> $values{'mimetag'}<br />
2910: <b>Language:</b> $values{'language'}<br />
2911: <b>Creation Date:</b> $values{'creationdate'}<br />
2912: <b>Last Revision Date:</b> $values{'lastrevisiondate'}<br />
2913: <b>Publisher/Owner:</b> $values{'owner'}<br />
2914: <b>Copyright/Distribution:</b> $values{'copyrighttag'}<br />
2915: <b>Repository Location:</b> $values{'hostname'}<br />
2916: <b>Abstract:</b> $values{'shortabstract'}<br />
2917: $values{'extrashow'}
1.50 harris41 2918: </p>
1.150 matthew 2919: <hr align='left' width='200' noshade />
1.50 harris41 2920: END
2921: return $result;
2922: }
2923:
1.122 matthew 2924: ######################################################################
2925: ######################################################################
2926:
2927: =pod
2928:
2929: =item &xml_sgml_view()
2930:
2931: =back
2932:
2933: =cut
2934:
2935: ######################################################################
2936: ######################################################################
1.50 harris41 2937: sub xml_sgml_view {
1.150 matthew 2938: my ($prefix,%values) = @_;
1.212 matthew 2939: my $xml = <<END;
2940: <LonCapaResource>
2941: <url>$values{'url'}</url>
2942: <title>$values{'title'}</title>
2943: <author>$values{'author'}</author>
2944: <subject>$values{'subject'}</subject>
2945: <keywords>$values{'keywords'}</keywords>
2946: <notes>$values{'notes'}</notes>
2947: <mimeInfo>
2948: <mime>$values{'mime'}</mime>
2949: <mimetag>$values{'mimetag'}</mimetag>
2950: </mimeInfo>
2951: <languageInfo>
2952: <language>$values{'language'}</language>
2953: <languagetag>$values{'languagetag'}</languagetag>
2954: </languageInfo>
2955: <creationdate>$values{'creationdate'}</creationdate>
2956: <lastrevisiondate>$values{'lastrevisiondate'}</lastrevisiondate>
2957: <owner>$values{'owner'}</owner>
2958: <copyrightInfo>
2959: <copyright>$values{'copyright'}</copyright>
2960: <copyrighttag>$values{'copyrighttag'}</copyrighttag>
2961: </copyrightInfo>
2962: <repositoryLocation>$values{'hostname'}</repositoryLocation>
2963: <shortabstract>$values{'shortabstract'}</shortabstract>
2964: </LonCapaResource>
2965: END
2966: $xml = &HTML::Entities::encode($xml,'<>&');
1.50 harris41 2967: my $result=<<END;
1.150 matthew 2968: $prefix
1.56 harris41 2969: <pre>
1.212 matthew 2970: $xml
1.56 harris41 2971: </pre>
1.126 matthew 2972: $values{'extrashow'}
1.150 matthew 2973: <hr align='left' width='200' noshade />
1.50 harris41 2974: END
2975: return $result;
1.60 harris41 2976: }
2977:
1.122 matthew 2978: ######################################################################
2979: ######################################################################
2980:
2981: =pod
2982:
2983: =item &filled() see if field is filled.
2984:
2985: =cut
2986:
2987: ######################################################################
2988: ######################################################################
1.98 harris41 2989: sub filled {
2990: my ($field)=@_;
2991: if ($field=~/\S/ && $field ne 'any') {
1.204 matthew 2992: return 1;
2993: } else {
2994: return 0;
1.61 harris41 2995: }
1.60 harris41 2996: }
2997:
1.122 matthew 2998: ######################################################################
2999: ######################################################################
3000:
3001: =pod
3002:
3003: =item &output_blank_field_error()
3004:
1.151 matthew 3005: Output a complete page that indicates the user has not filled in enough
3006: information to do a search.
3007:
3008: Inputs: $r (Apache request handle), $closebutton, $parms.
3009:
3010: Returns: nothing
3011:
3012: $parms is extra information to include in the 'Revise search request' link.
3013:
1.122 matthew 3014: =cut
3015:
3016: ######################################################################
3017: ######################################################################
1.98 harris41 3018: sub output_blank_field_error {
1.196 matthew 3019: my ($r,$closebutton,$parms,$hidden_fields)=@_;
3020: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.98 harris41 3021: # make query information persistent to allow for subsequent revision
3022: $r->print(<<BEGINNING);
3023: <html>
3024: <head>
3025: <title>The LearningOnline Network with CAPA</title>
3026: BEGINNING
3027: $r->print(<<RESULTS);
3028: </head>
1.155 matthew 3029: $bodytag
1.98 harris41 3030: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
3031: <h1>Search Catalog</h1>
3032: <form method="post" action="/adm/searchcat">
1.145 matthew 3033: $hidden_fields
1.151 matthew 3034: <a href="/adm/searchcat?$parms&persistent_db_id=$ENV{'form.persistent_db_id'}"
1.146 matthew 3035: >Revise search request</a>
1.98 harris41 3036: $closebutton
3037: <hr />
1.151 matthew 3038: <h3>Unactionable search query.</h3>
1.98 harris41 3039: <p>
1.151 matthew 3040: You did not fill in enough information for the search to be started.
3041: You need to fill in relevant fields on the search page in order
3042: for a query to be processed.
1.98 harris41 3043: </p>
3044: </body>
3045: </html>
3046: RESULTS
3047: }
3048:
1.122 matthew 3049: ######################################################################
3050: ######################################################################
3051:
3052: =pod
3053:
3054: =item &output_date_error()
3055:
3056: Output a full html page with an error message.
3057:
1.145 matthew 3058: Inputs:
3059:
3060: $r, the request pointer.
3061: $message, the error message for the user.
3062: $closebutton, the specialized close button needed for groupsearch.
3063:
1.122 matthew 3064: =cut
3065:
3066: ######################################################################
3067: ######################################################################
1.60 harris41 3068: sub output_date_error {
1.196 matthew 3069: my ($r,$message,$closebutton,$hidden_fields)=@_;
1.60 harris41 3070: # make query information persistent to allow for subsequent revision
1.196 matthew 3071: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.122 matthew 3072: $r->print(<<RESULTS);
1.60 harris41 3073: <html>
3074: <head>
3075: <title>The LearningOnline Network with CAPA</title>
3076: </head>
1.155 matthew 3077: $bodytag
1.98 harris41 3078: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
1.60 harris41 3079: <h1>Search Catalog</h1>
3080: <form method="post" action="/adm/searchcat">
1.145 matthew 3081: $hidden_fields
1.60 harris41 3082: <input type='button' value='Revise search request'
1.98 harris41 3083: onClick='this.form.submit();' />
1.60 harris41 3084: $closebutton
1.98 harris41 3085: <hr />
1.151 matthew 3086: <h3>Error</h3>
1.60 harris41 3087: <p>
3088: $message
3089: </p>
3090: </body>
3091: </html>
3092: RESULTS
1.101 harris41 3093: }
3094:
1.122 matthew 3095: ######################################################################
3096: ######################################################################
3097:
3098: =pod
3099:
3100: =item &start_fresh_session()
3101:
1.142 matthew 3102: Cleans the global %groupsearch_db by removing all fields which begin with
1.122 matthew 3103: 'pre_' or 'store'.
3104:
3105: =cut
3106:
3107: ######################################################################
3108: ######################################################################
1.101 harris41 3109: sub start_fresh_session {
1.142 matthew 3110: delete $groupsearch_db{'mode_catalog'};
3111: foreach (keys %groupsearch_db) {
1.101 harris41 3112: if ($_ =~ /^pre_/) {
1.142 matthew 3113: delete $groupsearch_db{$_};
1.101 harris41 3114: }
3115: if ($_ =~ /^store/) {
1.142 matthew 3116: delete $groupsearch_db{$_};
1.101 harris41 3117: }
1.109 harris41 3118: }
1.3 harris41 3119: }
1.1 www 3120:
3121: 1;
1.162 www 3122:
3123: sub cleanup {
1.163 www 3124: if (tied(%groupsearch_db)) {
3125: unless (untie(%groupsearch_db)) {
3126: &Apache::lonnet::logthis('Failed cleanup searchcat: groupsearch_db');
3127: }
3128: }
1.167 www 3129: &untiehash();
1.162 www 3130: &Apache::lonmysql::disconnect_from_db();
3131: }
1.98 harris41 3132:
1.1 www 3133: __END__
1.105 harris41 3134:
1.121 matthew 3135: =pod
1.105 harris41 3136:
1.121 matthew 3137: =back
1.105 harris41 3138:
3139: =cut
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