1: # The LearningOnline Network with CAPA
2: #
3: # Search Catalog
4: #
5: # YEAR=2001
6: # 03/08/2001 Scott Harrison
7: # Scott Harrison: 03/12/2001, 03/13/2001, 03/14/2001, 03/15/2001, 03/19/2001
8: # Scott Harrison: 03/20/2001, 03/21/2001, 03/22/2001, 03/26/2001, 03/27/2001
9: # Scott Harrison: 04/02/2001, 08/15/2001, 08/24/2001, 08/25/2001
10:
11: ###############################################################################
12: ## ##
13: ## ORGANIZATION OF THIS PERL MODULE ##
14: ## ##
15: ## 1. Description of functions ##
16: ## 2. Modules used by this module ##
17: ## 3. Choices for different output views (detailed, summary, xml, etc) ##
18: ## 4. BEGIN block (to be run once after compilation) ##
19: ## 5. Handling routine called via Apache and mod_perl ##
20: ## 6. Other subroutines ##
21: ## ##
22: ###############################################################################
23:
24: # ---------------------------------------------------- Description of functions
25: #
26: #
27: # === WEB HANDLER FUNCTIONS
28: # BEGIN() : run once after compilation to initialize values
29: # handler(server reference) : interacts with the Apache server layer
30: # (for /adm/searchcat URLs)
31: # get_unprocessed_cgi() : reads in critical name/value pairs that may have not
32: # been processed and passed into %ENV by the web server
33: # make_persistent() : makes a set of hidden HTML fields to make
34: # SQL search interface information to be persistent
35: #
36: #
37: # === WEB INTERFACE COMPONENT FUNCTIONS
38: # simpletextfield(name,value) : returns HTML formatted string for simple text
39: # field
40: # simplecheckbox(name,value) : returns HTML formatted string for simple
41: # checkbox
42: # searchphrasefield(title,name,value) : returns HTML formatted string for
43: # a search expression phrase field
44: # dateboxes(name, defaultmonth, defaultday, defaultyear) : returns HTML
45: # formatted string
46: # for a calendar date
47: # selectbox(title,name,value,%HASH=options) : returns HTML formatted string for
48: # a selection box field
49: #
50: #
51: # === SEARCH FUNCTIONS
52: # advancedsearch(server reference, environment reference) : perform a complex
53: # multi-field logical query
54: # basicsearch(server reference, environment reference) : perform a simple
55: # single-field logical query
56: # build_SQL_query(field name, logic) : builds a SQL query string from a
57: # logical expression with AND/OR keywords
58: # build_custommetadata_query(field_name, logic_statement) : builds a perl
59: # regular expression from a logical expression with AND/OR
60: # keywords
61: # recursive_SQL_query_build(field name, reverse notation expression) :
62: # builds a SQL query string from a reverse notation expression
63: # logical expression with AND/OR keywords
64: # build_date_queries(cmonth1, cday1, cyear1, cmonth2, cday2, cyear2,
65: # lmonth1, lday1, lyear1, lmonth2, lday2, lyear2) :
66: # Builds a SQL logic query to check time/date entries.
67: #
68: #
69: # === OUTPUTTING RESULTS FUNCTION
70: # output_results(output mode,
71: # server reference,
72: # environment reference,
73: # reply list reference) : outputs results from search
74: #
75: #
76: # === DIFFERENT WAYS TO VIEW METADATA RECORDS
77: # detailed_citation_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
78: # see metadata viewing notes below
79: # summary_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
80: # see metadata viewing notes below
81: # fielded_format_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
82: # see metadata viewing notes below
83: # xml_sgml_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
84: # see metadata viewing notes below
85: # ___________________________________________________________________________
86: # | * Metadata viewing notes |
87: # | Output is a HTML-ified string. |
88: # | Input arguments are title, author, subject, url, keywords, version, notes,|
89: # | short abstract, mime, language, creation date, last revision date, owner, |
90: # | copyright, hostname, httphost, and extra custom metadata to show. |
91: # ---------------------------------------------------------------------------
92: #
93: #
94: # === TEST CONDITIONAL FUNCTIONS
95: # filled(field) : determines whether a given field has been filled
96: #
97: #
98: # === ERROR FUNCTIONS
99: # output_blank_field_error(server reference) : outputs a message saying that
100: # more fields need to be filled in
101: # output_date_error(server reference, error message) : outputs
102: # an error message specific to bad date format.
103:
104: package Apache::lonsearchcat;
105:
106: # ------------------------------------------------- modules used by this module
107: use strict;
108: use Apache::Constants qw(:common);
109: use Apache::lonnet();
110: use Apache::File();
111: use CGI qw(:standard);
112: use Text::Query;
113:
114: # ---------------------------------------- variables used throughout the module
115:
116: # -- information holders
117: my %language; # holds contents of language.tab
118: my %cprtag; # holds contents of copyright.tab
119: my %mimetag; # holds contents of filetypes.tab
120: my %hostdomains; # matches host name to host domain
121: my %hostips; # matches host name to host ip
122: my %hitcount; # stores number of hits per host
123:
124: # -- dynamically rendered interface components
125: my $closebutton; # button that closes the search window
126: my $importbutton; # button to take the selected results and go to group sorting
127:
128: # -- miscellaneous variables
129: my $scrout; # string that holds portions of the screen output
130: my $fnum; # search result counter
131: my $yourself; # allows for quickly limiting to oneself
132:
133: # ------------------------------------------ choices for different output views
134: # Detailed Citation View ---> sub detailed_citation_view
135: # Summary View ---> sub summary_view
136: # Fielded Format ---> sub fielded_format_view
137: # XML/SGML ---> sub xml_sgml_view
138: my $basicviewselect=<<END;
139: <select name='basicviewselect'>
140: <option value='Detailed Citation View'>Detailed Citation View</option>
141: <option value='Summary View'>Summary View</option>
142: <option value='Fielded Format'>Fielded Format</option>
143: <option value='XML/SGML'>XML/SGML</option>
144: </select>
145: END
146: my $advancedviewselect=<<END;
147: <select name='advancedviewselect'>
148: <option value='Detailed Citation View'>Detailed Citation View</option>
149: <option value='Summary View'>Summary View</option>
150: <option value='Fielded Format'>Fielded Format</option>
151: <option value='XML/SGML'>XML/SGML</option>
152: </select>
153: END
154:
155: # ----------------------------------------------------------------------- BEGIN
156: sub BEGIN {
157: # --------------------------------- Compute various listings of metadata values
158: $language{'any'}='Any language';
159: {
160: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
161: '/language.tab');
162: map {
163: $_=~/(\w+)\s+([\w\s\-]+)/; chomp;
164: $language{$1}=$2;
165: } <$fh>;
166: }
167: $cprtag{'any'}='Any copyright/distribution';
168: {
169: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonIncludes'}.
170: '/copyright.tab');
171: map {
172: $_=~/(\w+)\s+([\w\s\-]+)/; chomp;
173: $cprtag{$1}=$2;
174: } <$fh>;
175: }
176: $mimetag{'any'}='Any type';
177: {
178: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
179: '/filetypes.tab');
180: map {
181: $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/; chomp;
182: $mimetag{$1}=".$1 $3";
183: } <$fh>;
184: }
185: {
186: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
187: '/hosts.tab');
188: map {
189: $_=~/(\w+?)\:(\w+?)\:(\w+?)\:(.*)/; chomp;
190: if ($3 eq 'library') {
191: $hostdomains{$1}=$2;
192: $hostips{$1}=$4;
193: }
194: } <$fh>;
195: }
196: }
197:
198: # ----------------------------- Handling routine called via Apache and mod_perl
199: sub handler {
200: my $r = shift;
201:
202: &get_unprocessed_cgi();
203:
204: $r->content_type('text/html');
205: $r->send_http_header;
206: return OK if $r->header_only;
207:
208: # ----------------------------------- configure dynamic components of interface
209: my $hidden='';
210: if ($ENV{'form.catalogmode'} eq 'interactive') {
211: $hidden="<input type='hidden' name='catalogmode' value='interactive'>".
212: "\n";
213: $closebutton="<input type='button' name='close' value='CLOSE' ".
214: "onClick='self.close()'>"."\n";
215: }
216: elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
217: $hidden=<<END;
218: <input type='hidden' name='catalogmode' value='groupsearch'>
219: END
220: $closebutton=<<END;
221: <input type='button' name='close' value='CLOSE' onClick='self.close()'>
222: END
223: $importbutton=<<END;
224: <input type='button' name='import' value='IMPORT'
225: onClick='javascript:select_group()'>
226: END
227: }
228:
229: # ------------------------------------------------------ Determine current user
230: $yourself=$ENV{'user.name'}.'@'.$ENV{'user.domain'};
231:
232: # --- Now, depending on the interface actions, do one of three things here:
233: # --- 1. a basic search
234: # --- 2. an advanced search
235: # --- 3. output a search interface
236:
237: # ----------------------------------- See if a search invocation should be done
238: if ($ENV{'form.basicsubmit'} eq 'SEARCH') {
239: return &basicsearch($r,\%ENV);
240: }
241: elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {
242: return &advancedsearch($r,\%ENV);
243: }
244:
245: # ----------------------------- Else, begin building search interface to output
246: $scrout=''; # building a part of screen output
247: $scrout.=&searchphrasefield('Limit by title','title',
248: $ENV{'form.title'});
249:
250: $scrout.=&searchphrasefield('Limit by author','author',
251: $ENV{'form.author'});
252:
253: $scrout.=&searchphrasefield('Limit by subject','subject',
254: $ENV{'form.subject'});
255:
256: $scrout.=&searchphrasefield('Limit by keywords','keywords',
257: $ENV{'form.keywords'});
258:
259: $scrout.=&searchphrasefield('Limit by URL','url',
260: $ENV{'form.url'});
261:
262: # $scrout.=&searchphrasefield('Limit by version','version',
263: # $ENV{'form.version'});
264:
265: $scrout.=&searchphrasefield('Limit by notes','notes',
266: $ENV{'form.notes'});
267:
268: $scrout.=&searchphrasefield('Limit by abstract','abstract',
269: $ENV{'form.abstract'});
270:
271: $ENV{'form.mime'}='notxxx' unless length($ENV{'form.mime'});
272: $scrout.=&selectbox('Limit by MIME type','mime',
273: $ENV{'form.mime'},%mimetag);
274:
275: $ENV{'form.language'}='any' unless length($ENV{'form.language'});
276:
277: $scrout.=&selectbox('Limit by language','language',
278: $ENV{'form.language'},%language);
279:
280:
281: # ------------------------------------------------ Compute date selection boxes
282: $scrout.=<<CREATIONDATESTART;
283: <p>
284: <font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
285: </font>
286: <br />
287: between:
288: CREATIONDATESTART
289: $scrout.=&dateboxes('creationdatestart',1,1,1976,
290: $ENV{'form.creationdatestart_month'},
291: $ENV{'form.creationdatestart_day'},
292: $ENV{'form.creationdatestart_year'},
293: );
294: $scrout.=<<CREATIONDATEEND;
295: and:
296: CREATIONDATEEND
297: $scrout.=&dateboxes('creationdateend',12,31,2051,
298: $ENV{'form.creationdateend_month'},
299: $ENV{'form.creationdateend_day'},
300: $ENV{'form.creationdateend_year'},
301: );
302: $scrout.="</p>";
303:
304: $scrout.=<<LASTREVISIONDATESTART;
305: <p>
306: <font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
307: </b></font>
308: <br />between:
309: LASTREVISIONDATESTART
310: $scrout.=&dateboxes('lastrevisiondatestart',1,1,1976,
311: $ENV{'form.lastrevisiondatestart_month'},
312: $ENV{'form.lastrevisiondatestart_day'},
313: $ENV{'form.lastrevisiondatestart_year'},
314: );
315: $scrout.=<<LASTREVISIONDATEEND;
316: and:
317: LASTREVISIONDATEEND
318: $scrout.=&dateboxes('lastrevisiondateend',12,31,2051,
319: $ENV{'form.lastrevisiondateend_month'},
320: $ENV{'form.lastrevisiondateend_day'},
321: $ENV{'form.lastrevisiondateend_year'},
322: );
323: $scrout.='</p>';
324:
325: $scrout.=&searchphrasefield('Limit by publisher/owner','owner',
326: $ENV{'form.owner'});
327:
328: $ENV{'form.copyright'}='any' unless length($ENV{'form.copyright'});
329: $scrout.=&selectbox('Limit by copyright/distribution','copyright',
330: $ENV{'form.copyright'},%cprtag);
331:
332: # ------------------------------------------- Compute customized metadata field
333: $scrout.=<<CUSTOMMETADATA;
334: <p>
335: <font color="#800000" face="helvetica"><b>LIMIT BY SPECIAL METADATA FIELDS:</b>
336: </font>
337: For resource-specific metadata, enter in an expression in the form of
338: <i>key</i>=<i>value</i> separated by operators such as AND, OR or NOT.<br />
339: <b>Example:</b> grandmother=75 OR grandfather=85
340: <br />
341: CUSTOMMETADATA
342: $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
343: $scrout.=' <i>initial users of this system do not need to worry about this option</i>';
344:
345: $scrout.=<<CUSTOMSHOW;
346: <p>
347: <font color="#800000" face="helvetica"><b>SHOW SPECIAL METADATA FIELDS:</b>
348: </font>
349: Enter in a space-separated list of special metadata fields to show
350: in a fielded listing for each record result.
351: <br />
352: CUSTOMSHOW
353: $scrout.=&simpletextfield('customshow',$ENV{'form.customshow'});
354: $scrout.=' <i>initial users of this system do not need to worry about this option</i>';
355:
356: # ---------------------------------------------------------------- Print screen
357: $r->print(<<ENDDOCUMENT);
358: <html>
359: <head>
360: <title>The LearningOnline Network with CAPA</title>
361: <script type="text/javascript">
362: function openhelp(val) {
363: openhelpwin=open('/adm/help/searchcat.html','helpscreen',
364: 'scrollbars=1,width=400,height=300');
365: openhelpwin.focus();
366: }
367: </script>
368: </head>
369: <body bgcolor="#FFFFFF">
370: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
371: <h1>Search Catalog</h1>
372: <form method="post" action="/adm/searchcat">
373: $hidden
374: <hr />
375: <h3>Basic Search</h3>
376: <p>
377: Enter terms or phrases separated by search operators
378: such as AND, OR, or NOT then press SEARCH below. Terms should be specific
379: to the title, author, subject, notes, or abstract information associated
380: with a resource.
381: <br />
382: ENDDOCUMENT
383: $r->print(&simpletextfield('basicexp',$ENV{'form.basicexp'}));
384: $r->print(' ');
385: $r->print(&simplecheckbox('titleonly',$ENV{'form.titleonly'}));
386: $r->print('<font color="#800000">Title only</font> ');
387: # $r->print(&simplecheckbox('allversions',$ENV{'form.allversions'}));
388: # <font color="#800000">Search historic archives</font>
389: $r->print(<<ENDDOCUMENT);
390: <br />
391: <input type="submit" name="basicsubmit" value='SEARCH' />
392: <input type="reset" name="reset" value='RESET' />
393: $closebutton
394: $basicviewselect
395: <input type="button" value="HELP" onClick="openhelp()" />
396: </p>
397: <hr />
398: <h3>Advanced Search</h3>
399: $scrout
400: <p>
401: <input type="submit" name="advancedsubmit" value='SEARCH' />
402: <input type="reset" name="reset" value='RESET' />
403: $closebutton
404: $advancedviewselect
405: <input type="button" value="HELP" onClick="openhelp()" />
406: </p>
407: </form>
408: </body>
409: </html>
410: ENDDOCUMENT
411: return OK;
412: }
413:
414: # ----------- grab unprocessed CGI variables that may have been appended to URL
415: sub get_unprocessed_cgi {
416: map {
417: my ($name, $value) = split(/=/,$_);
418: $value =~ tr/+/ /;
419: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
420: if ($name eq 'catalogmode') {
421: $ENV{'form.'.$name}=$value;
422: }
423: } (split(/&/,$ENV{'QUERY_STRING'}));
424: }
425:
426: # ------------------------------------------------------------- make persistent
427: sub make_persistent {
428: my $persistent='';
429:
430: map {
431: if (/^form\./ && !/submit/) {
432: my $name=$_;
433: my $key=$name;
434: $ENV{$key}=~s/\'//g; # do not mess with html field syntax
435: $name=~s/^form\.//;
436: $persistent.=<<END;
437: <input type='hidden' name='$name' value='$ENV{$key}' />
438: END
439: }
440: } (keys %ENV);
441: return $persistent;
442: }
443:
444: # --------------------------------------------------------- Various form fields
445:
446: sub simpletextfield {
447: my ($name,$value)=@_;
448: return '<input type=text name=\''.$name.
449: '\' size=20 value=\''.$value.'\' />';
450: }
451:
452: sub simplecheckbox {
453: my ($name,$value)=@_;
454: my $checked='';
455: $checked="CHECKED" if $value eq 'on';
456: return '<input type=checkbox name=\''.$name.'\' '. $checked . '>';
457: }
458:
459: sub searchphrasefield {
460: my ($title,$name,$value)=@_;
461: my $instruction=<<END;
462: Enter terms or phrases separated by search operators such
463: as AND, OR, or NOT.
464: END
465: my $uctitle=uc($title);
466: return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".
467: "</FONT> $instruction<br />".
468: '<input type=text name="'.$name.'" size=80 value=\''.$value.'\'>';
469: }
470:
471: sub dateboxes {
472: my ($name,$defaultmonth,$defaultday,$defaultyear,
473: $currentmonth,$currentday,$currentyear)=@_;
474: ($defaultmonth,$defaultday,$defaultyear)=('','','');
475: my $month=<<END;
476: <select name="${name}_month">
477: <option value='$defaultmonth'> </option>
478: <option value="1">January</option>
479: <option value="2">February</option>
480: <option value="3">March</option>
481: <option value="4">April</option>
482: <option value="5">May</option>
483: <option value="6">June</option>
484: <option value="7">July</option>
485: <option value="8">August</option>
486: <option value="9">September</option>
487: <option value="10">October</option>
488: <option value="11">November</option>
489: <option value="12">December</option>
490: </select>
491: END
492: $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);
493: my $day=<<END;
494: <select name="${name}_day">
495: <option value='$defaultday'> </option>
496: <option value="1">1</option>
497: <option value="2">2</option>
498: <option value="3">3</option>
499: <option value="4">4</option>
500: <option value="5">5</option>
501: <option value="6">6</option>
502: <option value="7">7</option>
503: <option value="8">8</option>
504: <option value="9">9</option>
505: <option value="10">10</option>
506: <option value="11">11</option>
507: <option value="12">12</option>
508: <option value="13">13</option>
509: <option value="14">14</option>
510: <option value="15">15</option>
511: <option value="16">16</option>
512: <option value="17">17</option>
513: <option value="18">18</option>
514: <option value="19">19</option>
515: <option value="20">20</option>
516: <option value="21">21</option>
517: <option value="22">22</option>
518: <option value="23">23</option>
519: <option value="24">24</option>
520: <option value="25">25</option>
521: <option value="26">26</option>
522: <option value="27">27</option>
523: <option value="28">28</option>
524: <option value="29">29</option>
525: <option value="30">30</option>
526: <option value="31">31</option>
527: </select>
528: END
529: $day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday);
530: my $year=<<END;
531: <select name="${name}_year">
532: <option value='$defaultyear'> </option>
533: <option value="1976">1976</option>
534: <option value="1977">1977</option>
535: <option value="1978">1978</option>
536: <option value="1979">1979</option>
537: <option value="1980">1980</option>
538: <option value="1981">1981</option>
539: <option value="1982">1982</option>
540: <option value="1983">1983</option>
541: <option value="1984">1984</option>
542: <option value="1985">1985</option>
543: <option value="1986">1986</option>
544: <option value="1987">1987</option>
545: <option value="1988">1988</option>
546: <option value="1989">1989</option>
547: <option value="1990">1990</option>
548: <option value="1991">1991</option>
549: <option value="1992">1992</option>
550: <option value="1993">1993</option>
551: <option value="1994">1994</option>
552: <option value="1995">1995</option>
553: <option value="1996">1996</option>
554: <option value="1997">1997</option>
555: <option value="1998">1998</option>
556: <option value="1999">1999</option>
557: <option value="2000">2000</option>
558: <option value="2001">2001</option>
559: <option value="2002">2002</option>
560: <option value="2003">2003</option>
561: <option value="2004">2004</option>
562: <option value="2005">2005</option>
563: <option value="2006">2006</option>
564: <option value="2007">2007</option>
565: <option value="2008">2008</option>
566: <option value="2009">2009</option>
567: <option value="2010">2010</option>
568: <option value="2011">2011</option>
569: <option value="2012">2012</option>
570: <option value="2013">2013</option>
571: <option value="2014">2014</option>
572: <option value="2015">2015</option>
573: <option value="2016">2016</option>
574: <option value="2017">2017</option>
575: <option value="2018">2018</option>
576: <option value="2019">2019</option>
577: <option value="2020">2020</option>
578: <option value="2021">2021</option>
579: <option value="2022">2022</option>
580: <option value="2023">2023</option>
581: <option value="2024">2024</option>
582: <option value="2025">2025</option>
583: <option value="2026">2026</option>
584: <option value="2027">2027</option>
585: <option value="2028">2028</option>
586: <option value="2029">2029</option>
587: <option value="2030">2030</option>
588: <option value="2031">2031</option>
589: <option value="2032">2032</option>
590: <option value="2033">2033</option>
591: <option value="2034">2034</option>
592: <option value="2035">2035</option>
593: <option value="2036">2036</option>
594: <option value="2037">2037</option>
595: <option value="2038">2038</option>
596: <option value="2039">2039</option>
597: <option value="2040">2040</option>
598: <option value="2041">2041</option>
599: <option value="2042">2042</option>
600: <option value="2043">2043</option>
601: <option value="2044">2044</option>
602: <option value="2045">2045</option>
603: <option value="2046">2046</option>
604: <option value="2047">2047</option>
605: <option value="2048">2048</option>
606: <option value="2049">2049</option>
607: <option value="2050">2050</option>
608: <option value="2051">2051</option>
609: </select>
610: END
611: $year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear);
612: return "$month$day$year";
613: }
614:
615: sub selectbox {
616: my ($title,$name,$value,%options)=@_;
617: my $uctitle=uc($title);
618: my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
619: "</b></font><br />".'<select name="'.$name.'">';
620: map {
621: $selout.='<option value=\''.$_.'\'';
622: if ($_ eq $value) { $selout.=' selected'; }
623: $selout.='>'.$options{$_}.'</option>';
624: } sort keys %options;
625: return $selout.'</select>';
626: }
627:
628: # ----------------------------------------------- Performing an advanced search
629: sub advancedsearch {
630: my ($r,$envhash)=@_;
631: my %ENV=%{$envhash};
632:
633: my $fillflag=0;
634: # Clean up fields for safety
635: for my $field ('title','author','subject','keywords','url','version',
636: 'creationdatestart_month','creationdatestart_day',
637: 'creationdatestart_year','creationdateend_month',
638: 'creationdateend_day','creationdateend_year',
639: 'lastrevisiondatestart_month','lastrevisiondatestart_day',
640: 'lastrevisiondatestart_year','lastrevisiondateend_month',
641: 'lastrevisiondateend_day','lastrevisiondateend_year',
642: 'notes','abstract','mime','language','owner',
643: 'custommetadata','customshow') {
644: $ENV{"form.$field"}=~s/[^\w\s\(\)\=\-\"\']//g;
645: }
646:
647: # Check to see if enough information was filled in
648: for my $field ('title','author','subject','keywords','url','version',
649: 'notes','abstract','mime','language','owner',
650: 'custommetadata') {
651: if (&filled($ENV{"form.$field"})) {
652: $fillflag++;
653: }
654: }
655: unless ($fillflag) {
656: &output_blank_field_error($r);
657: return OK;
658: }
659:
660:
661: # Turn the form input into a SQL-based query
662: my $query='';
663:
664: my @queries;
665: # Evaluate logical expression AND/OR/NOT phrase fields.
666: foreach my $field ('title','author','subject','notes','abstract','url',
667: 'keywords','version','owner') {
668: if ($ENV{'form.'.$field}) {
669: push @queries,&build_SQL_query($field,$ENV{'form.'.$field});
670: }
671: }
672: # Evaluate option lists
673: if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
674: push @queries,"(language like \"$ENV{'form.language'}\")";
675: }
676: if ($ENV{'form.mime'} and $ENV{'form.mime'} ne 'any') {
677: push @queries,"(mime like \"$ENV{'form.mime'}\")";
678: }
679: if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
680: push @queries,"(copyright like \"$ENV{'form.copyright'}\")";
681: }
682: # Evaluate date windows
683: my $datequery=&build_date_queries(
684: $ENV{'form.creationdatestart_month'},
685: $ENV{'form.creationdatestart_day'},
686: $ENV{'form.creationdatestart_year'},
687: $ENV{'form.creationdateend_month'},
688: $ENV{'form.creationdateend_day'},
689: $ENV{'form.creationdateend_year'},
690: $ENV{'form.lastrevisiondatestart_month'},
691: $ENV{'form.lastrevisiondatestart_day'},
692: $ENV{'form.lastrevisiondatestart_year'},
693: $ENV{'form.lastrevisiondateend_month'},
694: $ENV{'form.lastrevisiondateend_day'},
695: $ENV{'form.lastrevisiondateend_year'},
696: );
697: # Test to see if date windows are legitimate
698: if ($datequery=~/^Incorrect/) {
699: &output_date_error($r,$datequery);
700: return OK;
701: }
702: elsif ($datequery) {
703: push @queries,$datequery;
704: }
705:
706: # Process form information for custom metadata querying
707: my $customquery='';
708: if ($ENV{'form.custommetadata'}) {
709: $customquery=&build_custommetadata_query('custommetadata',
710: $ENV{'form.custommetadata'});
711: }
712: my $customshow='';
713: if ($ENV{'form.customshow'}) {
714: $customshow=$ENV{'form.customshow'};
715: $customshow=~s/[^\w\s]//g;
716: my @fields=split(/\s+/,$customshow);
717: $customshow=join(" ",@fields);
718: }
719: # Send query statements over the network to be processed by either the SQL
720: # database or a recursive scheme of 'grep'-like actions (for custom
721: # metadata).
722: if (@queries) {
723: $query=join(" AND ",@queries);
724: $query="select * from metadata where $query";
725: my $reply; # reply hash reference
726: unless ($customquery or $customshow) {
727: $reply=&Apache::lonnet::metadata_query($query);
728: }
729: else {
730: $reply=&Apache::lonnet::metadata_query($query,
731: $customquery,$customshow);
732: }
733: &output_results('Advanced',$r,$envhash,$customquery,$reply);
734: }
735: elsif ($customquery) {
736: my $reply; # reply hash reference
737: $reply=&Apache::lonnet::metadata_query('',
738: $customquery,$customshow);
739: &output_results('Advanced',$r,$envhash,$customquery,$reply);
740: }
741: # should not get to this point
742: return 'Error. Should not have gone to this point.';
743: }
744:
745: # --------------------------------------------------- Performing a basic search
746: sub basicsearch {
747: my ($r,$envhash)=@_;
748: my %ENV=%{$envhash};
749: # Clean up fields for safety
750: for my $field ('basicexp') {
751: $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;
752: }
753:
754: # Check to see if enough is filled in
755: unless (&filled($ENV{'form.basicexp'})) {
756: &output_blank_field_error($r);
757: return OK;
758: }
759:
760: # Build SQL query string based on form page
761: my $query='';
762: my $concatarg=join('," ",',
763: ('title', 'author', 'subject', 'notes', 'abstract'));
764: $concatarg='title' if $ENV{'form.titleonly'};
765:
766: $query=&build_SQL_query('concat('.$concatarg.')',$ENV{'form.'.'basicexp'});
767:
768: # Get reply (either a hash reference to filehandles or bad connection)
769: my $reply=&Apache::lonnet::metadata_query('select * from metadata where '.$query);
770:
771: # Output search results
772:
773: &output_results('Basic',$r,$envhash,$query,$reply);
774:
775: return OK;
776: }
777:
778: # ------------------------------------------------------------- build_SQL_query
779: sub build_SQL_query {
780: my ($field_name,$logic_statement)=@_;
781: my $q=new Text::Query('abc',
782: -parse => 'Text::Query::ParseAdvanced',
783: -build => 'Text::Query::Build');
784: $q->prepare($logic_statement);
785: my $matchexp=${$q}{'matchexp'}; chomp $matchexp;
786: my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);
787: return $sql_query;
788: }
789:
790: # ------------------------------------------------- build custom metadata query
791: sub build_custommetadata_query {
792: my ($field_name,$logic_statement)=@_;
793: my $q=new Text::Query('abc',
794: -parse => 'Text::Query::ParseAdvanced',
795: -build => 'Text::Query::BuildAdvancedString');
796: $q->prepare($logic_statement);
797: my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
798: # quick fix to change literal into xml tag-matching
799: # will eventually have to write a separate builder module
800: my $oldmatchexp=$matchexp;
801: $matchexp=~s/(\w+)\\\=([\w\\\+]+)/\\\<$1\\\>\[\^\\\<\]\*$2\[\^\\\<\]\*\\\<\\\/$1\\\>/g;
802: return $matchexp;
803: }
804:
805: # - Recursively parse a reverse notation expression into a SQL query expression
806: sub recursive_SQL_query_build {
807: my ($dkey,$pattern)=@_;
808: my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
809: return $pattern unless @matches;
810: foreach my $match (@matches) {
811: $match=~/\[ (\w+)\s(.*) \]/;
812: my ($key,$value)=($1,$2);
813: my $replacement='';
814: if ($key eq 'literal') {
815: $replacement="($dkey like \"\%$value\%\")";
816: }
817: elsif ($key eq 'not') {
818: $value=~s/like/not like/;
819: # $replacement="($dkey not like $value)";
820: $replacement="$value";
821: }
822: elsif ($key eq 'and') {
823: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
824: $replacement="($1 AND $2)";
825: }
826: elsif ($key eq 'or') {
827: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
828: $replacement="($1 OR $2)";
829: }
830: substr($pattern,
831: index($pattern,$match),
832: length($match),
833: $replacement
834: );
835: }
836: &recursive_SQL_query_build($dkey,$pattern);
837: }
838:
839: # ------------------------------------------------------------ Build date query
840: sub build_date_queries {
841: my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,
842: $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;
843: my @queries;
844: if ($cmonth1 or $cday1 or $cyear1 or $cmonth2 or $cday2 or $cyear2) {
845: unless ($cmonth1 and $cday1 and $cyear1 and
846: $cmonth2 and $cday2 and $cyear2) {
847: return "Incorrect entry for the creation date. You must specify ".
848: "a starting month, day, and year and an ending month, ".
849: "day, and year.";
850: }
851: my $cnumeric1=sprintf("%d%2d%2d",$cyear1,$cmonth1,$cday1);
852: $cnumeric1+=0;
853: my $cnumeric2=sprintf("%d%2d%2d",$cyear2,$cmonth2,$cday2);
854: $cnumeric2+=0;
855: if ($cnumeric1>$cnumeric2) {
856: return "Incorrect entry for the creation date. The starting ".
857: "date must occur before the ending date.";
858: }
859: my $cquery="(creationdate BETWEEN '$cyear1-$cmonth1-$cday1' AND '".
860: "$cyear2-$cmonth2-$cday2 23:59:59')";
861: push @queries,$cquery;
862: }
863: if ($lmonth1 or $lday1 or $lyear1 or $lmonth2 or $lday2 or $lyear2) {
864: unless ($lmonth1 and $lday1 and $lyear1 and
865: $lmonth2 and $lday2 and $lyear2) {
866: return "Incorrect entry for the last revision date. You must ".
867: "specify a starting month, day, and year and an ending ".
868: "month, day, and year.";
869: }
870: my $lnumeric1=sprintf("%d%2d%2d",$lyear1,$lmonth1,$lday1);
871: $lnumeric1+=0;
872: my $lnumeric2=sprintf("%d%2d%2d",$lyear2,$lmonth2,$lday2);
873: $lnumeric2+=0;
874: if ($lnumeric1>$lnumeric2) {
875: return "Incorrect entry for the last revision date. The ".
876: "starting date must occur before the ending date.";
877: }
878: my $lquery="(lastrevisiondate BETWEEN '$lyear1-$lmonth1-$lday1' AND '".
879: "$lyear2-$lmonth2-$lday2 23:59:59')";
880: push @queries,$lquery;
881: }
882: if (@queries) {
883: return join(" AND ",@queries);
884: }
885: return '';
886: }
887:
888: # ----------------------------- format and output results based on a reply list
889: # There are two windows that this function writes to. The main search
890: # window ("srch") has a listing of the results. A secondary window ("popwin")
891: # gives the status of the network search (time elapsed, number of machines
892: # contacted, etc.)
893: sub output_results {
894: my ($mode,$r,$envhash,$query,$replyref)=@_;
895: my %ENV=%{$envhash};
896: my %rhash=%{$replyref};
897: my $compiledresult='';
898: my $timeremain=30;
899: my $elapsetime=0;
900: my $resultflag=0;
901: my $tflag=1;
902:
903: # make query information persistent to allow for subsequent revision
904: my $persistent=&make_persistent();
905:
906: # output beginning of search page
907: $r->print(<<BEGINNING);
908: <html>
909: <head>
910: <title>The LearningOnline Network with CAPA</title>
911: BEGINNING
912:
913: # conditional output of script functions dependent on the mode in
914: # which the search was invoked
915: $r->print(<<SCRIPT) if $ENV{'form.catalogmode'} eq 'interactive';
916: <script type="text/javascript">
917: function select_data(title,url) {
918: changeTitle(title);
919: changeURL(url);
920: self.close();
921: }
922: function changeTitle(val) {
923: if (opener.inf.document.forms.resinfo.elements.t) {
924: opener.inf.document.forms.resinfo.elements.t.value=val;
925: }
926: }
927: function changeURL(val) {
928: if (opener.inf.document.forms.resinfo.elements.u) {
929: opener.inf.document.forms.resinfo.elements.u.value=val;
930: }
931: }
932: </script>
933: SCRIPT
934: $r->print(<<SCRIPT) if $ENV{'form.catalogmode'} eq 'groupsearch';
935: <script type="text/javascript">
936: function select_data(title,url) {
937: alert('DEBUG: Should be storing '+title+' and '+url);
938: }
939: function queue(val) {
940: if (eval("document.forms."+val+".filelink.checked")) {
941: document.forms.results.acts.value+='1a'+val+'b';
942: }
943: else {
944: document.forms.results.acts.value+='0a'+val+'b';
945: }
946: }
947: function select_group() {
948: alert('DEBUG: Should be moving on to group sorting stage'+' acts');
949: }
950: </script>
951: SCRIPT
952: $r->print(<<SCRIPT);
953: <script type="text/javascript">
954: function displayinfo(val) {
955: popwin.document.forms.popremain.sdetails.value=val;
956: }
957: function openhelp(val) {
958: openhelpwin=open('/adm/help/searchcat.html','helpscreen',
959: 'scrollbars=1,width=400,height=300');
960: openhelpwin.focus();
961: }
962: </script>
963: SCRIPT
964: $r->rflush();
965:
966: # begin showing the cataloged results
967: $r->print(<<CATALOGBEGIN);
968: </head>
969: <body bgcolor="#ffffff">
970: <img align=right src=/adm/lonIcons/lonlogos.gif>
971: <h1>Search Catalog</h1>
972: CATALOGBEGIN
973: $r->print(<<CATALOGCONTROLS);
974: <form name='results' method="post" action="/adm/searchcat">
975: <input type='hidden' name='acts' value='' />
976: <input type='button' value='Revise search request'
977: onClick='this.form.submit();' />
978: $importbutton
979: $closebutton
980: $persistent
981: <hr />
982: <h3>Search Query</h3>
983: CATALOGCONTROLS
984: if ($mode eq 'Basic') {
985: $r->print(<<RESULTS);
986: <p>
987: <b>Basic search:</b> $ENV{'form.basicexp'}
988: </p>
989: RESULTS
990: }
991: elsif ($mode eq 'Advanced') {
992: $r->print(<<RESULTS);
993: <p>
994: <b>Advanced search</b>
995: $query
996: </p>
997: RESULTS
998: }
999: $r->print('<h3>Search Results</h3>');
1000: $r->rflush();
1001: my $servernum=(keys %rhash)+0;
1002:
1003: # define server grid (shows status of multiple machines)
1004: my $hcinit;
1005: my $grid="'<br />'+";
1006: $grid.="\n";
1007: my $sn=1;
1008: for my $sk (sort keys %rhash) {
1009: # '<a href="
1010: $grid.="'<a href=\"";
1011: # javascript:displayinfo('+
1012: $grid.="javascript:opener.displayinfo('+";
1013: # "'"+'key
1014: $grid.="\"'\"+'";
1015: $grid.=$sk;
1016: my $hc;
1017: if ($rhash{$sk} eq 'con_lost') {
1018: $hc="!!!BAD CONNECTION, CONTACT SYSTEM ADMINISTRATOR!!!";
1019: }
1020: else {
1021: $hc="'+\"'\"+\"+hc['$sk']+\"+\"'\"+'";
1022: $hcinit.="hc[\"$sk\"]=\"not yet connected...\";";
1023: }
1024: $grid.=" hitcount=".$hc;
1025: $grid.=" domain=".$hostdomains{$sk};
1026: $grid.=" IP=".$hostips{$sk};
1027: # '+"'"+'">'+
1028: $grid.="'+\"'\"+')\">'+";
1029: $grid.="\n";
1030: $grid.="'<img border=\"0\" name=\"img".$sn."\"".
1031: " src=\"/adm/lonIcons/srvnull.gif\" alt=\"".$sk."\" /></a>'+\n";
1032: $grid.="'<br />'+\n" unless $sn%10;
1033: $sn++;
1034: }
1035: $r->print(<<ENDPOP);
1036: <script type="text/javascript">
1037: popwin=open('','popwin','scrollbars=1,width=400,height=200');
1038: popwin.focus();
1039: popwin.document.writeln('<'+'html>');
1040: popwin.document.writeln('<'+'head>');
1041: popwin.document.writeln('<'+'script>');
1042: popwin.document.writeln('hc=new Array();$hcinit');
1043: popwin.document.writeln('<'+'/script>');
1044: popwin.document.writeln('<'+'/head>'+
1045: '<'+'body bgcolor="#FFFFFF">'+
1046: '<'+'image name="whirly" align="right" src="/adm/lonIcons/'+
1047: 'lonanim.gif" '+
1048: 'alt="animated logo" />'+
1049: '<'+'h3>Search Results Progress<'+'/h3>'+
1050: '<'+'form name="popremain">'+
1051: '<'+'tt>'+
1052: '<'+'br clear="all"/><i>PLEASE BE PATIENT</i>'+
1053: '<'+'br />SCANNING $servernum SERVERS'+
1054: '<'+'br clear="all" />Number of record hits found '+
1055: '<'+'input type="text" size="10" name="numhits"'+
1056: ' value="0" />'+
1057: '<'+'br clear="all" />Time elapsed '+
1058: '<'+'input type="text" size="10" name="elapsetime"'+
1059: ' value="0" />'+
1060: '<'+'br />'+
1061: 'SERVER GRID (click on any cell for details)'+
1062: $grid
1063: '<'+'br />'+
1064: 'Server details '+
1065: '<'+'input type="text" size="25" name="sdetails"'+
1066: ' value="" />'+
1067: '<'+'br />'+
1068: ' <'+'input type="button" name="button"'+
1069: ' value="abort search and view current results" '+
1070: ' />'+
1071: ' <'+'input type="button" name="button"'+
1072: ' value="help" onClick="javascript:opener.openhelp()" />'+
1073: '<'+'/tt>'+
1074: '<'+'/form>'+
1075: '<'+'/body><'+'/html>');
1076: popwin.document.close();
1077: </script>
1078: ENDPOP
1079: $r->rflush();
1080:
1081: my $servercount=0;
1082: $sn=0;
1083: my $hitcountsum=0;
1084: foreach my $rkey (sort keys %rhash) {
1085: $sn++;
1086: $servercount++;
1087: $tflag=1;
1088: $compiledresult='';
1089: my $hostname=$rkey;
1090: my $reply=$rhash{$rkey};
1091: my @results;
1092:
1093: my $replyfile='';
1094:
1095: if ($reply eq 'con_lost') {
1096: $r->print('<script type="text/javascript">popwin.document.img'.
1097: $sn.'.'.
1098: 'src="/adm/lonIcons/srvbad.gif";</script>'.
1099: "\n");
1100: $r->rflush();
1101: }
1102: else {
1103: $reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting
1104: $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;
1105: $reply=~/(.*?)\_/;
1106: {
1107: my $temp=0;
1108: WLOOP: while (1) {
1109: if (-e $replyfile && $tflag) {
1110: $r->print('<script type="text/javascript">'.
1111: 'popwin.document.img'.$sn.'.'.
1112: 'src="/adm/lonIcons/srvhalf.gif";</script>'.
1113: "\n");
1114: $r->rflush();
1115: $r->print('<script type="text/javascript">'.
1116: 'popwin.hc["'.$rkey.'"]='.
1117: '"still transferring..."'.';</script>'.
1118: "\n");
1119: $r->rflush();
1120: $tflag=0;
1121: }
1122: last WLOOP if $temp>5;
1123: if (-e "$replyfile.end") {
1124: if (-s $replyfile) {
1125: $r->print('<script type="text/javascript">'.
1126: 'popwin.document.img'.$sn.'.'.
1127: 'src="/adm/lonIcons/srvgood.gif";'.
1128: '</script>'."\n");
1129: $r->rflush();
1130: my $fh=Apache::File->new($replyfile) or
1131: ($r->print('ERROR: file '.
1132: $replyfile.' cannot be opened') and
1133: return OK);
1134: @results=<$fh> if $fh;
1135: $hitcount{$rkey}=@results+0;
1136: $r->print('<script type="text/javascript">'.
1137: 'popwin.hc["'.$rkey.'"]='.
1138: $hitcount{$rkey}.';</script>'.
1139: "\n");
1140: $r->rflush();
1141: $hitcountsum+=$hitcount{$rkey};
1142: $r->print('<script type="text/javascript">'.
1143: 'popwin.document.forms.popremain.'.
1144: 'numhits.value='.$hitcountsum.
1145: ';</script>'.
1146: "\n");
1147: $r->rflush();
1148: }
1149: else {
1150: $r->print('<script type="text/javascript">'.
1151: 'popwin.document.img'.$sn.'.'.
1152: 'src="/adm/lonIcons/srvempty.gif";'.
1153: '</script>'.
1154: "\n");
1155: $r->rflush();
1156: $r->print('<script type="text/javascript">'.
1157: 'popwin.hc["'.$rkey.'"]=0'.
1158: ';</script>'.
1159: "\n");
1160: $r->rflush();
1161: }
1162: last WLOOP;
1163: }
1164: last WLOOP unless $timeremain;
1165: sleep 1;
1166: $timeremain--;
1167: $elapsetime++;
1168: $r->print('<script type="text/javascript">'.
1169: 'popwin.document.popremain.elapsetime.'.
1170: 'value="'.$elapsetime.'";</script>'."\n");
1171: $r->rflush();
1172: $temp++;
1173: }
1174: }
1175: $r->print('<script type="text/javascript">'.
1176: 'popwin.document.whirly.'.
1177: 'src="'.'/adm/lonIcons/lonanimend.gif'.
1178: '";</script>'."\n");
1179: $r->rflush();
1180: }
1181: my $customshow='';
1182: my $extrashow='';
1183: my @customfields;
1184: if ($ENV{'form.customshow'}) {
1185: $customshow=$ENV{'form.customshow'};
1186: $customshow=~s/[^\w\s]//g;
1187: my @fields=map {"<font color=\"#008000\">$_:</font><!-- $_ -->"}
1188: split(/\s+/,$customshow);
1189: @customfields=split(/\s+/,$customshow);
1190: if ($customshow) {
1191: $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
1192: }
1193: }
1194: my $customdata='';
1195: my %customhash;
1196: foreach my $result (@results) {
1197: if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
1198: my $tmp=$result;
1199: $tmp=~s/^custom\=//;
1200: my ($k,$v)=map {&Apache::lonnet::unescape($_);
1201: } split(/\,/,$tmp);
1202: $customhash{$k}=$v;
1203: }
1204: }
1205: foreach my $result (@results) {
1206: next if $result=~/^custom\=/;
1207: chomp $result;
1208: next unless $result;
1209: my @fields=map
1210: {&Apache::lonnet::unescape($_)}
1211: (split(/\,/,$result));
1212: my ($title,$author,$subject,$url,$keywords,$version,
1213: $notes,$abstract,$mime,$lang,
1214: $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;
1215: my $shortabstract=$abstract;
1216: $shortabstract=substr($abstract,0,200) if length($abstract)>200;
1217: $fields[7]=$shortabstract;
1218: my $extrashow2=$extrashow;
1219: if ($extrashow) {
1220: foreach my $field (@customfields) {
1221: my $value='';
1222: if ($customhash{$url}=~/\<${field}[^\>]*\>(.*?)\<\/${field}[^\>]*\>/s) {
1223: $value=$1;
1224: }
1225: $extrashow2=~s/\<\!\-\- $field \-\-\>/ $value/g;
1226: }
1227: }
1228:
1229: $compiledresult.=<<END if $compiledresult or $servercount!=$servernum;
1230: <hr align='left' width='200' noshade />
1231: END
1232: $compiledresult.=<<END;
1233: <p>
1234: END
1235: $compiledresult.=<<END if $ENV{'form.catalogmode'} eq 'interactive';
1236: <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
1237: onClick="javascript:select_data('$title','$url')">
1238: </font>
1239: <br />
1240: END
1241: $compiledresult.=<<END if $ENV{'form.catalogmode'} eq 'groupsearch';
1242: <font size='-1'><input type="checkbox" name="returnvalues" value="SELECT"
1243: onClick="javascript:queue($fnum)" />
1244: </font>
1245: <input type="hidden" name="title$fnum" value="$title" />
1246: <input type="hidden" name="url$fnum" value="$url" />
1247: <br />
1248: END
1249: my $httphost=$ENV{'HTTP_HOST'};
1250:
1251: my $viewselect;
1252: if ($mode eq 'Basic') {
1253: $viewselect=$ENV{'form.basicviewselect'};
1254: }
1255: elsif ($mode eq 'Advanced') {
1256: $viewselect=$ENV{'form.advancedviewselect'};
1257: }
1258:
1259: if ($viewselect eq 'Detailed Citation View') {
1260: $compiledresult.=&detailed_citation_view(@fields,
1261: $hostname,$httphost,
1262: $extrashow2);
1263: }
1264: elsif ($viewselect eq 'Summary View') {
1265: $compiledresult.=&summary_view(@fields,$hostname,$httphost,
1266: $extrashow2);
1267: }
1268: elsif ($viewselect eq 'Fielded Format') {
1269: $compiledresult.=&fielded_format_view(@fields,$hostname,
1270: $httphost,$extrashow2);
1271: }
1272: elsif ($viewselect eq 'XML/SGML') {
1273: $compiledresult.=&xml_sgml_view(@fields,$hostname,$httphost,
1274: $extrashow2);
1275: }
1276:
1277: }
1278:
1279: if ($compiledresult) {
1280: $resultflag=1;
1281: }
1282:
1283: $r->print(<<RESULTS);
1284: $compiledresult
1285: RESULTS
1286: my $percent=sprintf('%3.0f',($servercount/$servernum*100));
1287: }
1288: unless ($resultflag) {
1289: $r->print("\nThere were no results that matched your query\n");
1290: }
1291: # $r->print('<script type="text/javascript">'.'popwin.close()</script>'."\n"); $r->rflush();
1292: $r->print(<<RESULTS);
1293: </body>
1294: </html>
1295: RESULTS
1296: }
1297:
1298: # ------------------------------------------------------ Detailed Citation View
1299: sub detailed_citation_view {
1300: my ($title,$author,$subject,$url,$keywords,$version,
1301: $notes,$shortabstract,$mime,$lang,
1302: $creationdate,$lastrevisiondate,$owner,$copyright,
1303: $hostname,$httphost,$extrashow)=@_;
1304: my $result=<<END;
1305: <i>$owner</i>, last revised $lastrevisiondate
1306: <h3><A HREF="http://$httphost$url" TARGET='search_preview'>$title</A></h3>
1307: <h3>$author</h3>
1308: </p>
1309: <p>
1310: <b>Subject:</b> $subject<br />
1311: <b>Keyword(s):</b> $keywords<br />
1312: <b>Notes:</b> $notes<br />
1313: <b>MIME Type:</b> $mimetag{$mime}<br />
1314: <b>Language:</b> $language{$lang}<br />
1315: <b>Copyright/Distribution:</b> $cprtag{$copyright}<br />
1316: </p>
1317: $extrashow
1318: <p>
1319: $shortabstract
1320: </p>
1321: END
1322: return $result;
1323: }
1324:
1325: # ---------------------------------------------------------------- Summary View
1326: sub summary_view {
1327: my ($title,$author,$subject,$url,$keywords,$version,
1328: $notes,$shortabstract,$mime,$lang,
1329: $creationdate,$lastrevisiondate,$owner,$copyright,
1330: $hostname,$httphost,$extrashow)=@_;
1331: my $result=<<END;
1332: <a href="http://$httphost$url" TARGET='search_preview'>$author</a><br />
1333: $title<br />
1334: $owner -- $lastrevisiondate<br />
1335: $cprtag{$copyright}<br />
1336: $extrashow
1337: </p>
1338: END
1339: return $result;
1340: }
1341:
1342: # -------------------------------------------------------------- Fielded Format
1343: sub fielded_format_view {
1344: my ($title,$author,$subject,$url,$keywords,$version,
1345: $notes,$shortabstract,$mime,$lang,
1346: $creationdate,$lastrevisiondate,$owner,$copyright,
1347: $hostname,$httphost,$extrashow)=@_;
1348: my $result=<<END;
1349: <b>URL: </b> <A HREF="http://$httphost$url" TARGET='search_preview'>$url</A>
1350: <br />
1351: <b>Title:</b> $title<br />
1352: <b>Author(s):</b> $author<br />
1353: <b>Subject:</b> $subject<br />
1354: <b>Keyword(s):</b> $keywords<br />
1355: <b>Notes:</b> $notes<br />
1356: <b>MIME Type:</b> $mimetag{$mime}<br />
1357: <b>Language:</b> $language{$lang}<br />
1358: <b>Creation Date:</b> $creationdate<br />
1359: <b>Last Revision Date:</b> $lastrevisiondate<br />
1360: <b>Publisher/Owner:</b> $owner<br />
1361: <b>Copyright/Distribution:</b> $cprtag{$copyright}<br />
1362: <b>Repository Location:</b> $hostname<br />
1363: <b>Abstract:</b> $shortabstract<br />
1364: $extrashow
1365: </p>
1366: END
1367: return $result;
1368: }
1369:
1370: # -------------------------------------------------------------------- XML/SGML
1371: sub xml_sgml_view {
1372: my ($title,$author,$subject,$url,$keywords,$version,
1373: $notes,$shortabstract,$mime,$lang,
1374: $creationdate,$lastrevisiondate,$owner,$copyright,
1375: $hostname,$httphost,$extrashow)=@_;
1376: my $result=<<END;
1377: <pre>
1378: <LonCapaResource>
1379: <url>$url</url>
1380: <title>$title</title>
1381: <author>$author</author>
1382: <subject>$subject</subject>
1383: <keywords>$keywords</keywords>
1384: <notes>$notes</notes>
1385: <mimeInfo>
1386: <mime>$mime</mime>
1387: <mimetag>$mimetag{$mime}</mimetag>
1388: </mimeInfo>
1389: <languageInfo>
1390: <language>$lang</language>
1391: <languagetag>$language{$lang}</languagetag>
1392: </languageInfo>
1393: <creationdate>$creationdate</creationdate>
1394: <lastrevisiondate>$lastrevisiondate</lastrevisiondate>
1395: <owner>$owner</owner>
1396: <copyrightInfo>
1397: <copyright>$copyright</copyright>
1398: <copyrighttag>$cprtag{$copyright}</copyrighttag>
1399: </copyrightInfo>
1400: <repositoryLocation>$hostname</repositoryLocation>
1401: <shortabstract>$shortabstract</shortabstract>
1402: </LonCapaResource>
1403: </pre>
1404: $extrashow
1405: END
1406: return $result;
1407: }
1408:
1409: # ---------------------------------------------------- see if a field is filled
1410: sub filled {
1411: my ($field)=@_;
1412: if ($field=~/\S/ && $field ne 'any') {
1413: return 1;
1414: }
1415: else {
1416: return 0;
1417: }
1418: }
1419:
1420: # ---------------- Message to output when there are not enough fields filled in
1421: sub output_blank_field_error {
1422: my ($r)=@_;
1423: # make query information persistent to allow for subsequent revision
1424: my $persistent=&make_persistent();
1425:
1426: $r->print(<<BEGINNING);
1427: <html>
1428: <head>
1429: <title>The LearningOnline Network with CAPA</title>
1430: BEGINNING
1431: $r->print(<<RESULTS);
1432: </head>
1433: <body bgcolor="#ffffff">
1434: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
1435: <h1>Search Catalog</h1>
1436: <form method="post" action="/adm/searchcat">
1437: $persistent
1438: <input type='button' value='Revise search request'
1439: onClick='this.form.submit();' />
1440: $closebutton
1441: <hr />
1442: <h3>Helpful Message</h3>
1443: <p>
1444: Incorrect search query due to blank entry fields.
1445: You need to fill in the relevant
1446: fields on the search page in order for a query to be
1447: processed.
1448: </p>
1449: </body>
1450: </html>
1451: RESULTS
1452: }
1453:
1454: # ----------------------------------------------------------- Output date error
1455: sub output_date_error {
1456: my ($r,$message)=@_;
1457: # make query information persistent to allow for subsequent revision
1458: my $persistent=&make_persistent();
1459:
1460: $r->print(<<BEGINNING);
1461: <html>
1462: <head>
1463: <title>The LearningOnline Network with CAPA</title>
1464: BEGINNING
1465: $r->print(<<RESULTS);
1466: </head>
1467: <body bgcolor="#ffffff">
1468: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
1469: <h1>Search Catalog</h1>
1470: <form method="post" action="/adm/searchcat">
1471: $persistent
1472: <input type='button' value='Revise search request'
1473: onClick='this.form.submit();' />
1474: $closebutton
1475: <hr />
1476: <h3>Helpful Message</h3>
1477: <p>
1478: $message
1479: </p>
1480: </body>
1481: </html>
1482: RESULTS
1483: }
1484:
1485: 1;
1486:
1487: __END__
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