Annotation of loncom/interface/lonsearchcat.pm, revision 1.60
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';
1.46 harris41 97: <input type="button" name="close" value="CLOSE" onClick="self.close()">
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>
232: <font color="#800000" face="helvetica"><b>LIMIT BY OTHER METADATA FIELDS:</b>
233: </font>
234: For author-specific metadata, enter in an expression in the form of
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:
1.8 harris41 242: # ---------------------------------------------------------------- Print screen
243: $r->print(<<ENDDOCUMENT);
244: <html>
245: <head>
246: <title>The LearningOnline Network with CAPA</title>
247: </head>
248: <body bgcolor="#FFFFFF">
249: <img align=right src=/adm/lonIcons/lonlogos.gif>
250: <h1>Search Catalog</h1>
251: <form method="post" action="/adm/searchcat">
252: $hidden
253: <hr>
254: <h3>Basic Search</h3>
255: <p>
256: Enter terms or phrases separated by search operators
257: such as AND or OR then press SEARCH below. Terms should be specific
258: to the title, author, subject, notes, or abstract information associated
259: with a resource.
260: <br>
1.11 harris41 261: ENDDOCUMENT
262: $r->print(&simpletextfield('basicexp',$ENV{'form.basicexp'}));
263: $r->print(' ');
264: $r->print(&simplecheckbox('titleonly',$ENV{'form.titleonly'}));
265: $r->print('<font color="#800000">Title only</font> ');
266: $r->print(&simplecheckbox('allversions',$ENV{'form.allversions'}));
267: $r->print(<<ENDDOCUMENT);
268: <font color="#800000">Search historic archives</font>
1.8 harris41 269: <br>
270: <input type="submit" name="basicsubmit" value="SEARCH">
271: <input type="reset" name="reset" value="RESET">
1.46 harris41 272: $closebutton
1.55 harris41 273: $basicviewselect
1.8 harris41 274: </p>
275: <hr>
276: <h3>Advanced Search</h3>
277: $scrout
278: <p>
279: <input type="submit" name="advancedsubmit" value="SEARCH">
280: <input type="reset" name="reset" value="RESET">
1.46 harris41 281: $closebutton
1.55 harris41 282: $advancedviewselect
1.3 harris41 283: </p>
1.8 harris41 284: </form>
285: </body>
286: </html>
287: ENDDOCUMENT
288: return OK;
289: }
290:
291: # --------------------------------------------------------- Various form fields
292:
1.11 harris41 293: sub simpletextfield {
294: my ($name,$value)=@_;
295: return '<input type=text name="'.$name.'" size=20 value="'.$value.'">';
296: }
297:
298: sub simplecheckbox {
299: my ($name,$value)=@_;
300: my $checked='';
301: $checked="CHECKED" if $value eq 'on';
302: return '<input type=checkbox name="'.$name.'" '. $checked . '>';
303: }
304:
1.8 harris41 305: sub searchphrasefield {
306: my ($title,$name,$value)=@_;
307: my $instruction=<<END;
308: Enter terms or phrases separated by search operators such
309: as AND or OR.
310: END
311: my $uctitle=uc($title);
312: return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".
313: "</FONT> $instruction<br>".
314: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
315: }
1.3 harris41 316:
1.8 harris41 317: sub dateboxes {
1.11 harris41 318: my ($name,$defaultmonth,$defaultday,$defaultyear,
319: $currentmonth,$currentday,$currentyear)=@_;
320: ($defaultmonth,$defaultday,$defaultyear)=('','','');
321: my $month=<<END;
1.8 harris41 322: <select name="${name}_month">
1.11 harris41 323: <option value='$defaultmonth'> </option>
324: <option value="1">January</option>
325: <option value="2">February</option>
326: <option value="3">March</option>
327: <option value="4">April</option>
328: <option value="5">May</option>
329: <option value="6">June</option>
330: <option value="7">July</option>
331: <option value="8">August</option>
332: <option value="9">September</option>
1.3 harris41 333: <option value="10">October</option>
334: <option value="11">November</option>
335: <option value="12">December</option>
336: </select>
1.11 harris41 337: END
338: $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);
339: my $day=<<END;
1.8 harris41 340: <select name="${name}_day">
1.11 harris41 341: <option value='$defaultday'> </option>
342: <option value="1">1</option>
343: <option value="2">2</option>
344: <option value="3">3</option>
345: <option value="4">4</option>
346: <option value="5">5</option>
347: <option value="6">6</option>
348: <option value="7">7</option>
349: <option value="8">8</option>
350: <option value="9">9</option>
351: <option value="10">10</option>
352: <option value="11">11</option>
353: <option value="12">12</option>
354: <option value="13">13</option>
355: <option value="14">14</option>
356: <option value="15">15</option>
357: <option value="16">16</option>
358: <option value="17">17</option>
359: <option value="18">18</option>
360: <option value="19">19</option>
361: <option value="20">20</option>
362: <option value="21">21</option>
363: <option value="22">22</option>
364: <option value="23">23</option>
365: <option value="24">24</option>
366: <option value="25">25</option>
367: <option value="26">26</option>
368: <option value="27">27</option>
369: <option value="28">28</option>
370: <option value="29">29</option>
371: <option value="30">30</option>
372: <option value="31">31</option>
1.3 harris41 373: </select>
1.11 harris41 374: END
375: $day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday);
376: my $year=<<END;
1.8 harris41 377: <select name="${name}_year">
1.11 harris41 378: <option value='$defaultyear'> </option>
379: <option value="1976">1976</option>
380: <option value="1977">1977</option>
381: <option value="1978">1978</option>
382: <option value="1979">1979</option>
383: <option value="1980">1980</option>
384: <option value="1981">1981</option>
385: <option value="1982">1982</option>
386: <option value="1983">1983</option>
387: <option value="1984">1984</option>
388: <option value="1985">1985</option>
389: <option value="1986">1986</option>
390: <option value="1987">1987</option>
391: <option value="1988">1988</option>
392: <option value="1989">1989</option>
393: <option value="1990">1990</option>
394: <option value="1991">1991</option>
395: <option value="1992">1992</option>
396: <option value="1993">1993</option>
397: <option value="1994">1994</option>
398: <option value="1995">1995</option>
399: <option value="1996">1996</option>
400: <option value="1997">1997</option>
401: <option value="1998">1998</option>
402: <option value="1999">1999</option>
403: <option value="2000">2000</option>
404: <option value="2001">2001</option>
405: <option value="2002">2002</option>
406: <option value="2003">2003</option>
407: <option value="2004">2004</option>
408: <option value="2005">2005</option>
409: <option value="2006">2006</option>
410: <option value="2007">2007</option>
411: <option value="2008">2008</option>
412: <option value="2009">2009</option>
413: <option value="2010">2010</option>
414: <option value="2011">2011</option>
415: <option value="2012">2012</option>
416: <option value="2013">2013</option>
417: <option value="2014">2014</option>
418: <option value="2015">2015</option>
419: <option value="2016">2016</option>
420: <option value="2017">2017</option>
421: <option value="2018">2018</option>
422: <option value="2019">2019</option>
423: <option value="2020">2020</option>
424: <option value="2021">2021</option>
425: <option value="2022">2022</option>
426: <option value="2023">2023</option>
427: <option value="2024">2024</option>
428: <option value="2025">2025</option>
429: <option value="2026">2026</option>
430: <option value="2027">2027</option>
431: <option value="2028">2028</option>
432: <option value="2029">2029</option>
433: <option value="2030">2030</option>
434: <option value="2031">2031</option>
435: <option value="2032">2032</option>
436: <option value="2033">2033</option>
437: <option value="2034">2034</option>
438: <option value="2035">2035</option>
439: <option value="2036">2036</option>
440: <option value="2037">2037</option>
441: <option value="2038">2038</option>
442: <option value="2039">2039</option>
443: <option value="2040">2040</option>
444: <option value="2041">2041</option>
445: <option value="2042">2042</option>
446: <option value="2043">2043</option>
447: <option value="2044">2044</option>
448: <option value="2045">2045</option>
449: <option value="2046">2046</option>
450: <option value="2047">2047</option>
451: <option value="2048">2048</option>
452: <option value="2049">2049</option>
453: <option value="2050">2050</option>
454: <option value="2051">2051</option>
1.3 harris41 455: </select>
456: END
1.11 harris41 457: $year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear);
458: return "$month$day$year";
1.3 harris41 459: }
460:
461: sub selectbox {
462: my ($title,$name,$value,%options)=@_;
463: my $uctitle=uc($title);
464: my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
465: "</b></font><br>".'<select name="'.$name.'">';
466: map {
467: $selout.='<option value="'.$_.'"';
468: if ($_ eq $value) { $selout.=' selected'; }
469: $selout.='>'.$options{$_}.'</option>';
470: } sort keys %options;
471: return $selout.'</select>';
1.6 harris41 472: }
473:
1.45 harris41 474: # ----------------------------------------------- Performing an advanced search
1.18 harris41 475: sub advancedsearch {
476: my ($r,$envhash)=@_;
477: my %ENV=%{$envhash};
478:
1.32 harris41 479: my $fillflag=0;
480: for my $field ('title','author','subject','keywords','url','version',
481: 'notes','abstract','mime','language','owner',
482: 'custommetadata') {
1.40 harris41 483: if (&filled($ENV{"form.$field"})) {
1.32 harris41 484: $fillflag++;
485: }
486: }
487:
488: unless ($fillflag) {
489: &output_blank_field_error($r);
490: return OK;
491: }
1.39 harris41 492:
493: my $query='';
1.44 harris41 494:
1.45 harris41 495: my @queries;
1.44 harris41 496: # Go through logical expression AND/OR/NOT phrase fields.
1.58 harris41 497:
498: foreach my $field ('title','author','subject','notes','abstract','url',
499: 'keywords','version','owner') {
1.44 harris41 500: if ($ENV{'form.'.$field}) {
1.45 harris41 501: push @queries,&build_SQL_query($field,$ENV{'form.'.$field});
1.44 harris41 502: }
503: }
1.58 harris41 504: if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
1.59 harris41 505: push @queries,"(language like \"\%$ENV{'form.language'}\%\")";
1.58 harris41 506: }
507: if ($ENV{'form.mime'} and $ENV{'form.mime'} ne 'any') {
1.59 harris41 508: push @queries,"(mime like \"\%$ENV{'form.mime'}\%\")";
1.58 harris41 509: }
510: if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
1.59 harris41 511: push @queries,"(copyright like \"\%$ENV{'form.copyright'}\%\")";
1.58 harris41 512: }
1.60 ! harris41 513: my $datequery=&build_date_queries(
! 514: $ENV{'form.creationdatestart_month'},
! 515: $ENV{'form.creationdatestart_day'},
! 516: $ENV{'form.creationdatestart_year'},
! 517: $ENV{'form.creationdateend_month'},
! 518: $ENV{'form.creationdateend_day'},
! 519: $ENV{'form.creationdateend_year'},
! 520: $ENV{'form.lastrevisiondatestart_month'},
! 521: $ENV{'form.lastrevisiondatestart_day'},
! 522: $ENV{'form.lastrevisiondatestart_year'},
! 523: $ENV{'form.lastrevisiondateend_month'},
! 524: $ENV{'form.lastrevisiondateend_day'},
! 525: $ENV{'form.lastrevisiondateend_year'},
! 526: );
! 527: if ($datequery!~/^Incorrect/) {
! 528: push @queries,$datequery;
! 529: }
! 530: else {
! 531: &output_date_error($r,$datequery);
! 532: }
1.45 harris41 533: if (@queries) {
1.58 harris41 534: $query=join(" AND ",@queries);
1.46 harris41 535: $query="select * from metadata where $query";
1.45 harris41 536: my $reply=&Apache::lonnet::metadata_query($query);
537: &output_results('Advanced',$r,$envhash,$query,$reply);
538: }
539: else {
540: &output_results('Advanced',$r,$envhash,$query);
541: }
1.24 harris41 542: return OK;
1.18 harris41 543: }
544:
1.26 harris41 545: # ---------------------------------------------------- see if a field is filled
546: sub filled {
1.31 harris41 547: my ($field)=@_;
548: if ($field=~/\S/) {
1.28 harris41 549: return 1;
550: }
551: else {
552: return 0;
553: }
1.26 harris41 554: }
555:
1.6 harris41 556: # --------------------------------------------------- Performing a basic search
557: sub basicsearch {
1.19 harris41 558: my ($r,$envhash)=@_;
559: my %ENV=%{$envhash};
1.6 harris41 560:
1.26 harris41 561: unless (&filled($ENV{'form.basicexp'})) {
1.24 harris41 562: &output_blank_field_error($r);
563: return OK;
564: }
1.22 harris41 565:
1.39 harris41 566: my $query='';
1.33 harris41 567: my $concatarg=join('," ",',
568: ('title', 'author', 'subject', 'notes', 'abstract'));
569:
570: $query="select * from metadata where concat($concatarg) like '\%$ENV{'form.basicexp'}\%'";
1.13 harris41 571: my $reply=&Apache::lonnet::metadata_query($query);
1.44 harris41 572: &output_results('Basic',$r,$envhash,$query,$reply);
1.18 harris41 573: return OK;
1.22 harris41 574: }
575:
1.44 harris41 576: # ---------------- Message to output when there are not enough fields filled in
1.22 harris41 577: sub output_blank_field_error {
578: my ($r)=@_;
579: # make query information persistent to allow for subsequent revision
580: my $persistent='';
581: map {
582: if (/^form\./ && !/submit/) {
583: my $name=$_;
584: my $key=$name;
585: $name=~s/^form\.//;
586: $persistent.=<<END;
587: <INPUT TYPE='hidden' NAME='$name' VALUE='$ENV{$key}'>
588: END
589: }
590: } (keys %ENV);
591:
592: $r->print(<<BEGINNING);
593: <html>
594: <head>
595: <title>The LearningOnline Network with CAPA</title>
596: BEGINNING
597: $r->print(<<RESULTS);
598: </head>
599: <body bgcolor="#ffffff">
600: <img align=right src=/adm/lonIcons/lonlogos.gif>
601: <h1>Search Catalog</h1>
602: <form method="post" action="/adm/searchcat">
603: $persistent
604: <input type='button' value='Revise search request'
605: onClick='this.form.submit();'>
1.46 harris41 606: $closebutton
1.22 harris41 607: <hr>
608: <h3>Helpful Message</h3>
609: <p>
610: Incorrect search query due to blank entry fields.
611: You need to fill in the relevant
612: fields on the search page in order for a query to be
613: processed.
614: </p>
615: </body>
616: </html>
617: RESULTS
1.18 harris41 618: }
1.6 harris41 619:
1.18 harris41 620: # ----------------------------- format and output results based on a reply list
621: sub output_results {
1.44 harris41 622: my ($mode,$r,$envhash,$query,@replylist)=@_;
1.19 harris41 623: my %ENV=%{$envhash};
1.44 harris41 624: my $compiledresult='';
625:
1.18 harris41 626: foreach my $reply (@replylist) {
627:
628: my @results;
629:
630: my $replyfile='';
631: $reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting
632: $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;
633: $reply=~/(.*?)\_/;
634: my $hostname=$1;
1.52 harris41 635: sleep 3; # temporary fix, need to check for completion and status
1.18 harris41 636: {
637: while (1) {
638: last if -e $replyfile;
639: sleep 1;
640: }
641: # QUESTION: how should I handle this error condition..
642: # I'm sure there is syntax elsewhere I can use..
643: my $fh=Apache::File->new($replyfile) or
644: ($r->print('file cannot be opened') and return OK);
645: @results=<$fh>;
1.6 harris41 646: }
647:
1.18 harris41 648: foreach my $result (@results) {
1.50 harris41 649: my @fields=map
650: {&Apache::lonnet::unescape($_)}
651: (split(/\,/,$result));
1.18 harris41 652: my ($title,$author,$subject,$url,$keywords,$version,
653: $notes,$abstract,$mime,$lang,
1.50 harris41 654: $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;
1.18 harris41 655: my $shortabstract=$abstract;
656: $shortabstract=substr($abstract,0,200) if length($abstract)>200;
1.51 harris41 657: $fields[7]=$shortabstract;
1.18 harris41 658: $compiledresult.=<<END;
1.56 harris41 659: <p>
1.8 harris41 660: END
1.18 harris41 661: $compiledresult.=<<END if $ENV{'form.catalogmode'} eq 'interactive';
1.8 harris41 662: <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
1.10 harris41 663: onClick="javascript:select_data('$title','$url')">
1.8 harris41 664: </font>
665: <br>
666: END
1.51 harris41 667: my $httphost=$ENV{'HTTP_HOST'};
1.53 harris41 668:
1.55 harris41 669: my $viewselect;
670: if ($mode eq 'Basic') {
671: $viewselect=$ENV{'form.basicviewselect'};
672: }
673: elsif ($mode eq 'Advanced') {
674: $viewselect=$ENV{'form.advancedviewselect'};
675: }
676:
677: if ($viewselect eq 'Detailed Citation View') {
1.51 harris41 678: $compiledresult.=&detailed_citation_view(@fields,
679: $hostname,$httphost);
1.50 harris41 680: }
1.55 harris41 681: elsif ($viewselect eq 'Summary View') {
1.51 harris41 682: $compiledresult.=&summary_view(@fields,$hostname,$httphost);
1.50 harris41 683: }
1.55 harris41 684: elsif ($viewselect eq 'Fielded Format') {
1.51 harris41 685: $compiledresult.=&fielded_format_view(@fields,$hostname,
686: $httphost);
1.50 harris41 687: }
1.55 harris41 688: elsif ($viewselect eq 'XML/SGML') {
1.51 harris41 689: $compiledresult.=&xml_sgml_view(@fields,$hostname,$httphost);
1.50 harris41 690: }
691:
1.18 harris41 692: }
1.6 harris41 693:
1.18 harris41 694: unless ($compiledresult) {
695: $compiledresult="There were no results that matched your query";
696: }
1.6 harris41 697:
1.18 harris41 698: # make query information persistent to allow for subsequent revision
699: my $persistent='';
700: map {
701: if (/^form\./ && !/submit/) {
702: my $name=$_;
703: my $key=$name;
704: $name=~s/^form\.//;
705: $persistent.=<<END;
1.9 harris41 706: <INPUT TYPE='hidden' NAME='$name' VALUE='$ENV{$key}'>
707: END
1.18 harris41 708: }
709: } (keys %ENV);
1.9 harris41 710:
1.18 harris41 711: $r->print(<<BEGINNING);
1.6 harris41 712: <html>
713: <head>
714: <title>The LearningOnline Network with CAPA</title>
1.8 harris41 715: BEGINNING
1.18 harris41 716: $r->print(<<SCRIPT) if $ENV{'form.catalogmode'} eq 'interactive';
1.8 harris41 717: <script>
718: function select_data(title,url) {
719: changeTitle(title);
720: changeURL(url);
721: }
722: function changeTitle(val) {
723: if (opener.inf.document.forms.resinfo.elements.t) {
724: opener.inf.document.forms.resinfo.elements.t.value=val;
725: }
726: }
727: function changeURL(val) {
728: if (opener.inf.document.forms.resinfo.elements.u) {
729: opener.inf.document.forms.resinfo.elements.u.value=val;
730: }
731: }
732: </script>
733: SCRIPT
1.18 harris41 734: $r->print(<<RESULTS);
1.6 harris41 735: </head>
736: <body bgcolor="#ffffff">
737: <img align=right src=/adm/lonIcons/lonlogos.gif>
738: <h1>Search Catalog</h1>
739: <form method="post" action="/adm/searchcat">
1.9 harris41 740: <input type='button' value='Revise search request'
741: onClick='this.form.submit();'>
1.46 harris41 742: $closebutton
1.9 harris41 743: $persistent
1.6 harris41 744: <hr>
745: <h3>Search Query</h3>
1.43 harris41 746: RESULTS
747: if ($mode eq 'Basic') {
748: $r->print(<<RESULTS);
1.6 harris41 749: <p>
1.19 harris41 750: <b>Basic search:</b> $ENV{'form.basicexp'}
1.6 harris41 751: </p>
1.43 harris41 752: RESULTS
1.44 harris41 753: }
1.43 harris41 754: elsif ($mode eq 'Advanced') {
755: $r->print(<<RESULTS);
756: <p>
757: <b>Advanced search</b>
1.44 harris41 758: $query
1.43 harris41 759: </p>
760: RESULTS
761: }
1.44 harris41 762: $r->print(<<RESULTS);
1.6 harris41 763: <h3>Search Results</h3>
764: $compiledresult
765: </body>
766: </html>
767: RESULTS
1.18 harris41 768: }
1.41 harris41 769: }
770:
771: # ------------------------------------------------------------- build_SQL_query
772: sub build_SQL_query {
1.43 harris41 773: my ($field_name,$logic_statement)=@_;
774: my $q=new Text::Query('abc',
775: -parse => 'Text::Query::ParseAdvanced',
776: -build => 'Text::Query::Build');
1.44 harris41 777: $q->prepare($logic_statement);
1.43 harris41 778: my $matchexp=${$q}{'matchexp'}; chomp $matchexp;
779: my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);
1.44 harris41 780: return $sql_query;
1.43 harris41 781: }
1.41 harris41 782:
1.43 harris41 783: # - Recursively parse a reverse notation expression into a SQL query expression
784: sub recursive_SQL_query_build {
785: my ($dkey,$pattern)=@_;
786: my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
787: return $pattern unless @matches;
788: foreach my $match (@matches) {
789: $match=~/\[ (\w+)\s(.*) \]/;
1.44 harris41 790: my ($key,$value)=($1,$2);
1.43 harris41 791: my $replacement='';
792: if ($key eq 'literal') {
793: $replacement="($dkey like \"\%$value\%\")";
794: }
795: elsif ($key eq 'and') {
796: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
797: $replacement="($1 AND $2)";
798: }
799: elsif ($key eq 'or') {
800: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
801: $replacement="($1 OR $2)";
802: }
803: substr($pattern,
804: index($pattern,$match),
805: length($match),
806: $replacement
807: );
808: }
809: &recursive_SQL_query_build($dkey,$pattern);
1.50 harris41 810: }
811:
812: # ------------------------------------------------------ Detailed Citation View
813: sub detailed_citation_view {
814: my ($title,$author,$subject,$url,$keywords,$version,
1.51 harris41 815: $notes,$shortabstract,$mime,$lang,
816: $creationdate,$lastrevisiondate,$owner,$copyright,
817: $hostname,$httphost)=@_;
1.50 harris41 818: my $result=<<END;
1.56 harris41 819: <i>$owner</i>, last revised $lastrevisiondate
820: <h3><A HREF="http://$httphost$url" TARGET='search_preview'>$title</A></h3>
821: <h3>$author</h3>
822: </p>
823: <p>
1.50 harris41 824: <b>Subject:</b> $subject<br>
825: <b>Keyword(s):</b> $keywords<br>
826: <b>Notes:</b> $notes<br>
827: <b>MIME Type:</b> $mimetag{$mime}<br>
828: <b>Language:</b> $language{$lang}<br>
1.56 harris41 829: <b>Copyright/Distribution:</b> $cprtag{$copyright}<br>
830: $shortabstract
1.50 harris41 831: </p>
832: END
833: return $result;
834: }
835:
836: # ---------------------------------------------------------------- Summary View
837: sub summary_view {
838: my ($title,$author,$subject,$url,$keywords,$version,
1.51 harris41 839: $notes,$shortabstract,$mime,$lang,
840: $creationdate,$lastrevisiondate,$owner,$copyright,
841: $hostname,$httphost)=@_;
1.50 harris41 842: my $result=<<END;
1.56 harris41 843: <a href="http://$httphost$url" TARGET='search_preview'>$author</a><br />
844: $title<br />
845: $owner -- $lastrevisiondate<br />
846: $cprtag{$copyright}<br />
1.50 harris41 847: </p>
848: END
849: return $result;
850: }
851:
852: # -------------------------------------------------------------- Fielded Format
853: sub fielded_format_view {
854: my ($title,$author,$subject,$url,$keywords,$version,
1.51 harris41 855: $notes,$shortabstract,$mime,$lang,
856: $creationdate,$lastrevisiondate,$owner,$copyright,
857: $hostname,$httphost)=@_;
1.50 harris41 858: my $result=<<END;
1.51 harris41 859: <b>URL: </b> <A HREF="http://$httphost$url" TARGET='search_preview'>$url</A>
1.56 harris41 860: <br />
861: <b>Title:</b> $title<br />
862: <b>Author(s):</b> $author<br />
863: <b>Subject:</b> $subject<br />
864: <b>Keyword(s):</b> $keywords<br />
865: <b>Notes:</b> $notes<br />
866: <b>MIME Type:</b> $mimetag{$mime}<br />
867: <b>Language:</b> $language{$lang}<br />
868: <b>Creation Date:</b> $creationdate<br />
869: <b>Last Revision Date:</b> $lastrevisiondate<br />
870: <b>Publisher/Owner:</b> $owner<br />
871: <b>Copyright/Distribution:</b> $cprtag{$copyright}<br />
872: <b>Repository Location:</b> $hostname<br />
873: <b>Abstract:</b> $shortabstract<br />
1.50 harris41 874: </p>
875: END
876: return $result;
877: }
878:
879: # -------------------------------------------------------------------- XML/SGML
880: sub xml_sgml_view {
881: my ($title,$author,$subject,$url,$keywords,$version,
1.51 harris41 882: $notes,$shortabstract,$mime,$lang,
883: $creationdate,$lastrevisiondate,$owner,$copyright,
884: $hostname,$httphost)=@_;
1.50 harris41 885: my $result=<<END;
1.56 harris41 886: <pre>
887: <LonCapaResource>
1.57 harris41 888: <url>$url</url>
1.56 harris41 889: <title>$title</title>
890: <author>$author</author>
891: <subject>$subject</subject>
892: <keywords>$keywords</keywords>
893: <notes>$notes</notes>
894: <mimeInfo>
895: <mime>$mime</mime>
896: <mimetag>$mimetag{$mime}</mimetag>
897: </mimeInfo>
898: <languageInfo>
899: <language>$lang</language>
900: <languagetag>$language{$lang}</languagetag>
901: </languageInfo>
902: <creationdate>$creationdate</creationdate>
903: <lastrevisiondate>$lastrevisiondate</lastrevisiondate>
904: <owner>$owner</owner>
905: <copyrightInfo>
906: <copyright>$copyright</copyright>
907: <copyrighttag>$cprtag{$copyright}</copyrighttag>
908: </copyrightInfo>
909: <repositoryLocation>$hostname</repositoryLocation>
910: <shortabstract>$shortabstract</shortabstract>
1.57 harris41 911: </LonCapaResource>
1.56 harris41 912: </pre>
1.50 harris41 913: END
914: return $result;
1.60 ! harris41 915: }
! 916:
! 917: sub build_date_queries {
! 918: my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,
! 919: $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;
! 920:
! 921: return "Incorrect for some reason.";
! 922: }
! 923:
! 924: sub output_date_error {
! 925: my ($r,$message)=@_;
! 926: # make query information persistent to allow for subsequent revision
! 927: my $persistent='';
! 928: map {
! 929: if (/^form\./ && !/submit/) {
! 930: my $name=$_;
! 931: my $key=$name;
! 932: $name=~s/^form\.//;
! 933: $persistent.=<<END;
! 934: <INPUT TYPE='hidden' NAME='$name' VALUE='$ENV{$key}'>
! 935: END
! 936: }
! 937: } (keys %ENV);
! 938:
! 939: $r->print(<<BEGINNING);
! 940: <html>
! 941: <head>
! 942: <title>The LearningOnline Network with CAPA</title>
! 943: BEGINNING
! 944: $r->print(<<RESULTS);
! 945: </head>
! 946: <body bgcolor="#ffffff">
! 947: <img align=right src=/adm/lonIcons/lonlogos.gif>
! 948: <h1>Search Catalog</h1>
! 949: <form method="post" action="/adm/searchcat">
! 950: $persistent
! 951: <input type='button' value='Revise search request'
! 952: onClick='this.form.submit();'>
! 953: $closebutton
! 954: <hr>
! 955: <h3>Helpful Message</h3>
! 956: <p>
! 957: $message
! 958: </p>
! 959: </body>
! 960: </html>
! 961: RESULTS
1.3 harris41 962: }
1.1 www 963:
964: 1;
965: __END__
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