1: # The LearningOnline Network with CAPA
2: # Metadata display handler
3: #
4: # $Id: lonmeta.pm,v 1.46 2003/12/29 17:11:53 www Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27:
28:
29: package Apache::lonmeta;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::lonnet();
34: use Apache::loncommon();
35: use Apache::lonhtmlcommon();
36: use Apache::lonmsg;
37: use Apache::lonpublisher;
38: use Apache::lonlocal;
39: use Apache::lonmysql;
40:
41: # MySQL table columns
42:
43: my @columns;
44:
45: # ----------------------------------------- Fetch and evaluate dynamic metadata
46:
47: sub dynamicmeta {
48: my $url=&Apache::lonnet::declutter(shift);
49: $url=~s/\.meta$//;
50: my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//);
51: my $regexp=$url;
52: $regexp=~s/(\W)/\\$1/g;
53: $regexp='___'.$regexp.'___';
54: my %evaldata=&Apache::lonnet::dump('nohist_resevaldata',$adomain,
55: $aauthor,$regexp);
56: my %sum=();
57: my %cnt=();
58: my %concat=();
59: my %listitems=(
60: 'course' => 'add',
61: 'goto' => 'add',
62: 'comefrom' => 'add',
63: 'avetries' => 'avg',
64: 'stdno' => 'add',
65: 'difficulty' => 'avg',
66: 'clear' => 'avg',
67: 'technical' => 'avg',
68: 'helpful' => 'avg',
69: 'correct' => 'avg',
70: 'depth' => 'avg',
71: 'comments' => 'app',
72: 'usage' => 'cnt'
73: );
74: while ($_=each(%evaldata)) {
75: my ($item,$purl,$cat)=split(/___/,$_);
76: ### Apache->request->print("\n".$_.' - '.$item.'<br />');
77: if (defined($cnt{$cat})) { $cnt{$cat}++; } else { $cnt{$cat}=1; }
78: unless ($listitems{$cat} eq 'app') {
79: if (defined($sum{$cat})) {
80: $sum{$cat}+=$evaldata{$_};
81: $concat{$cat}.=','.$item;
82: } else {
83: $sum{$cat}=$evaldata{$_};
84: $concat{$cat}=$item;
85: }
86: } else {
87: if (defined($sum{$cat})) {
88: if ($evaldata{$_}) {
89: $sum{$cat}.='<hr />'.$evaldata{$_};
90: }
91: } else {
92: $sum{$cat}=''.$evaldata{$_};
93: }
94: }
95: }
96: my %returnhash=();
97: while ($_=each(%cnt)) {
98: if ($listitems{$_} eq 'avg') {
99: $returnhash{$_}=int(($sum{$_}/$cnt{$_})*100.0+0.5)/100.0;
100: } elsif ($listitems{$_} eq 'cnt') {
101: $returnhash{$_}=$cnt{$_};
102: } else {
103: $returnhash{$_}=$sum{$_};
104: }
105: $returnhash{$_.'_list'}=$concat{$_};
106: ### Apache->request->print("\n<hr />".$_.': '.$returnhash{$_}.'<br />'.$returnhash{$_.'_list'});
107: }
108: #
109: # Deal with 'count' separately
110: $returnhash{'count'} = &access_count($url,$aauthor,$adomain);
111:
112: return %returnhash;
113: }
114:
115: sub access_count {
116: my ($src,$author,$adomain) = @_;
117: my %countdata=&Apache::lonnet::dump('nohist_accesscount',$adomain,
118: $author,$src);
119: if (! exists($countdata{$src})) {
120: return 'Not Available';
121: } else {
122: return $countdata{$src};
123: }
124: }
125:
126: # ------------------------------------- Try to make an alt tag if there is none
127:
128: sub alttag {
129: my ($base,$src)=@_;
130: my $fullpath=&Apache::lonnet::hreflocation($base,$src);
131: my $alttag=&Apache::lonnet::metadata($fullpath,'title').' '.
132: &Apache::lonnet::metadata($fullpath,'subject').' '.
133: &Apache::lonnet::metadata($fullpath,'abstract');
134: $alttag=~s/\s+/ /gs;
135: $alttag=~s/\"//gs;
136: $alttag=~s/\'//gs;
137: $alttag=~s/\s+$//gs;
138: $alttag=~s/^\s+//gs;
139: if ($alttag) { return $alttag; } else
140: { return 'No information available'; }
141: }
142:
143: # -------------------------------------------------------------- Author display
144:
145: sub authordisplay {
146: my ($aname,$adom)=@_;
147: return &Apache::loncommon::aboutmewrapper(
148: &Apache::loncommon::plainname($aname,$adom),
149: $aname,$adom,'preview').' <tt>['.$aname.'@'.$adom.']</tt>';
150: }
151:
152: # -------------------------------------------------------------- Pretty display
153:
154: sub evalgraph {
155: my $value=shift;
156: unless ($value) { return ''; }
157: my $val=int($value*10.+0.5)-10;
158: my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
159: if ($val>=20) {
160: $output.='<td width=20 bgcolor="#555555">  </td>';
161: } else {
162: $output.='<td width='.($val).' bgcolor="#555555"> </td>'.
163: '<td width='.(20-$val).' bgcolor="#FF3333"> </td>';
164: }
165: $output.='<td bgcolor="#FFFF33"> </td>';
166: if ($val>20) {
167: $output.='<td width='.($val-20).' bgcolor="#33FF33"> </td>'.
168: '<td width='.(40-$val).' bgcolor="#555555"> </td>';
169: } else {
170: $output.='<td width=20 bgcolor="#555555">  </td>';
171: }
172: $output.='<td> ('.$value.') </td></tr></table>';
173: return $output;
174: }
175:
176: sub diffgraph {
177: my $value=shift;
178: unless ($value) { return ''; }
179: my $val=int(40.0*$value+0.5);
180: my @colors=('#FF9933','#EEAA33','#DDBB33','#CCCC33',
181: '#BBDD33','#CCCC33','#DDBB33','#EEAA33');
182: my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
183: for (my $i=0;$i<8;$i++) {
184: if ($val>$i*5) {
185: $output.='<td width=5 bgcolor="'.$colors[$i].'"> </td>';
186: } else {
187: $output.='<td width=5 bgcolor="#555555"> </td>';
188: }
189: }
190: $output.='<td> ('.$value.') </td></tr></table>';
191: return $output;
192: }
193:
194: # ==================================================== Turn MySQL row into hash
195:
196: sub metadata_col_to_hash {
197: my @cols=@_;
198: my %hash=();
199: for (my $i=0; $i<=$#columns; $i++) {
200: $hash{$columns[$i]}=$cols[$i];
201: }
202: return %hash;
203: }
204:
205: # ============================================================= The field names
206:
207: sub fieldnames {
208: return &Apache::lonlocal::texthash(
209: 'title' => 'Title',
210: 'author' =>'Author(s)',
211: 'subject' => 'Subject',
212: 'keywords' => 'Keyword(s)',
213: 'notes' => 'Notes',
214: 'abstract' => 'Abstract',
215: 'lowestgradelevel' => 'Lowest Grade Level',
216: 'highestgradelevel' => 'Highest Grade Level',
217: 'standards' => 'Standards',
218: 'mime' => 'MIME Type',
219: 'language' => 'Language',
220: 'creationdate' => 'Creation Date',
221: 'lastrevisiondate' => 'Last Revision Date',
222: 'owner' => 'Publisher/Owner',
223: 'copyright' => 'Copyright/Distribution',
224: 'customdistributionfile' => 'Custom Distribution File',
225: 'obsolete' => 'Obsolete',
226: 'obsoletereplacement' => 'Suggested Replacement for Obsolete File',
227: 'count' => 'Network-wide number of accesses (hits)',
228: 'course' => 'Network-wide number of courses using resource',
229: 'usage' => 'Number of resources using or importing resource',
230: 'goto' => 'Number of resources that follow this resource in maps',
231: 'comefrom' => 'Number of resources that lead up to this resource in maps',
232: 'clear' => 'Material presented in clear way',
233: 'depth' => 'Material covered with sufficient depth',
234: 'helpful' => 'Material is helpful',
235: 'correct' => 'Material appears to be correct',
236: 'technical' => 'Resource is technically correct',
237: 'avetries' => 'Average number of tries till solved',
238: 'stdno' => 'Total number of students who have worked on this problem',
239: 'difficulty' => 'Degree of difficulty'
240: );
241: }
242:
243: # =========================================== Pretty printing of metadata field
244:
245: sub prettyprint {
246: my ($type,$value)=@_;
247: unless (defined($value)) { return ' '; }
248: # Title
249: if ($type eq 'title') {
250: return '<font size="+1" face="arial">'.$value.'</font>';
251: }
252: # Dates
253: if (($type eq 'creationdate') ||
254: ($type eq 'lastrevisiondate')) {
255: return &Apache::lonlocal::locallocaltime(
256: &Apache::lonmysql::unsqltime($value));
257: }
258: # Language
259: if ($type eq 'language') {
260: return &Apache::loncommon::languagedescription($value);
261: }
262: # Copyright
263: if ($type eq 'copyright') {
264: return &Apache::loncommon::copyrightdescription($value);
265: }
266: # MIME
267: if ($type eq 'mime') {
268: return '<img src="'.&Apache::loncommon::icon($value).'" /> '.
269: &Apache::loncommon::filedescription($value);
270: }
271: # Person
272: if (($type eq 'author') ||
273: ($type eq 'owner') ||
274: ($type eq 'modifyinguser') ||
275: ($type eq 'authorspace')) {
276: $value=~s/(\w+)(\:|\@)(\w+)/&authordisplay($1,$3)/gse;
277: return $value;
278: }
279: # File
280: if (($type eq 'customdistributionfile') ||
281: ($type eq 'obsoletereplacement') ||
282: ($type eq 'goto_list') ||
283: ($type eq 'comefrom_list') ||
284: ($type eq 'sequsage_list')) {
285: return join('<br />',map {
286: &Apache::lonnet::gettitle($_).' ['.
287: &Apache::lonhtmlcommon::crumbs(&Apache::lonnet::clutter($_),'preview').']';
288: } split(/\s*\,\s*/,$value));
289: }
290: # Evaluations
291: if (($type eq 'clear') ||
292: ($type eq 'depth') ||
293: ($type eq 'helpful') ||
294: ($type eq 'correct') ||
295: ($type eq 'technical')) {
296: return &evalgraph($value);
297: }
298: # Difficulty
299: if ($type eq 'difficulty') {
300: return &diffgraph($value);
301: }
302: # List of courses
303: if ($type=~/\_list/) {
304: return join('<br />',map {
305: my %courseinfo=&Apache::lonnet::coursedescription($_);
306: '<a href="/public/'.
307: $courseinfo{'domain'}.'/'.$courseinfo{'num'}.'/syllabus" target="preview">'.
308: $courseinfo{'description'}.'</a>';
309: } split(/\s*\,\s*/,$value));
310: }
311: # No pretty print found
312: return $value;
313: }
314: # ============================================== Pretty input of metadata field
315:
316: sub prettyinput {
317: my ($type,$value,$fieldname)=@_;
318: }
319:
320: # ================================================================ Main Handler
321:
322: sub handler {
323: my $r=shift;
324:
325: my $loaderror=&Apache::lonnet::overloaderror($r);
326: if ($loaderror) { return $loaderror; }
327:
328:
329: my $uri=$r->uri;
330:
331: unless ($uri=~/^\/\~/) {
332: # =========================================== This is not in construction space
333: my ($resdomain,$resuser)=
334: (&Apache::lonnet::declutter($uri)=~/^(\w+)\/(\w+)\//);
335:
336: $loaderror=
337: &Apache::lonnet::overloaderror($r,
338: &Apache::lonnet::homeserver($resuser,$resdomain));
339: if ($loaderror) { return $loaderror; }
340:
341: my %content=();
342:
343: # ----------------------------------------------------------- Set document type
344:
345: &Apache::loncommon::content_type($r,'text/html');
346: $r->send_http_header;
347:
348: return OK if $r->header_only;
349:
350: # ------------------------------------------------------------------- Read file
351: foreach (split(/\,/,&Apache::lonnet::metadata($uri,'keys'))) {
352: $content{$_}=&Apache::lonnet::metadata($uri,$_);
353: }
354: # ------------------------------------------------------------------ Hide stuff
355:
356: unless ($ENV{'user.adv'}) {
357: foreach ('keywords','notes','abstract','subject') {
358: $content{$_}='<i>- '.&mt('not displayed').' -</i>';
359: }
360: }
361:
362: # --------------------------------------------------------------- Render Output
363: # displayed url
364: my ($thisversion)=($uri=~/\.(\d+)\.(\w+)\.meta$/);
365: my $disuri=&Apache::lonnet::clutter($uri);
366: $disuri=~s/\.meta$//;
367: $disuri=&Apache::lonhtmlcommon::crumbs($disuri);
368: # version
369: my $currentversion=&Apache::lonnet::getversion($disuri);
370: my $versiondisplay='';
371: if ($thisversion) {
372: $versiondisplay=&mt('Version').': '.$thisversion.
373: ' ('.&mt('most recent version').': '.$currentversion.')';
374: } else {
375: $versiondisplay='Version: '.$currentversion;
376: }
377: # obsolete
378: my $obsolete=$content{'obsolete'};
379: my $obsoletewarning='';
380: if (($obsolete) && ($ENV{'user.adv'})) {
381: $obsoletewarning='<p><font color="red">'.
382: &mt('This resource has been marked obsolete by the author(s)').'</font></p>';
383: }
384:
385: my %lt=&fieldnames();
386: my $table='';
387: my $bodytag=&Apache::loncommon::bodytag
388: ('Catalog Information','','','',$resdomain);
389: foreach ('title',
390: 'author',
391: 'subject',
392: 'keywords',
393: 'notes',
394: 'abstract',
395: 'mime',
396: 'language',
397: 'creationdate',
398: 'lastrevisiondate',
399: 'owner',
400: 'copyright',
401: 'customdistributionfile',
402: 'obsolete',
403: 'obsoletereplacement') {
404: $table.='<tr><td bgcolor="#AAAAAA">'.$lt{$_}.
405: '</td><td bgcolor="#CCCCCC">'.
406: &prettyprint($_,$content{$_}).'</td></tr>';
407: delete $content{$_};
408: }
409:
410: $r->print(<<ENDHEAD);
411: <html><head><title>Catalog Information</title></head>
412: $bodytag
413: <h2>$content{'title'}</h2>
414: <h3><tt>$disuri</tt></h3>
415: $obsoletewarning
416: $versiondisplay<br />
417: <table cellspacing=2 border=0>
418: $table
419: </table>
420: ENDHEAD
421: if ($ENV{'user.adv'}) {
422: # ------------------------------------------------------------ Dynamic Metadata
423: $r->print(
424: '<h3>'.&mt('Dynamic Metadata').' ('.
425: &mt('updated periodically').')</h3>'.&mt('Processing').
426: ' ...<br>');
427: $r->rflush();
428: my %items=&fieldnames();
429: my %dynmeta=&dynamicmeta($uri);
430: $r->print(
431: '</table><h4>'.&mt('Access and Usage Statistics').'</h4><table cellspacing=2 border=0>');
432: foreach ('count') {
433: $r->print(
434: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
435: $dynmeta{$_}." </td></tr>\n");
436: }
437: foreach my $cat ('usage','comefrom','goto') {
438: $r->print(
439: '<tr><td bgcolor="#AAAAAA">'.$items{$cat}.'</td><td bgcolor="#CCCCCC">'.
440: $dynmeta{$cat}.'<font size="-1"><ul>'.join("\n",
441: map { my $murl=$_;
442: '<li><a href="'.&Apache::lonnet::clutter($murl).'" target="preview">'.
443: &Apache::lonnet::gettitle($murl).' [<tt>'.$murl
444: .'</tt>]</a></li>' }
445: split(/\,/,$dynmeta{$cat.'_list'}))."</ul></font></td></tr>\n");
446: }
447: foreach my $cat ('course') {
448: $r->print(
449: '<tr><td bgcolor="#AAAAAA">'.$items{$cat}.'</td><td bgcolor="#CCCCCC">'.
450: $dynmeta{$cat}.'<font size="-1"><ul>'.join("\n",
451: map { my %courseinfo=&Apache::lonnet::coursedescription($_);
452: '<li><a href="/public/'.
453: $courseinfo{'domain'}.'/'.$courseinfo{'num'}.'/syllabus" target="preview">'.
454: $courseinfo{'description'}.'</a></li>' }
455: split(/\,/,$dynmeta{$cat.'_list'}))."</ul></font></td></tr>\n");
456: }
457: $r->print('</table>');
458: if ($uri=~/\.(problem|exam|quiz|assess|survey|form)\.meta$/) {
459: $r->print(
460: '<h4>'.&mt('Assessment Statistical Data').'</h4><table cellspacing=2 border=0>');
461: foreach ('stdno','avetries') {
462: $r->print(
463: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
464: $dynmeta{$_}." </td></tr>\n");
465: }
466: foreach ('difficulty') {
467: $r->print(
468: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
469: &diffgraph($dynmeta{$_})."</td></tr>\n");
470: }
471: $r->print('</table>');
472: }
473: $r->print('<h4>'.&mt('Evaluation Data').'</h4><table cellspacing=2 border=0>');
474: foreach ('clear','depth','helpful','correct','technical') {
475: $r->print(
476: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
477: &evalgraph($dynmeta{$_})."</td></tr>\n");
478: }
479: $r->print('</table>');
480: $disuri=~/^(\w+)\/(\w+)\//;
481: if ((($ENV{'user.domain'} eq $1) && ($ENV{'user.name'} eq $2))
482: || ($ENV{'user.role.ca./'.$1.'/'.$2})) {
483: $r->print(
484: '<h4>'.&mt('Evaluation Comments').' ('.&mt('visible to author and co-authors only').')</h4>'.
485: '<blockquote>'.$dynmeta{'comments'}.'</blockquote>');
486: $r->print(
487: '<h4>'.&mt('Error Messages').' ('.
488: &mt('visible to author and co-authors only').')</h4>');
489: my %errormsgs=&Apache::lonnet::dump('nohist_res_msgs',$1,$2);
490: foreach (keys %errormsgs) {
491: if ($_=~/^\Q$disuri\E\_\d+$/) {
492: my %content=&Apache::lonmsg::unpackagemsg($errormsgs{$_});
493: $r->print('<b>'.$content{'time'}.'</b>: '.$content{'message'}.
494: '<br />');
495: }
496: }
497: }
498: # ------------------------------------------------------------- All other stuff
499: $r->print(
500: '<h3>'.&mt('Additional Metadata (non-standard, parameters, exports)').'</h3>');
501: foreach (sort keys %content) {
502: my $name=$_;
503: unless ($name=~/\.display$/) {
504: my $display=&Apache::lonnet::metadata($uri,$name.'.display');
505: unless ($display) { $display=$name; };
506: my $otherinfo='';
507: foreach ('name','part','type','default') {
508: if (defined(&Apache::lonnet::metadata($uri,$name.'.'.$_))) {
509: $otherinfo.=' '.$_.'='.
510: &Apache::lonnet::metadata($uri,$name.'.'.$_).'; ';
511: }
512: }
513: $r->print('<b>'.$display.':</b> '.$content{$name});
514: if ($otherinfo) {
515: $r->print(' ('.$otherinfo.')');
516: }
517: $r->print("<br>\n");
518: }
519: }
520: }
521: # ===================================================== End Resource Space Call
522: } else {
523: # ===================================================== Construction Space Call
524:
525: # ----------------------------------------------------------- Set document type
526:
527: &Apache::loncommon::content_type($r,'text/html');
528: $r->send_http_header;
529:
530: return OK if $r->header_only;
531: # ---------------------------------------------------------------------- Header
532: my $bodytag=&Apache::loncommon::bodytag('Edit Catalog Information');
533: my $disuri=$uri;
534: my $fn=&Apache::lonnet::filelocation('',$uri);
535: $disuri=~s/^\/\~\w+//;
536: $disuri=~s/\.meta$//;
537: my $displayfile='Catalog Information for '.$disuri;
538: if ($disuri=~/\/default$/) {
539: my $dir=$disuri;
540: $dir=~s/default$//;
541: $displayfile=&mt('Default Cataloging Information for Directory').' '.
542: $dir;
543: }
544: %Apache::lonpublisher::metadatafields=();
545: %Apache::lonpublisher::metadatakeys=();
546: &Apache::lonpublisher::metaeval(&Apache::lonnet::getfile($fn));
547: $r->print(<<ENDEDIT);
548: <html><head><title>Edit Catalog Information</title></head>
549: $bodytag
550: <h1>$displayfile</h1>
551: <form method="post">
552: ENDEDIT
553: my %lt=&fieldnames();
554: foreach ('author','title','subject','keywords','abstract','notes',
555: 'copyright','customdistributionfile','language',
556: 'obsolete','obsoletereplacement') {
557: if ($ENV{'form.new_'.$_}) {
558: $Apache::lonpublisher::metadatafields{$_}=$ENV{'form.new_'.$_};
559: }
560: if (m/copyright/) {
561: $r->print(&Apache::lonpublisher::selectbox($lt{$_},'new_'.$_,
562: ($Apache::lonpublisher::metadatafields{$_}?
563: $Apache::lonpublisher::metadatafields{$_}:'default'),
564: \&Apache::loncommon::copyrightdescription,
565: (&Apache::loncommon::copyrightids)));
566: } elsif (m/language/) {
567: $r->print(&Apache::lonpublisher::selectbox($lt{$_},'new_'.$_,
568: $Apache::lonpublisher::metadatafields{$_},
569: \&Apache::loncommon::languagedescription,
570: (&Apache::loncommon::languageids)));
571: } else {
572: $r->print(&Apache::lonpublisher::textfield($lt{$_},'new_'.$_,
573: $Apache::lonpublisher::metadatafields{$_}));
574: }
575: }
576: if ($ENV{'form.store'}) {
577: my $mfh;
578: unless ($mfh=Apache::File->new('>'.$fn)) {
579: $r->print(
580: '<p><font color=red>'.&mt('Could not write metadata').', '.
581: &mt('FAIL').'</font>');
582: } else {
583: foreach (sort keys %Apache::lonpublisher::metadatafields) {
584: unless ($_=~/\./) {
585: my $unikey=$_;
586: $unikey=~/^([A-Za-z]+)/;
587: my $tag=$1;
588: $tag=~tr/A-Z/a-z/;
589: print $mfh "\n\<$tag";
590: foreach
591: (split(/\,/,$Apache::lonpublisher::metadatakeys{$unikey})) {
592: my $value=
593: $Apache::lonpublisher::metadatafields{$unikey.'.'.$_};
594: $value=~s/\"/\'\'/g;
595: print $mfh ' '.$_.'="'.$value.'"';
596: }
597: print $mfh '>'.
598: &HTML::Entities::encode($Apache::lonpublisher::metadatafields{$unikey})
599: .'</'.$tag.'>';
600: }
601: }
602: $r->print('<p>'.&mt('Wrote Metadata'));
603: }
604: }
605: $r->print(
606: '<br /><input type="submit" name="store" value="'.
607: &mt('Store Catalog Information').'"></form></body></html>');
608: return OK;
609: }
610: }
611:
612: # ================================================================= BEGIN Block
613: BEGIN {
614: # Get columns of MySQL metadata table
615: @columns=&Apache::lonmysql::col_order('metadata');
616: }
617: 1;
618: __END__
619:
620:
621:
622:
623:
624:
625:
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