2 ** $Id: pz2.js,v 1.49 2007-07-26 13:47:52 jakub Exp $
3 ** pz2.js - pazpar2's javascript client library.
6 //since explorer is flawed
8 window.Node = new Object();
10 Node.ATTRIBUTE_NODE = 2;
12 Node.CDATA_SECTION_NODE = 4;
13 Node.ENTITY_REFERENCE_NODE = 5;
15 Node.PROCESSING_INSTRUCTION_NODE = 7;
16 Node.COMMENT_NODE = 8;
17 Node.DOCUMENT_NODE = 9;
18 Node.DOCUMENT_TYPE_NODE = 10;
19 Node.DOCUMENT_FRAGMENT_NODE = 11;
20 Node.NOTATION_NODE = 12;
23 // prevent execution of more than once
24 if(typeof window.pz2 == "undefined") {
25 window.undefined = window.undefined;
27 var pz2 = function(paramArray) {
31 //supported pazpar2's protocol version
32 __myself.suppProtoVer = '1';
33 __myself.pz2String = paramArray.pazpar2path || "/pazpar2/search.pz2";
34 __myself.stylesheet = paramArray.detailstylesheet || null;
35 __myself.useSessions = true;
36 if (paramArray.usesessions != undefined) {
37 __myself.useSessions = paramArray.usesessions;
40 //load stylesheet if required in async mode
41 if( __myself.stylesheet ) {
42 var request = new pzHttpRequest( __myself.stylesheet );
43 request.get( {}, function ( doc ) { __myself.xslDoc = doc; } );
46 // at least one callback required
48 throw new Error("An array with parameters has to be suplied when instantiating a class");
50 __myself.errorHandler = paramArray.errorhandler || null;
53 __myself.statCallback = paramArray.onstat || null;
54 __myself.showCallback = paramArray.onshow || null;
55 __myself.termlistCallback = paramArray.onterm || null;
56 __myself.recordCallback = paramArray.onrecord || null;
57 __myself.bytargetCallback = paramArray.onbytarget || null;
58 __myself.resetCallback = paramArray.onreset || null;
61 __myself.termKeys = paramArray.termlist || "subject";
63 // some configurational stuff
64 __myself.keepAlive = 50000;
66 __myself.sessionID = null;
67 __myself.initStatusOK = false;
68 __myself.pingStatusOK = false;
69 __myself.searchStatusOK = false;
71 if ( paramArray.keepAlive < __myself.keepAlive )
72 __myself.keepAlive = paramArray.keepAlive;
75 __myself.currentSort = "relevance";
77 __myself.currentStart = 0;
78 __myself.currentNum = 20;
80 // last full record retrieved
81 __myself.currRecID = null;
83 __myself.currQuery = null;
86 __myself.statTime = paramArray.stattime || 1000;
87 __myself.statTimer = null;
88 __myself.termTime = paramArray.termtime || 1000;
89 __myself.termTimer = null;
90 __myself.showTime = paramArray.showtime || 1000;
91 __myself.showTimer = null;
92 __myself.showFastCount = 4;
93 __myself.bytargetTime = paramArray.bytargettime || 1000;
94 __myself.bytargetTimer = null;
96 // counters for each command and applied delay
97 __myself.dumpFactor = 500;
98 __myself.showCounter = 0;
99 __myself.termCounter = 0;
100 __myself.statCounter = 0;
101 __myself.bytargetCounter = 0;
103 // active clients, updated by stat and show
104 // might be an issue since bytarget will poll accordingly
105 __myself.activeClients = 1;
107 // auto init session?
108 if (paramArray.autoInit !== false)
115 clearTimeout(__myself.statTimer);
116 clearTimeout(__myself.showTimer);
117 clearTimeout(__myself.termTimer);
118 clearTimeout(__myself.bytargetTimer);
123 __myself.sessionID = null;
124 __myself.initStatusOK = false;
125 __myself.pingStatusOK = false;
126 __myself.searchStatusOK = false;
130 if ( __myself.resetCallback )
131 __myself.resetCallback();
133 init: function ( sessionId )
137 if ( sessionId != undefined ) {
138 __myself.initStatusOK = true;
139 __myself.sessionID = sessionId;
141 } else if (__myself.useSessions) {
142 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
144 { "command": "init" },
146 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
147 if ( data.getElementsByTagName("protocol")[0].childNodes[0].nodeValue != __myself.suppProtoVer )
148 throw new Error("Server's protocol not supported by the client");
149 __myself.initStatusOK = true;
150 __myself.sessionID = data.getElementsByTagName("session")[0].childNodes[0].nodeValue;
151 setTimeout("__myself.ping()", __myself.keepAlive);
154 // if it gets here the http return code was 200 (pz2 errors are 417)
155 // but the response was invalid, it should never occur
156 setTimeout("__myself.init()", 1000);
160 __myself.initStatusOK = true;
163 // no need to ping explicitly
166 if( !__myself.initStatusOK )
168 // session is not initialized code here
169 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
171 { "command": "ping", "session": __myself.sessionID },
173 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
174 __myself.pingStatusOK = true;
175 setTimeout("__myself.ping()", __myself.keepAlive);
178 // if it gets here the http return code was 200 (pz2 errors are 417)
179 // but the response was invalid, it should never occur
180 setTimeout("__myself.ping()", 1000);
184 search: function (query, num, sort, filter)
186 clearTimeout(__myself.statTimer);
187 clearTimeout(__myself.showTimer);
188 clearTimeout(__myself.termTimer);
189 clearTimeout(__myself.bytargetTimer);
191 __myself.showCounter = 0;
192 __myself.termCounter = 0;
193 __myself.bytargetCounter = 0;
194 __myself.statCounter = 0;
196 if( !__myself.initStatusOK )
199 if( query !== undefined )
200 __myself.currQuery = query;
202 throw new Error("You need to supply query to the search command");
204 var searchParams = { "command": "search", "query": __myself.currQuery, "session": __myself.sessionID };
206 if (filter !== undefined)
207 searchParams["filter"] = filter;
209 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
213 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
214 __myself.searchStatusOK = true;
216 __myself.show(0, num, sort);
217 if ( __myself.statCallback )
219 //__myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4);
220 if ( __myself.termlistCallback )
222 //__myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4);
223 if ( __myself.bytargetCallback )
225 //__myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4);
228 // if it gets here the http return code was 200 (pz2 errors are 417)
229 // but the response was invalid, it should never occur
230 setTimeout("__myself.search(__myself.currQuery)", 500);
236 if( !__myself.initStatusOK )
238 // if called explicitly takes precedence
239 clearTimeout(__myself.statTimer);
240 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
242 { "command": "stat", "session": __myself.sessionID },
244 if ( data.getElementsByTagName("stat") ) {
245 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
246 __myself.activeClients = activeClients;
248 "activeclients": activeClients,
249 "hits": Number( data.getElementsByTagName("hits")[0].childNodes[0].nodeValue ),
250 "records": Number( data.getElementsByTagName("records")[0].childNodes[0].nodeValue ),
251 "clients": Number( data.getElementsByTagName("clients")[0].childNodes[0].nodeValue ),
252 "initializing": Number( data.getElementsByTagName("initializing")[0].childNodes[0].nodeValue ),
253 "searching": Number( data.getElementsByTagName("searching")[0].childNodes[0].nodeValue ),
254 "presenting": Number( data.getElementsByTagName("presenting")[0].childNodes[0].nodeValue ),
255 "idle": Number( data.getElementsByTagName("idle")[0].childNodes[0].nodeValue ),
256 "failed": Number( data.getElementsByTagName("failed")[0].childNodes[0].nodeValue ),
257 "error": Number( data.getElementsByTagName("error")[0].childNodes[0].nodeValue )
260 __myself.statCounter++;
261 var delay = __myself.statTime + __myself.statCounter * __myself.dumpFactor;
262 if ( activeClients > 0 )
263 __myself.statTimer = setTimeout("__myself.stat()", delay);
265 __myself.statCallback(stat);
268 // if it gets here the http return code was 200 (pz2 errors are 417)
269 // but the response was invalid, it should never occur
270 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4);
274 show: function(start, num, sort)
276 if( !__myself.searchStatusOK )
278 // if called explicitly takes precedence
279 clearTimeout(__myself.showTimer);
281 if( sort !== undefined )
282 __myself.currentSort = sort;
283 if( start !== undefined )
284 __myself.currentStart = Number( start );
285 if( num !== undefined )
286 __myself.currentNum = Number( num );
287 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
290 { "command": "show", "session": __myself.sessionID, "start": __myself.currentStart,
291 "num": __myself.currentNum, "sort": __myself.currentSort, "block": 1 },
293 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
294 // first parse the status data send along with records
295 // this is strictly bound to the format
296 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
297 __myself.activeClients = activeClients;
299 "activeclients": activeClients,
300 "merged": Number( data.getElementsByTagName("merged")[0].childNodes[0].nodeValue ),
301 "total": Number( data.getElementsByTagName("total")[0].childNodes[0].nodeValue ),
302 "start": Number( data.getElementsByTagName("start")[0].childNodes[0].nodeValue ),
303 "num": Number( data.getElementsByTagName("num")[0].childNodes[0].nodeValue ),
306 // parse all the first-level nodes for all <hit> tags
307 var hits = data.getElementsByTagName("hit");
308 var hit = new Array();
309 for (i = 0; i < hits.length; i++) {
310 show.hits[i] = new Array();
311 show.hits[i]['location'] = new Array();
312 for ( j = 0; j < hits[i].childNodes.length; j++) {
314 if ( hits[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
315 if (hits[i].childNodes[j].nodeName == 'location') {
316 var locNode = hits[i].childNodes[j];
317 var id = locNode.getAttribute('id');
318 show.hits[i]['location'][id] = {
319 "id": locNode.getAttribute("id"),
320 "name": locNode.getAttribute("name")
324 var nodeName = hits[i].childNodes[j].nodeName;
325 var nodeText = 'ERROR'
326 if ( hits[i].childNodes[j].firstChild )
327 nodeText = hits[i].childNodes[j].firstChild.nodeValue;
328 show.hits[i][nodeName] = nodeText;
333 __myself.showCounter++;
334 var delay = __myself.showTime;
335 if (__myself.showCounter > __myself.showFastCount)
336 delay += __myself.showCounter * __myself.dumpFactor;
337 if ( activeClients > 0 )
338 __myself.showTimer = setTimeout("__myself.show()", delay);
340 __myself.showCallback(show);
343 // if it gets here the http return code was 200 (pz2 errors are 417)
344 // but the response was invalid, it should never occur
345 __myself.showTimer = setTimeout("__myself.show()", __myself.showTime / 4);
349 record: function(id,offset, params)
351 if ( params == undefined )
354 if ( params.callback != undefined ) {
355 callback = params.callback;
357 callback = __myself.recordCallback;
360 if ( params['handle'] == undefined )
363 handle = params['handle'];
365 if( !__myself.searchStatusOK && __myself.useSessions)
368 if( id !== undefined )
369 __myself.currRecID = id;
370 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
372 var recordParams = { "command": "record", "session": __myself.sessionID, "id": __myself.currRecID };
373 if (offset !== undefined) {
374 recordParams["offset"] = offset;
377 if (params.syntax != undefined) {
378 recordParams['syntax'] = params.syntax;
381 __myself.currRecOffset = offset;
386 var record = new Array();
387 record['xmlDoc'] = data;
388 if (__myself.currRecOffset !== undefined) {
389 record['offset'] = __myself.currRecOffset;
390 callback(record, handle);
391 } else if ( recordNode = data.getElementsByTagName("record")[0] ) {
392 // if stylesheet was fetched do not parse the response
393 if ( __myself.xslDoc ) {
394 record['recid'] = recordNode.getElementsByTagName("recid")[0].firstChild.nodeValue;
395 record['xslDoc'] = __myself.xslDoc;
397 for ( i = 0; i < recordNode.childNodes.length; i++) {
398 if ( recordNode.childNodes[i].nodeType == Node.ELEMENT_NODE
399 && recordNode.childNodes[i].nodeName != 'location' ) {
400 var nodeName = recordNode.childNodes[i].nodeName;
401 var nodeText = recordNode.childNodes[i].firstChild.nodeValue;
402 record[nodeName] = nodeText;
405 // the location might be empty!!
406 var locationNodes = recordNode.getElementsByTagName("location");
407 record["location"] = new Array();
408 for ( i = 0; i < locationNodes.length; i++ ) {
409 record["location"][i] = {
410 "id": locationNodes[i].getAttribute("id"),
411 "name": locationNodes[i].getAttribute("name")
414 for ( j = 0; j < locationNodes[i].childNodes.length; j++) {
415 if ( locationNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
416 var nodeName = locationNodes[i].childNodes[j].nodeName;
418 if (locationNodes[i].childNodes[j].firstChild)
419 nodeText = locationNodes[i].childNodes[j].firstChild.nodeValue;
420 record["location"][i][nodeName] = nodeText;
426 callback(record, handle);
429 // if it gets here the http return code was 200 (pz2 errors are 417)
430 // but the response was invalid, it should never occur
431 setTimeout("__myself.record(__myself.currRecID)", 500);
437 if( !__myself.searchStatusOK )
439 // if called explicitly takes precedence
440 clearTimeout(__myself.termTimer);
441 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
443 { "command": "termlist", "session": __myself.sessionID, "name": __myself.termKeys },
445 if ( data.getElementsByTagName("termlist") ) {
446 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
447 __myself.activeClients = activeClients;
448 var termList = { "activeclients": activeClients };
449 var termLists = data.getElementsByTagName("list");
451 for (i = 0; i < termLists.length; i++) {
452 var listName = termLists[i].getAttribute('name');
453 termList[listName] = new Array();
454 var terms = termLists[i].getElementsByTagName('term');
455 //for each term in the list
456 for (j = 0; j < terms.length; j++) {
458 "name": (terms[j].getElementsByTagName("name")[0].childNodes.length
459 ? terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue
461 "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue || 'ERROR'
464 var termIdNode = terms[j].getElementsByTagName("id");
465 if(terms[j].getElementsByTagName("id").length)
466 term["id"] = termIdNode[0].childNodes[0].nodeValue;
468 termList[listName][j] = term;
472 __myself.termCounter++;
473 var delay = __myself.termTime + __myself.termCounter * __myself.dumpFactor;
474 if ( activeClients > 0 )
475 __myself.termTimer = setTimeout("__myself.termlist()", delay);
477 __myself.termlistCallback(termList);
480 // if it gets here the http return code was 200 (pz2 errors are 417)
481 // but the response was invalid, it should never occur
482 __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4);
489 if( !__myself.searchStatusOK )
491 // if called explicitly takes precedence
492 clearTimeout(__myself.bytargetTimer);
493 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
495 { "command": "bytarget", "session": __myself.sessionID },
497 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
498 var targetNodes = data.getElementsByTagName("target");
499 var bytarget = new Array();
500 for ( i = 0; i < targetNodes.length; i++) {
501 bytarget[i] = new Array();
502 for( j = 0; j < targetNodes[i].childNodes.length; j++ ) {
503 if ( targetNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
504 var nodeName = targetNodes[i].childNodes[j].nodeName;
505 var nodeText = targetNodes[i].childNodes[j].firstChild.nodeValue;
506 bytarget[i][nodeName] = nodeText;
511 __myself.bytargetCounter++;
512 var delay = __myself.bytargetTime + __myself.bytargetCounter * __myself.dumpFactor;
513 if ( __myself.activeClients > 0 )
514 __myself.bytargetTimer = setTimeout("__myself.bytarget()", delay);
516 __myself.bytargetCallback(bytarget);
519 // if it gets here the http return code was 200 (pz2 errors are 417)
520 // but the response was invalid, it should never occur
521 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4);
525 // just for testing, probably shouldn't be here
526 showNext: function(page)
528 var step = page || 1;
529 __myself.show( ( step * __myself.currentNum ) + __myself.currentStart );
531 showPrev: function(page)
533 if (__myself.currentStart == 0 )
535 var step = page || 1;
536 var newStart = __myself.currentStart - (step * __myself.currentNum );
537 __myself.show( newStart > 0 ? newStart : 0 );
539 showPage: function(pageNum)
541 //var page = pageNum || 1;
542 __myself.show(pageNum * __myself.currentNum);
547 *********************************************************************************
548 ** AJAX HELPER CLASS ************************************************************
549 *********************************************************************************
551 var pzHttpRequest = function ( url, errorHandler ) {
554 this.errorHandler = errorHandler || null;
557 if ( window.XMLHttpRequest ) {
558 this.request = new XMLHttpRequest();
559 } else if ( window.ActiveXObject ) {
561 this.request = new ActiveXObject( 'Msxml2.XMLHTTP' );
563 this.request = new ActiveXObject( 'Microsoft.XMLHTTP' );
568 pzHttpRequest.prototype =
570 get: function ( params, callback )
572 this._send( 'GET', params, '', callback );
575 post: function ( params, data, callback )
577 this._send( 'POST', params, data, callback );
583 this.request.open( 'GET', this.url, this.async );
584 this.request.send('');
585 if ( this.request.status == 200 )
586 return this.request.responseXML;
589 _send: function ( type, params, data, callback )
591 this.callback = callback;
594 this.request.open( type, this._urlAppendParams(params), this.async );
595 this.request.onreadystatechange = function () {
596 context._handleResponse();
598 this.request.send(data);
601 _urlAppendParams: function (params)
603 var getUrl = this.url;
607 for (var key in el) {
608 if (el[key] != null) {
609 getUrl += sep + key + '=' + encodeURI(el[key]);
616 _handleResponse: function ()
618 if ( this.request.readyState == 4 ) {
619 if ( this.request.status == 200 ) {
620 this.callback( this.request.responseXML );
623 else if ( this.request.status == 417 ) {
624 var errMsg = this.request.responseXML.getElementsByTagName("error")[0].childNodes[0].nodeValue;
625 var errCode = this.request.responseXML.getElementsByTagName("error")[0].getAttribute("code");
627 var err = new Error(errMsg);
630 if (this.errorHandler) {
631 this.errorHandler(err);
638 var err = new Error("XMLHttpRequest error. STATUS: "
639 + this.request.status + " STATUS TEXT: "
640 + this.request.statusText );
643 if (this.errorHandler) {
644 this.errorHandler(err);
655 *********************************************************************************
656 ** XML HELPER CLASS ************************************************************
657 *********************************************************************************
662 if ( window.ActiveXObject) {
663 var DOMDoc = document;
665 var DOMDoc = Document.prototype;
668 DOMDoc.newXmlDoc = function ( root )
672 if (document.implementation && document.implementation.createDocument) {
673 doc = document.implementation.createDocument('', root, null);
674 } else if ( window.ActiveXObject ) {
675 doc = new ActiveXObject("MSXML2.DOMDocument");
676 doc.loadXML('<' + root + '/>');
678 throw new Error ('No XML support in this browser');
685 DOMDoc.parseXmlFromString = function ( xmlString )
689 if ( window.DOMParser ) {
690 var parser = new DOMParser();
691 doc = parser.parseFromString( xmlString, "text/xml");
692 } else if ( window.ActiveXObject ) {
693 doc = new ActiveXObject("MSXML2.DOMDocument");
694 doc.loadXML( xmlString );
696 throw new Error ("No XML parsing support in this browser.");
704 Element_removeFromDoc = function (DOM_Element)
706 DOM_Element.parentNode.removeChild(DOM_Element);
709 Element_emptyChildren = function (DOM_Element)
711 while( DOM_Element.firstChild ) {
712 DOM_Element.removeChild( DOM_Element.firstChild )
716 Element_appendTransformResult = function ( DOM_Element, xmlDoc, xslDoc )
718 if ( window.XSLTProcessor ) {
719 var proc = new XSLTProcessor();
720 proc.importStylesheet( xslDoc );
722 docFrag = proc.transformToFragment( xmlDoc, DOM_Element.ownerDocument );
723 DOM_Element.appendChild(docFrag);
724 } else if ( window.ActiveXObject ) {
725 DOM_Element.innerHTML = xmlDoc.transformNode( xslDoc );
727 alert( 'Unable to perform XSLT transformation in this browser' );
731 Element_appendTextNode = function (DOM_Element, tagName, textContent )
733 var node = DOM_Element.ownerDocument.createElement(tagName);
734 var text = DOM_Element.ownerDocument.createTextNode(textContent);
736 DOM_Element.appendChild(node);
737 node.appendChild(text);
742 Element_setTextContent = function ( DOM_Element, textContent )
744 if (typeof DOM_Element.textContent !== "undefined") {
745 DOM_Element.textContent = textContent;
746 } else if (typeof DOM_Element.innerText !== "undefined" ) {
747 DOM_Element.innerText = textContent;
749 throw new Error("Cannot set text content of the node, no such method.");
753 Element_getTextContent = function (DOM_Element)
755 if (DOM_Element.textContent) {
756 return DOM_Element.textContent;
757 } else if (DOM_Element.text ) {
758 return DOM_Element.text;
760 throw new Error("Cannot get text content of the node, no such method.");
765 *********************************************************************************
766 ** QUERY CLASS ******************************************************************
767 *********************************************************************************
769 var pzQuery = function()
771 this.simpleQuery = '';
772 this.singleFilter = null;
773 this.advTerms = new Array();
774 this.filterHash = new Array();
778 pzQuery.prototype = {
781 this.simpleQuery = '';
782 this.advTerms = new Array();
783 this.simpleFilter = null;
786 clearSimpleQuery: function()
788 this.simpleQuery = '';
790 addTerm: function(field, value)
792 var term = {"field": field, "value": value};
793 this.advTerms[this.numTerms] = term;
796 getTermValueByIdx: function(index)
798 return this.advTerms[index].value;
800 getTermFieldByIdx: function(index)
802 return this.advTerms[index].field;
804 /* semicolon separated list of terms for given field*/
805 getTermsByField: function(field)
808 for(var i = 0; i < this.advTerms.length; i++)
810 if( this.advTerms[i].field == field )
811 terms = terms + this.queryHas[i].value + ';';
815 addTermsFromList: function(inputString, field)
817 var inputArr = inputString.split(';');
818 for(var i=0; i < inputArr.length; i++)
820 if(inputArr[i].length < 3) continue;
821 this.advTerms[this.numTerms] = {"field": field, "value": inputArr[i] };
825 removeTermByIdx: function(index)
827 this.advTerms.splice(index, 1);
833 if( this.simpleQuery != '')
834 ccl = this.simpleQuery;
835 for(var i = 0; i < this.advTerms.length; i++)
837 if (ccl != '') ccl = ccl + ' and ';
838 ccl = ccl + this.advTerms[i].field+'="'+this.advTerms[i].value+'"';
842 addFilter: function(name, value)
844 var filter = {"name": name, "id": value };
845 this.filterHash[this.filterHash.length] = filter;
847 return this.filterHash.length - 1;
849 setFilter: function(name, value)
851 this.filterHash = new Array();
853 this.addFilter(name, value);
855 getFilter: function(index)
857 return this.filterHash[index].id;
859 getFilterName: function(index)
861 return this.filterHash[index].name;
863 removeFilter: function(index)
865 delete this.filterHash[index];
868 clearFilter: function()
870 this.filterHash = new Array();
873 getFilterString: function()
876 if( this.singleFilter != null ) {
877 return 'pz:id='+this.singleFilter.id;
879 else if( this.filterNums <= 0 ) {
883 var filter = 'pz:id=';
884 for(var i = 0; i < this.filterHash.length; i++)
886 if (this.filterHash[i] == undefined) continue;
887 if (filter > 'pz:id=') filter = filter + '|';
888 filter += this.filterHash[i].id;
892 totalLength: function()
894 var simpleLength = this.simpleQuery != '' ? 1 : 0;
895 return this.advTerms.length + simpleLength;
897 clearSingleFilter: function()
899 this.singleFilter = null;
901 setSingleFilter: function(name, value)
903 this.singleFilter = {"name": name, "id": value };
905 getSingleFilterName: function()
907 return this.singleFilter.name;