Annotation of loncom/interface/lonsearchcat.pm, revision 1.252
1.98 harris41 1: # The LearningOnline Network with CAPA
1.108 harris41 2: # Search Catalog
3: #
1.252 ! albertel 4: # $Id: lonsearchcat.pm,v 1.251 2006/02/05 20:56:57 www 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);
1.243 albertel 66: use Apache::lonnet;
1.6 harris41 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();
1.228 matthew 78: use Parse::RecDescent;
1.231 raeburn 79: use Apache::lonnavmaps;
1.1 www 80:
1.121 matthew 81: ######################################################################
82: ######################################################################
1.196 matthew 83: ##
84: ## Global variables
85: ##
1.121 matthew 86: ######################################################################
87: ######################################################################
1.196 matthew 88: my %groupsearch_db; # Database hash used to save values for the
89: # groupsearch RAT interface.
90: my %persistent_db; # gdbm hash which holds data which is supposed to
91: # persist across calls to lonsearchcat.pm
1.121 matthew 92:
1.200 www 93: # The different view modes and associated functions
94:
95: my %Views = ("detailed" => \&detailed_citation_view,
96: "summary" => \&summary_view,
97: "fielded" => \&fielded_format_view,
98: "xml" => \&xml_sgml_view,
99: "compact" => \&compact_view);
1.101 harris41 100:
1.121 matthew 101: ######################################################################
102: ######################################################################
1.98 harris41 103: sub handler {
104: my $r = shift;
1.197 www 105: # &set_defaults();
1.196 matthew 106: #
107: # set form defaults
1.145 matthew 108: #
1.196 matthew 109: my $hidden_fields;# Hold all the hidden fields used to keep track
110: # of the search system state
111: my $importbutton; # button to take the selected results and go to group
112: # sorting
113: my $diropendb; # The full path to the (temporary) search database file.
114: # This is set and used in &handler() and is also used in
115: # &output_results().
116: my $bodytag; # LON-CAPA standard body tag, gotten from
117: # &Apache::lonnet::bodytag.
118: # No title, no table, just a <body> tag.
1.157 www 119:
120: my $loaderror=&Apache::lonnet::overloaderror($r);
121: if ($loaderror) { return $loaderror; }
1.221 matthew 122: #
1.145 matthew 123: my $closebutton; # button that closes the search window
124: # This button is different for the RAT compared to
125: # normal invocation.
126: #
1.186 www 127: &Apache::loncommon::content_type($r,'text/html');
1.98 harris41 128: $r->send_http_header;
129: return OK if $r->header_only;
1.156 matthew 130: ##
131: ## Prevent caching of the search interface window. Hopefully this means
132: ## we will get the launch=1 passed in a little more.
133: &Apache::loncommon::no_cache($r);
1.145 matthew 134: ##
135: ## Pick up form fields passed in the links.
136: ##
137: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.146 matthew 138: ['catalogmode','launch','acts','mode','form','element','pause',
1.158 matthew 139: 'phase','persistent_db_id','table','start','show',
1.191 albertel 140: 'cleargroupsort','titleelement']);
1.146 matthew 141: ##
142: ## The following is a trick - we wait a few seconds if asked to so
143: ## the daemon running the search can get ahead of the daemon
144: ## printing the results. We only need (theoretically) to do
145: ## this once, so the pause indicator is deleted
146: ##
1.243 albertel 147: if (exists($env{'form.pause'})) {
1.181 matthew 148: sleep(1);
1.243 albertel 149: delete($env{'form.pause'});
1.146 matthew 150: }
1.143 matthew 151: ##
152: ## Initialize global variables
153: ##
1.121 matthew 154: my $domain = $r->dir_config('lonDefDomain');
1.213 matthew 155: $diropendb= "/home/httpd/perl/tmp/".
1.243 albertel 156: "$env{'user.domain'}_$env{'user.name'}_searchcat.db";
1.145 matthew 157: #
158: # set the name of the persistent database
1.243 albertel 159: # $env{'form.persistent_db_id'} can only have digits in it.
160: if (! exists($env{'form.persistent_db_id'}) ||
161: ($env{'form.persistent_db_id'} =~ /\D/) ||
162: ($env{'form.launch'} eq '1')) {
163: $env{'form.persistent_db_id'} = time;
1.145 matthew 164: }
1.155 matthew 165: $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.146 matthew 166: my $persistent_db_file = "/home/httpd/perl/tmp/".
1.145 matthew 167: &Apache::lonnet::escape($domain).
1.243 albertel 168: '_'.&Apache::lonnet::escape($env{'user.name'}).
169: '_'.$env{'form.persistent_db_id'}.'_persistent_search.db';
1.146 matthew 170: ##
1.209 matthew 171: &Apache::lonhtmlcommon::clear_breadcrumbs();
1.243 albertel 172: if (exists($env{'request.course.id'}) && $env{'request.course.id'} ne '') {
1.209 matthew 173: &Apache::lonhtmlcommon::add_breadcrumb
174: ({href=>'/adm/searchcat?'.
1.243 albertel 175: 'catalogmode='.$env{'form.catalogmode'}.
176: '&launch='.$env{'form.launch'}.
177: '&mode='.$env{'form.mode'},
1.209 matthew 178: text=>"Course and Catalog Search",
1.227 matthew 179: target=>'_top',
1.209 matthew 180: bug=>'Searching',});
181: } else {
182: &Apache::lonhtmlcommon::add_breadcrumb
183: ({href=>'/adm/searchcat?'.
1.243 albertel 184: 'catalogmode='.$env{'form.catalogmode'}.
185: '&launch='.$env{'form.launch'}.
186: '&mode='.$env{'form.mode'},
1.209 matthew 187: text=>"Catalog Search",
1.227 matthew 188: target=>'_top',
1.209 matthew 189: bug=>'Searching',});
190: }
191: #
1.243 albertel 192: if ($env{'form.phase'} !~ m/(basic|adv|course)_search/) {
1.221 matthew 193: if (! &get_persistent_form_data($persistent_db_file)) {
1.243 albertel 194: if ($env{'form.phase'} =~ /(run_search|results)/) {
1.221 matthew 195: &Apache::lonnet::logthis('lonsearchcat:'.
196: 'Unable to recover data from '.
197: $persistent_db_file);
1.238 albertel 198: my $html=&Apache::lonxml::xmlbegin();
199: $r->print(<<END);
200: $html
201: <head>
202: <title>LON-CAPA Search Error</title></head>
1.155 matthew 203: $bodytag
1.150 matthew 204: We were unable to retrieve data describing your search. This is a serious
205: error and has been logged. Please alert your LON-CAPA administrator.
206: </body>
207: </html>
208: END
1.221 matthew 209: return OK;
210: }
1.150 matthew 211: }
1.221 matthew 212: } else {
213: &clean_up_environment();
1.147 matthew 214: }
1.124 matthew 215: ##
1.143 matthew 216: ## Clear out old values from groupsearch database
1.124 matthew 217: ##
1.146 matthew 218: untie %groupsearch_db if (tied(%groupsearch_db));
1.243 albertel 219: if (($env{'form.cleargroupsort'} eq '1') ||
220: (($env{'form.launch'} eq '1') &&
221: ($env{'form.catalogmode'} eq 'groupsearch'))) {
1.148 matthew 222: if (tie(%groupsearch_db,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
1.101 harris41 223: &start_fresh_session();
1.142 matthew 224: untie %groupsearch_db;
1.243 albertel 225: delete($env{'form.cleargroupsort'});
1.122 matthew 226: } else {
1.155 matthew 227: # This is a stupid error to give to the user.
228: # It really tells them nothing.
1.238 albertel 229: my $html=&Apache::lonxml::xmlbegin();
230: $r->print($html.'<head></head>'.$bodytag.
1.155 matthew 231: 'Unable to tie hash to db file</body></html>');
1.101 harris41 232: return OK;
233: }
234: }
1.124 matthew 235: ##
1.150 matthew 236: ## Configure hidden fields
1.124 matthew 237: ##
1.145 matthew 238: $hidden_fields = '<input type="hidden" name="persistent_db_id" value="'.
1.243 albertel 239: $env{'form.persistent_db_id'}.'" />'."\n";
240: if (exists($env{'form.catalogmode'})) {
1.223 matthew 241: $hidden_fields .= &hidden_field('catalogmode');
1.150 matthew 242: }
1.243 albertel 243: if (exists($env{'form.form'})) {
1.223 matthew 244: $hidden_fields .= &hidden_field('form');
1.150 matthew 245: }
1.243 albertel 246: if (exists($env{'form.element'})) {
1.223 matthew 247: $hidden_fields .= &hidden_field('element');
1.150 matthew 248: }
1.243 albertel 249: if (exists($env{'form.titleelement'})) {
1.223 matthew 250: $hidden_fields .= &hidden_field('titleelement');
1.191 albertel 251: }
1.243 albertel 252: if (exists($env{'form.mode'})) {
1.223 matthew 253: $hidden_fields .= &hidden_field('mode');
1.150 matthew 254: }
255: ##
256: ## Configure dynamic components of interface
1.146 matthew 257: ##
1.243 albertel 258: if ($env{'form.catalogmode'} eq 'interactive') {
1.150 matthew 259: $closebutton="<input type='button' name='close' value='CLOSE' ";
1.243 albertel 260: if ($env{'form.phase'} =~ /(results|run_search)/) {
1.150 matthew 261: $closebutton .="onClick='parent.close()'";
262: } else {
263: $closebutton .="onClick='self.close()'";
264: }
265: $closebutton .=">\n";
1.243 albertel 266: } elsif ($env{'form.catalogmode'} eq 'groupsearch') {
1.150 matthew 267: $closebutton="<input type='button' name='close' value='CLOSE' ";
1.243 albertel 268: if ($env{'form.phase'} =~ /(results|run_search)/) {
1.150 matthew 269: $closebutton .="onClick='parent.close()'";
270: } else {
271: $closebutton .="onClick='self.close()'";
272: }
273: $closebutton .= ">";
1.98 harris41 274: $importbutton=<<END;
275: <input type='button' name='import' value='IMPORT'
276: onClick='javascript:select_group()'>
277: END
1.146 matthew 278: } else {
279: $closebutton = '';
280: $importbutton = '';
1.98 harris41 281: }
1.124 matthew 282: ##
1.146 matthew 283: ## Sanity checks on form elements
1.124 matthew 284: ##
1.243 albertel 285: if (!defined($env{'form.viewselect'})) {
1.248 www 286: $env{'form.viewselect'} ="summary";
1.146 matthew 287: }
1.243 albertel 288: $env{'form.phase'} = 'disp_basic' if (! exists($env{'form.phase'}));
289: $env{'form.show'} = 20 if (! exists($env{'form.show'}));
1.209 matthew 290: #
1.243 albertel 291: $env{'form.searchmode'} = 'basic' if (! exists($env{'form.searchmode'}));
292: if ($env{'form.phase'} eq 'adv_search' ||
293: $env{'form.phase'} eq 'disp_adv') {
294: $env{'form.searchmode'} = 'advanced';
295: } elsif ($env{'form.phase'} eq 'course_search') {
296: $env{'form.searchmode'} = 'course_search';
1.209 matthew 297: }
298: #
1.243 albertel 299: if ($env{'form.searchmode'} eq 'advanced') {
1.209 matthew 300: &Apache::lonhtmlcommon::add_breadcrumb
301: ({href=>'/adm/searchcat?phase=disp_adv&'.
1.243 albertel 302: 'catalogmode='.$env{'form.catalogmode'}.
303: '&launch='.$env{'form.launch'}.
304: '&mode='.$env{'form.mode'},
1.209 matthew 305: text=>"Advanced Search",
306: bug=>'Searching',});
1.243 albertel 307: } elsif ($env{'form.searchmode'} eq 'course search') {
1.209 matthew 308: &Apache::lonhtmlcommon::add_breadcrumb
309: ({href=>'/adm/searchcat?phase=disp_adv&'.
1.243 albertel 310: 'catalogmode='.$env{'form.catalogmode'}.
311: '&launch='.$env{'form.launch'}.
312: '&mode='.$env{'form.mode'},
1.209 matthew 313: text=>"Course Search",
314: bug=>'Searching',});
315: }
1.146 matthew 316: ##
317: ## Switch on the phase
318: ##
1.243 albertel 319: if ($env{'form.phase'} eq 'disp_basic') {
1.196 matthew 320: &print_basic_search_form($r,$closebutton,$hidden_fields);
1.243 albertel 321: } elsif ($env{'form.phase'} eq 'disp_adv') {
1.196 matthew 322: &print_advanced_search_form($r,$closebutton,$hidden_fields);
1.243 albertel 323: } elsif ($env{'form.phase'} eq 'results') {
1.196 matthew 324: &display_results($r,$importbutton,$closebutton,$diropendb);
1.243 albertel 325: } elsif ($env{'form.phase'} =~ /^(sort|run_search)$/) {
1.146 matthew 326: my ($query,$customquery,$customshow,$libraries,$pretty_string) =
327: &get_persistent_data($persistent_db_file,
328: ['query','customquery','customshow',
329: 'libraries','pretty_string']);
1.243 albertel 330: if ($env{'form.phase'} eq 'sort') {
1.151 matthew 331: &print_sort_form($r,$pretty_string);
1.243 albertel 332: } elsif ($env{'form.phase'} eq 'run_search') {
1.151 matthew 333: &run_search($r,$query,$customquery,$customshow,
334: $libraries,$pretty_string);
335: }
1.243 albertel 336: } elsif ($env{'form.phase'} eq 'course_search') {
1.167 www 337: &course_search($r);
1.243 albertel 338: } elsif(($env{'form.phase'} eq 'basic_search') ||
339: ($env{'form.phase'} eq 'adv_search')) {
1.228 matthew 340: #
341: # We are running a search, try to parse it
342: my ($query,$customquery,$customshow,$libraries) =
343: (undef,undef,undef,undef);
344: my $pretty_string;
1.243 albertel 345: if ($env{'form.phase'} eq 'basic_search') {
1.228 matthew 346: ($query,$pretty_string,$libraries) =
347: &parse_basic_search($r,$closebutton,$hidden_fields);
348: return OK if (! defined($query));
1.243 albertel 349: &make_persistent({ basicexp => $env{'form.basicexp'}},
1.228 matthew 350: $persistent_db_file);
351: } else { # Advanced search
352: ($query,$customquery,$customshow,$libraries,$pretty_string)
353: = &parse_advanced_search($r,$closebutton,$hidden_fields);
354: return OK if (! defined($query));
355: }
356: &make_persistent({ query => $query,
357: customquery => $customquery,
358: customshow => $customshow,
359: libraries => $libraries,
360: pretty_string => $pretty_string },
361: $persistent_db_file);
362: #
1.146 matthew 363: # Set up table
364: if (! defined(&create_results_table())) {
1.198 www 365: my $errorstring=&Apache::lonmysql::get_error();
1.211 matthew 366: &Apache::lonnet::logthis('lonsearchcat.pm: Unable to create '.
367: 'needed table. lonmysql error:'.
368: $errorstring);
1.238 albertel 369: my $html=&Apache::lonxml::xmlbegin();
1.147 matthew 370: $r->print(<<END);
1.238 albertel 371: $html
372: <head>
373: <title>Search Error</title></head>
1.155 matthew 374: $bodytag
1.147 matthew 375: Unable to create table in which to store search results.
376: The search has been aborted.
377: </body>
378: </html>
379: END
380: return OK;
1.146 matthew 381: }
1.243 albertel 382: delete($env{'form.launch'});
1.146 matthew 383: if (! &make_form_data_persistent($r,$persistent_db_file)) {
1.238 albertel 384: my $html=&Apache::lonxml::xmlbegin();
385: $r->print(<<END);
386: $html
387: <head>
388: <title>Search Error</title></head>
1.155 matthew 389: $bodytag
1.147 matthew 390: Unable to properly store search information. The search has been aborted.
391: </body>
392: </html>
393: END
394: return OK;
1.146 matthew 395: }
1.145 matthew 396: ##
1.146 matthew 397: ## Print out the frames interface
1.145 matthew 398: ##
1.228 matthew 399: if (defined($query)) {
400: &print_frames_interface($r);
401: }
1.124 matthew 402: }
403: return OK;
404: }
1.98 harris41 405:
1.221 matthew 406: #
407: # The mechanism used to store values away and retrieve them does not
408: # handle the case of missing environment variables being significant.
409: #
410: # This routine sets non existant checkbox form elements to ''.
411: #
412: sub clean_up_environment {
1.243 albertel 413: if ($env{'form.phase'} eq 'basic_search') {
414: if (! exists($env{'form.related'})) {
415: $env{'form.related'} = '';
1.221 matthew 416: }
1.243 albertel 417: if (! exists($env{'form.domains'})) {
418: $env{'form.domains'} = '';
1.221 matthew 419: }
1.243 albertel 420: } elsif ($env{'form.phase'} eq 'adv_search') {
1.221 matthew 421: foreach my $field ('title','keywords','notes',
422: 'abstract','standards','mime') {
1.243 albertel 423: if (! exists($env{'form.'.$field.'_related'})) {
424: $env{'form.'.$field.'_related'} = '';
1.221 matthew 425: }
426: }
1.243 albertel 427: } elsif ($env{'form.phase'} eq 'course_search') {
428: if (! exists($env{'form.crsrelated'})) {
429: $env{'form.crsrelated'} = '';
1.221 matthew 430: }
431: }
432: }
433:
1.223 matthew 434: sub hidden_field {
435: my ($name,$value) = @_;
436: if (! defined($value)) {
1.243 albertel 437: $value = $env{'form.'.$name};
1.223 matthew 438: }
439: return '<input type="hidden" name="'.$name.'" value="'.$value.'" />'.$/;
440: }
441:
1.124 matthew 442: ######################################################################
443: ######################################################################
1.196 matthew 444: ##
445: ## Course Search
446: ##
447: ######################################################################
448: ######################################################################
449: { # Scope the course search to avoid global variables
450: #
451: # Variables For course search
1.236 albertel 452: my %alreadyseen;
1.196 matthew 453: my %hash;
454: my $totalfound;
1.124 matthew 455:
1.235 albertel 456: sub make_symb {
457: my ($id)=@_;
458: my ($mapid,$resid)=split(/\./,$id);
459: my $map=$hash{'map_id_'.$mapid};
460: my $res=$hash{'src_'.$id};
461: my $symb=&Apache::lonnet::encode_symb($map,$resid,$res);
462: return $symb;
463: }
464:
1.167 www 465: sub course_search {
466: my $r=shift;
1.217 matthew 467: my $bodytag=&Apache::loncommon::bodytag('Course Search');
1.243 albertel 468: my $pretty_search_string = '<b>'.$env{'form.courseexp'}.'</b>';
469: my $search_string = $env{'form.courseexp'};
1.167 www 470: my @New_Words;
1.236 albertel 471: undef(%alreadyseen);
1.243 albertel 472: if ($env{'form.crsrelated'}) {
473: ($search_string,@New_Words) = &related_version($env{'form.courseexp'});
1.167 www 474: if (@New_Words) {
1.200 www 475: $pretty_search_string .= ' '.&mt("with related words").": <b>@New_Words</b>.";
1.167 www 476: } else {
1.200 www 477: $pretty_search_string .= ' '.&mt('with no related words').".";
1.167 www 478: }
479: }
1.243 albertel 480: my $fulltext=$env{'form.crsfulltext'};
481: my $discuss=$env{'form.crsdiscuss'};
1.167 www 482: my @allwords=($search_string,@New_Words);
1.169 www 483: $totalfound=0;
1.238 albertel 484: my $html=&Apache::lonxml::xmlbegin();
485: $r->print($html.'<head><title>LON-CAPA Course Search</title></head>'.
1.231 raeburn 486: $bodytag.'<hr /><center><font size="+2" face="arial">'.$pretty_search_string.'</font></center><hr /><b>'.&mt('Course content').':</b><br />');
1.167 www 487: $r->rflush();
488: # ======================================================= Go through the course
1.169 www 489: my $c=$r->connection;
1.243 albertel 490: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.".db",
1.196 matthew 491: &GDBM_READER(),0640)) {
1.235 albertel 492: foreach (sort(keys(%hash))) {
1.196 matthew 493: if ($c->aborted()) { last; }
1.235 albertel 494: if (($_=~/^src\_(.+)$/)) {
1.243 albertel 495: if ($hash{'randomout_'.$1} & !$env{'request.role.adv'}) {
1.235 albertel 496: next;
497: }
498: my $symb=&make_symb($1);
499: &checkonthis($r,$1,$hash{$_},0,&Apache::lonnet::gettitle($symb),
500: $fulltext,$symb,@allwords);
1.196 matthew 501: }
502: }
503: untie(%hash);
504: }
1.169 www 505: unless ($totalfound) {
1.231 raeburn 506: $r->print('<p>'.&mt('No matches found in resources').'.</p>');
1.169 www 507: }
1.231 raeburn 508:
509: # Check discussions if requested
510: if ($discuss) {
511: my $totaldiscussions = 0;
512: $r->print('<br /><br /><b>'.&mt('Discussion postings').':</b><br />');
513: my $navmap = Apache::lonnavmaps::navmap->new();
514: my @allres=$navmap->retrieveResources();
515: my %discussiontime = &Apache::lonnet::dump('discussiontimes',
1.243 albertel 516: $env{'course.'.$env{'request.course.id'}.'.domain'},
517: $env{'course.'.$env{'request.course.id'}.'.num'});
1.231 raeburn 518: foreach my $resource (@allres) {
519: my $result = '';
520: my $applies = 0;
521: my $symb = $resource->symb();
522: my $ressymb = $symb;
523: if ($symb =~ m#(___adm/\w+/\w+)/(\d+)/bulletinboard$#) {
524: $ressymb = 'bulletin___'.$2.$1.'/'.$2.'/bulletinboard';
525: unless ($ressymb =~ m#bulletin___\d+___adm/wrapper#) {
526: $ressymb=~s#(bulletin___\d+___)#$1adm/wrapper/#;
527: }
528: }
529: if (defined($discussiontime{$ressymb})) {
1.243 albertel 530: my %contrib = &Apache::lonnet::restore($ressymb,$env{'request.course.id'},
531: $env{'course.'.$env{'request.course.id'}.'.domain'},
532: $env{'course.'.$env{'request.course.id'}.'.num'});
1.231 raeburn 533: if ($contrib{'version'}) {
534: for (my $id=1;$id<=$contrib{'version'};$id++) {
535: unless (($contrib{'hidden'}=~/\.$id\./) || ($contrib{'deleted'}=~/\.$id\./)) {
536: if ($contrib{$id.':subject'}) {
537: $result .= $contrib{$id.':subject'};
538: }
539: if ($contrib{$id.':message'}) {
540: $result .= $contrib{$id.':message'};
541: }
542: if ($contrib{$id,':attachmenturl'}) {
543: if ($contrib{$id,':attachmenturl'} =~ m-/([^/]+)$-) {
544: $result .= $1;
545: }
546: }
547: $applies = &checkwords($result,$applies,@allwords);
548: }
549: }
550: }
551: }
552: # Does this discussion apply?
553: if ($applies) {
554: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($ressymb);
555: my $disctype = &mt('resource');
556: if ($url =~ m#/bulletinboard$#) {
557: if ($url =~m#^adm/wrapper/adm/.*/bulletinboard$#) {
558: $url =~s#^adm/wrapper##;
559: }
560: $disctype = &mt('bulletin board');
561: } else {
562: $url = '/res/'.$url;
563: }
564: if ($url =~ /\?/) {
565: $url .= '&symb=';
566: } else {
567: $url .= '?symb=';
568: }
569: $url .= &Apache::lonnet::escape($resource->symb());
570: my $title = $resource->compTitle();
571: $r->print('<br /><a href="'.$url.'" target="cat">'.
572: ($title?$title:$url).'</a> - '.$disctype.'<br />');
573: $totaldiscussions++;
574: } else {
575: $r->print(' .');
576: }
577: }
578: unless ($totaldiscussions) {
579: $r->print('<p>'.&mt('No matches found in postings').'.</p>');
580: }
581: }
582:
1.167 www 583: # =================================================== Done going through course
584: $r->print('</body></html>');
585: }
586:
587: # =============================== This pulls up a resource and its dependencies
588:
589: sub checkonthis {
1.235 albertel 590: my ($r,$id,$url,$level,$title,$fulltext,$symb,@allwords)=@_;
1.236 albertel 591: $alreadyseen{$id}=1;
592: if (&Apache::loncommon::connection_aborted($r)) { return; }
1.167 www 593: $r->rflush();
1.235 albertel 594:
595: my $result=$title.' ';
1.243 albertel 596: if ($env{'request.role.adv'} || !$hash{'encrypted_'.$id}) {
1.235 albertel 597: $result.=&Apache::lonnet::metadata($url,'title').' '.
598: &Apache::lonnet::metadata($url,'subject').' '.
599: &Apache::lonnet::metadata($url,'abstract').' '.
600: &Apache::lonnet::metadata($url,'keywords');
601: }
602: my ($extension)=($url=~/\.(\w+)$/);
603: if (&Apache::loncommon::fileembstyle($extension) eq 'ssi' &&
604: ($url) && ($fulltext)) {
605: $result.=&Apache::lonnet::ssi_body($url.'?symb='.&Apache::lonnet::escape($symb));
1.167 www 606: }
607: $result=~s/\s+/ /gs;
1.231 raeburn 608: my $applies = 0;
609: $applies = &checkwords($result,$applies,@allwords);
1.167 www 610: # Does this resource apply?
611: if ($applies) {
612: $r->print('<br />');
613: for (my $i=0;$i<=$level*5;$i++) {
614: $r->print(' ');
615: }
1.235 albertel 616: my $href=$url;
1.243 albertel 617: if ($hash{'encrypted_'.$id} && !$env{'request.role.adv'}) {
1.235 albertel 618: $href=&Apache::lonenc::encrypted($href)
619: .'?symb='.&Apache::lonenc::encrypted($symb);
620: } else {
621: $href.='?symb='.&Apache::lonnet::escape($symb);
622: }
623: $r->print('<a href="'.$href.'" target="cat">'.($title?$title:$url).
624: '</a><br />');
1.169 www 625: $totalfound++;
626: } elsif ($fulltext) {
627: $r->print(' .');
1.167 www 628: }
1.169 www 629: $r->rflush();
1.167 www 630: # Check also the dependencies of this one
631: my $dependencies=
632: &Apache::lonnet::metadata($url,'dependencies');
1.237 albertel 633: foreach (split(/\,/,$dependencies)) {
634: if (($_=~/^\/res\//) && (!$alreadyseen{$id})) {
1.235 albertel 635: &checkonthis($r,$id,$_,$level+1,'',$fulltext,undef,@allwords);
1.167 www 636: }
637: }
638: }
639:
1.231 raeburn 640: sub checkwords {
641: my ($result,$applies,@allwords) = @_;
642: foreach (@allwords) {
643: if ($_=~/\w/) {
644: if ($result=~/$_/si) {
645: $applies++;
646: }
647: }
648: }
649: return $applies;
650: }
651:
1.196 matthew 652: sub untiehash {
653: if (tied(%hash)) {
654: untie(%hash);
655: }
656: }
657:
658: } # End of course search scoping
659:
1.207 matthew 660: sub search_html_header {
1.238 albertel 661: my $html=&Apache::lonxml::xmlbegin();
1.207 matthew 662: my $Str = <<ENDHEADER;
1.238 albertel 663: $html
1.207 matthew 664: <head>
665: <title>The LearningOnline Network with CAPA</title>
666: </head>
667: ENDHEADER
668: return $Str;
669: }
670:
1.167 www 671: ######################################################################
672: ######################################################################
673:
1.124 matthew 674: =pod
675:
1.146 matthew 676: =item &print_basic_search_form()
1.124 matthew 677:
1.204 matthew 678: Prints the form for the basic search. Sorry the name is so cryptic.
1.124 matthew 679:
680: =cut
681:
682: ######################################################################
683: ######################################################################
1.204 matthew 684: sub print_basic_search_form {
1.196 matthew 685: my ($r,$closebutton,$hidden_fields) = @_;
1.243 albertel 686: my $result = ($env{'form.catalogmode'} ne 'groupsearch');
1.203 www 687: my $bodytag=&Apache::loncommon::bodytag('Search').
1.229 matthew 688: &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching','Search_Basic',
1.227 matthew 689: undef,undef,
1.243 albertel 690: $env{'form.catalogmode'} ne 'groupsearch');
1.207 matthew 691: my $scrout = &search_html_header().$bodytag;
1.243 albertel 692: if (&Apache::lonnet::allowed('bre',$env{'request.role.domain'})) {
1.213 matthew 693: # Define interface components
1.233 matthew 694: my $userelatedwords= '<label>'.
1.213 matthew 695: &mt('[_1] use related words',
696: &Apache::lonhtmlcommon::checkbox
1.243 albertel 697: ('related',$env{'form.related'},'related')).'</label>';
1.233 matthew 698: my $onlysearchdomain='<label>'.
1.213 matthew 699: &mt('[_1] only search domain [_2]',
1.221 matthew 700: &Apache::lonhtmlcommon::checkbox('domains',
1.243 albertel 701: $env{'form.domains'},
1.221 matthew 702: $r->dir_config('lonDefDomain')
703: ),
704: $r->dir_config('lonDefDomain')
1.233 matthew 705: ).'</label>';
1.248 www 706: my $inclext= '<label>'.
707: &mt('[_1] include external resources',
708: &Apache::lonhtmlcommon::checkbox
709: ('inclext',$env{'form.inclext'})).'</label>';
1.213 matthew 710: my $adv_search_link =
711: '<a href="/adm/searchcat?'.
712: 'phase=disp_adv&'.
1.243 albertel 713: 'catalogmode='.$env{'form.catalogmode'}.
714: '&launch='.$env{'form.launch'}.
715: '&mode='.$env{'form.mode'}.
1.213 matthew 716: '">'.&mt('Advanced Search').'</a>';
717: #
718: $scrout.='<form name="loncapa_search" method="post" '.
719: 'action="/adm/searchcat">'.
720: '<input type="hidden" name="phase" value="basic_search" />'.
721: $hidden_fields;
722: #
723: $scrout .= '<center>'.$/;
1.243 albertel 724: if ($env{'request.course.id'}) {
1.213 matthew 725: $scrout .= '<h1>'.&mt('LON-CAPA Catalog Search').'</h1>';
726: } else {
727: # No need to tell them they are searching
728: $scrout.= ('<br />'x2);
729: }
730: $scrout.='<table>'.
731: '<tr><td align="center" valign="top">'.
1.228 matthew 732: &Apache::lonhtmlcommon::textbox
733: ('basicexp',
1.243 albertel 734: &HTML::Entities::encode($env{'form.basicexp'},'<>&"'),50
1.228 matthew 735: ).
736: '<br />'.
1.213 matthew 737: '<font size="-1">'.&searchhelp().'</font>'.'</td>'.
738: '<td><font size="-1">'.
739: '<nobr>'.(' 'x3).$adv_search_link.'</nobr>'.'<br />'.
740: '<nobr>'.(' 'x1).$userelatedwords.'</nobr>'.'<br />'.
741: '<nobr>'.(' 'x1).$onlysearchdomain.'</nobr>'.'<br />'.
1.248 www 742: '<nobr>'.(' 'x1).$inclext.'</nobr>'.'<br />'.
743: '</font></td>'.
1.213 matthew 744: '</tr>'.$/;
745: #
746: $scrout .= '<tr><td align="center" colspan="2">'.
747: '<font size="-1">'.
748: '<input type="submit" name="basicsubmit" '.
749: 'value="'.&mt('Search').'" />'.
1.223 matthew 750: (' 'x2).$closebutton.(' 'x2).
751: &viewoptions().
1.213 matthew 752: '</font>'.
753: '</td></tr>'.$/;
754: $scrout .= '</table>'.$/.'</center>'.'</form>';
1.180 matthew 755: }
1.243 albertel 756: if ($env{'request.course.id'}) {
1.213 matthew 757: my %lt=&Apache::lonlocal::texthash('srch' => 'Search',
1.187 www 758: 'header' => 'Course Search',
759: 'note' => 'Enter terms or phrases, then press "Search" below',
1.200 www 760: 'use' => 'use related words',
1.231 raeburn 761: 'full' =>'fulltext search (time consuming)',
762: 'disc' => 'search discussion postings (resources and bulletin boards)',
1.187 www 763: );
1.180 matthew 764: $scrout.=(<<ENDCOURSESEARCH);
1.213 matthew 765: <form name="loncapa_search" method="post" action="/adm/searchcat">
766: <center>
1.180 matthew 767: <hr />
1.187 www 768: <h1>$lt{'header'}</h1>
1.167 www 769: <input type="hidden" name="phase" value="course_search" />
770: $hidden_fields
771: <p>
1.187 www 772: $lt{'note'}.
1.167 www 773: </p>
774: <p>
775: <table>
776: <tr><td>
777: ENDCOURSESEARCH
1.180 matthew 778: $scrout.=' '.
1.200 www 779: &Apache::lonhtmlcommon::textbox('courseexp',
1.243 albertel 780: $env{'form.courseexp'},40);
1.180 matthew 781: my $crscheckbox =
1.200 www 782: &Apache::lonhtmlcommon::checkbox('crsfulltext',
1.243 albertel 783: $env{'form.crsfulltext'});
1.180 matthew 784: my $relcheckbox =
1.200 www 785: &Apache::lonhtmlcommon::checkbox('crsrelated',
1.243 albertel 786: $env{'form.crsrelated'});
1.231 raeburn 787: my $discheckbox =
788: &Apache::lonhtmlcommon::checkbox('crsdiscuss',
1.243 albertel 789: $env{'form.crsrelated'});
1.180 matthew 790: $scrout.=(<<ENDENDCOURSE);
1.167 www 791: </td></tr>
1.234 matthew 792: <tr><td><label>$relcheckbox $lt{'use'}</label></td><td></td></tr>
793: <tr><td><label>$crscheckbox $lt{'full'}</label></td><td></td></tr>
794: <tr><td><label>$discheckbox $lt{'disc'}</label></td><td></td></tr>
1.167 www 795: </table><p>
1.187 www 796: <input type="submit" name="coursesubmit" value='$lt{'srch'}' />
1.167 www 797: </p>
1.213 matthew 798: </center>
799: </form>
1.167 www 800: ENDENDCOURSE
1.180 matthew 801: }
1.167 www 802: $scrout.=(<<ENDDOCUMENT);
1.124 matthew 803: </body>
804: </html>
805: ENDDOCUMENT
1.146 matthew 806: $r->print($scrout);
807: return;
1.124 matthew 808: }
809: ######################################################################
810: ######################################################################
811:
812: =pod
813:
814: =item &advanced_search_form()
815:
1.204 matthew 816: Prints the advanced search form.
1.124 matthew 817:
818: =cut
819:
820: ######################################################################
821: ######################################################################
1.146 matthew 822: sub print_advanced_search_form{
1.196 matthew 823: my ($r,$closebutton,$hidden_fields) = @_;
1.217 matthew 824: my $bodytag=&Apache::loncommon::bodytag('Advanced Catalog Search').
1.229 matthew 825: &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching',
826: 'Search_Advanced',
827: undef,undef,
1.243 albertel 828: $env{'form.catalogmode'} ne 'groupsearch');
1.200 www 829: my %lt=&Apache::lonlocal::texthash('srch' => 'Search',
830: 'reset' => 'Reset',
831: 'help' => 'Help');
1.217 matthew 832: my $advanced_buttons=<<"END";
1.200 www 833: <input type="submit" name="advancedsubmit" value='$lt{"srch"}' />
834: <input type="reset" name="reset" value='$lt{"reset"}' />
1.129 matthew 835: $closebutton
836: END
1.207 matthew 837: my $scrout=&search_html_header();
838: $scrout .= <<"ENDHEADER";
1.154 www 839: $bodytag
1.200 www 840: <form method="post" action="/adm/searchcat" name="advsearch">
1.217 matthew 841: <p>
1.129 matthew 842: $advanced_buttons
1.124 matthew 843: ENDHEADER
1.208 matthew 844: $scrout.=(' 'x2).&viewoptions().'</p>'.$hidden_fields.
845: '<input type="hidden" name="phase" value="adv_search" />';
1.200 www 846: my %fields=&Apache::lonmeta::fieldnames();
1.208 matthew 847: #
1.217 matthew 848: $scrout .= '<h3>'.&mt('Standard Metadata').'</h3>';
849: $scrout .= "<table>\n";
850: $scrout .= '<tr><td> </td><td colspan="2"><font size="-1">'.
851: (' 'x2).&searchhelp()."</font></td></tr>\n";
1.208 matthew 852: my %related_word_search =
1.217 matthew 853: ('title' => 1,
854: 'author' => 0,
855: 'owner' => 0,
856: 'authorspace' => 0,
857: 'modifyinguser'=> 0,
858: 'keywords' => 1,
859: 'notes' => 1,
860: 'abstract' => 1,
861: 'standards'=> 1,
862: 'mime' => 1,
1.246 albertel 863: 'subject' => 1,
1.208 matthew 864: );
1.209 matthew 865: #
1.246 albertel 866: foreach my $field ('title','author','subject','owner','authorspace',
867: 'modifyinguser','keywords','notes','abstract',
868: 'standards','mime') {
1.208 matthew 869: $scrout.='<tr><td align="right">'.&titlefield($fields{$field}).'</td><td>'.
870: &Apache::lonmeta::prettyinput($field,
1.243 albertel 871: $env{'form.'.$field},
1.208 matthew 872: $field,
873: 'advsearch',
874: $related_word_search{$field},
875: '</td><td align="left">',
1.243 albertel 876: $env{'form.'.$field.'_related'},
1.208 matthew 877: 50);
878: if ($related_word_search{$field}) {
879: $scrout .= 'related words';
880: } else {
881: $scrout .= '</td><td> ';
882: }
883: $scrout .= '</td></tr>'.$/;
884: }
885: foreach my $field ('lowestgradelevel','highestgradelevel') {
886: $scrout.='<tr>'.
887: '<td align="right">'.&titlefield($fields{$field}).'</td>'.
888: '<td colspan="2">'.
889: &Apache::lonmeta::prettyinput($field,
1.243 albertel 890: $env{'form.'.$field},
1.208 matthew 891: $field,
892: 'advsearch',
893: 0).
894: '</td></tr>'.$/;
1.200 www 895: }
1.208 matthew 896: $scrout.='<tr><td align="right">'.
897: &titlefield(&mt('MIME Type Category')).'</td><td colspan="2">'.
1.202 www 898: &Apache::loncommon::filecategoryselect('category',
1.243 albertel 899: $env{'form.category'}).
1.208 matthew 900: '</td></tr>'.$/;
901: $scrout.='<tr><td align="right" valign="top">'.
902: &titlefield(&mt('Domains')).'</td><td colspan="2">'.
1.202 www 903: &Apache::loncommon::domain_select('domains',
1.243 albertel 904: $env{'form.domains'},1).
1.248 www 905: '<br /><label>'.
906: &mt('[_1] include external resources',
907: &Apache::lonhtmlcommon::checkbox
908: ('inclext',$env{'form.inclext'})).'</label></td></tr>'.$/;
1.217 matthew 909: #
910: # Misc metadata
911: $scrout.='<tr><td align="right" valign="top">'.
912: &titlefield(&mt('Copyright/Distribution')).'</td><td colspan="2">'.
913: &Apache::lonmeta::selectbox('copyright',
1.243 albertel 914: $env{'form.copyright'},
1.217 matthew 915: \&Apache::loncommon::copyrightdescription,
916: ( undef,
917: &Apache::loncommon::copyrightids)
918: ).'</td></tr>'.$/;
919: $scrout.='<tr><td align="right" valign="top">'.
920: &titlefield(&mt('Language')).'</td><td colspan="2">'.
921: &Apache::lonmeta::selectbox('language',
1.243 albertel 922: $env{'form.language'},
1.217 matthew 923: \&Apache::loncommon::languagedescription,
924: ('any',&Apache::loncommon::languageids)
925: ).'</td></tr>';
926: $scrout .= "</table>\n";
927: #
928: # Dynamic metadata
929: $scrout .= '<h3>'.&mt('Problem Statistics').'</h3>';
930: $scrout .= "<table>\n";
931: $scrout .= '<tr><td> </td><td align="center">'.&mt('Minimum').'</td>'.
932: '<td align="center">'.&mt('Maximum').'</td></tr>'."\n";
933: foreach my $statistic
1.222 matthew 934: ({ name=>'count',
935: description=>'Network-wide number of accesses (hits)',},
936: { name=>'stdno',
937: description=>
938: 'Total number of students who have worked on this problem',},
1.217 matthew 939: { name => 'avetries',
1.222 matthew 940: description=>'Average number of tries till solved',},
1.217 matthew 941: { name => 'difficulty',
942: description=>'Degree of difficulty',},
943: { name => 'disc',
944: description=>'Degree of discrimination'}) {
945: $scrout .= '<tr><td align="right">'.
946: &titlefield(&mt($statistic->{'description'})).
947: '</td><td align="center">'.
948: '<input type="text" name="'.$statistic->{'name'}.'_min" '.
949: 'value="" size="6" />'.
950: '</td><td align="center">'.
951: '<input type="text" name="'.$statistic->{'name'}.'_max" '.
952: 'value="" size="6" />'.
953: '</td></tr>'.$/;
954: }
955: $scrout .= "</table>\n";
956: $scrout .= '<h3>'.&mt('Evaluation Data').'</h3>';
957: $scrout .= "<table>\n";
958: $scrout .= '<tr><td> </td><td align="center">'.&mt('Minimum').'</td>'.
959: '<td align="center">'.&mt('Maximum').'</td></tr>'."\n";
960: foreach my $evaluation
961: ( { name => 'clear',
962: description => 'Material presented in clear way'},
963: { name =>'depth',
964: description => 'Material covered with sufficient depth'},
965: { name => 'helpful',
966: description => 'Material is helpful'},
967: { name => 'correct',
968: description => 'Material appears to be correct'},
969: { name => 'technical',
970: description => 'Resource is technically correct'}){
971: $scrout .= '<tr><td align="right">'.
972: &titlefield(&mt($evaluation->{'description'})).
973: '</td><td align="center">'.
974: '<input type="text" name="'.$evaluation->{'name'}.'_min" '.
975: 'value="" size="6" />'.
976: '</td><td align="center">'.
977: '<input type="text" name="'.$evaluation->{'name'}.'_max" '.
978: 'value="" size="6" />'.
979: '</td></tr>'.$/;
980: }
981: $scrout .= "</table>\n";
1.216 matthew 982: #
983: # Creation/Modification date limits
1.217 matthew 984: $scrout .= '<h3>'.&mt('Creation and Modification dates').'</h3>';
1.216 matthew 985: $scrout .= "\n<table>\n";
986: my $cafter =
987: &Apache::lonhtmlcommon::date_setter('advsearch', # formname
988: 'creationdate1', # fieldname
989: 0, # current value
990: '', # special
991: 1, # includeempty
992: '', # state
993: 1, # no_hh_mm_ss
994: );
995: my $cbefore =
996: &Apache::lonhtmlcommon::date_setter('advsearch', # formname
997: 'creationdate2', # fieldname
998: 0, # current value
999: '', # special
1000: 1, # includeempty
1001: '', # state
1002: 1, # no_hh_mm_ss
1003: );
1004: $scrout .= &mt('<tr><td align="right">Created between</td>'.
1005: '<td>[_1]</td></tr>'.
1006: '<tr><td align="right">and </td>'.
1007: '<td>[_2]</td></tr>',$cafter,$cbefore);
1008: my $lafter =
1009: &Apache::lonhtmlcommon::date_setter('advsearch',
1010: 'revisiondate1',
1011: 0, # current value
1012: '', # special
1013: 1, # includeempty
1014: '', # state
1015: 1, # no_hh_mm_ss
1016: );
1017: my $lbefore =
1018: &Apache::lonhtmlcommon::date_setter('advsearch',
1019: 'revisiondate2',
1020: 0, # current value
1021: '', # special
1022: 1, # includeempty
1023: '', # state
1024: 1, # no_hh_mm_ss
1025: );
1026: $scrout .= &mt('<tr><td align="right">Last modified between </td>'.
1027: '<td>[_1]</td></tr>'.
1028: '<tr><td align="right">and</td>'.
1029: '<td>[_2]</td></tr>',$lafter,$lbefore);
1.202 www 1030: $scrout.="</table>\n";
1.124 matthew 1031: $scrout.=<<ENDDOCUMENT;
1.129 matthew 1032: $advanced_buttons
1.8 harris41 1033: </form>
1034: </body>
1035: </html>
1036: ENDDOCUMENT
1.146 matthew 1037: $r->print($scrout);
1038: return;
1.124 matthew 1039: }
1.204 matthew 1040:
1.200 www 1041: ######################################################################
1042: ######################################################################
1043:
1044: =pod
1045:
1.204 matthew 1046: =item &titlefield()
1.200 www 1047:
1048: Inputs: title text
1049:
1050: Outputs: titletext with font wrapper
1051:
1052: =cut
1053:
1054: ######################################################################
1055: ######################################################################
1056: sub titlefield {
1057: my $title=shift;
1.208 matthew 1058: return $title;
1.200 www 1059: }
1.204 matthew 1060:
1.200 www 1061: ######################################################################
1062: ######################################################################
1063:
1064: =pod
1065:
1.204 matthew 1066: =item viewoptiontext()
1.200 www 1067:
1068: Inputs: codename for view option
1069:
1070: Outputs: displayed text
1071:
1072: =cut
1073:
1074: ######################################################################
1075: ######################################################################
1076: sub viewoptiontext {
1077: my $code=shift;
1.204 matthew 1078: my %desc=&Apache::lonlocal::texthash
1079: ('detailed' => "Detailed Citation View",
1080: 'xml' => 'XML/SGML',
1081: 'compact' => 'Compact View',
1082: 'fielded' => 'Fielded Format',
1083: 'summary' => 'Summary View');
1.200 www 1084: return $desc{$code};
1085: }
1.204 matthew 1086:
1087: ######################################################################
1.200 www 1088: ######################################################################
1089:
1090: =pod
1091:
1.204 matthew 1092: =item viewoptions()
1.200 www 1093:
1094: Inputs: none
1095:
1096: Outputs: text for box with view options
1097:
1098: =cut
1099:
1100: ######################################################################
1101: ######################################################################
1102: sub viewoptions {
1.223 matthew 1103: my $scrout;
1.243 albertel 1104: if (! defined($env{'form.viewselect'})) {
1105: $env{'form.viewselect'}='detailed';
1.208 matthew 1106: }
1.200 www 1107: $scrout.=&Apache::lonmeta::selectbox('viewselect',
1.243 albertel 1108: $env{'form.viewselect'},
1.200 www 1109: \&viewoptiontext,
1110: sort(keys(%Views)));
1.208 matthew 1111: $scrout.= ' ';
1.214 matthew 1112: my $countselect = &Apache::lonmeta::selectbox('show',
1.243 albertel 1113: $env{'form.show'},
1.214 matthew 1114: undef,
1115: (10,20,50,100,1000,10000));
1116: $scrout .= (' 'x2).&mt('[_1] Records per Page',$countselect).
1117: '</nobr>'.$/;
1.200 www 1118: return $scrout;
1.201 www 1119: }
1120:
1121: ######################################################################
1.204 matthew 1122: ######################################################################
1.201 www 1123:
1124: =pod
1125:
1.204 matthew 1126: =item searchhelp()
1.201 www 1127:
1128: Inputs: none
1129:
1130: Outputs: return little blurb on how to enter searches
1131:
1132: =cut
1133:
1134: ######################################################################
1135: ######################################################################
1136: sub searchhelp {
1.228 matthew 1137: return &mt('Enter words and quoted phrases');
1.200 www 1138: }
1.8 harris41 1139:
1.121 matthew 1140: ######################################################################
1141: ######################################################################
1142:
1143: =pod
1144:
1.204 matthew 1145: =item &get_persistent_form_data()
1.145 matthew 1146:
1.146 matthew 1147: Inputs: filename of database
1148:
1149: Outputs: returns undef on database errors.
1150:
1151: This function is the reverse of &make_persistent() for form data.
1.145 matthew 1152: Retrieve persistent data from %persistent_db. Retrieved items will have their
1.243 albertel 1153: values unescaped. If a form value already exists in $env, it will not be
1.146 matthew 1154: overwritten. Form values that are array references may have values appended
1155: to them.
1.145 matthew 1156:
1157: =cut
1158:
1159: ######################################################################
1160: ######################################################################
1.146 matthew 1161: sub get_persistent_form_data {
1162: my $filename = shift;
1.147 matthew 1163: return 0 if (! -e $filename);
1.146 matthew 1164: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
1.148 matthew 1165: &GDBM_READER(),0640));
1.146 matthew 1166: #
1167: # These make sure we do not get array references printed out as 'values'.
1.161 matthew 1168: my %arrays_allowed = ('form.domains'=>1);
1.146 matthew 1169: #
1170: # Loop through the keys, looking for 'form.'
1171: foreach my $name (keys(%persistent_db)) {
1172: next if ($name !~ /^form./);
1.182 matthew 1173: # Kludgification begins!
1174: if ($name eq 'form.domains' &&
1.243 albertel 1175: $env{'form.searchmode'} eq 'basic' &&
1176: $env{'form.phase'} ne 'disp_basic') {
1.182 matthew 1177: next;
1178: }
1179: # End kludge (hopefully)
1.243 albertel 1180: next if (exists($env{$name}));
1.146 matthew 1181: my @values = map {
1182: &Apache::lonnet::unescape($_);
1183: } split(',',$persistent_db{$name});
1184: next if (@values <1);
1.152 matthew 1185: if ($arrays_allowed{$name}) {
1.243 albertel 1186: $env{$name} = [@values];
1.146 matthew 1187: } else {
1.243 albertel 1188: $env{$name} = $values[0] if ($values[0]);
1.146 matthew 1189: }
1190: }
1191: untie (%persistent_db);
1192: return 1;
1193: }
1.181 matthew 1194:
1.146 matthew 1195: ######################################################################
1196: ######################################################################
1197:
1198: =pod
1199:
1.204 matthew 1200: =item &get_persistent_data()
1.146 matthew 1201:
1202: Inputs: filename of database, ref to array of values to recover.
1203:
1204: Outputs: array of values. Returns undef on error.
1205:
1206: This function is the reverse of &make_persistent();
1207: Retrieve persistent data from %persistent_db. Retrieved items will have their
1208: values unescaped. If the item contains commas (before unescaping), the
1209: returned value will be an array pointer.
1210:
1211: =cut
1212:
1213: ######################################################################
1214: ######################################################################
1215: sub get_persistent_data {
1216: my $filename = shift;
1217: my @Vars = @{shift()};
1218: my @Values; # Return array
1219: return undef if (! -e $filename);
1220: return undef if (! tie(%persistent_db,'GDBM_File',$filename,
1.148 matthew 1221: &GDBM_READER(),0640));
1.146 matthew 1222: foreach my $name (@Vars) {
1223: if (! exists($persistent_db{$name})) {
1224: push @Values, undef;
1225: next;
1226: }
1227: my @values = map {
1228: &Apache::lonnet::unescape($_);
1229: } split(',',$persistent_db{$name});
1.152 matthew 1230: if (@values <= 1) {
1.146 matthew 1231: push @Values,$values[0];
1.145 matthew 1232: } else {
1.146 matthew 1233: push @Values,\@values;
1.145 matthew 1234: }
1235: }
1.146 matthew 1236: untie (%persistent_db);
1237: return @Values;
1.145 matthew 1238: }
1239:
1240: ######################################################################
1241: ######################################################################
1242:
1243: =pod
1244:
1.121 matthew 1245: =item &make_persistent()
1246:
1.146 matthew 1247: Inputs: Hash of values to save, filename of persistent database.
1248:
1249: Store variables away to the %persistent_db.
1.145 matthew 1250: Values will be escaped. Values that are array pointers will have their
1.205 www 1251: elements escaped and concatenated in a comma separated string.
1.122 matthew 1252:
1.121 matthew 1253: =cut
1254:
1255: ######################################################################
1256: ######################################################################
1.98 harris41 1257: sub make_persistent {
1.133 matthew 1258: my %save = %{shift()};
1.146 matthew 1259: my $filename = shift;
1260: return undef if (! tie(%persistent_db,'GDBM_File',
1.148 matthew 1261: $filename,&GDBM_WRCREAT(),0640));
1.146 matthew 1262: foreach my $name (keys(%save)) {
1.145 matthew 1263: my @values = (ref($save{$name}) ? @{$save{$name}} : ($save{$name}));
1264: # We handle array references, but not recursively.
1265: my $store = join(',', map { &Apache::lonnet::escape($_); } @values );
1266: $persistent_db{$name} = $store;
1.109 harris41 1267: }
1.146 matthew 1268: untie(%persistent_db);
1269: return 1;
1270: }
1271:
1272: ######################################################################
1273: ######################################################################
1274:
1275: =pod
1276:
1277: =item &make_form_data_persistent()
1278:
1279: Inputs: filename of persistent database.
1280:
1281: Store most form variables away to the %persistent_db.
1282: Values will be escaped. Values that are array pointers will have their
1.205 www 1283: elements escaped and concatenated in a comma separated string.
1.146 matthew 1284:
1285: =cut
1286:
1287: ######################################################################
1288: ######################################################################
1289: sub make_form_data_persistent {
1290: my $r = shift;
1291: my $filename = shift;
1292: my %save;
1.243 albertel 1293: foreach (keys(%env)) {
1.150 matthew 1294: next if (!/^form/ || /submit/);
1.243 albertel 1295: $save{$_} = $env{$_};
1.146 matthew 1296: }
1.152 matthew 1297: return &make_persistent(\%save,$filename);
1.98 harris41 1298: }
1299:
1.122 matthew 1300: ######################################################################
1301: ######################################################################
1302:
1303: =pod
1304:
1.134 matthew 1305: =item &parse_advanced_search()
1306:
1307: Parse advanced search form and return the following:
1308:
1309: =over 4
1310:
1311: =item $query Scalar containing an SQL query.
1.126 matthew 1312:
1.134 matthew 1313: =item $customquery Scalar containing a custom query.
1314:
1315: =item $customshow Scalar containing commands to show custom metadata.
1316:
1317: =item $libraries_to_query Reference to array of domains to search.
1318:
1319: =back
1.122 matthew 1320:
1321: =cut
1322:
1323: ######################################################################
1324: ######################################################################
1.134 matthew 1325: sub parse_advanced_search {
1.196 matthew 1326: my ($r,$closebutton,$hidden_fields)=@_;
1.216 matthew 1327: my @BasicFields = ('title','author','subject','keywords','url','version',
1.227 matthew 1328: 'notes','abstract','extension','owner','authorspace',
1.216 matthew 1329: # 'custommetadata','customshow',
1330: 'modifyinguser','standards','mime');
1.222 matthew 1331: my @StatsFields = &statfields();
1332: my @EvalFields = &evalfields();
1.32 harris41 1333: my $fillflag=0;
1.230 matthew 1334: my $pretty_search_string = "";
1.64 harris41 1335: # Clean up fields for safety
1.216 matthew 1336: for my $field (@BasicFields,
1337: 'creationdatestart_month','creationdatestart_day',
1.64 harris41 1338: 'creationdatestart_year','creationdateend_month',
1339: 'creationdateend_day','creationdateend_year',
1340: 'lastrevisiondatestart_month','lastrevisiondatestart_day',
1341: 'lastrevisiondatestart_year','lastrevisiondateend_month',
1.216 matthew 1342: 'lastrevisiondateend_day','lastrevisiondateend_year') {
1.243 albertel 1343: $env{'form.'.$field}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1.64 harris41 1344: }
1.117 matthew 1345: foreach ('mode','form','element') {
1346: # is this required? Hmmm.
1.243 albertel 1347: next if (! exists($env{'form.'.$_}));
1348: $env{'form.'.$_}=&Apache::lonnet::unescape($env{'form.'.$_});
1349: $env{'form.'.$_}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1.117 matthew 1350: }
1.131 matthew 1351: # Preprocess the category form element.
1.243 albertel 1352: $env{'form.category'} = 'any' if (! defined($env{'form.category'}) ||
1353: ref($env{'form.category'}));
1.161 matthew 1354: #
1.90 harris41 1355: # Check to see if enough information was filled in
1.222 matthew 1356: foreach my $field (@BasicFields) {
1.243 albertel 1357: if (&filled($env{'form.'.$field})) {
1.32 harris41 1358: $fillflag++;
1359: }
1360: }
1.222 matthew 1361: foreach my $field (@StatsFields,@EvalFields) {
1.243 albertel 1362: if (&filled($env{'form.'.$field.'_max'})) {
1.222 matthew 1363: $fillflag++;
1364: }
1.243 albertel 1365: if (&filled($env{'form.'.$field.'_min'})) {
1.222 matthew 1366: $fillflag++;
1367: }
1368: }
1369:
1.216 matthew 1370: for my $field ('lowestgradelevel','highestgradelevel') {
1.243 albertel 1371: if ( $env{'form.'.$field} =~ /^\d+$/ &&
1372: $env{'form.'.$field} > 0) {
1.216 matthew 1373: $fillflag++;
1374: }
1375: }
1.212 matthew 1376: if (! $fillflag) {
1.204 matthew 1377: &output_blank_field_error($r,$closebutton,
1378: 'phase=disp_adv',$hidden_fields);
1.134 matthew 1379: return ;
1.32 harris41 1380: }
1.90 harris41 1381: # Turn the form input into a SQL-based query
1.39 harris41 1382: my $query='';
1.45 harris41 1383: my @queries;
1.143 matthew 1384: my $font = '<font color="#800000" face="helvetica">';
1.90 harris41 1385: # Evaluate logical expression AND/OR/NOT phrase fields.
1.216 matthew 1386: foreach my $field (@BasicFields) {
1.243 albertel 1387: next if (!defined($env{'form.'.$field}) || $env{'form.'.$field} eq '');
1.228 matthew 1388: my ($error,$SQLQuery) =
1.243 albertel 1389: &process_phrase_input($env{'form.'.$field},
1390: $env{'form.'.$field.'_related'},$field);
1.228 matthew 1391: if (defined($error)) {
1392: &output_unparsed_phrase_error($r,$closebutton,'phase=disp_adv',
1393: $hidden_fields,$field);
1394: return;
1395: } else {
1396: $pretty_search_string .=
1.243 albertel 1397: $font.$field.'</font>: '.$env{'form.'.$field};
1398: if ($env{'form.'.$field.'_related'}) {
1.228 matthew 1399: my @Words =
1400: &Apache::loncommon::get_related_words
1.243 albertel 1401: ($env{'form.'.$field});
1.228 matthew 1402: if (@Words) {
1403: $pretty_search_string.= ' with related words: '.
1404: join(', ',@Words[0..4]);
1.143 matthew 1405: } else {
1.228 matthew 1406: $pretty_search_string.= ' with related words.';
1.143 matthew 1407: }
1.142 matthew 1408: }
1.228 matthew 1409: $pretty_search_string .= '<br />';
1410: push (@queries,$SQLQuery);
1.131 matthew 1411: }
1.44 harris41 1412: }
1.161 matthew 1413: #
1414: # Make the 'mime' from 'form.category' and 'form.extension'
1415: #
1416: my $searchphrase;
1.243 albertel 1417: if (exists($env{'form.category'}) &&
1418: $env{'form.category'} !~ /^\s*$/ &&
1419: $env{'form.category'} ne 'any') {
1.161 matthew 1420: my @extensions = &Apache::loncommon::filecategorytypes
1.243 albertel 1421: ($env{'form.category'});
1.161 matthew 1422: if (scalar(@extensions) > 0) {
1423: $searchphrase = join(' OR ',@extensions);
1424: }
1425: }
1426: if (defined($searchphrase)) {
1.228 matthew 1427: my ($error,$SQLsearch) = &process_phrase_input($searchphrase,0,'mime');
1428: push @queries,$SQLsearch;
1.161 matthew 1429: $pretty_search_string .=$font.'mime</font> contains <b>'.
1430: $searchphrase.'</b><br />';
1.135 matthew 1431: }
1.204 matthew 1432: #
1.90 harris41 1433: # Evaluate option lists
1.243 albertel 1434: if ($env{'form.lowestgradelevel'} &&
1435: $env{'form.lowestgradelevel'} ne '0' &&
1436: $env{'form.lowestgradelevel'} =~ /^\d+$/) {
1.216 matthew 1437: push(@queries,
1.243 albertel 1438: '(lowestgradelevel>='.$env{'form.lowestgradelevel'}.')');
1.216 matthew 1439: $pretty_search_string.="lowestgradelevel>=".
1.243 albertel 1440: $env{'form.lowestgradelevel'}."<br />\n";
1.216 matthew 1441: }
1.243 albertel 1442: if ($env{'form.highestgradelevel'} &&
1443: $env{'form.highestgradelevel'} ne '0' &&
1444: $env{'form.highestgradelevel'} =~ /^\d+$/) {
1.216 matthew 1445: push(@queries,
1.243 albertel 1446: '(highestgradelevel<='.$env{'form.highestgradelevel'}.')');
1.216 matthew 1447: $pretty_search_string.="highestgradelevel<=".
1.243 albertel 1448: $env{'form.highestgradelevel'}."<br />\n";
1.216 matthew 1449: }
1.243 albertel 1450: if ($env{'form.language'} and $env{'form.language'} ne 'any') {
1451: push @queries,"(language like \"$env{'form.language'}\")";
1.143 matthew 1452: $pretty_search_string.=$font."language</font>= ".
1.243 albertel 1453: &Apache::loncommon::languagedescription($env{'form.language'}).
1.143 matthew 1454: "<br />\n";
1.58 harris41 1455: }
1.243 albertel 1456: if ($env{'form.copyright'} and $env{'form.copyright'} ne 'any') {
1457: push @queries,"(copyright like \"$env{'form.copyright'}\")";
1.143 matthew 1458: $pretty_search_string.=$font."copyright</font> = ".
1.243 albertel 1459: &Apache::loncommon::copyrightdescription($env{'form.copyright'}).
1.230 matthew 1460: "<br />\n";
1.58 harris41 1461: }
1.143 matthew 1462: #
1.217 matthew 1463: # Statistics
1464: foreach my $field (@StatsFields,@EvalFields) {
1465: my ($min,$max);
1.243 albertel 1466: if (exists($env{'form.'.$field.'_min'}) &&
1467: $env{'form.'.$field.'_min'} ne '') {
1468: $min = $env{'form.'.$field.'_min'};
1469: }
1470: if (exists($env{'form.'.$field.'_max'}) &&
1471: $env{'form.'.$field.'_max'} ne '') {
1472: $max = $env{'form.'.$field.'_max'};
1.217 matthew 1473: }
1474: next if (! defined($max) && ! defined($min));
1475: if (defined($min) && defined($max)) {
1476: ($min,$max) = sort {$a <=>$b} ($min,$max);
1477: }
1478: if (defined($min) && $min =~ /^(\d+\.\d+|\d+|\.\d+)$/) {
1479: push(@queries,'('.$field.'>'.$min.')');
1480: $pretty_search_string.=$font.$field.'</font>>'.$min.'<br />';
1481: }
1482: if (defined($max) && $max =~ /^(\d+\.\d+|\d+|\.\d+)$/) {
1483: push(@queries,'('.$field.'<'.$max.')');
1484: $pretty_search_string.=$font.$field.'</font><'.$max.'<br />';
1485: }
1486: }
1487: #
1.90 harris41 1488: # Evaluate date windows
1.216 matthew 1489: my $cafter =
1490: &Apache::lonhtmlcommon::get_date_from_form('creationdate1');
1491: my $cbefore =
1492: &Apache::lonhtmlcommon::get_date_from_form('creationdate2');
1493: if ($cafter > $cbefore) {
1494: my $tmp = $cafter;
1495: $cafter = $cbefore;
1496: $cbefore = $tmp;
1497: }
1498: my $mafter =
1499: &Apache::lonhtmlcommon::get_date_from_form('revisiondate1');
1500: my $mbefore =
1501: &Apache::lonhtmlcommon::get_date_from_form('revisiondate2');
1502: if ($mafter > $mbefore) {
1503: my $tmp = $mafter;
1504: $mafter = $mbefore;
1505: $mbefore = $tmp;
1506: }
1507: my ($datequery,$error,$prettydate)=&build_date_queries($cafter,$cbefore,
1508: $mafter,$mbefore);
1509: if (defined($error)) {
1510: &output_date_error($r,$error,$closebutton,$hidden_fields);
1511: } elsif (defined($datequery)) {
1.143 matthew 1512: # Here is where you would set up pretty_search_string to output
1513: # date query information.
1.216 matthew 1514: $pretty_search_string .= '<br />'.$prettydate.'<br />';
1.60 harris41 1515: push @queries,$datequery;
1516: }
1.204 matthew 1517: #
1.90 harris41 1518: # Process form information for custom metadata querying
1.134 matthew 1519: my $customquery=undef;
1.204 matthew 1520: ##
1521: ## The custom metadata search was removed q long time ago mostly
1522: ## because I was unable to figureout exactly how it worked and could
1523: ## not imagine people actually using it. MH
1524: ##
1.243 albertel 1525: # if ($env{'form.custommetadata'}) {
1.204 matthew 1526: # $pretty_search_string .=$font."Custom Metadata Search</font>: <b>".
1.243 albertel 1527: # $env{'form.custommetadata'}."</b><br />\n";
1.204 matthew 1528: # $customquery=&build_custommetadata_query('custommetadata',
1.243 albertel 1529: # $env{'form.custommetadata'});
1.204 matthew 1530: # }
1.134 matthew 1531: my $customshow=undef;
1.243 albertel 1532: # if ($env{'form.customshow'}) {
1.204 matthew 1533: # $pretty_search_string .=$font."Custom Metadata Display</font>: <b>".
1.243 albertel 1534: # $env{'form.customshow'}."</b><br />\n";
1535: # $customshow=$env{'form.customshow'};
1.204 matthew 1536: # $customshow=~s/[^\w\s]//g;
1537: # my @fields=split(/\s+/,$customshow);
1538: # $customshow=join(" ",@fields);
1539: # }
1540: ##
1.132 matthew 1541: ## Deal with restrictions to given domains
1542: ##
1.239 matthew 1543: my ($libraries_to_query,$pretty_domains_string,$domain_sql_restriction) =
1.180 matthew 1544: &parse_domain_restrictions();
1.251 www 1545: if ((defined($domain_sql_restriction)) && ($domain_sql_restriction ne '')) {
1546: push(@queries,$domain_sql_restriction);
1547: $pretty_search_string .= $pretty_domains_string."<br />\n";
1548: }
1.180 matthew 1549: #
1550: if (@queries) {
1.228 matthew 1551: $query="SELECT * FROM metadata WHERE (".join(") AND (",@queries).')';
1.180 matthew 1552: } elsif ($customquery) {
1553: $query = '';
1554: }
1.241 matthew 1555: #&Apache::lonnet::logthis('advanced query = '.$/.$query);
1.180 matthew 1556: return ($query,$customquery,$customshow,$libraries_to_query,
1557: $pretty_search_string);
1558: }
1559:
1560: sub parse_domain_restrictions {
1.132 matthew 1561: my $libraries_to_query = undef;
1.243 albertel 1562: # $env{'form.domains'} can be either a scalar or an array reference.
1.132 matthew 1563: # We need an array.
1.243 albertel 1564: if (! exists($env{'form.domains'}) || $env{'form.domains'} eq '') {
1.240 matthew 1565: return (undef,'',undef);
1.180 matthew 1566: }
1.245 albertel 1567: my @allowed_domains = &Apache::loncommon::get_env_multiple('form.domains');
1.204 matthew 1568: #
1.132 matthew 1569: my %domain_hash = ();
1.143 matthew 1570: my $pretty_domains_string;
1.239 matthew 1571: my $domain_sql_restriction;
1.132 matthew 1572: foreach (@allowed_domains) {
1573: $domain_hash{$_}++;
1574: }
1.143 matthew 1575: if ($domain_hash{'any'}) {
1.152 matthew 1576: $pretty_domains_string = "In all LON-CAPA domains.";
1.239 matthew 1577: $domain_sql_restriction = undef;
1.143 matthew 1578: } else {
1579: if (@allowed_domains > 1) {
1.152 matthew 1580: $pretty_domains_string = "In LON-CAPA domains:";
1.143 matthew 1581: } else {
1.152 matthew 1582: $pretty_domains_string = "In LON-CAPA domain ";
1.143 matthew 1583: }
1.239 matthew 1584: $domain_sql_restriction =
1585: '(domain="'.join('" OR domain="',@allowed_domains).'")';
1.143 matthew 1586: foreach (sort @allowed_domains) {
1.152 matthew 1587: $pretty_domains_string .= "<b>".$_."</b> ";
1.132 matthew 1588: }
1.143 matthew 1589: foreach (keys(%Apache::lonnet::libserv)) {
1590: if (exists($domain_hash{$Apache::lonnet::hostdom{$_}})) {
1591: push @$libraries_to_query,$_;
1592: }
1.132 matthew 1593: }
1594: }
1.239 matthew 1595: return ($libraries_to_query,
1596: $pretty_domains_string,
1597: $domain_sql_restriction);
1.18 harris41 1598: }
1599:
1.122 matthew 1600: ######################################################################
1601: ######################################################################
1602:
1603: =pod
1604:
1.134 matthew 1605: =item &parse_basic_search()
1.122 matthew 1606:
1.134 matthew 1607: Parse the basic search form and return a scalar containing an sql query.
1.126 matthew 1608:
1.122 matthew 1609: =cut
1610:
1611: ######################################################################
1612: ######################################################################
1.134 matthew 1613: sub parse_basic_search {
1.145 matthew 1614: my ($r,$closebutton)=@_;
1.204 matthew 1615: #
1.64 harris41 1616: # Clean up fields for safety
1617: for my $field ('basicexp') {
1.243 albertel 1618: $env{"form.$field"}=~s/[^\w\s\'\"\!\(\)\-]//g;
1.64 harris41 1619: }
1.117 matthew 1620: foreach ('mode','form','element') {
1621: # is this required? Hmmm.
1.243 albertel 1622: next unless (exists($env{"form.$_"}));
1623: $env{"form.$_"}=&Apache::lonnet::unescape($env{"form.$_"});
1624: $env{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1.117 matthew 1625: }
1.239 matthew 1626: my ($libraries_to_query,$pretty_domains_string,$domain_sql_restriction) =
1.180 matthew 1627: &parse_domain_restrictions();
1.204 matthew 1628: #
1629: # Check to see if enough of a query is filled in
1.243 albertel 1630: my $search_string = $env{'form.basicexp'};
1.220 matthew 1631: if (! &filled($search_string)) {
1.151 matthew 1632: &output_blank_field_error($r,$closebutton,'phase=disp_basic');
1.24 harris41 1633: return OK;
1634: }
1.228 matthew 1635: my $pretty_search_string=$search_string;
1.224 matthew 1636: my @Queries;
1.228 matthew 1637: my $searchfield = 'concat_ws(" ",'.join(',',
1638: ('title','author','subject',
1639: 'notes','abstract','keywords')
1640: ).')';
1641: my ($error,$SQLQuery) = &process_phrase_input($search_string,
1.243 albertel 1642: $env{'form.related'},
1.228 matthew 1643: $searchfield);
1644: if ($error) {
1645: &output_unparsed_phrase_error($r,$closebutton,'phase=disp_basic',
1646: '','basicexp');
1647: return;
1.141 matthew 1648: }
1.228 matthew 1649: push(@Queries,$SQLQuery);
1.240 matthew 1650: if (defined($domain_sql_restriction) && $domain_sql_restriction ne '') {
1651: push(@Queries,$domain_sql_restriction);
1652: }
1.228 matthew 1653: #foreach my $q (@Queries) {
1654: # &Apache::lonnet::logthis(' '.$q);
1655: #}
1.224 matthew 1656: my $final_query = 'SELECT * FROM metadata WHERE '.join(" AND ",@Queries);
1.204 matthew 1657: #
1.180 matthew 1658: if (defined($pretty_domains_string) && $pretty_domains_string ne '') {
1659: $pretty_search_string .= ' '.$pretty_domains_string;
1660: }
1.143 matthew 1661: $pretty_search_string .= "<br />\n";
1.225 matthew 1662: $pretty_search_string =~ s:^<br /> and ::;
1.241 matthew 1663: #&Apache::lonnet::logthis('simple search final query = '.$/.$final_query);
1.183 matthew 1664: return ($final_query,$pretty_search_string,
1.180 matthew 1665: $libraries_to_query);
1.22 harris41 1666: }
1667:
1.228 matthew 1668:
1669: ###############################################################
1670: ###############################################################
1671:
1672: my @Phrases;
1673:
1674: sub concat {
1675: my ($item) = @_;
1676: my $results = '';
1677: foreach (@$item) {
1678: if (ref($_) eq 'ARRAY') {
1679: $results .= join(' ',@$_);
1680: }
1681: }
1682: return $results;
1683: }
1684:
1.224 matthew 1685: sub process_phrase_input {
1.228 matthew 1686: my ($phrase,$related,$field)=@_;
1687: #&Apache::lonnet::logthis('phrase = :'.$phrase.':');
1688: my $grammar = <<'ENDGRAMMAR';
1689: searchphrase:
1690: expression /^\Z/ {
1691: # &Apache::lonsearchcat::print_item(\@item,0);
1692: [@item];
1693: }
1694: expression:
1695: phrase(s) {
1696: [@item];
1697: }
1698: phrase:
1699: orword {
1700: [@item];
1701: }
1702: | andword {
1703: [@item];
1704: }
1705: | minusword {
1706: unshift(@::Phrases,$item[1]->[0]);
1707: unshift(@::Phrases,$item[1]->[1]);
1708: [@item];
1709: }
1710: | word {
1711: unshift(@::Phrases,$item[1]);
1712: [@item];
1713: }
1714: #
1715: orword:
1716: word 'OR' phrase {
1717: unshift(@::Phrases,'OR');
1718: unshift(@::Phrases,$item[1]);
1719: [@item];
1720: }
1721: | word 'or' phrase {
1722: unshift(@::Phrases,'OR');
1723: unshift(@::Phrases,$item[1]);
1724: [@item];
1725: }
1726: | minusword 'OR' phrase {
1727: unshift(@::Phrases,'OR');
1728: unshift(@::Phrases,$item[1]->[0]);
1729: unshift(@::Phrases,$item[1]->[1]);
1730: [@item];
1731: }
1732: | minusword 'or' phrase {
1733: unshift(@::Phrases,'OR');
1734: unshift(@::Phrases,$item[1]->[0]);
1735: unshift(@::Phrases,$item[1]->[1]);
1736: [@item];
1737: }
1738: andword:
1739: word phrase {
1740: unshift(@::Phrases,'AND');
1741: unshift(@::Phrases,$item[1]);
1742: [@item];
1743: }
1744: | minusword phrase {
1745: unshift(@::Phrases,'AND');
1746: unshift(@::Phrases,$item[1]->[0]);
1747: unshift(@::Phrases,$item[1]->[1]);
1748: [@item];
1749: }
1750: #
1751: minusword:
1752: '-' word {
1753: [$item[2],'NOT'];
1754: }
1755: word:
1756: "'" term(s) "'" {
1757: &Apache::lonsearchcat::concat(\@item);
1758: }
1759: | '"' term(s) '"' {
1760: &Apache::lonsearchcat::concat(\@item);
1761: }
1762: | term {
1763: $item[1];
1764: }
1765: term:
1766: /[\w\Q:!@#$%^&*()+_=|{}<>,.;\\\/?\E]+/ {
1767: $item[1];
1768: }
1769: ENDGRAMMAR
1770: #
1771: # The end result of parsing the phrase with the grammar is an array
1772: # @::Phrases.
1773: # $phrase = "gene splicing" or cat -> "gene splicing","OR","cat"
1774: # $phrase = "genetic engineering" -dna ->
1775: # "genetic engineering","AND","NOT","dna"
1776: # $phrase = cat or dog -poodle -> "cat","OR","dog","AND","NOT","poodle"
1777: undef(@::Phrases);
1778: my $p = new Parse::RecDescent($grammar);
1779: if (! defined($p->searchphrase($phrase))) {
1780: &Apache::lonnet::logthis('lonsearchcat:unable to process:'.$phrase);
1781: return 'Unable to process phrase '.$phrase;
1782: }
1783: #
1784: # Go through the phrases and make sense of them.
1785: # Apply modifiers NOT OR and AND to the phrases.
1786: my @NewPhrases;
1787: while(@::Phrases) {
1788: my $phrase = shift(@::Phrases);
1789: # &Apache::lonnet::logthis('phrase = '.$phrase);
1790: my $phrasedata;
1791: if ($phrase =~ /^(NOT|OR|AND)$/) {
1792: if ($phrase eq 'OR') {
1793: $phrasedata->{'or'}++;
1794: if (! @::Phrases) { $phrasedata = undef; last; }
1795: $phrase = shift(@::Phrases);
1796: } elsif ($phrase eq 'AND') {
1797: $phrasedata->{'and'}++;
1798: if (! @::Phrases) { $phrasedata = undef; last; }
1799: $phrase = shift(@::Phrases);
1.224 matthew 1800: }
1.228 matthew 1801: if ($phrase eq 'NOT') {
1802: $phrasedata->{'negate'}++;
1803: if (! @::Phrases) { $phrasedata = undef; last; }
1804: $phrase = shift(@::Phrases);
1.224 matthew 1805: }
1.228 matthew 1806: }
1807: $phrasedata->{'phrase'} = $phrase;
1808: if ($related) {
1809: my @NewWords;
1810: (undef,@NewWords) = &related_version($phrasedata->{'phrase'});
1811: $phrasedata->{'related_words'} = \@NewWords;
1812: }
1813: push(@NewPhrases,$phrasedata);
1814: }
1815: #
1816: # Actually build the sql query from the phrases
1817: my $SQLQuery;
1818: foreach my $phrase (@NewPhrases) {
1819: my $query;
1820: if ($phrase->{'negate'}) {
1821: $query .= $field.' NOT LIKE "%'.$phrase->{'phrase'}.'%"';
1.224 matthew 1822: } else {
1.228 matthew 1823: $query .= $field.' LIKE "%'.$phrase->{'phrase'}.'%"';
1824: }
1825: foreach my $related (@{$phrase->{'related_words'}}) {
1826: if ($phrase->{'negate'}) {
1827: $query .= ' AND '.$field.' NOT LIKE "%'.$related.'%"';
1828: } else {
1829: $query .= ' OR '.$field.' LIKE "%'.$related.'%"';
1830: }
1831: }
1832: if ($SQLQuery) {
1833: if ($phrase->{'or'}) {
1834: $SQLQuery .= ' OR ('.$query.')';
1835: } else {
1836: $SQLQuery .= ' AND ('.$query.')';
1.224 matthew 1837: }
1.228 matthew 1838: } else {
1839: $SQLQuery = '('.$query.')';
1.224 matthew 1840: }
1841: }
1842: #
1.228 matthew 1843: # &Apache::lonnet::logthis("SQLQuery = $SQLQuery");
1.224 matthew 1844: #
1.228 matthew 1845: return undef,$SQLQuery;
1.224 matthew 1846: }
1847:
1.122 matthew 1848: ######################################################################
1849: ######################################################################
1850:
1851: =pod
1852:
1.204 matthew 1853: =item &related_version()
1.142 matthew 1854:
1855: Modifies an input string to include related words. Words in the string
1856: are replaced with parenthesized lists of 'OR'd words. For example
1857: "torque" is replaced with "(torque OR word1 OR word2 OR ...)".
1858:
1859: Note: Using this twice on a string is probably silly.
1860:
1861: =cut
1862:
1863: ######################################################################
1864: ######################################################################
1865: sub related_version {
1.224 matthew 1866: my ($word) = @_;
1867: return (undef) if (lc($word) =~ /\b(or|and|not)\b/);
1868: my @Words = &Apache::loncommon::get_related_words($word);
1869: # Only use 4 related words
1870: @Words = ($#Words>4? @Words[0..4] : @Words);
1871: my $result = join " OR ", ($word,@Words);
1872: return $result,sort(@Words);
1.142 matthew 1873: }
1874:
1.98 harris41 1875:
1.122 matthew 1876: ######################################################################
1877: ######################################################################
1878:
1879: =pod
1880:
1881: =item &build_custommetadata_query()
1882:
1.126 matthew 1883: Constructs a custom metadata query using a rather heinous regular
1884: expression.
1885:
1.122 matthew 1886: =cut
1887:
1888: ######################################################################
1889: ######################################################################
1.98 harris41 1890: sub build_custommetadata_query {
1891: my ($field_name,$logic_statement)=@_;
1892: my $q=new Text::Query('abc',
1893: -parse => 'Text::Query::ParseAdvanced',
1894: -build => 'Text::Query::BuildAdvancedString');
1895: $q->prepare($logic_statement);
1896: my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
1897: # quick fix to change literal into xml tag-matching
1898: # will eventually have to write a separate builder module
1.122 matthew 1899: # wordone=wordtwo becomes\<wordone\>[^\<] *wordtwo[^\<]*\<\/wordone\>
1900: $matchexp =~ s/(\w+)\\=([\w\\\+]+)?# wordone=wordtwo is changed to
1901: /\\<$1\\>?# \<wordone\>
1902: \[\^\\<\]?# [^\<]
1903: \*$2\[\^\\<\]?# *wordtwo[^\<]
1904: \*\\<\\\/$1\\>?# *\<\/wordone\>
1905: /g;
1.98 harris41 1906: return $matchexp;
1907: }
1908:
1.22 harris41 1909:
1.122 matthew 1910: ######################################################################
1911: ######################################################################
1912:
1913: =pod
1914:
1915: =item &build_date_queries()
1916:
1.126 matthew 1917: Builds a SQL logic query to check time/date entries.
1918: Also reports errors (check for /^Incorrect/).
1919:
1.122 matthew 1920: =cut
1921:
1922: ######################################################################
1923: ######################################################################
1.98 harris41 1924: sub build_date_queries {
1.216 matthew 1925: my ($cafter,$cbefore,$mafter,$mbefore) = @_;
1926: my ($result,$error,$pretty_string);
1927: #
1928: # Verify the input
1929: if (! defined($cafter) && ! defined($cbefore) &&
1930: ! defined($mafter) && ! defined($mbefore)) {
1931: # This is an okay situation, so return undef for the error
1932: return (undef,undef,undef);
1933: }
1934: if ((defined($cafter) && ! defined($cbefore)) ||
1935: (defined($cbefore) && ! defined($cafter))) {
1936: # This is bad, so let them know
1937: $error = &mt('Incorrect entry for the creation date. '.
1938: 'You must specify both the beginning and ending dates.');
1939: }
1940: if (! defined($error) &&
1941: ((defined($mafter) && ! defined($mbefore)) ||
1942: (defined($mbefore) && ! defined($mafter)))) {
1943: # This is also bad, so let them know
1944: $error = &mt('Incorrect entry for the last revision date. '.
1945: 'You must specify both the beginning and ending dates.');
1.98 harris41 1946: }
1.216 matthew 1947: if (! defined($error)) {
1948: #
1949: # Build the queries
1950: my @queries;
1951: if (defined($cbefore) && defined($cafter)) {
1952: my (undef,undef,undef,$caday,$camon,$cayear) = localtime($cafter);
1953: my (undef,undef,undef,$cbday,$cbmon,$cbyear) = localtime($cbefore);
1954: # Correct for year being relative to 1900
1955: $cayear+=1900; $cbyear+=1900;
1956: my $cquery=
1957: '(creationdate BETWEEN '.
1958: "'".$cayear.'-'.$camon.'-'.$caday."'".
1959: ' AND '.
1960: "'".$cbyear.'-'.$cbmon.'-'.$cbday." 23:59:59')";
1961: $pretty_string .= '<br />' if (defined($pretty_string));
1962: $pretty_string .=
1963: &mt('created between [_1] and [_2]',
1964: &Apache::lonlocal::locallocaltime($cafter),
1965: &Apache::lonlocal::locallocaltime($cbefore+24*60*60-1));
1966: push(@queries,$cquery);
1967: $pretty_string =~ s/ 00:00:00//g;
1968: }
1969: if (defined($mbefore) && defined($mafter)) {
1970: my (undef,undef,undef,$maday,$mamon,$mayear) = localtime($mafter);
1971: my (undef,undef,undef,$mbday,$mbmon,$mbyear) = localtime($mbefore);
1972: # Correct for year being relative to 1900
1973: $mayear+=1900; $mbyear+=1900;
1974: my $mquery=
1975: '(lastrevisiondate BETWEEN '.
1976: "'".$mayear.'-'.$mamon.'-'.$maday."'".
1977: ' AND '.
1978: "'".$mbyear.'-'.$mbmon.'-'.$mbday." 23:59:59')";
1979: push(@queries,$mquery);
1980: $pretty_string .= '<br />' if (defined($pretty_string));
1981: $pretty_string .=
1982: &mt('last revised between [_1] and [_2]',
1983: &Apache::lonlocal::locallocaltime($mafter),
1984: &Apache::lonlocal::locallocaltime($mbefore+24*60*60-1));
1985: $pretty_string =~ s/ 00:00:00//g;
1986: }
1987: if (@queries) {
1988: $result .= join(" AND ",@queries);
1989: }
1.98 harris41 1990: }
1.216 matthew 1991: return ($result,$error,$pretty_string);
1.18 harris41 1992: }
1.6 harris41 1993:
1.122 matthew 1994: ######################################################################
1995: ######################################################################
1996:
1.144 matthew 1997: =pod
1998:
1999: =item ©right_check()
2000:
1.204 matthew 2001: Inputs: $Metadata, a hash pointer of metadata for a resource.
2002:
2003: Returns: 1 if the resource is available to the user making the query,
2004: 0 otherwise.
2005:
1.144 matthew 2006: =cut
2007:
2008: ######################################################################
2009: ######################################################################
2010: sub copyright_check {
2011: my $Metadata = shift;
2012: # Check copyright tags and skip results the user cannot use
2013: my (undef,undef,$resdom,$resname) = split('/',
2014: $Metadata->{'url'});
2015: # Check for priv
2016: if (($Metadata->{'copyright'} eq 'priv') &&
1.243 albertel 2017: (($env{'user.name'} ne $resname) &&
2018: ($env{'user.domain'} ne $resdom))) {
1.144 matthew 2019: return 0;
2020: }
2021: # Check for domain
2022: if (($Metadata->{'copyright'} eq 'domain') &&
1.243 albertel 2023: ($env{'user.domain'} ne $resdom)) {
1.144 matthew 2024: return 0;
2025: }
2026: return 1;
2027: }
2028:
1.151 matthew 2029: ######################################################################
2030: ######################################################################
2031:
2032: =pod
2033:
1.204 matthew 2034: =item &ensure_db_and_table()
1.151 matthew 2035:
2036: Ensure we can get lonmysql to connect to the database and the table we
2037: need exists.
2038:
2039: Inputs: $r, table id
2040:
2041: Returns: undef on error, 1 if the table exists.
2042:
2043: =cut
2044:
2045: ######################################################################
2046: ######################################################################
2047: sub ensure_db_and_table {
2048: my ($r,$table) = @_;
2049: ##
2050: ## Sanity check the table id.
2051: ##
2052: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
2053: $r->print("Unable to retrieve search results. ".
2054: "Unable to determine the table results were stored in. ".
2055: "</body></html>");
2056: return undef;
2057: }
2058: ##
2059: ## Make sure we can connect and the table exists.
2060: ##
2061: my $connection_result = &Apache::lonmysql::connect_to_db();
2062: if (!defined($connection_result)) {
2063: $r->print("Unable to connect to the MySQL database where your results".
2064: " are stored. </body></html>");
2065: &Apache::lonnet::logthis("lonsearchcat: unable to get lonmysql to".
2066: " connect to database.");
2067: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
2068: return undef;
2069: }
2070: my $table_check = &Apache::lonmysql::check_table($table);
2071: if (! defined($table_check)) {
2072: $r->print("A MySQL error has occurred.</form></body></html>");
2073: &Apache::lonnet::logthis("lonmysql was unable to determine the status".
2074: " of table ".$table);
2075: return undef;
2076: } elsif (! $table_check) {
2077: $r->print("The table of results could not be found.");
2078: &Apache::lonnet::logthis("The user requested a table, ".$table.
2079: ", that could not be found.");
2080: return undef;
2081: }
2082: return 1;
2083: }
2084:
2085: ######################################################################
2086: ######################################################################
2087:
2088: =pod
2089:
1.204 matthew 2090: =item &print_sort_form()
2091:
2092: The sort feature is not implemented at this time. This form just prints
2093: a link to change the search query.
1.151 matthew 2094:
2095: =cut
2096:
2097: ######################################################################
2098: ######################################################################
2099: sub print_sort_form {
2100: my ($r,$pretty_query_string) = @_;
1.224 matthew 2101: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1).
2102: &Apache::lonhtmlcommon::breadcrumbs
2103: (undef,'Searching','Searching',undef,undef,
1.243 albertel 2104: $env{'form.catalogmode'} ne 'groupsearch');
1.224 matthew 2105:
1.151 matthew 2106: ##
1.187 www 2107: my %SortableFields=&Apache::lonlocal::texthash(
2108: id => 'Default',
1.151 matthew 2109: title => 'Title',
2110: author => 'Author',
2111: subject => 'Subject',
2112: url => 'URL',
2113: version => 'Version Number',
2114: mime => 'Mime type',
2115: lang => 'Language',
2116: owner => 'Owner/Publisher',
2117: copyright => 'Copyright',
2118: hostname => 'Host',
2119: creationdate => 'Creation Date',
1.187 www 2120: lastrevisiondate => 'Revision Date'
1.151 matthew 2121: );
2122: ##
1.243 albertel 2123: my $table = $env{'form.table'};
1.151 matthew 2124: return if (! &ensure_db_and_table($r,$table));
2125: ##
2126: ## Get the number of results
2127: ##
2128: my $total_results = &Apache::lonmysql::number_of_rows($table);
2129: if (! defined($total_results)) {
2130: $r->print("A MySQL error has occurred.</form></body></html>");
2131: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
2132: " of rows in table ".$table);
2133: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
2134: return;
2135: }
2136: my $result;
1.238 albertel 2137: my $html=&Apache::lonxml::xmlbegin();
1.151 matthew 2138: $result.=<<END;
1.238 albertel 2139: $html
1.151 matthew 2140: <head>
2141: <script>
2142: function change_sort() {
2143: var newloc = "/adm/searchcat?phase=results";
1.243 albertel 2144: newloc += "&persistent_db_id=$env{'form.persistent_db_id'}";
1.151 matthew 2145: newloc += "&sortby=";
2146: newloc += document.forms.statusform.elements.sortby.value;
2147: parent.resultsframe.location= newloc;
2148: }
2149: </script>
2150: <title>Results</title>
2151: </head>
1.155 matthew 2152: $bodytag
1.151 matthew 2153: <form name="statusform" action="" method="post">
1.153 matthew 2154: <input type="hidden" name="Queue" value="" />
1.151 matthew 2155: END
2156:
2157: #<h2>Sort Results</h2>
2158: #Sort by: <select size="1" name="sortby" onchange="javascript:change_sort();">
1.243 albertel 2159: # $env{'form.sortby'} = 'id' if (! defined($env{'form.sortby'}));
1.151 matthew 2160: # foreach (keys(%SortableFields)) {
2161: # $result.="<option name=\"$_\"";
1.243 albertel 2162: # if ($_ eq $env{'form.sortby'}) {
1.151 matthew 2163: # $result.=" selected ";
2164: # }
2165: # $result.=" >$SortableFields{$_}</option>\n";
2166: # }
2167: # $result.="</select>\n";
2168: my $revise = &revise_button();
2169: $result.=<<END;
2170: <p>
2171: There are $total_results matches to your query. $revise
2172: </p><p>
2173: Search:$pretty_query_string
2174: </p>
2175: </form>
2176: </body>
2177: </html>
2178: END
2179: $r->print($result);
2180: return;
2181: }
2182:
1.144 matthew 2183: #####################################################################
2184: #####################################################################
2185:
2186: =pod
2187:
2188: =item MySQL Table Description
2189:
2190: MySQL table creation requires a precise description of the data to be
2191: stored. The use of the correct types to hold data is vital to efficient
2192: storage and quick retrieval of records. The columns must be described in
2193: the following format:
2194:
2195: =cut
2196:
1.170 matthew 2197: #####################################################################
2198: #####################################################################
1.204 matthew 2199: #
2200: # These should probably be scoped but I don't have time right now...
2201: #
2202: my @Datatypes;
2203: my @Fullindicies;
1.147 matthew 2204:
1.144 matthew 2205: ######################################################################
2206: ######################################################################
2207:
2208: =pod
2209:
1.146 matthew 2210: =item &create_results_table()
2211:
2212: Creates the table of search results by calling lonmysql. Stores the
1.243 albertel 2213: table id in $env{'form.table'}
1.146 matthew 2214:
2215: Inputs: none.
2216:
2217: Returns: the identifier of the table on success, undef on error.
2218:
2219: =cut
2220:
2221: ######################################################################
2222: ######################################################################
1.204 matthew 2223: sub set_up_table_structure {
2224: my ($datatypes,$fullindicies) =
2225: &LONCAPA::lonmetadata::describe_metadata_storage();
1.212 matthew 2226: # Copy the table description before modifying it...
2227: @Datatypes = @{$datatypes};
2228: unshift(@Datatypes,{name => 'id',
1.204 matthew 2229: type => 'MEDIUMINT',
2230: restrictions => 'UNSIGNED NOT NULL',
2231: primary_key => 'yes',
2232: auto_inc => 'yes' });
2233: @Fullindicies = @{$fullindicies};
2234: return;
2235: }
2236:
1.146 matthew 2237: sub create_results_table {
1.204 matthew 2238: &set_up_table_structure();
1.146 matthew 2239: my $table = &Apache::lonmysql::create_table
1.170 matthew 2240: ( { columns => \@Datatypes,
1.172 matthew 2241: FULLTEXT => [{'columns' => \@Fullindicies},],
1.146 matthew 2242: } );
2243: if (defined($table)) {
1.243 albertel 2244: $env{'form.table'} = $table;
1.146 matthew 2245: return $table;
2246: }
2247: return undef; # Error...
2248: }
1.148 matthew 2249:
1.146 matthew 2250: ######################################################################
2251: ######################################################################
2252:
2253: =pod
2254:
1.150 matthew 2255: =item Search Status update functions
1.144 matthew 2256:
1.150 matthew 2257: Each of the following functions changes the values of one of the
2258: input fields used to display the search status to the user. The names
2259: should be explanatory.
1.144 matthew 2260:
1.150 matthew 2261: Inputs: Apache request handler ($r), text to display.
1.148 matthew 2262:
1.150 matthew 2263: Returns: Nothing.
1.148 matthew 2264:
2265: =over 4
2266:
2267: =item &update_count_status()
2268:
1.150 matthew 2269: =item &update_status()
1.148 matthew 2270:
1.150 matthew 2271: =item &update_seconds()
1.148 matthew 2272:
2273: =back
2274:
2275: =cut
2276:
2277: ######################################################################
2278: ######################################################################
2279: sub update_count_status {
2280: my ($r,$text) = @_;
2281: $text =~ s/\'/\\\'/g;
2282: $r->print
2283: ("<script>document.statusform.count.value = ' $text'</script>\n");
2284: $r->rflush();
2285: }
2286:
1.150 matthew 2287: sub update_status {
1.148 matthew 2288: my ($r,$text) = @_;
2289: $text =~ s/\'/\\\'/g;
2290: $r->print
1.150 matthew 2291: ("<script>document.statusform.status.value = ' $text'</script>\n");
1.148 matthew 2292: $r->rflush();
2293: }
2294:
1.214 matthew 2295: {
1.250 www 2296: my $max_time = 300; # seconds for the search to complete
1.214 matthew 2297: my $start_time = 0;
2298: my $last_time = 0;
2299:
2300: sub reset_timing {
2301: $start_time = 0;
2302: $last_time = 0;
2303: }
2304:
2305: sub time_left {
2306: if ($start_time == 0) {
2307: $start_time = time;
2308: }
2309: my $time_left = $max_time - (time - $start_time);
2310: $time_left = 0 if ($time_left < 0);
2311: return $time_left;
2312: }
2313:
1.150 matthew 2314: sub update_seconds {
1.214 matthew 2315: my ($r) = @_;
2316: my $time = &time_left();
2317: if (($last_time-$time) > 0) {
2318: $r->print("<script>".
2319: "document.statusform.seconds.value = '$time'".
2320: "</script>\n");
2321: $r->rflush();
2322: }
2323: $last_time = $time;
2324: }
2325:
1.148 matthew 2326: }
2327:
2328: ######################################################################
2329: ######################################################################
2330:
2331: =pod
2332:
1.204 matthew 2333: =item &revise_button()
1.151 matthew 2334:
2335: Inputs: None
2336:
2337: Returns: html string for a 'revise search' button.
2338:
2339: =cut
2340:
2341: ######################################################################
2342: ######################################################################
2343: sub revise_button {
2344: my $revise_phase = 'disp_basic';
1.243 albertel 2345: $revise_phase = 'disp_adv' if ($env{'form.searchmode'} eq 'advanced');
1.151 matthew 2346: my $newloc = '/adm/searchcat'.
1.243 albertel 2347: '?persistent_db_id='.$env{'form.persistent_db_id'}.
1.158 matthew 2348: '&cleargroupsort=1'.
1.151 matthew 2349: '&phase='.$revise_phase;
2350: my $result = qq{<input type="button" value="Revise search" name="revise"} .
2351: qq{ onClick="parent.location='$newloc';" /> };
2352: return $result;
2353: }
2354:
2355: ######################################################################
2356: ######################################################################
2357:
2358: =pod
2359:
1.204 matthew 2360: =item &run_search()
2361:
2362: Executes a search query by sending it the the other servers and putting the
2363: results into MySQL.
1.144 matthew 2364:
2365: =cut
2366:
2367: ######################################################################
2368: ######################################################################
2369: sub run_search {
1.146 matthew 2370: my ($r,$query,$customquery,$customshow,$serverlist,$pretty_string) = @_;
1.196 matthew 2371: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.227 matthew 2372: $bodytag.=&Apache::lonhtmlcommon::breadcrumbs
2373: (undef,'Searching','Searching',undef,undef,
1.243 albertel 2374: $env{'form.catalogmode'} ne 'groupsearch');
1.150 matthew 2375: my $connection = $r->connection;
1.144 matthew 2376: #
1.146 matthew 2377: # Print run_search header
2378: #
1.238 albertel 2379: my $html=&Apache::lonxml::xmlbegin();
1.151 matthew 2380: $r->print(<<END);
1.238 albertel 2381: $html
2382: <head>
2383: <title>Search Status</title></head>
1.155 matthew 2384: $bodytag
1.151 matthew 2385: <form name="statusform" action="" method="post">
2386: <input type="hidden" name="Queue" value="" />
2387: END
1.230 matthew 2388: # Remove leading and trailing <br />
2389: $pretty_string =~ s:^\s*<br />::i;
2390: $pretty_string =~ s:(<br />)*\s*$::im;
2391: my @Lines = split("<br />",$pretty_string);
2392: # I keep getting blank items at the end of the list, hence the following:
2393: while ($Lines[-1] =~ /^\s*$/ && @Lines) {
2394: pop(@Lines);
2395: }
1.152 matthew 2396: if (@Lines > 2) {
1.230 matthew 2397: $pretty_string = join '<br />',(@Lines[0..2],'....<br />');
1.151 matthew 2398: }
1.214 matthew 2399: $r->print(&mt("Search: [_1]",$pretty_string));
1.146 matthew 2400: $r->rflush();
2401: #
1.145 matthew 2402: # Determine the servers we need to contact.
1.144 matthew 2403: my @Servers_to_contact;
2404: if (defined($serverlist)) {
1.152 matthew 2405: if (ref($serverlist) eq 'ARRAY') {
2406: @Servers_to_contact = @$serverlist;
2407: } else {
2408: @Servers_to_contact = ($serverlist);
2409: }
1.144 matthew 2410: } else {
2411: @Servers_to_contact = sort(keys(%Apache::lonnet::libserv));
2412: }
2413: my %Server_status;
1.214 matthew 2414: #
2415: # Check on the mysql table we will use to store results.
1.243 albertel 2416: my $table =$env{'form.table'};
1.150 matthew 2417: if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
1.147 matthew 2418: $r->print("Unable to determine table id to store search results in.".
1.148 matthew 2419: "The search has been aborted.</body></html>");
1.147 matthew 2420: return;
2421: }
2422: my $table_status = &Apache::lonmysql::check_table($table);
2423: if (! defined($table_status)) {
2424: $r->print("Unable to determine status of table.</body></html>");
2425: &Apache::lonnet::logthis("Bogus table id of $table for ".
1.243 albertel 2426: "$env{'user.name'} @ $env{'user.domain'}");
1.147 matthew 2427: &Apache::lonnet::logthis("lonmysql error = ".
1.144 matthew 2428: &Apache::lonmysql::get_error());
1.147 matthew 2429: return;
2430: }
2431: if (! $table_status) {
1.204 matthew 2432: &Apache::lonnet::logthis("lonmysql error = ".
2433: &Apache::lonmysql::get_error());
2434: &Apache::lonnet::logthis("lonmysql debug = ".
2435: &Apache::lonmysql::get_debug());
2436: &Apache::lonnet::logthis('table status = "'.$table_status.'"');
1.147 matthew 2437: $r->print("The table id,$table, we tried to use is invalid.".
1.148 matthew 2438: "The search has been aborted.</body></html>");
1.144 matthew 2439: return;
2440: }
1.145 matthew 2441: ##
1.146 matthew 2442: ## Prepare for the big loop.
1.144 matthew 2443: my $hitcountsum;
2444: my $server;
2445: my $status;
1.151 matthew 2446: my $revise = &revise_button();
1.148 matthew 2447: $r->print(<<END);
2448: <table>
1.151 matthew 2449: <tr><th>Status</th><th>Total Matches</th><th>Time Remaining</th><th></th></tr>
1.148 matthew 2450: <tr>
1.240 matthew 2451: <td><input type="text" name="status" value="" size="50" /></td>
1.150 matthew 2452: <td><input type="text" name="count" value="" size="10" /></td>
2453: <td><input type="text" name="seconds" value="" size="8" /></td>
1.151 matthew 2454: <td>$revise</td>
1.148 matthew 2455: </tr>
2456: </table>
2457: </form>
2458: END
2459: $r->rflush();
1.214 matthew 2460: &reset_timing();
2461: &update_seconds($r);
2462: &update_status($r,&mt('contacting [_1]',$Servers_to_contact[0]));
2463: while (&time_left() &&
1.144 matthew 2464: ((@Servers_to_contact) || keys(%Server_status))) {
1.214 matthew 2465: &update_seconds($r);
2466: #
2467: # Send out a search request
1.144 matthew 2468: if (@Servers_to_contact) {
2469: # Contact one server
2470: my $server = shift(@Servers_to_contact);
1.214 matthew 2471: &update_status($r,&mt('contacting [_1]',$server));
1.144 matthew 2472: my $reply=&Apache::lonnet::metadata_query($query,$customquery,
2473: $customshow,[$server]);
2474: ($server) = keys(%$reply);
2475: $Server_status{$server} = $reply->{$server};
2476: } else {
1.150 matthew 2477: # wait a sec. to give time for files to be written
2478: # This sleep statement is here instead of outside the else
2479: # block because we do not want to pause if we have servers
2480: # left to contact.
1.183 matthew 2481: if (scalar (keys(%Server_status))) {
2482: &update_status($r,
1.214 matthew 2483: &mt('waiting on [_1]',join(' ',keys(%Server_status))));
1.183 matthew 2484: }
1.150 matthew 2485: sleep(1);
1.144 matthew 2486: }
1.159 matthew 2487: #
2488: # Loop through the servers we have contacted but do not
2489: # have results from yet, looking for results.
1.228 matthew 2490: foreach my $server (keys(%Server_status)) {
1.150 matthew 2491: last if ($connection->aborted());
1.214 matthew 2492: &update_seconds($r);
1.228 matthew 2493: my $status = $Server_status{$server};
1.144 matthew 2494: if ($status eq 'con_lost') {
2495: delete ($Server_status{$server});
2496: next;
2497: }
1.242 albertel 2498: $status=~s|/||g;
2499: my $datafile=$r->dir_config('lonDaemons').'/tmp/'.$status;
1.144 matthew 2500: if (-e $datafile && ! -e "$datafile.end") {
1.214 matthew 2501: &update_status($r,&mt('Receiving results from [_1]',$server));
1.144 matthew 2502: next;
2503: }
1.150 matthew 2504: last if ($connection->aborted());
1.144 matthew 2505: if (-e "$datafile.end") {
1.214 matthew 2506: &update_status($r,&mt('Reading results from [_1]',$server));
1.144 matthew 2507: if (-z "$datafile") {
2508: delete($Server_status{$server});
2509: next;
2510: }
2511: my $fh;
2512: if (!($fh=Apache::File->new($datafile))) {
1.146 matthew 2513: $r->print("Unable to open search results file for ".
1.145 matthew 2514: "server $server. Omitting from search");
1.150 matthew 2515: delete($Server_status{$server});
2516: next;
1.144 matthew 2517: }
2518: # Read in the whole file.
2519: while (my $result = <$fh>) {
1.150 matthew 2520: last if ($connection->aborted());
1.214 matthew 2521: #
2522: # Records are stored one per line
1.144 matthew 2523: chomp($result);
1.214 matthew 2524: next if (! $result);
2525: #
1.144 matthew 2526: # Parse the result.
2527: my %Fields = &parse_raw_result($result,$server);
2528: $Fields{'hostname'} = $server;
1.214 matthew 2529: #
1.248 www 2530: # Skip if external and we did not want that
2531: next if ((! $env{'form.inclext'}) && ($Fields{'url'}=~/^\/ext\//));
1.214 matthew 2532: # Skip based on copyright
1.144 matthew 2533: next if (! ©right_check(\%Fields));
1.248 www 2534:
1.214 matthew 2535: #
1.144 matthew 2536: # Store the result in the mysql database
2537: my $result = &Apache::lonmysql::store_row($table,\%Fields);
2538: if (! defined($result)) {
1.146 matthew 2539: $r->print(&Apache::lonmysql::get_error());
1.144 matthew 2540: }
1.214 matthew 2541: #
1.144 matthew 2542: $hitcountsum ++;
1.214 matthew 2543: &update_seconds($r);
1.150 matthew 2544: if ($hitcountsum % 50 == 0) {
2545: &update_count_status($r,$hitcountsum);
2546: }
1.214 matthew 2547: }
1.144 matthew 2548: $fh->close();
2549: # $server is only deleted if the results file has been
2550: # found and (successfully) opened. This may be a bad idea.
2551: delete($Server_status{$server});
2552: }
1.150 matthew 2553: last if ($connection->aborted());
1.148 matthew 2554: &update_count_status($r,$hitcountsum);
1.144 matthew 2555: }
1.150 matthew 2556: last if ($connection->aborted());
1.214 matthew 2557: &update_seconds($r);
1.144 matthew 2558: }
1.214 matthew 2559: &update_status($r,&mt('Search Complete [_1]',$server));
2560: &update_seconds($r);
1.204 matthew 2561: #
1.214 matthew 2562: &Apache::lonmysql::disconnect_from_db(); # This is unneccessary
1.204 matthew 2563: #
1.144 matthew 2564: # We have run out of time or run out of servers to talk to and
1.214 matthew 2565: # results to get, so let the client know the top frame needs to be
2566: # loaded from /adm/searchcat
1.146 matthew 2567: $r->print("</body></html>");
1.243 albertel 2568: # if ($env{'form.catalogmode'} ne 'groupsearch') {
1.153 matthew 2569: $r->print("<script>".
2570: "window.location='/adm/searchcat?".
2571: "phase=sort&".
1.243 albertel 2572: "persistent_db_id=$env{'form.persistent_db_id'}';".
1.153 matthew 2573: "</script>");
1.224 matthew 2574: # }
1.144 matthew 2575: return;
2576: }
2577:
2578: ######################################################################
2579: ######################################################################
1.204 matthew 2580:
1.144 matthew 2581: =pod
2582:
1.204 matthew 2583: =item &prev_next_buttons()
2584:
2585: Returns html for the previous and next buttons on the search results page.
1.144 matthew 2586:
2587: =cut
2588:
2589: ######################################################################
2590: ######################################################################
1.146 matthew 2591: sub prev_next_buttons {
1.145 matthew 2592: my ($current_min,$show,$total,$parms) = @_;
2593: return '' if ($show eq 'all'); # No links if you get them all at once.
1.214 matthew 2594: #
1.223 matthew 2595: # Create buttons
2596: my $buttons = '<input type="submit" name="prev" value="'.&mt('Prev').'" ';
2597: $buttons .= '/>';
2598: $buttons .= ' 'x3;
2599: $buttons .= '<input type="submit" name="reload" '.
2600: 'value="'.&mt('Reload').'" />';
2601: $buttons .= ' 'x3;
2602: $buttons .= '<input type="submit" name="next" value="'.&mt('Next').'" ';
2603: $buttons .= '/>';
2604: return $buttons;
1.144 matthew 2605: }
1.204 matthew 2606:
1.144 matthew 2607: ######################################################################
2608: ######################################################################
2609:
2610: =pod
2611:
1.204 matthew 2612: =item &display_results()
2613:
2614: Prints the results out for selection and perusal.
1.144 matthew 2615:
2616: =cut
2617:
2618: ######################################################################
2619: ######################################################################
2620: sub display_results {
1.196 matthew 2621: my ($r,$importbutton,$closebutton,$diropendb) = @_;
1.150 matthew 2622: my $connection = $r->connection;
2623: $r->print(&search_results_header($importbutton,$closebutton));
1.144 matthew 2624: ##
2625: ## Set viewing function
2626: ##
1.243 albertel 2627: my $viewfunction = $Views{$env{'form.viewselect'}};
1.144 matthew 2628: if (!defined($viewfunction)) {
2629: $r->print("Internal Error - Bad view selected.\n");
2630: $r->rflush();
2631: return;
2632: }
2633: ##
1.158 matthew 2634: ## $checkbox_num is a count of the number of checkboxes output on the
2635: ## page this is used only during catalogmode=groupsearch.
2636: my $checkbox_num = 0;
2637: ##
1.144 matthew 2638: ## Get the catalog controls setup
2639: ##
1.146 matthew 2640: my $action = "/adm/searchcat?phase=results";
2641: ##
1.204 matthew 2642: ## Deal with groupsearch by opening the groupsearch db file.
1.243 albertel 2643: if ($env{'form.catalogmode'} eq 'groupsearch') {
1.146 matthew 2644: if (! tie(%groupsearch_db,'GDBM_File',$diropendb,
1.148 matthew 2645: &GDBM_WRCREAT(),0640)) {
1.150 matthew 2646: $r->print('Unable to store import results.</form></body></html>');
1.146 matthew 2647: $r->rflush();
2648: return;
2649: }
1.144 matthew 2650: }
1.145 matthew 2651: ##
2652: ## Prepare the table for querying
1.243 albertel 2653: my $table = $env{'form.table'};
1.151 matthew 2654: return if (! &ensure_db_and_table($r,$table));
1.145 matthew 2655: ##
2656: ## Get the number of results
2657: my $total_results = &Apache::lonmysql::number_of_rows($table);
2658: if (! defined($total_results)) {
1.150 matthew 2659: $r->print("A MySQL error has occurred.</form></body></html>");
1.145 matthew 2660: &Apache::lonnet::logthis("lonmysql was unable to determine the number".
2661: " of rows in table ".$table);
2662: &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
2663: return;
2664: }
2665: ##
2666: ## Determine how many results we need to get
1.243 albertel 2667: $env{'form.start'} = 1 if (! exists($env{'form.start'}));
2668: $env{'form.show'} = 20 if (! exists($env{'form.show'}));
2669: if (exists($env{'form.prev'})) {
2670: $env{'form.start'} -= $env{'form.show'};
2671: } elsif (exists($env{'form.next'})) {
2672: $env{'form.start'} += $env{'form.show'};
2673: }
2674: $env{'form.start'} = 1 if ($env{'form.start'}<1);
2675: $env{'form.start'} = $total_results if ($env{'form.start'}>$total_results);
2676: my $min = $env{'form.start'};
1.145 matthew 2677: my $max;
1.243 albertel 2678: if ($env{'form.show'} eq 'all') {
1.145 matthew 2679: $max = $total_results ;
2680: } else {
1.243 albertel 2681: $max = $min + $env{'form.show'} - 1;
1.146 matthew 2682: $max = $total_results if ($max > $total_results);
1.145 matthew 2683: }
2684: ##
1.223 matthew 2685: ## Output form elements
2686: $r->print(&hidden_field('table').
2687: &hidden_field('phase').
2688: &hidden_field('persistent_db_id').
2689: &hidden_field('start')
2690: );
1.232 matthew 2691: #
2692: # Build sorting selector
1.241 matthew 2693: my @fields =
2694: (
2695: {key=>'default' },
2696: {key=>'title' },
2697: {key =>'author' },
2698: {key =>'subject'},
2699: {key =>'url',desc=>'URL'},
2700: {key =>'keywords'},
2701: {key =>'language'},
2702: {key =>'creationdate'},
2703: {key =>'lastrevisiondate'},
2704: {key =>'owner'},
2705: {key =>'copyright'},
2706: {key =>'authorspace'},
2707: {key =>'lowestgradelevel'},
2708: {key =>'highestgradelevel'},
2709: {key =>'standards',desc=>'Standards'},
2710: {key =>'count',desc=>'Number of accesses'},
2711: {key =>'stdno',desc=>'Students Attempting'},
2712: {key =>'avetries',desc=>'Average Number of Tries'},
2713: {key =>'difficulty',desc=>'Mean Degree of Difficulty'},
2714: {key =>'disc',desc=>'Mean Degree of Discrimination'},
2715: {key =>'clear',desc=>'Evaluation: Clear'},
2716: {key =>'technical',desc=>'Evaluation: Technically Correct'},
2717: {key =>'correct',desc=>'Evaluation: Material is Correct'},
2718: {key =>'helpful',desc=>'Evaluation: Material is Helpful'},
2719: {key =>'depth',desc=>'Evaluation: Material has Depth'},
2720: );
2721: my %fieldnames = &Apache::lonmeta::fieldnames();
2722: my @field_order;
2723: foreach my $field_data (@fields) {
2724: push(@field_order,$field_data->{'key'});
2725: if (! exists($field_data->{'desc'})) {
2726: $field_data->{'desc'}=$fieldnames{$field_data->{'key'}};
2727: } else {
2728: if (! defined($field_data->{'desc'})) {
2729: $field_data->{'desc'} = ucfirst($field_data->{'key'});
2730: }
2731: $field_data->{'desc'} = &mt($field_data->{'desc'});
2732: }
2733: }
2734: my %sort_fields = map {$_->{'key'},$_->{'desc'}} @fields;
2735: $sort_fields{'select_form_order'} = \@field_order;
1.248 www 2736: $env{'form.sortorder'} = 'desc' if (! exists($env{'form.sortorder'}));
2737: $env{'form.sortfield'} = 'count' if (! exists($env{'form.sortfield'}));
2738: if (! exists($env{'form.sortorder'})) {
2739: if ($env{'form.sortfield'}=~/^(count|stdno|disc|clear|technical|correct|helpful)$/) {
2740: $env{'form.sortorder'}='desc';
2741: } else {
2742: $env{'form.sortorder'}='asc';
2743: }
2744: }
1.241 matthew 2745: my $sortform = &mt('Sort by [_1] [_2]',
1.244 albertel 2746: &Apache::loncommon::select_form($env{'form.sortfield'},
1.232 matthew 2747: 'sortfield',
1.241 matthew 2748: %sort_fields),
1.244 albertel 2749: &Apache::loncommon::select_form($env{'form.sortorder'},
1.241 matthew 2750: 'sortorder',
2751: (asc =>&mt('Ascending'),
2752: desc=>&mt('Descending')
2753: ))
2754: );
1.223 matthew 2755: ##
1.145 matthew 2756: ## Output links (if necessary) for 'prev' and 'next' pages.
1.146 matthew 2757: $r->print
1.232 matthew 2758: ('<table width="100%"><tr><td width="25%" align="right">'.
1.241 matthew 2759: '<nobr>'.$sortform.'</nobr>'.
1.232 matthew 2760: '</td><td width="25%" align="right">'.
1.243 albertel 2761: &prev_next_buttons($min,$env{'form.show'},$total_results).
1.223 matthew 2762: '</td><td align="right">'.
2763: &viewoptions().'</td></tr></table>'
1.146 matthew 2764: );
1.150 matthew 2765: if ($total_results == 0) {
1.214 matthew 2766: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2">'.
1.187 www 2767: '<h3>'.&mt('There are currently no results').'.</h3>'.
1.150 matthew 2768: "</form></body></html>");
2769: return;
2770: } else {
1.232 matthew 2771: $r->print('<center>'.
2772: mt('Results [_1] to [_2] out of [_3]',
2773: $min,$max,$total_results).
2774: "</center>\n");
1.150 matthew 2775: }
1.145 matthew 2776: ##
2777: ## Get results from MySQL table
1.232 matthew 2778: my $sort_command = 'id>='.$min.' AND id<='.$max;
1.241 matthew 2779: my $order;
1.244 albertel 2780: if (exists($env{'form.sortorder'})) {
2781: if ($env{'form.sortorder'} eq 'asc') {
1.241 matthew 2782: $order = 'ASC';
1.244 albertel 2783: } elsif ($env{'form.sortorder'} eq 'desc') {
1.241 matthew 2784: $order = 'DESC';
2785: } else {
2786: $order = '';
2787: }
2788: } else {
2789: $order = '';
2790: }
1.244 albertel 2791: if ($env{'form.sortfield'} ne 'default' &&
2792: exists($sort_fields{$env{'form.sortfield'}})) {
2793: $sort_command = $env{'form.sortfield'}.' IS NOT NULL '.
2794: 'ORDER BY '.$env{'form.sortfield'}.' '.$order.
1.249 www 2795: ' LIMIT '.($min-1).','.($max-$min+1);
1.232 matthew 2796: }
2797: my @Results = &Apache::lonmysql::get_rows($table,$sort_command);
1.145 matthew 2798: ##
2799: ## Loop through the results and output them.
1.144 matthew 2800: foreach my $row (@Results) {
1.150 matthew 2801: if ($connection->aborted()) {
1.162 www 2802: &cleanup();
1.150 matthew 2803: return;
2804: }
1.144 matthew 2805: my %Fields = %{&parse_row(@$row)};
1.145 matthew 2806: my $output="<p>\n";
1.210 matthew 2807: if (! defined($Fields{'title'}) || $Fields{'title'} eq '') {
2808: $Fields{'title'} = 'Untitled';
2809: }
1.158 matthew 2810: my $prefix=&catalogmode_output($Fields{'title'},$Fields{'url'},
2811: $Fields{'id'},$checkbox_num++);
1.144 matthew 2812: # Render the result into html
1.150 matthew 2813: $output.= &$viewfunction($prefix,%Fields);
1.145 matthew 2814: # Print them out as they come in.
1.144 matthew 2815: $r->print($output);
2816: $r->rflush();
2817: }
2818: if (@Results < 1) {
1.187 www 2819: $r->print(&mt("There were no results matching your query"));
1.147 matthew 2820: } else {
2821: $r->print
1.148 matthew 2822: ('<center>'.
1.243 albertel 2823: &prev_next_buttons($min,$env{'form.show'},$total_results,
2824: "table=".$env{'form.table'}.
1.147 matthew 2825: "&phase=results".
2826: "&persistent_db_id=".
1.243 albertel 2827: $env{'form.persistent_db_id'})
1.148 matthew 2828: ."</center>\n"
1.147 matthew 2829: );
1.144 matthew 2830: }
1.150 matthew 2831: $r->print("</form></body></html>");
1.144 matthew 2832: $r->rflush();
1.150 matthew 2833: untie %groupsearch_db if (tied(%groupsearch_db));
1.144 matthew 2834: return;
2835: }
2836:
2837: ######################################################################
2838: ######################################################################
2839:
2840: =pod
2841:
1.158 matthew 2842: =item &catalogmode_output($title,$url,$fnum,$checkbox_num)
1.145 matthew 2843:
2844: Returns html needed for the various catalog modes. Gets inputs from
1.243 albertel 2845: $env{'form.catalogmode'}. Stores data in %groupsearch_db.
1.145 matthew 2846:
2847: =cut
2848:
2849: ######################################################################
2850: ######################################################################
2851: sub catalogmode_output {
2852: my $output = '';
1.158 matthew 2853: my ($title,$url,$fnum,$checkbox_num) = @_;
1.243 albertel 2854: if ($env{'form.catalogmode'} eq 'interactive') {
1.150 matthew 2855: $title=~ s/\'/\\\'/g;
1.243 albertel 2856: if ($env{'form.catalogmode'} eq 'interactive') {
1.145 matthew 2857: $output.=<<END
2858: <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
2859: onClick="javascript:select_data('$title','$url')">
2860: </font>
2861: END
2862: }
1.243 albertel 2863: } elsif ($env{'form.catalogmode'} eq 'groupsearch') {
1.145 matthew 2864: $groupsearch_db{"pre_${fnum}_link"}=$url;
2865: $groupsearch_db{"pre_${fnum}_title"}=$title;
2866: $output.=<<END;
2867: <font size='-1'>
2868: <input type="checkbox" name="returnvalues" value="SELECT"
1.158 matthew 2869: onClick="javascript:queue($checkbox_num,$fnum)" />
1.145 matthew 2870: </font>
2871: END
2872: }
2873: return $output;
2874: }
2875: ######################################################################
2876: ######################################################################
2877:
2878: =pod
2879:
1.204 matthew 2880: =item &parse_row()
1.144 matthew 2881:
2882: Parse a row returned from the database.
2883:
2884: =cut
2885:
2886: ######################################################################
2887: ######################################################################
2888: sub parse_row {
2889: my @Row = @_;
2890: my %Fields;
1.204 matthew 2891: if (! scalar(@Datatypes)) {
2892: &set_up_table_structure();
2893: }
1.144 matthew 2894: for (my $i=0;$i<=$#Row;$i++) {
1.170 matthew 2895: $Fields{$Datatypes[$i]->{'name'}}=&Apache::lonnet::unescape($Row[$i]);
1.144 matthew 2896: }
2897: $Fields{'language'} =
1.198 www 2898: &Apache::loncommon::languagedescription($Fields{'language'});
1.144 matthew 2899: $Fields{'copyrighttag'} =
2900: &Apache::loncommon::copyrightdescription($Fields{'copyright'});
2901: $Fields{'mimetag'} =
2902: &Apache::loncommon::filedescription($Fields{'mime'});
2903: return \%Fields;
2904: }
1.126 matthew 2905:
2906: ###########################################################
2907: ###########################################################
2908:
2909: =pod
2910:
2911: =item &parse_raw_result()
2912:
2913: Takes a line from the file of results and parse it. Returns a hash
1.198 www 2914: with keys according to column labels
1.126 matthew 2915:
2916: In addition, the following tags are set by calling the appropriate
1.198 www 2917: lonnet function: 'language', 'copyrighttag', 'mimetag'.
1.126 matthew 2918:
2919: The 'title' field is set to "Untitled" if the title field is blank.
2920:
2921: 'abstract' and 'keywords' are truncated to 200 characters.
2922:
2923: =cut
2924:
2925: ###########################################################
2926: ###########################################################
2927: sub parse_raw_result {
2928: my ($result,$hostname) = @_;
1.204 matthew 2929: # conclude from self to others regarding fields
1.206 matthew 2930: my %Fields=&LONCAPA::lonmetadata::metadata_col_to_hash
2931: (map {
2932: &Apache::lonnet::unescape($_);
2933: } (split(/\,/,$result)) );
1.126 matthew 2934: return %Fields;
2935: }
2936:
2937: ###########################################################
2938: ###########################################################
2939:
2940: =pod
2941:
2942: =item &handle_custom_fields()
2943:
2944: =cut
2945:
2946: ###########################################################
2947: ###########################################################
2948: sub handle_custom_fields {
2949: my @results = @{shift()};
2950: my $customshow='';
2951: my $extrashow='';
2952: my @customfields;
1.243 albertel 2953: if ($env{'form.customshow'}) {
2954: $customshow=$env{'form.customshow'};
1.126 matthew 2955: $customshow=~s/[^\w\s]//g;
2956: my @fields=map {
2957: "<font color=\"#008000\">$_:</font><!-- $_ -->";
2958: } split(/\s+/,$customshow);
2959: @customfields=split(/\s+/,$customshow);
2960: if ($customshow) {
2961: $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
2962: }
2963: }
2964: my $customdata='';
2965: my %customhash;
2966: foreach my $result (@results) {
2967: if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
2968: my $tmp=$result;
2969: $tmp=~s/^custom\=//;
2970: my ($k,$v)=map {&Apache::lonnet::unescape($_);
2971: } split(/\,/,$tmp);
2972: $customhash{$k}=$v;
2973: }
2974: }
2975: return ($extrashow,\@customfields,\%customhash);
1.41 harris41 2976: }
2977:
1.122 matthew 2978: ######################################################################
2979: ######################################################################
2980:
1.125 matthew 2981: =pod
2982:
1.204 matthew 2983: =item &search_results_header()
1.125 matthew 2984:
1.130 matthew 2985: Output the proper html headers and javascript code to deal with different
2986: calling modes.
2987:
1.243 albertel 2988: Takes most inputs directly from %env, except $mode.
1.130 matthew 2989:
2990: =over 4
2991:
2992: =item $mode is either (at this writing) 'Basic' or 'Advanced'
2993:
2994: =back
1.126 matthew 2995:
1.130 matthew 2996: The following environment variables are checked:
1.126 matthew 2997:
2998: =over 4
2999:
3000: =item 'form.catalogmode'
3001:
3002: Checked for 'interactive' and 'groupsearch'.
3003:
3004: =item 'form.mode'
3005:
3006: Checked for existance & 'edit' mode.
3007:
3008: =item 'form.form'
3009:
1.191 albertel 3010: Contains the name of the form that has the input fields to set
3011:
1.126 matthew 3012: =item 'form.element'
3013:
1.191 albertel 3014: the name of the input field to put the URL into
3015:
3016: =item 'form.titleelement'
3017:
3018: the name of the input field to put the title into
3019:
1.126 matthew 3020: =back
3021:
1.125 matthew 3022: =cut
3023:
3024: ######################################################################
3025: ######################################################################
3026: sub search_results_header {
1.150 matthew 3027: my ($importbutton,$closebutton) = @_;
1.196 matthew 3028: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.125 matthew 3029: my $result = '';
3030: # output beginning of search page
3031: # conditional output of script functions dependent on the mode in
3032: # which the search was invoked
1.243 albertel 3033: if ($env{'form.catalogmode'} eq 'interactive'){
3034: if (! exists($env{'form.mode'}) || $env{'form.mode'} ne 'edit') {
1.125 matthew 3035: $result.=<<SCRIPT;
3036: <script type="text/javascript">
3037: function select_data(title,url) {
3038: changeTitle(title);
3039: changeURL(url);
1.150 matthew 3040: parent.close();
1.125 matthew 3041: }
3042: function changeTitle(val) {
1.153 matthew 3043: if (parent.opener.inf.document.forms.resinfo.elements.t) {
3044: parent.opener.inf.document.forms.resinfo.elements.t.value=val;
1.125 matthew 3045: }
3046: }
3047: function changeURL(val) {
1.153 matthew 3048: if (parent.opener.inf.document.forms.resinfo.elements.u) {
3049: parent.opener.inf.document.forms.resinfo.elements.u.value=val;
1.125 matthew 3050: }
3051: }
3052: </script>
3053: SCRIPT
1.243 albertel 3054: } elsif ($env{'form.mode'} eq 'edit') {
3055: my $form = $env{'form.form'};
3056: my $element = $env{'form.element'};
3057: my $titleelement = $env{'form.titleelement'};
1.191 albertel 3058: my $changetitle;
3059: if (!$titleelement) {
3060: $changetitle='function changeTitle(val) {}';
3061: } else {
3062: $changetitle=<<END;
3063: function changeTitle(val) {
3064: if (parent.targetwin.document) {
3065: parent.targetwin.document.forms["$form"].elements["$titleelement"].value=val;
3066: } else {
3067: var url = 'forms[\"$form\"].elements[\"$titleelement\"].value';
3068: alert("Unable to transfer data to "+url);
3069: }
3070: }
3071: END
3072: }
3073:
1.125 matthew 3074: $result.=<<SCRIPT;
3075: <script type="text/javascript">
3076: function select_data(title,url) {
3077: changeURL(url);
1.191 albertel 3078: changeTitle(title);
1.150 matthew 3079: parent.close();
1.125 matthew 3080: }
1.191 albertel 3081: $changetitle
1.125 matthew 3082: function changeURL(val) {
1.150 matthew 3083: if (parent.targetwin.document) {
3084: parent.targetwin.document.forms["$form"].elements["$element"].value=val;
1.125 matthew 3085: } else {
3086: var url = 'forms[\"$form\"].elements[\"$element\"].value';
3087: alert("Unable to transfer data to "+url);
3088: }
3089: }
3090: </script>
3091: SCRIPT
3092: }
3093: }
1.243 albertel 3094: $result.=<<SCRIPT if $env{'form.catalogmode'} eq 'groupsearch';
1.125 matthew 3095: <script type="text/javascript">
1.158 matthew 3096: function queue(checkbox_num,val) {
1.185 matthew 3097: if (document.forms.results.returnvalues.length != "undefined" &&
3098: typeof(document.forms.results.returnvalues.length) == "number") {
3099: if (document.forms.results.returnvalues[checkbox_num].checked) {
3100: parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
3101: } else {
3102: parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
3103: }
1.150 matthew 3104: } else {
1.185 matthew 3105: if (document.forms.results.returnvalues.checked) {
3106: parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
3107: } else {
3108: parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
3109: }
1.150 matthew 3110: }
1.125 matthew 3111: }
3112: function select_group() {
1.150 matthew 3113: parent.window.location=
1.243 albertel 3114: "/adm/groupsort?mode=$env{'form.mode'}&catalogmode=groupsearch&acts="+
1.150 matthew 3115: parent.statusframe.document.forms.statusform.elements.Queue.value;
1.125 matthew 3116: }
3117: </script>
3118: SCRIPT
1.130 matthew 3119: $result.=<<END;
3120: </head>
1.155 matthew 3121: $bodytag
1.223 matthew 3122: <form name="results" method="post" action="/adm/searchcat" >
1.150 matthew 3123: <input type="hidden" name="Queue" value="" />
3124: $importbutton
1.130 matthew 3125: END
1.125 matthew 3126: return $result;
3127: }
3128:
3129: ######################################################################
3130: ######################################################################
1.146 matthew 3131: sub search_status_header {
1.196 matthew 3132: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.238 albertel 3133: my $html=&Apache::lonxml::xmlbegin();
1.146 matthew 3134: return <<ENDSTATUS;
1.238 albertel 3135: $html
3136: <head>
3137: <title>Search Status</title></head>
1.155 matthew 3138: $bodytag
1.146 matthew 3139: <h3>Search Status</h3>
3140: Sending search request to LON-CAPA servers.<br />
3141: ENDSTATUS
3142: }
3143:
1.150 matthew 3144: sub results_link {
1.243 albertel 3145: my $basic_link = "/adm/searchcat?"."&table=".$env{'form.table'}.
3146: "&persistent_db_id=".$env{'form.persistent_db_id'};
1.150 matthew 3147: my $results_link = $basic_link."&phase=results".
1.151 matthew 3148: "&pause=1"."&start=1";
1.150 matthew 3149: return $results_link;
3150: }
3151:
1.146 matthew 3152: ######################################################################
3153: ######################################################################
3154: sub print_frames_interface {
3155: my $r = shift;
1.243 albertel 3156: my $basic_link = "/adm/searchcat?"."&table=".$env{'form.table'}.
3157: "&persistent_db_id=".$env{'form.persistent_db_id'};
1.146 matthew 3158: my $run_search_link = $basic_link."&phase=run_search";
1.150 matthew 3159: my $results_link = &results_link();
1.238 albertel 3160: my $html=&Apache::lonxml::xmlbegin();
1.146 matthew 3161: my $result = <<"ENDFRAMES";
1.238 albertel 3162: $html
1.146 matthew 3163: <head>
1.150 matthew 3164: <script>
3165: var targetwin = opener;
1.158 matthew 3166: var queue = '';
1.150 matthew 3167: </script>
1.146 matthew 3168: <title>LON-CAPA Digital Library Search Results</title>
3169: </head>
1.176 www 3170: <frameset rows="150,*">
1.146 matthew 3171: <frame name="statusframe" src="$run_search_link">
3172: <frame name="resultsframe" src="$results_link">
3173: </frameset>
3174: </html>
3175: ENDFRAMES
3176:
3177: $r->print($result);
3178: return;
3179: }
3180:
3181: ######################################################################
3182: ######################################################################
1.125 matthew 3183:
1.224 matthew 3184: sub has_stat_data {
3185: my ($values) = @_;
3186: if ( (defined($values->{'count'}) && $values->{'count'} ne '') ||
3187: (defined($values->{'stdno'}) && $values->{'stdno'} ne '') ||
3188: (defined($values->{'disc'}) && $values->{'disc'} ne '') ||
3189: (defined($values->{'avetries'}) && $values->{'avetries'} ne '') ||
3190: (defined($values->{'difficulty'}) && $values->{'difficulty'} ne '')) {
3191: return 1;
3192: }
3193: return 0;
3194: }
3195:
3196: sub statfields {
3197: return ('count','stdno','disc','avetries','difficulty');
3198: }
3199:
3200: sub has_eval_data {
3201: my ($values) = @_;
3202: if ( (defined($values->{'clear'}) && $values->{'clear'} ne '') ||
3203: (defined($values->{'technical'}) && $values->{'technical'} ne '') ||
3204: (defined($values->{'correct'}) && $values->{'correct'} ne '') ||
3205: (defined($values->{'helpful'}) && $values->{'helpful'} ne '') ||
3206: (defined($values->{'depth'}) && $values->{'depth'} ne '')) {
3207: return 1;
3208: }
3209: return 0;
3210: }
3211:
3212: sub evalfields {
3213: return ('clear','technical','correct','helpful','depth');
3214: }
3215:
3216: ######################################################################
3217: ######################################################################
3218:
1.122 matthew 3219: =pod
3220:
3221: =item Metadata Viewing Functions
3222:
3223: Output is a HTML-ified string.
1.204 matthew 3224:
1.122 matthew 3225: Input arguments are title, author, subject, url, keywords, version,
3226: notes, short abstract, mime, language, creation date,
1.126 matthew 3227: last revision date, owner, copyright, hostname, and
1.122 matthew 3228: extra custom metadata to show.
3229:
3230: =over 4
3231:
3232: =item &detailed_citation_view()
3233:
3234: =cut
3235:
3236: ######################################################################
3237: ######################################################################
1.50 harris41 3238: sub detailed_citation_view {
1.150 matthew 3239: my ($prefix,%values) = @_;
1.218 matthew 3240: my $result;
1.247 www 3241: my $jumpurl=$values{'url'};
3242: $jumpurl=~s/^\/ext\//http\:\/\//;
1.218 matthew 3243: $result .= '<b>'.$prefix.
1.223 matthew 3244: '<img src="'.&Apache::loncommon::icon($values{'url'}).' " />'.' '.
1.247 www 3245: '<a href="'.$jumpurl.'" '.
1.218 matthew 3246: 'target="search_preview">'.$values{'title'}."</a></b>\n";
3247: $result .= "<p>\n";
3248: $result .= '<b>'.$values{'author'}.'</b>,'.
3249: ' <i>'.$values{'owner'}.'</i><br />';
3250: foreach my $field
3251: (
1.223 matthew 3252: { name=>'url',
3253: translate => '<b>URL:</b> [_1]',
3254: special => 'url link',},
1.218 matthew 3255: { name=>'subject',
3256: translate => '<b>Subject:</b> [_1]',},
3257: { name=>'keywords',
3258: translate => '<b>Keywords:</b> [_1]',},
3259: { name=>'notes',
3260: translate => '<b>Notes:</b> [_1]',},
3261: { name=>'mimetag',
3262: translate => '<b>MIME Type:</b> [_1]',},
3263: { name=>'standards',
3264: translate => '<b>Standards:</b>[_1]',},
3265: { name=>'copyrighttag',
3266: translate => '<b>Copyright/Distribution:</b> [_1]',},
1.223 matthew 3267: { name=>'count',
1.225 matthew 3268: format => "%d",
1.223 matthew 3269: translate => '<b>Access Count:</b> [_1]',},
1.218 matthew 3270: { name=>'stdno',
1.225 matthew 3271: format => "%d",
1.218 matthew 3272: translate => '<b>Number of Students:</b> [_1]',},
3273: { name=>'avetries',
1.225 matthew 3274: format => "%.2f",
1.218 matthew 3275: translate => '<b>Average Tries:</b> [_1]',},
3276: { name=>'disc',
1.225 matthew 3277: format => "%.2f",
1.218 matthew 3278: translate => '<b>Degree of Discrimination:</b> [_1]',},
3279: { name=>'difficulty',
1.225 matthew 3280: format => "%.2f",
1.218 matthew 3281: translate => '<b>Degree of Difficulty:</b> [_1]',},
3282: { name=>'clear',
1.225 matthew 3283: format => "%.2f",
1.218 matthew 3284: translate => '<b>Clear:</b> [_1]',},
3285: { name=>'depth',
1.225 matthew 3286: format => "%.2f",
1.218 matthew 3287: translate => '<b>Depth:</b> [_1]',},
3288: { name=>'helpful',
1.225 matthew 3289: format => "%.2f",
1.218 matthew 3290: translate => '<b>Helpful:</b> [_1]',},
3291: { name=>'correct',
1.225 matthew 3292: format => "%.2f",
1.224 matthew 3293: translate => '<b>Correct:</b> [_1]',},
1.218 matthew 3294: { name=>'technical',
1.225 matthew 3295: format => "%.2f",
1.218 matthew 3296: translate => '<b>Technical:</b> [_1]',},
1.225 matthew 3297: { name=>'comefrom_list',
3298: type => 'list',
3299: translate => 'Resources that lead up to this resource in maps',},
3300: { name=>'goto_list',
3301: type => 'list',
3302: translate => 'Resources that follow this resource in maps',},
1.226 matthew 3303: { name=>'sequsage_list',
1.225 matthew 3304: type => 'list',
3305: translate => 'Resources using or importing resource',},
1.218 matthew 3306: ) {
1.225 matthew 3307: next if (! exists($values{$field->{'name'}}) ||
3308: $values{$field->{'name'}} eq '');
3309: if (exists($field->{'type'}) && $field->{'type'} eq 'list') {
3310: $result .= '<b>'.&mt($field->{'translate'}).'</b><ul>';
3311: foreach my $item (split(',',$values{$field->{'name'}})){
3312: $result .= '<li>'.
3313: '<a target="search_preview" '.
1.247 www 3314: 'href="'.$jumpurl.'">'.$item.'</a></li>';
1.225 matthew 3315: }
3316: $result .= '</ul>';
3317: } elsif (exists($field->{'format'}) && $field->{'format'} ne ''){
3318: $result.= &mt($field->{'translate'},
3319: sprintf($field->{'format'},
1.230 matthew 3320: $values{$field->{'name'}}))."<br />\n";
1.225 matthew 3321: } else {
1.223 matthew 3322: if ($field->{'special'} eq 'url link') {
3323: $result.=
1.225 matthew 3324: &mt($field->{'translate'},
1.247 www 3325: '<a href="'.$jumpurl.'" '.
1.225 matthew 3326: 'target="search_preview">'.
3327: $values{$field->{'name'}}.
3328: '</a>');
1.223 matthew 3329: } else {
3330: $result.= &mt($field->{'translate'},
3331: $values{$field->{'name'}});
3332: }
3333: $result .= "<br />\n";
1.225 matthew 3334: }
1.223 matthew 3335: }
3336: $result .= "</p>";
3337: if (exists($values{'extrashow'}) && $values{'extrashow'} ne '') {
3338: $result .= '<p>'.$values{'extrashow'}.'</p>';
3339: }
3340: if (exists($values{'shortabstract'}) && $values{'shortabstract'} ne '') {
3341: $result .= '<p>'.$values{'shortabstract'}.'</p>';
1.218 matthew 3342: }
3343: $result .= '<hr align="left" width="200" noshade />'."\n";
1.50 harris41 3344: return $result;
1.222 matthew 3345: }
3346:
3347: ######################################################################
3348: ######################################################################
3349:
1.122 matthew 3350: =pod
3351:
3352: =item &summary_view()
3353:
3354: =cut
3355: ######################################################################
3356: ######################################################################
1.50 harris41 3357: sub summary_view {
1.150 matthew 3358: my ($prefix,%values) = @_;
1.192 albertel 3359: my $icon=&Apache::loncommon::icon($values{'url'});
1.241 matthew 3360: my $result=qq{$prefix<img src="$icon" />};
1.244 albertel 3361: if (exists($env{'form.sortfield'}) &&
3362: $env{'form.sortfield'} !~ /^(default|
1.241 matthew 3363: author|
3364: url|
3365: title|
3366: owner|
3367: lastrevisiondate|
3368: copyright)$/x) {
1.244 albertel 3369: my $tmp = $values{$env{'form.sortfield'}};
1.241 matthew 3370: if (! defined($tmp)) { $tmp = 'undefined'; }
3371: $result .= ' '.$tmp.' ';
3372: }
1.247 www 3373: my $jumpurl=$values{'url'};
3374: $jumpurl=~s/^\/ext\//http\:\/\//;
3375:
1.241 matthew 3376: $result.=<<END;
1.247 www 3377: <a href="$jumpurl"
1.241 matthew 3378: target='search_preview'>$values{'title'}</a><br />
3379: $values{'author'}, $values{'owner'} -- $values{'lastrevisiondate'}<br />
1.126 matthew 3380: $values{'copyrighttag'}<br />
3381: $values{'extrashow'}
1.50 harris41 3382: </p>
1.150 matthew 3383: <hr align='left' width='200' noshade />
1.50 harris41 3384: END
3385: return $result;
3386: }
3387:
1.122 matthew 3388: ######################################################################
3389: ######################################################################
3390:
3391: =pod
3392:
1.150 matthew 3393: =item &compact_view()
3394:
3395: =cut
3396:
3397: ######################################################################
3398: ######################################################################
3399: sub compact_view {
3400: my ($prefix,%values) = @_;
1.247 www 3401: my $jumpurl=$values{'url'};
3402: $jumpurl=~s/^\/ext\//http\:\/\//;
3403:
1.223 matthew 3404: my $result =
1.241 matthew 3405: $prefix.'<img src="'.&Apache::loncommon::icon($values{'url'}).'">';
1.244 albertel 3406: if (exists($env{'form.sortfield'}) &&
3407: $env{'form.sortfield'} !~ /^(default|author|url|title)$/) {
3408: my $tmp = $values{$env{'form.sortfield'}};
1.241 matthew 3409: if (! defined($tmp)) { $tmp = 'undefined'; }
3410: $result .= ' '.$tmp.' ';
3411: }
1.247 www 3412: $result.=' <a href="'.$jumpurl.'" target="search_preview">'.
1.223 matthew 3413: $values{'title'}.'</a>'.(' 'x2).
1.247 www 3414: '<b>'.$values{'author'}.'</b> ('.$values{'domain'}.')<br />';
1.150 matthew 3415: return $result;
3416: }
3417:
3418:
3419: ######################################################################
3420: ######################################################################
3421:
3422: =pod
3423:
1.122 matthew 3424: =item &fielded_format_view()
3425:
3426: =cut
3427:
3428: ######################################################################
3429: ######################################################################
1.50 harris41 3430: sub fielded_format_view {
1.150 matthew 3431: my ($prefix,%values) = @_;
1.192 albertel 3432: my $icon=&Apache::loncommon::icon($values{'url'});
1.222 matthew 3433: my %Translated = &Apache::lonmeta::fieldnames();
1.247 www 3434: my $jumpurl=$values{'url'};
3435: $jumpurl=~s/^\/ext\//http\:\/\//;
3436:
1.50 harris41 3437: my $result=<<END;
1.192 albertel 3438: $prefix <img src="$icon" />
1.222 matthew 3439: <dl>
3440: <dt>URL:</dt>
1.247 www 3441: <dd><a href="$jumpurl"
1.222 matthew 3442: target='search_preview'>$values{'url'}</a></dd>
1.50 harris41 3443: END
1.239 matthew 3444: foreach my $field ('title','author','domain','subject','keywords','notes',
1.222 matthew 3445: 'mimetag','language','creationdate','lastrevisiondate',
3446: 'owner','copyrighttag','hostname','abstract') {
3447: $result .= (' 'x4).'<dt>'.$Translated{$field}.'</dt>'."\n".
3448: (' 'x8).'<dd>'.$values{$field}.'</dd>'."\n";
3449: }
3450: if (&has_stat_data(\%values)) {
3451: foreach my $field (&statfields()) {
3452: $result .= (' 'x4).'<dt>'.$Translated{$field}.'</dt>'."\n".
3453: (' 'x8).'<dd>'.$values{$field}.'</dd>'."\n";
3454: }
3455: }
3456: if (&has_eval_data(\%values)) {
3457: foreach my $field (&evalfields()) {
3458: $result .= (' 'x4).'<dt>'.$Translated{$field}.'</dt>'."\n".
3459: (' 'x8).'<dd>'.$values{$field}.'</dd>'."\n";
3460: }
3461: }
3462: $result .= "</dl>\n";
3463: $result .= $values{'extrashow'};
3464: $result .= '<hr align="left" width="200" noshade />'."\n";
1.50 harris41 3465: return $result;
3466: }
3467:
1.122 matthew 3468: ######################################################################
3469: ######################################################################
3470:
3471: =pod
3472:
3473: =item &xml_sgml_view()
3474:
3475: =back
3476:
3477: =cut
3478:
3479: ######################################################################
3480: ######################################################################
1.50 harris41 3481: sub xml_sgml_view {
1.150 matthew 3482: my ($prefix,%values) = @_;
1.222 matthew 3483: my $xml = '<LonCapaResource>'."\n";
3484: # The usual suspects
1.239 matthew 3485: foreach my $field ('url','title','author','subject','keywords','notes','domain') {
1.222 matthew 3486: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3487: }
3488: #
3489: $xml .= "<mimeInfo>\n";
3490: foreach my $field ('mime','mimetag') {
3491: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3492: }
3493: $xml .= "</mimeInfo>\n";
3494: #
3495: $xml .= "<languageInfo>\n";
3496: foreach my $field ('language','languagetag') {
3497: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3498: }
3499: $xml .= "</languageInfo>\n";
3500: #
3501: foreach my $field ('creationdate','lastrevisiondate','owner') {
3502: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3503: }
3504: #
3505: $xml .= "<copyrightInfo>\n";
3506: foreach my $field ('copyright','copyrighttag') {
3507: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3508: }
3509: $xml .= "</copyrightInfo>\n";
3510: $xml .= qq{<repositoryLocation>$values{'hostname'}</repositoryLocation>}.
3511: "\n";
3512: $xml .= qq{<shortabstract>$values{'shortabstract'}</shortabstract>}."\n";
3513: #
3514: if (&has_stat_data(\%values)){
3515: $xml .= "<problemstatistics>\n";
3516: foreach my $field (&statfields()) {
3517: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3518: }
3519: $xml .= "</problemstatistics>\n";
3520: }
3521: #
3522: if (&has_eval_data(\%values)) {
3523: $xml .= "<evaluation>\n";
3524: foreach my $field (&evalfields) {
3525: $xml .= qq{<$field>$values{$field}</$field>}."\n";
3526: }
3527: $xml .= "</evaluation>\n";
3528: }
3529: #
3530: $xml .= "</LonCapaResource>\n";
1.212 matthew 3531: $xml = &HTML::Entities::encode($xml,'<>&');
1.50 harris41 3532: my $result=<<END;
1.150 matthew 3533: $prefix
1.56 harris41 3534: <pre>
1.212 matthew 3535: $xml
1.56 harris41 3536: </pre>
1.126 matthew 3537: $values{'extrashow'}
1.150 matthew 3538: <hr align='left' width='200' noshade />
1.50 harris41 3539: END
3540: return $result;
1.60 harris41 3541: }
3542:
1.122 matthew 3543: ######################################################################
3544: ######################################################################
3545:
3546: =pod
3547:
3548: =item &filled() see if field is filled.
3549:
3550: =cut
3551:
3552: ######################################################################
3553: ######################################################################
1.98 harris41 3554: sub filled {
3555: my ($field)=@_;
3556: if ($field=~/\S/ && $field ne 'any') {
1.204 matthew 3557: return 1;
3558: } else {
3559: return 0;
1.61 harris41 3560: }
1.60 harris41 3561: }
3562:
1.122 matthew 3563: ######################################################################
3564: ######################################################################
3565:
3566: =pod
3567:
1.228 matthew 3568: =item &output_unparsed_phrase_error()
3569:
3570: =cut
3571:
3572: ######################################################################
3573: ######################################################################
3574: sub output_unparsed_phrase_error {
3575: my ($r,$closebutton,$parms,$hidden_fields,$field)=@_;
3576: my $errorstring;
3577: if ($field eq 'basicexp') {
1.243 albertel 3578: $errorstring = &mt('Unable to understand the search phrase <i>[_1]</i>. Please modify your search.',$env{'form.basicexp'});
1.228 matthew 3579: } else {
1.243 albertel 3580: $errorstring = &mt('Unable to understand the search phrase <b>[_1]</b>:<i>[_2]</i>.',$field,$env{'form.'.$field});
1.228 matthew 3581: }
3582: my $bodytag = &Apache::loncommon::bodytag('Search');
3583: my $heading = &mt('Unparsed Field');
3584: my $revise = &mt('Revise search request');
3585: # make query information persistent to allow for subsequent revision
1.238 albertel 3586: my $html=&Apache::lonxml::xmlbegin();
1.228 matthew 3587: $r->print(<<ENDPAGE);
1.238 albertel 3588: $html
1.228 matthew 3589: <head>
3590: <title>The LearningOnline Network with CAPA</title>
3591: </head>
3592: $bodytag
3593: <form method="post" action="/adm/searchcat">
3594: $hidden_fields
3595: $closebutton
3596: <hr />
3597: <h2>$heading</h2>
3598: <p>
3599: $errorstring
3600: </p>
3601: <p>
1.243 albertel 3602: <a href="/adm/searchcat?$parms&persistent_db_id=$env{'form.persistent_db_id'}">$revise</a>
1.228 matthew 3603: </p>
3604: </body>
3605: </html>
3606: ENDPAGE
3607: }
3608:
3609: ######################################################################
3610: ######################################################################
3611:
3612: =pod
3613:
1.122 matthew 3614: =item &output_blank_field_error()
3615:
1.151 matthew 3616: Output a complete page that indicates the user has not filled in enough
3617: information to do a search.
3618:
3619: Inputs: $r (Apache request handle), $closebutton, $parms.
3620:
3621: Returns: nothing
3622:
3623: $parms is extra information to include in the 'Revise search request' link.
3624:
1.122 matthew 3625: =cut
3626:
3627: ######################################################################
3628: ######################################################################
1.98 harris41 3629: sub output_blank_field_error {
1.196 matthew 3630: my ($r,$closebutton,$parms,$hidden_fields)=@_;
1.228 matthew 3631: my $bodytag=&Apache::loncommon::bodytag('Search');
3632: my $errormsg = &mt('You did not fill in enough information for the search to be started. You need to fill in relevant fields on the search page in order for a query to be processed.');
3633: my $revise = &mt('Revise Search Request');
3634: my $heading = &mt('Unactionable Search Queary');
1.238 albertel 3635: my $html=&Apache::lonxml::xmlbegin();
1.228 matthew 3636: $r->print(<<ENDPAGE);
1.238 albertel 3637: $html
1.98 harris41 3638: <head>
3639: <title>The LearningOnline Network with CAPA</title>
3640: </head>
1.155 matthew 3641: $bodytag
1.98 harris41 3642: <form method="post" action="/adm/searchcat">
1.145 matthew 3643: $hidden_fields
1.98 harris41 3644: $closebutton
3645: <hr />
1.228 matthew 3646: <h2>$heading</h2>
1.98 harris41 3647: <p>
1.228 matthew 3648: $errormsg
3649: </p>
3650: <p>
1.243 albertel 3651: <a href="/adm/searchcat?$parms&persistent_db_id=$env{'form.persistent_db_id'}">$revise</a>
1.98 harris41 3652: </p>
3653: </body>
3654: </html>
1.228 matthew 3655: ENDPAGE
3656: return;
1.98 harris41 3657: }
3658:
1.122 matthew 3659: ######################################################################
3660: ######################################################################
3661:
3662: =pod
3663:
3664: =item &output_date_error()
3665:
3666: Output a full html page with an error message.
3667:
1.145 matthew 3668: Inputs:
3669:
3670: $r, the request pointer.
3671: $message, the error message for the user.
3672: $closebutton, the specialized close button needed for groupsearch.
3673:
1.122 matthew 3674: =cut
3675:
3676: ######################################################################
3677: ######################################################################
1.60 harris41 3678: sub output_date_error {
1.196 matthew 3679: my ($r,$message,$closebutton,$hidden_fields)=@_;
1.60 harris41 3680: # make query information persistent to allow for subsequent revision
1.196 matthew 3681: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.238 albertel 3682: my $html=&Apache::lonxml::xmlbegin();
1.122 matthew 3683: $r->print(<<RESULTS);
1.238 albertel 3684: $html
1.60 harris41 3685: <head>
3686: <title>The LearningOnline Network with CAPA</title>
3687: </head>
1.155 matthew 3688: $bodytag
1.98 harris41 3689: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
1.60 harris41 3690: <h1>Search Catalog</h1>
3691: <form method="post" action="/adm/searchcat">
1.145 matthew 3692: $hidden_fields
1.60 harris41 3693: <input type='button' value='Revise search request'
1.98 harris41 3694: onClick='this.form.submit();' />
1.60 harris41 3695: $closebutton
1.98 harris41 3696: <hr />
1.151 matthew 3697: <h3>Error</h3>
1.60 harris41 3698: <p>
3699: $message
3700: </p>
3701: </body>
3702: </html>
3703: RESULTS
1.101 harris41 3704: }
3705:
1.122 matthew 3706: ######################################################################
3707: ######################################################################
3708:
3709: =pod
3710:
3711: =item &start_fresh_session()
3712:
1.142 matthew 3713: Cleans the global %groupsearch_db by removing all fields which begin with
1.122 matthew 3714: 'pre_' or 'store'.
3715:
3716: =cut
3717:
3718: ######################################################################
3719: ######################################################################
1.101 harris41 3720: sub start_fresh_session {
1.142 matthew 3721: delete $groupsearch_db{'mode_catalog'};
3722: foreach (keys %groupsearch_db) {
1.101 harris41 3723: if ($_ =~ /^pre_/) {
1.142 matthew 3724: delete $groupsearch_db{$_};
1.101 harris41 3725: }
3726: if ($_ =~ /^store/) {
1.142 matthew 3727: delete $groupsearch_db{$_};
1.101 harris41 3728: }
1.109 harris41 3729: }
1.3 harris41 3730: }
1.1 www 3731:
3732: 1;
1.162 www 3733:
3734: sub cleanup {
1.163 www 3735: if (tied(%groupsearch_db)) {
3736: unless (untie(%groupsearch_db)) {
3737: &Apache::lonnet::logthis('Failed cleanup searchcat: groupsearch_db');
3738: }
3739: }
1.167 www 3740: &untiehash();
1.162 www 3741: &Apache::lonmysql::disconnect_from_db();
1.252 ! albertel 3742: return OK;
1.162 www 3743: }
1.98 harris41 3744:
1.1 www 3745: __END__
1.105 harris41 3746:
1.121 matthew 3747: =pod
1.105 harris41 3748:
1.121 matthew 3749: =back
1.105 harris41 3750:
3751: =cut
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