Annotation of loncom/interface/lonsearchcat.pm, revision 1.80
1.1 www 1: # The LearningOnline Network
2: # Search Catalog
3: #
1.2 harris41 4: # 03/08/2001 Scott Harrison
1.42 harris41 5: # Scott Harrison: 03/12/2001, 03/13/2001, 03/14/2001, 03/15/2001, 03/19/2001
6: # Scott Harrison: 03/20/2001
1.1 www 7: #
1.41 harris41 8: # Functions
9: #
10: # handler(server reference) : interacts with the Apache server layer
11: # (for /adm/searchcat URLs)
12: # simpletextfield(name,value) : returns HTML formatted string for simple text
13: # field
14: # simplecheckbox(name,value) : returns HTML formatted string for simple
15: # checkbox
16: # searchphrasefield(title,name,value) : returns HTML formatted string for
17: # a search expression phrase field
18: # dateboxes(name, defaultmonth, defaultday, defaultyear) : returns HTML
19: # formatted string
20: # for a calendar date
21: # selectbox(title,name,value,%HASH=options) : returns HTML formatted string for
22: # a selection box field
1.42 harris41 23: # advancedsearch(server reference, environment reference) : perform a complex
24: # multi-field logical query
1.41 harris41 25: # filled(field) : determines whether a given field has been filled
1.42 harris41 26: # basicsearch(server reference, environment reference) : perform a simple
27: # single-field logical query
28: # output_blank_field_error(server reference) : outputs a message saying that
29: # more fields need to be filled in
30: # output_results(output mode,
31: # server reference,
32: # environment reference,
33: # reply list reference) : outputs results from search
1.43 harris41 34: # build_SQL_query(field name, logic) : builds a SQL query string from a
35: # logical expression with AND/OR keywords
36: # recursive_SQL_query_build(field name, reverse notation expression) :
37: # builds a SQL query string from a reverse notation expression
38: # logical expression with AND/OR keywords
1.41 harris41 39:
1.1 www 40: package Apache::lonsearchcat;
41:
42: use strict;
43: use Apache::Constants qw(:common);
1.6 harris41 44: use Apache::lonnet();
45: use Apache::File();
1.7 harris41 46: use CGI qw(:standard);
1.41 harris41 47: use Text::Query;
1.1 www 48:
1.3 harris41 49: my %language;
50: my $scrout;
51: my %metadatafields;
52: my %cprtag;
53: my %mimetag;
1.46 harris41 54: my $closebutton;
1.55 harris41 55: my $basicviewselect=<<END;
56: <select name='basicviewselect'>
57: <option value='Detailed Citation View'>Detailed Citation View</option>
58: <option value='Summary View'>Summary View</option>
59: <option value='Fielded Format'>Fielded Format</option>
60: <option value='XML/SGML'>XML/SGML</option>
61: </select>
62: END
63: my $advancedviewselect=<<END;
64: <select name='advancedviewselect'>
1.50 harris41 65: <option value='Detailed Citation View'>Detailed Citation View</option>
66: <option value='Summary View'>Summary View</option>
67: <option value='Fielded Format'>Fielded Format</option>
68: <option value='XML/SGML'>XML/SGML</option>
1.46 harris41 69: </select>
70: END
1.3 harris41 71:
1.1 www 72: sub handler {
73: my $r = shift;
1.7 harris41 74:
75: # -------------------------------------- see if called from an interactive mode
76: map {
77: my ($name, $value) = split(/=/,$_);
78: $value =~ tr/+/ /;
79: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
80: if ($name eq 'catalogmode') {
81: $ENV{'form.'.$name}=$value;
82: }
83: } (split(/&/,$ENV{'QUERY_STRING'}));
84:
1.1 www 85: $r->content_type('text/html');
86: $r->send_http_header;
87: return OK if $r->header_only;
88:
1.3 harris41 89: %metadatafields=();
90:
1.8 harris41 91: my $hidden='';
92: $hidden=<<END if $ENV{'form.catalogmode'} eq 'interactive';
93: <input type='hidden' name='catalogmode' value='interactive'>
94: END
95:
1.47 harris41 96: $closebutton=<<END if $ENV{'form.catalogmode'} eq 'interactive';
1.68 harris41 97: <input type="button" name="close" value='CLOSE' onClick="self.close()">
1.46 harris41 98: END
99:
1.3 harris41 100: # ------------------------------------------------ First, check out environment
101: $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'};
102:
1.8 harris41 103: # --------------------------------- Compute various listings of metadata values
1.3 harris41 104:
105: %language=();
106: $language{'any'}='Any language';
107: {
108: my $fh=Apache::File->new($r->dir_config('lonTabDir').'/language.tab');
109: map {
1.57 harris41 110: $_=~/(\w+)\s+([\w\s\-]+)/; chomp;
1.3 harris41 111: $language{$1}=$2;
112: } <$fh>;
113: }
114:
115: %cprtag=();
116: $cprtag{'any'}='Any copyright/distribution';
117: {
118: my $fh=Apache::File->new($r->dir_config('lonIncludes').'/copyright.tab');
119: map {
1.57 harris41 120: $_=~/(\w+)\s+([\w\s\-]+)/; chomp;
1.3 harris41 121: $cprtag{$1}=$2;
122: } <$fh>;
123: }
124:
125: %mimetag=();
126: $mimetag{'any'}='Any type';
127: {
128: my $fh=Apache::File->new($r->dir_config('lonTabDir').'/filetypes.tab');
129: map {
1.57 harris41 130: $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/; chomp;
1.3 harris41 131: $mimetag{$1}=".$1 $3";
132: } <$fh>;
133: }
134:
1.6 harris41 135: if ($ENV{'form.basicsubmit'} eq 'SEARCH') {
1.19 harris41 136: return &basicsearch($r,\%ENV);
1.6 harris41 137: }
1.18 harris41 138: elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {
139: return &advancedsearch($r,\%ENV);
140: }
1.6 harris41 141:
1.8 harris41 142: $scrout=''; # building a part of screen output
1.3 harris41 143: $scrout.=&searchphrasefield('Limit by title','title',
1.11 harris41 144: $ENV{'form.title'});
1.3 harris41 145:
146: $scrout.=&searchphrasefield('Limit by author','author',
1.11 harris41 147: $ENV{'form.author'});
1.3 harris41 148:
149: $scrout.=&searchphrasefield('Limit by subject','subject',
1.11 harris41 150: $ENV{'form.subject'});
151:
152: $scrout.=&searchphrasefield('Limit by keywords','keywords',
153: $ENV{'form.keywords'});
154:
155: $scrout.=&searchphrasefield('Limit by URL','url',
156: $ENV{'form.url'});
157:
158: $scrout.=&searchphrasefield('Limit by version','version',
159: $ENV{'form.version'});
1.3 harris41 160:
161: $scrout.=&searchphrasefield('Limit by notes','notes',
1.11 harris41 162: $ENV{'form.notes'});
1.3 harris41 163:
164: $scrout.=&searchphrasefield('Limit by abstract','abstract',
1.11 harris41 165: $ENV{'form.abstract'});
1.3 harris41 166:
1.11 harris41 167: $ENV{'form.mime'}='notxxx' unless length($ENV{'form.mime'});
1.3 harris41 168: $scrout.=&selectbox('Limit by MIME type','mime',
1.11 harris41 169: $ENV{'form.mime'},%mimetag);
170:
171: $ENV{'form.language'}='any' unless length($ENV{'form.language'});
1.3 harris41 172:
173: $scrout.=&selectbox('Limit by language','language',
1.11 harris41 174: $ENV{'form.language'},%language);
1.3 harris41 175:
1.8 harris41 176:
177: # ------------------------------------------------ Compute date selection boxes
178: $scrout.=<<CREATIONDATESTART;
1.3 harris41 179: <p>
180: <font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
181: </font>
182: <br>
1.8 harris41 183: between:
184: CREATIONDATESTART
1.11 harris41 185: $scrout.=&dateboxes('creationdatestart',1,1,1976,
186: $ENV{'form.creationdatestart_month'},
187: $ENV{'form.creationdatestart_day'},
188: $ENV{'form.creationdatestart_year'},
189: );
1.8 harris41 190: $scrout.=<<CREATIONDATEEND;
191: and:
192: CREATIONDATEEND
1.11 harris41 193: $scrout.=&dateboxes('creationdateend',12,31,2051,
194: $ENV{'form.creationdateend_month'},
195: $ENV{'form.creationdateend_day'},
196: $ENV{'form.creationdateend_year'},
197: );
1.8 harris41 198: $scrout.="</p>";
199:
200: $scrout.=<<LASTREVISIONDATESTART;
201: <p>
202: <font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
203: </b></font>
204: <br>between:
205: LASTREVISIONDATESTART
1.11 harris41 206: $scrout.=&dateboxes('lastrevisiondatestart',1,1,1976,
207: $ENV{'form.lastrevisiondatestart_month'},
208: $ENV{'form.lastrevisiondatestart_day'},
209: $ENV{'form.lastrevisiondatestart_year'},
210: );
1.8 harris41 211: $scrout.=<<LASTREVISIONDATEEND;
212: and:
213: LASTREVISIONDATEEND
1.11 harris41 214: $scrout.=&dateboxes('lastrevisiondateend',12,31,2051,
215: $ENV{'form.lastrevisiondateend_month'},
216: $ENV{'form.lastrevisiondateend_day'},
217: $ENV{'form.lastrevisiondateend_year'},
218: );
1.8 harris41 219: $scrout.='</p>';
220:
221: $scrout.=&searchphrasefield('Limit by publisher/owner','owner',
1.11 harris41 222: $ENV{'form.owner'});
223: # $metadatafields{'owner'});
1.8 harris41 224:
1.11 harris41 225: $ENV{'form.copyright'}='any' unless length($ENV{'form.copyright'});
1.8 harris41 226: $scrout.=&selectbox('Limit by copyright/distribution','copyright',
1.11 harris41 227: $ENV{'form.copyright'},%cprtag);
1.8 harris41 228:
1.14 harris41 229: # ------------------------------------------- Compute customized metadata field
230: $scrout.=<<CUSTOMMETADATA;
231: <p>
1.77 harris41 232: <font color="#800000" face="helvetica"><b>LIMIT BY SPECIAL METADATA FIELDS:</b>
1.14 harris41 233: </font>
1.77 harris41 234: For resource-specific metadata, enter in an expression in the form of
1.14 harris41 235: <i>key</i>=<i>value</i> separated by operators such as AND or OR.<br>
236: <b>Example:</b> grandmother=75 OR grandfather=85
237: <br>
238: CUSTOMMETADATA
239: $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
1.15 harris41 240: $scrout.=' <i>initial users of this system do not need to worry about this option</i>';
1.14 harris41 241:
1.77 harris41 242: $scrout.=<<CUSTOMSHOW;
243: <p>
244: <font color="#800000" face="helvetica"><b>SHOW SPECIAL METADATA FIELDS:</b>
245: </font>
246: Enter in a space-separated list of special metadata fields to show
247: in a fielded listing for each record result.
248: <br>
249: CUSTOMSHOW
250: $scrout.=&simpletextfield('customshow',$ENV{'form.customshow'});
251: $scrout.=' <i>initial users of this system do not need to worry about this option</i>';
252:
1.8 harris41 253: # ---------------------------------------------------------------- Print screen
254: $r->print(<<ENDDOCUMENT);
255: <html>
256: <head>
257: <title>The LearningOnline Network with CAPA</title>
258: </head>
259: <body bgcolor="#FFFFFF">
260: <img align=right src=/adm/lonIcons/lonlogos.gif>
261: <h1>Search Catalog</h1>
262: <form method="post" action="/adm/searchcat">
263: $hidden
264: <hr>
265: <h3>Basic Search</h3>
266: <p>
267: Enter terms or phrases separated by search operators
268: such as AND or OR then press SEARCH below. Terms should be specific
269: to the title, author, subject, notes, or abstract information associated
270: with a resource.
271: <br>
1.11 harris41 272: ENDDOCUMENT
273: $r->print(&simpletextfield('basicexp',$ENV{'form.basicexp'}));
274: $r->print(' ');
275: $r->print(&simplecheckbox('titleonly',$ENV{'form.titleonly'}));
276: $r->print('<font color="#800000">Title only</font> ');
277: $r->print(&simplecheckbox('allversions',$ENV{'form.allversions'}));
278: $r->print(<<ENDDOCUMENT);
279: <font color="#800000">Search historic archives</font>
1.8 harris41 280: <br>
1.68 harris41 281: <input type="submit" name="basicsubmit" value='SEARCH' />
282: <input type="reset" name="reset" value='RESET' />
1.46 harris41 283: $closebutton
1.55 harris41 284: $basicviewselect
1.8 harris41 285: </p>
286: <hr>
287: <h3>Advanced Search</h3>
288: $scrout
289: <p>
1.68 harris41 290: <input type="submit" name="advancedsubmit" value='SEARCH' />
291: <input type="reset" name="reset" value='RESET' />
1.46 harris41 292: $closebutton
1.55 harris41 293: $advancedviewselect
1.3 harris41 294: </p>
1.8 harris41 295: </form>
296: </body>
297: </html>
298: ENDDOCUMENT
299: return OK;
300: }
301:
302: # --------------------------------------------------------- Various form fields
303:
1.11 harris41 304: sub simpletextfield {
305: my ($name,$value)=@_;
1.68 harris41 306: return '<input type=text name=\''.$name.
307: '\' size=20 value=\''.$value.'\' />';
1.11 harris41 308: }
309:
310: sub simplecheckbox {
311: my ($name,$value)=@_;
312: my $checked='';
313: $checked="CHECKED" if $value eq 'on';
1.68 harris41 314: return '<input type=checkbox name=\''.$name.'\' '. $checked . '>';
1.11 harris41 315: }
316:
1.8 harris41 317: sub searchphrasefield {
318: my ($title,$name,$value)=@_;
319: my $instruction=<<END;
320: Enter terms or phrases separated by search operators such
321: as AND or OR.
322: END
323: my $uctitle=uc($title);
324: return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".
325: "</FONT> $instruction<br>".
1.68 harris41 326: '<input type=text name="'.$name.'" size=80 value=\''.$value.'\'>';
1.8 harris41 327: }
1.3 harris41 328:
1.8 harris41 329: sub dateboxes {
1.11 harris41 330: my ($name,$defaultmonth,$defaultday,$defaultyear,
331: $currentmonth,$currentday,$currentyear)=@_;
332: ($defaultmonth,$defaultday,$defaultyear)=('','','');
333: my $month=<<END;
1.8 harris41 334: <select name="${name}_month">
1.11 harris41 335: <option value='$defaultmonth'> </option>
336: <option value="1">January</option>
337: <option value="2">February</option>
338: <option value="3">March</option>
339: <option value="4">April</option>
340: <option value="5">May</option>
341: <option value="6">June</option>
342: <option value="7">July</option>
343: <option value="8">August</option>
344: <option value="9">September</option>
1.3 harris41 345: <option value="10">October</option>
346: <option value="11">November</option>
347: <option value="12">December</option>
348: </select>
1.11 harris41 349: END
350: $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);
351: my $day=<<END;
1.8 harris41 352: <select name="${name}_day">
1.11 harris41 353: <option value='$defaultday'> </option>
354: <option value="1">1</option>
355: <option value="2">2</option>
356: <option value="3">3</option>
357: <option value="4">4</option>
358: <option value="5">5</option>
359: <option value="6">6</option>
360: <option value="7">7</option>
361: <option value="8">8</option>
362: <option value="9">9</option>
363: <option value="10">10</option>
364: <option value="11">11</option>
365: <option value="12">12</option>
366: <option value="13">13</option>
367: <option value="14">14</option>
368: <option value="15">15</option>
369: <option value="16">16</option>
370: <option value="17">17</option>
371: <option value="18">18</option>
372: <option value="19">19</option>
373: <option value="20">20</option>
374: <option value="21">21</option>
375: <option value="22">22</option>
376: <option value="23">23</option>
377: <option value="24">24</option>
378: <option value="25">25</option>
379: <option value="26">26</option>
380: <option value="27">27</option>
381: <option value="28">28</option>
382: <option value="29">29</option>
383: <option value="30">30</option>
384: <option value="31">31</option>
1.3 harris41 385: </select>
1.11 harris41 386: END
387: $day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday);
388: my $year=<<END;
1.8 harris41 389: <select name="${name}_year">
1.11 harris41 390: <option value='$defaultyear'> </option>
391: <option value="1976">1976</option>
392: <option value="1977">1977</option>
393: <option value="1978">1978</option>
394: <option value="1979">1979</option>
395: <option value="1980">1980</option>
396: <option value="1981">1981</option>
397: <option value="1982">1982</option>
398: <option value="1983">1983</option>
399: <option value="1984">1984</option>
400: <option value="1985">1985</option>
401: <option value="1986">1986</option>
402: <option value="1987">1987</option>
403: <option value="1988">1988</option>
404: <option value="1989">1989</option>
405: <option value="1990">1990</option>
406: <option value="1991">1991</option>
407: <option value="1992">1992</option>
408: <option value="1993">1993</option>
409: <option value="1994">1994</option>
410: <option value="1995">1995</option>
411: <option value="1996">1996</option>
412: <option value="1997">1997</option>
413: <option value="1998">1998</option>
414: <option value="1999">1999</option>
415: <option value="2000">2000</option>
416: <option value="2001">2001</option>
417: <option value="2002">2002</option>
418: <option value="2003">2003</option>
419: <option value="2004">2004</option>
420: <option value="2005">2005</option>
421: <option value="2006">2006</option>
422: <option value="2007">2007</option>
423: <option value="2008">2008</option>
424: <option value="2009">2009</option>
425: <option value="2010">2010</option>
426: <option value="2011">2011</option>
427: <option value="2012">2012</option>
428: <option value="2013">2013</option>
429: <option value="2014">2014</option>
430: <option value="2015">2015</option>
431: <option value="2016">2016</option>
432: <option value="2017">2017</option>
433: <option value="2018">2018</option>
434: <option value="2019">2019</option>
435: <option value="2020">2020</option>
436: <option value="2021">2021</option>
437: <option value="2022">2022</option>
438: <option value="2023">2023</option>
439: <option value="2024">2024</option>
440: <option value="2025">2025</option>
441: <option value="2026">2026</option>
442: <option value="2027">2027</option>
443: <option value="2028">2028</option>
444: <option value="2029">2029</option>
445: <option value="2030">2030</option>
446: <option value="2031">2031</option>
447: <option value="2032">2032</option>
448: <option value="2033">2033</option>
449: <option value="2034">2034</option>
450: <option value="2035">2035</option>
451: <option value="2036">2036</option>
452: <option value="2037">2037</option>
453: <option value="2038">2038</option>
454: <option value="2039">2039</option>
455: <option value="2040">2040</option>
456: <option value="2041">2041</option>
457: <option value="2042">2042</option>
458: <option value="2043">2043</option>
459: <option value="2044">2044</option>
460: <option value="2045">2045</option>
461: <option value="2046">2046</option>
462: <option value="2047">2047</option>
463: <option value="2048">2048</option>
464: <option value="2049">2049</option>
465: <option value="2050">2050</option>
466: <option value="2051">2051</option>
1.3 harris41 467: </select>
468: END
1.11 harris41 469: $year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear);
470: return "$month$day$year";
1.3 harris41 471: }
472:
473: sub selectbox {
474: my ($title,$name,$value,%options)=@_;
475: my $uctitle=uc($title);
476: my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
477: "</b></font><br>".'<select name="'.$name.'">';
478: map {
1.68 harris41 479: $selout.='<option value=\''.$_.'\'';
1.3 harris41 480: if ($_ eq $value) { $selout.=' selected'; }
481: $selout.='>'.$options{$_}.'</option>';
482: } sort keys %options;
483: return $selout.'</select>';
1.6 harris41 484: }
485:
1.45 harris41 486: # ----------------------------------------------- Performing an advanced search
1.18 harris41 487: sub advancedsearch {
488: my ($r,$envhash)=@_;
489: my %ENV=%{$envhash};
490:
1.32 harris41 491: my $fillflag=0;
1.64 harris41 492: # Clean up fields for safety
493: for my $field ('title','author','subject','keywords','url','version',
494: 'creationdatestart_month','creationdatestart_day',
495: 'creationdatestart_year','creationdateend_month',
496: 'creationdateend_day','creationdateend_year',
497: 'lastrevisiondatestart_month','lastrevisiondatestart_day',
498: 'lastrevisiondatestart_year','lastrevisiondateend_month',
499: 'lastrevisiondateend_day','lastrevisiondateend_year',
500: 'notes','abstract','mime','language','owner',
1.77 harris41 501: 'custommetadata','customshow') {
1.68 harris41 502: $ENV{"form.$field"}=~s/[^\w\s\(\)\=\-\"\']//g;
1.64 harris41 503: }
1.32 harris41 504: for my $field ('title','author','subject','keywords','url','version',
505: 'notes','abstract','mime','language','owner',
506: 'custommetadata') {
1.40 harris41 507: if (&filled($ENV{"form.$field"})) {
1.32 harris41 508: $fillflag++;
509: }
510: }
511:
512: unless ($fillflag) {
513: &output_blank_field_error($r);
514: return OK;
515: }
1.39 harris41 516:
517: my $query='';
1.44 harris41 518:
1.45 harris41 519: my @queries;
1.44 harris41 520: # Go through logical expression AND/OR/NOT phrase fields.
1.58 harris41 521:
522: foreach my $field ('title','author','subject','notes','abstract','url',
523: 'keywords','version','owner') {
1.44 harris41 524: if ($ENV{'form.'.$field}) {
1.45 harris41 525: push @queries,&build_SQL_query($field,$ENV{'form.'.$field});
1.44 harris41 526: }
527: }
1.58 harris41 528: if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
1.59 harris41 529: push @queries,"(language like \"\%$ENV{'form.language'}\%\")";
1.58 harris41 530: }
531: if ($ENV{'form.mime'} and $ENV{'form.mime'} ne 'any') {
1.59 harris41 532: push @queries,"(mime like \"\%$ENV{'form.mime'}\%\")";
1.58 harris41 533: }
534: if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
1.59 harris41 535: push @queries,"(copyright like \"\%$ENV{'form.copyright'}\%\")";
1.58 harris41 536: }
1.60 harris41 537: my $datequery=&build_date_queries(
538: $ENV{'form.creationdatestart_month'},
539: $ENV{'form.creationdatestart_day'},
540: $ENV{'form.creationdatestart_year'},
541: $ENV{'form.creationdateend_month'},
542: $ENV{'form.creationdateend_day'},
543: $ENV{'form.creationdateend_year'},
544: $ENV{'form.lastrevisiondatestart_month'},
545: $ENV{'form.lastrevisiondatestart_day'},
546: $ENV{'form.lastrevisiondatestart_year'},
547: $ENV{'form.lastrevisiondateend_month'},
548: $ENV{'form.lastrevisiondateend_day'},
549: $ENV{'form.lastrevisiondateend_year'},
550: );
1.61 harris41 551: if ($datequery=~/^Incorrect/) {
552: &output_date_error($r,$datequery);
553: return OK;
554: }
555: elsif ($datequery) {
1.60 harris41 556: push @queries,$datequery;
557: }
1.76 harris41 558: my $customquery='';
1.64 harris41 559: if ($ENV{'form.custommetadata'}) {
560: $customquery=&build_custommetadata_query('custommetadata',
561: $ENV{'form.custommetadata'});
562: }
1.45 harris41 563: if (@queries) {
1.58 harris41 564: $query=join(" AND ",@queries);
1.46 harris41 565: $query="select * from metadata where $query";
1.76 harris41 566: my $reply='';
567: unless ($customquery) {
568: $reply=&Apache::lonnet::metadata_query($query);
569: }
570: else {
571: $reply=&Apache::lonnet::metadata_query($query,$customquery);
572: }
1.64 harris41 573: &output_results('Advanced',$r,$envhash,$customquery,$reply);
1.45 harris41 574: }
575: else {
576: &output_results('Advanced',$r,$envhash,$query);
577: }
1.24 harris41 578: return OK;
1.18 harris41 579: }
580:
1.26 harris41 581: # ---------------------------------------------------- see if a field is filled
582: sub filled {
1.31 harris41 583: my ($field)=@_;
584: if ($field=~/\S/) {
1.28 harris41 585: return 1;
586: }
587: else {
588: return 0;
589: }
1.26 harris41 590: }
591:
1.6 harris41 592: # --------------------------------------------------- Performing a basic search
593: sub basicsearch {
1.19 harris41 594: my ($r,$envhash)=@_;
595: my %ENV=%{$envhash};
1.6 harris41 596:
1.64 harris41 597: # Clean up fields for safety
598: for my $field ('basicexp') {
599: $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;
600: }
601:
1.26 harris41 602: unless (&filled($ENV{'form.basicexp'})) {
1.24 harris41 603: &output_blank_field_error($r);
604: return OK;
605: }
1.22 harris41 606:
1.39 harris41 607: my $query='';
1.33 harris41 608: my $concatarg=join('," ",',
609: ('title', 'author', 'subject', 'notes', 'abstract'));
610:
611: $query="select * from metadata where concat($concatarg) like '\%$ENV{'form.basicexp'}\%'";
1.13 harris41 612: my $reply=&Apache::lonnet::metadata_query($query);
1.44 harris41 613: &output_results('Basic',$r,$envhash,$query,$reply);
1.18 harris41 614: return OK;
1.22 harris41 615: }
616:
1.44 harris41 617: # ---------------- Message to output when there are not enough fields filled in
1.22 harris41 618: sub output_blank_field_error {
619: my ($r)=@_;
620: # make query information persistent to allow for subsequent revision
1.65 harris41 621: my $persistent=&make_persistent();
1.22 harris41 622:
623: $r->print(<<BEGINNING);
624: <html>
625: <head>
626: <title>The LearningOnline Network with CAPA</title>
627: BEGINNING
628: $r->print(<<RESULTS);
629: </head>
630: <body bgcolor="#ffffff">
631: <img align=right src=/adm/lonIcons/lonlogos.gif>
632: <h1>Search Catalog</h1>
633: <form method="post" action="/adm/searchcat">
634: $persistent
635: <input type='button' value='Revise search request'
636: onClick='this.form.submit();'>
1.46 harris41 637: $closebutton
1.22 harris41 638: <hr>
639: <h3>Helpful Message</h3>
640: <p>
641: Incorrect search query due to blank entry fields.
642: You need to fill in the relevant
643: fields on the search page in order for a query to be
644: processed.
645: </p>
646: </body>
647: </html>
648: RESULTS
1.18 harris41 649: }
1.6 harris41 650:
1.18 harris41 651: # ----------------------------- format and output results based on a reply list
652: sub output_results {
1.44 harris41 653: my ($mode,$r,$envhash,$query,@replylist)=@_;
1.19 harris41 654: my %ENV=%{$envhash};
1.44 harris41 655: my $compiledresult='';
656:
1.18 harris41 657: foreach my $reply (@replylist) {
658:
659: my @results;
660:
661: my $replyfile='';
662: $reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting
663: $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;
664: $reply=~/(.*?)\_/;
665: my $hostname=$1;
1.52 harris41 666: sleep 3; # temporary fix, need to check for completion and status
1.18 harris41 667: {
668: while (1) {
669: last if -e $replyfile;
670: sleep 1;
671: }
672: # QUESTION: how should I handle this error condition..
673: # I'm sure there is syntax elsewhere I can use..
674: my $fh=Apache::File->new($replyfile) or
675: ($r->print('file cannot be opened') and return OK);
676: @results=<$fh>;
1.6 harris41 677: }
678:
1.77 harris41 679: my $customshow='';
680: my $extrashow='';
681: if ($ENV{'form.customshow'}) {
682: $customshow=$ENV{'form.customshow'};
683: $customshow=~s/[^\w\s]//g;
684: my @fields=map {"<font color=\"#008000\">$_:</font>"}
685: split(/\s+/,$customshow);
686: $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
687: }
1.79 harris41 688: my $customdata='';
689: foreach my $result (@results) {
690: $result=~/(\&custom.*)$/; # grab all custom metadata
1.80 ! harris41 691: $customdata=$1;
1.79 harris41 692: $result=~s/\&custom.*$//; # remove custom metadata
693: }
1.18 harris41 694: foreach my $result (@results) {
1.50 harris41 695: my @fields=map
696: {&Apache::lonnet::unescape($_)}
697: (split(/\,/,$result));
1.18 harris41 698: my ($title,$author,$subject,$url,$keywords,$version,
699: $notes,$abstract,$mime,$lang,
1.50 harris41 700: $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;
1.18 harris41 701: my $shortabstract=$abstract;
702: $shortabstract=substr($abstract,0,200) if length($abstract)>200;
1.51 harris41 703: $fields[7]=$shortabstract;
1.18 harris41 704: $compiledresult.=<<END;
1.56 harris41 705: <p>
1.8 harris41 706: END
1.18 harris41 707: $compiledresult.=<<END if $ENV{'form.catalogmode'} eq 'interactive';
1.8 harris41 708: <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
1.10 harris41 709: onClick="javascript:select_data('$title','$url')">
1.8 harris41 710: </font>
711: <br>
712: END
1.51 harris41 713: my $httphost=$ENV{'HTTP_HOST'};
1.53 harris41 714:
1.55 harris41 715: my $viewselect;
716: if ($mode eq 'Basic') {
717: $viewselect=$ENV{'form.basicviewselect'};
718: }
719: elsif ($mode eq 'Advanced') {
720: $viewselect=$ENV{'form.advancedviewselect'};
721: }
722:
723: if ($viewselect eq 'Detailed Citation View') {
1.51 harris41 724: $compiledresult.=&detailed_citation_view(@fields,
1.77 harris41 725: $hostname,$httphost,
726: $extrashow);
1.50 harris41 727: }
1.55 harris41 728: elsif ($viewselect eq 'Summary View') {
1.77 harris41 729: $compiledresult.=&summary_view(@fields,$hostname,$httphost,
730: $extrashow);
1.50 harris41 731: }
1.55 harris41 732: elsif ($viewselect eq 'Fielded Format') {
1.51 harris41 733: $compiledresult.=&fielded_format_view(@fields,$hostname,
1.77 harris41 734: $httphost,$extrashow);
1.50 harris41 735: }
1.55 harris41 736: elsif ($viewselect eq 'XML/SGML') {
1.77 harris41 737: $compiledresult.=&xml_sgml_view(@fields,$hostname,$httphost,
738: $extrashow);
1.50 harris41 739: }
740:
1.18 harris41 741: }
1.6 harris41 742:
1.18 harris41 743: unless ($compiledresult) {
744: $compiledresult="There were no results that matched your query";
745: }
1.6 harris41 746:
1.18 harris41 747: # make query information persistent to allow for subsequent revision
1.65 harris41 748: my $persistent=&make_persistent();
1.9 harris41 749:
1.18 harris41 750: $r->print(<<BEGINNING);
1.6 harris41 751: <html>
752: <head>
753: <title>The LearningOnline Network with CAPA</title>
1.8 harris41 754: BEGINNING
1.18 harris41 755: $r->print(<<SCRIPT) if $ENV{'form.catalogmode'} eq 'interactive';
1.8 harris41 756: <script>
757: function select_data(title,url) {
758: changeTitle(title);
759: changeURL(url);
760: }
761: function changeTitle(val) {
762: if (opener.inf.document.forms.resinfo.elements.t) {
763: opener.inf.document.forms.resinfo.elements.t.value=val;
764: }
765: }
766: function changeURL(val) {
767: if (opener.inf.document.forms.resinfo.elements.u) {
768: opener.inf.document.forms.resinfo.elements.u.value=val;
769: }
770: }
771: </script>
772: SCRIPT
1.18 harris41 773: $r->print(<<RESULTS);
1.6 harris41 774: </head>
775: <body bgcolor="#ffffff">
776: <img align=right src=/adm/lonIcons/lonlogos.gif>
777: <h1>Search Catalog</h1>
778: <form method="post" action="/adm/searchcat">
1.80 ! harris41 779: $customdata
1.9 harris41 780: <input type='button' value='Revise search request'
781: onClick='this.form.submit();'>
1.46 harris41 782: $closebutton
1.9 harris41 783: $persistent
1.6 harris41 784: <hr>
785: <h3>Search Query</h3>
1.43 harris41 786: RESULTS
787: if ($mode eq 'Basic') {
788: $r->print(<<RESULTS);
1.6 harris41 789: <p>
1.19 harris41 790: <b>Basic search:</b> $ENV{'form.basicexp'}
1.6 harris41 791: </p>
1.43 harris41 792: RESULTS
1.44 harris41 793: }
1.43 harris41 794: elsif ($mode eq 'Advanced') {
795: $r->print(<<RESULTS);
796: <p>
797: <b>Advanced search</b>
1.44 harris41 798: $query
1.43 harris41 799: </p>
800: RESULTS
801: }
1.44 harris41 802: $r->print(<<RESULTS);
1.6 harris41 803: <h3>Search Results</h3>
804: $compiledresult
805: </body>
806: </html>
807: RESULTS
1.18 harris41 808: }
1.41 harris41 809: }
810:
811: # ------------------------------------------------------------- build_SQL_query
812: sub build_SQL_query {
1.43 harris41 813: my ($field_name,$logic_statement)=@_;
814: my $q=new Text::Query('abc',
815: -parse => 'Text::Query::ParseAdvanced',
816: -build => 'Text::Query::Build');
1.44 harris41 817: $q->prepare($logic_statement);
1.43 harris41 818: my $matchexp=${$q}{'matchexp'}; chomp $matchexp;
819: my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);
1.44 harris41 820: return $sql_query;
1.43 harris41 821: }
1.41 harris41 822:
1.64 harris41 823: # ------------------------------------------------- build custom metadata query
824: sub build_custommetadata_query {
825: my ($field_name,$logic_statement)=@_;
826: my $q=new Text::Query('abc',
827: -parse => 'Text::Query::ParseAdvanced',
828: -build => 'Text::Query::BuildAdvancedString');
829: $q->prepare($logic_statement);
830: my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
1.69 harris41 831: # quick fix to change literal into xml tag-matching
1.75 harris41 832: # will eventually have to write a separate builder module
1.72 harris41 833: my $oldmatchexp=$matchexp;
1.75 harris41 834: $matchexp=~s/(\w+)\\\=(\w+)/\\\<$1\\\>\[\^\\\<\]\*$2\[\^\\\<\]\*\\\<\\\/$1\\\>/g;
1.76 harris41 835: return $matchexp;
1.64 harris41 836: }
837:
1.43 harris41 838: # - Recursively parse a reverse notation expression into a SQL query expression
839: sub recursive_SQL_query_build {
840: my ($dkey,$pattern)=@_;
841: my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
842: return $pattern unless @matches;
843: foreach my $match (@matches) {
844: $match=~/\[ (\w+)\s(.*) \]/;
1.44 harris41 845: my ($key,$value)=($1,$2);
1.43 harris41 846: my $replacement='';
847: if ($key eq 'literal') {
848: $replacement="($dkey like \"\%$value\%\")";
849: }
850: elsif ($key eq 'and') {
851: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
852: $replacement="($1 AND $2)";
853: }
854: elsif ($key eq 'or') {
855: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
856: $replacement="($1 OR $2)";
857: }
858: substr($pattern,
859: index($pattern,$match),
860: length($match),
861: $replacement
862: );
863: }
864: &recursive_SQL_query_build($dkey,$pattern);
1.50 harris41 865: }
866:
867: # ------------------------------------------------------ Detailed Citation View
868: sub detailed_citation_view {
869: my ($title,$author,$subject,$url,$keywords,$version,
1.51 harris41 870: $notes,$shortabstract,$mime,$lang,
871: $creationdate,$lastrevisiondate,$owner,$copyright,
1.77 harris41 872: $hostname,$httphost,$extrashow)=@_;
1.50 harris41 873: my $result=<<END;
1.56 harris41 874: <i>$owner</i>, last revised $lastrevisiondate
875: <h3><A HREF="http://$httphost$url" TARGET='search_preview'>$title</A></h3>
876: <h3>$author</h3>
877: </p>
878: <p>
1.50 harris41 879: <b>Subject:</b> $subject<br>
880: <b>Keyword(s):</b> $keywords<br>
881: <b>Notes:</b> $notes<br>
882: <b>MIME Type:</b> $mimetag{$mime}<br>
883: <b>Language:</b> $language{$lang}<br>
1.56 harris41 884: <b>Copyright/Distribution:</b> $cprtag{$copyright}<br>
1.78 harris41 885: </p>
1.77 harris41 886: $extrashow
1.78 harris41 887: <p>
1.56 harris41 888: $shortabstract
1.50 harris41 889: </p>
890: END
891: return $result;
892: }
893:
894: # ---------------------------------------------------------------- Summary View
895: sub summary_view {
896: my ($title,$author,$subject,$url,$keywords,$version,
1.51 harris41 897: $notes,$shortabstract,$mime,$lang,
898: $creationdate,$lastrevisiondate,$owner,$copyright,
1.77 harris41 899: $hostname,$httphost,$extrashow)=@_;
1.50 harris41 900: my $result=<<END;
1.56 harris41 901: <a href="http://$httphost$url" TARGET='search_preview'>$author</a><br />
902: $title<br />
903: $owner -- $lastrevisiondate<br />
904: $cprtag{$copyright}<br />
1.77 harris41 905: $extrashow
1.50 harris41 906: </p>
907: END
908: return $result;
909: }
910:
911: # -------------------------------------------------------------- Fielded Format
912: sub fielded_format_view {
913: my ($title,$author,$subject,$url,$keywords,$version,
1.51 harris41 914: $notes,$shortabstract,$mime,$lang,
915: $creationdate,$lastrevisiondate,$owner,$copyright,
1.77 harris41 916: $hostname,$httphost,$extrashow)=@_;
1.50 harris41 917: my $result=<<END;
1.51 harris41 918: <b>URL: </b> <A HREF="http://$httphost$url" TARGET='search_preview'>$url</A>
1.56 harris41 919: <br />
920: <b>Title:</b> $title<br />
921: <b>Author(s):</b> $author<br />
922: <b>Subject:</b> $subject<br />
923: <b>Keyword(s):</b> $keywords<br />
924: <b>Notes:</b> $notes<br />
925: <b>MIME Type:</b> $mimetag{$mime}<br />
926: <b>Language:</b> $language{$lang}<br />
927: <b>Creation Date:</b> $creationdate<br />
928: <b>Last Revision Date:</b> $lastrevisiondate<br />
929: <b>Publisher/Owner:</b> $owner<br />
930: <b>Copyright/Distribution:</b> $cprtag{$copyright}<br />
931: <b>Repository Location:</b> $hostname<br />
932: <b>Abstract:</b> $shortabstract<br />
1.77 harris41 933: $extrashow
1.50 harris41 934: </p>
935: END
936: return $result;
937: }
938:
939: # -------------------------------------------------------------------- XML/SGML
940: sub xml_sgml_view {
941: my ($title,$author,$subject,$url,$keywords,$version,
1.51 harris41 942: $notes,$shortabstract,$mime,$lang,
943: $creationdate,$lastrevisiondate,$owner,$copyright,
1.77 harris41 944: $hostname,$httphost,$extrashow)=@_;
1.50 harris41 945: my $result=<<END;
1.56 harris41 946: <pre>
947: <LonCapaResource>
1.57 harris41 948: <url>$url</url>
1.56 harris41 949: <title>$title</title>
950: <author>$author</author>
951: <subject>$subject</subject>
952: <keywords>$keywords</keywords>
953: <notes>$notes</notes>
954: <mimeInfo>
955: <mime>$mime</mime>
956: <mimetag>$mimetag{$mime}</mimetag>
957: </mimeInfo>
958: <languageInfo>
959: <language>$lang</language>
960: <languagetag>$language{$lang}</languagetag>
961: </languageInfo>
962: <creationdate>$creationdate</creationdate>
963: <lastrevisiondate>$lastrevisiondate</lastrevisiondate>
964: <owner>$owner</owner>
965: <copyrightInfo>
966: <copyright>$copyright</copyright>
967: <copyrighttag>$cprtag{$copyright}</copyrighttag>
968: </copyrightInfo>
969: <repositoryLocation>$hostname</repositoryLocation>
970: <shortabstract>$shortabstract</shortabstract>
1.57 harris41 971: </LonCapaResource>
1.56 harris41 972: </pre>
1.77 harris41 973: $extrashow
1.50 harris41 974: END
975: return $result;
1.60 harris41 976: }
977:
978: sub build_date_queries {
979: my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,
980: $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;
1.61 harris41 981: my @queries;
982: if ($cmonth1 or $cday1 or $cyear1 or $cmonth2 or $cday2 or $cyear2) {
983: unless ($cmonth1 and $cday1 and $cyear1 and
984: $cmonth2 and $cday2 and $cyear2) {
985: return "Incorrect entry for the creation date. You must specify ".
986: "a starting month, day, and year and an ending month, ".
987: "day, and year.";
988: }
1.63 harris41 989: my $cnumeric1=sprintf("%d%2d%2d",$cyear1,$cmonth1,$cday1);
1.61 harris41 990: $cnumeric1+=0;
1.63 harris41 991: my $cnumeric2=sprintf("%d%2d%2d",$cyear2,$cmonth2,$cday2);
1.61 harris41 992: $cnumeric2+=0;
993: if ($cnumeric1>$cnumeric2) {
994: return "Incorrect entry for the creation date. The starting ".
995: "date must occur before the ending date.";
996: }
997: my $cquery="(creationdate BETWEEN '$cyear1-$cmonth1-$cday1' AND '".
998: "$cyear2-$cmonth2-$cday2 23:59:59')";
999: push @queries,$cquery;
1000: }
1001: if ($lmonth1 or $lday1 or $lyear1 or $lmonth2 or $lday2 or $lyear2) {
1002: unless ($lmonth1 and $lday1 and $lyear1 and
1003: $lmonth2 and $lday2 and $lyear2) {
1004: return "Incorrect entry for the last revision date. You must ".
1005: "specify a starting month, day, and year and an ending ".
1006: "month, day, and year.";
1.62 harris41 1007: }
1.63 harris41 1008: my $lnumeric1=sprintf("%d%2d%2d",$lyear1,$lmonth1,$lday1);
1.61 harris41 1009: $lnumeric1+=0;
1.63 harris41 1010: my $lnumeric2=sprintf("%d%2d%2d",$lyear2,$lmonth2,$lday2);
1.61 harris41 1011: $lnumeric2+=0;
1012: if ($lnumeric1>$lnumeric2) {
1013: return "Incorrect entry for the last revision date. The ".
1014: "starting date must occur before the ending date.";
1015: }
1016: my $lquery="(lastrevisiondate BETWEEN '$lyear1-$lmonth1-$lday1' AND '".
1017: "$lyear2-$lmonth2-$lday2 23:59:59')";
1018: push @queries,$lquery;
1019: }
1020: if (@queries) {
1021: return join(" AND ",@queries);
1022: }
1023: return '';
1.60 harris41 1024: }
1025:
1026: sub output_date_error {
1027: my ($r,$message)=@_;
1028: # make query information persistent to allow for subsequent revision
1.65 harris41 1029: my $persistent=&make_persistent();
1.60 harris41 1030:
1031: $r->print(<<BEGINNING);
1032: <html>
1033: <head>
1034: <title>The LearningOnline Network with CAPA</title>
1035: BEGINNING
1036: $r->print(<<RESULTS);
1037: </head>
1038: <body bgcolor="#ffffff">
1039: <img align=right src=/adm/lonIcons/lonlogos.gif>
1040: <h1>Search Catalog</h1>
1041: <form method="post" action="/adm/searchcat">
1042: $persistent
1043: <input type='button' value='Revise search request'
1044: onClick='this.form.submit();'>
1045: $closebutton
1046: <hr>
1047: <h3>Helpful Message</h3>
1048: <p>
1049: $message
1050: </p>
1051: </body>
1052: </html>
1053: RESULTS
1.3 harris41 1054: }
1.1 www 1055:
1.64 harris41 1056: sub make_persistent {
1.65 harris41 1057: my $persistent='';
1.66 harris41 1058:
1.65 harris41 1059: map {
1060: if (/^form\./ && !/submit/) {
1061: my $name=$_;
1062: my $key=$name;
1.69 harris41 1063: $ENV{$key}=~s/\'//g; # do not mess with html field syntax
1.65 harris41 1064: $name=~s/^form\.//;
1065: $persistent.=<<END;
1.68 harris41 1066: <input type='hidden' name='$name' value='$ENV{$key}' />
1.65 harris41 1067: END
1068: }
1069: } (keys %ENV);
1070: return $persistent;
1.64 harris41 1071: }
1.1 www 1072: 1;
1073: __END__
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