2 ** $Id: pz2.js,v 1.59 2007-09-28 10:14:09 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 )
30 // at least one callback required
32 throw new Error("Pz2.js: An array with parameters has to be suplied when instantiating a class");
37 //supported pazpar2's protocol version
38 __myself.suppProtoVer = '1';
39 if (typeof paramArray.pazpar2path != "undefined")
40 __myself.pz2String = paramArray.pazpar2path;
42 __myself.pz2String = "/pazpar2/search.pz2";
43 __myself.useSessions = true;
45 __myself.stylesheet = paramArray.detailstylesheet || null;
46 //load stylesheet if required in async mode
47 if( __myself.stylesheet ) {
48 var request = new pzHttpRequest( __myself.stylesheet );
49 request.get( {}, function ( doc ) { __myself.xslDoc = doc; } );
52 __myself.errorHandler = paramArray.errorhandler || null;
55 __myself.statCallback = paramArray.onstat || null;
56 __myself.showCallback = paramArray.onshow || null;
57 __myself.termlistCallback = paramArray.onterm || null;
58 __myself.recordCallback = paramArray.onrecord || null;
59 __myself.bytargetCallback = paramArray.onbytarget || null;
60 __myself.resetCallback = paramArray.onreset || null;
63 __myself.termKeys = paramArray.termlist || "subject";
65 // some configurational stuff
66 __myself.keepAlive = 50000;
68 if ( paramArray.keepAlive < __myself.keepAlive )
69 __myself.keepAlive = paramArray.keepAlive;
71 __myself.sessionID = null;
72 __myself.initStatusOK = false;
73 __myself.pingStatusOK = false;
74 __myself.searchStatusOK = false;
77 __myself.currentSort = "relevance";
80 __myself.currentStart = 0;
81 __myself.currentNum = 20;
83 // last full record retrieved
84 __myself.currRecID = null;
87 __myself.currQuery = null;
90 __myself.statTime = paramArray.stattime || 1000;
91 __myself.statTimer = null;
92 __myself.termTime = paramArray.termtime || 1000;
93 __myself.termTimer = null;
94 __myself.showTime = paramArray.showtime || 1000;
95 __myself.showTimer = null;
96 __myself.showFastCount = 4;
97 __myself.bytargetTime = paramArray.bytargettime || 1000;
98 __myself.bytargetTimer = null;
100 // counters for each command and applied delay
101 __myself.dumpFactor = 500;
102 __myself.showCounter = 0;
103 __myself.termCounter = 0;
104 __myself.statCounter = 0;
105 __myself.bytargetCounter = 0;
107 // active clients, updated by stat and show
108 // might be an issue since bytarget will poll accordingly
109 __myself.activeClients = 1;
111 // if in proxy mode no need to init
112 if (paramArray.usesessions != undefined) {
113 __myself.useSessions = paramArray.usesessions;
114 __myself.initStatusOK = true;
116 // else, auto init session or wait for a user init?
117 if (__myself.useSessions && paramArray.autoInit !== false) {
124 //error handler for async error throws
125 throwError: function (errMsg, errCode)
127 var err = new Error(errMsg);
128 if (errCode) err.code = errCode;
130 if (__myself.errorHandler) {
131 __myself.errorHandler(err);
138 // stop activity by clearing tiemouts
141 clearTimeout(__myself.statTimer);
142 clearTimeout(__myself.showTimer);
143 clearTimeout(__myself.termTimer);
144 clearTimeout(__myself.bytargetTimer);
147 // reset status variables
150 if ( __myself.useSessions ) {
151 __myself.sessionID = null;
152 __myself.initStatusOK = false;
153 __myself.pingStatusOK = false;
155 __myself.searchStatusOK = false;
158 if ( __myself.resetCallback )
159 __myself.resetCallback();
162 init: function ( sessionId )
166 // session id as a param
167 if ( sessionId != undefined && __myself.useSessions ) {
168 __myself.initStatusOK = true;
169 __myself.sessionID = sessionId;
171 // old school direct pazpar2 init
172 } else if (__myself.useSessions) {
173 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
175 { "command": "init" },
177 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
178 if ( data.getElementsByTagName("protocol")[0].childNodes[0].nodeValue
179 != __myself.suppProtoVer )
180 throw new Error("Server's protocol not supported by the client");
181 __myself.initStatusOK = true;
182 __myself.sessionID = data.getElementsByTagName("session")[0].childNodes[0].nodeValue;
183 setTimeout("__myself.ping()", __myself.keepAlive);
186 // if it gets here the http return code was 200 (pz2 errors are 417)
187 // but the response was invalid, it should never occur
188 // setTimeout("__myself.init()", 1000);
189 __myself.throwError('Init failed. Malformed WS resonse.', 110);
192 // when through proxy no need to init
194 __myself.initStatusOK = true;
197 // no need to ping explicitly
200 // pinging only makes sense when using pazpar2 directly
201 if( !__myself.initStatusOK || !__myself.useSessions )
202 throw new Error('Pz2.js: Ping not allowed (proxy mode) or session not initialized.');
203 // session is not initialized code here
205 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
207 { "command": "ping", "session": __myself.sessionID },
209 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
210 __myself.pingStatusOK = true;
211 setTimeout("__myself.ping()", __myself.keepAlive);
214 // if it gets here the http return code was 200 (pz2 errors are 417)
215 // but the response was invalid, it should never occur
216 // setTimeout("__myself.ping()", 1000);
217 __myself.throwError('Ping failed. Malformed WS resonse.', 111);
221 search: function (query, num, sort, filter, showfrom)
223 clearTimeout(__myself.statTimer);
224 clearTimeout(__myself.showTimer);
225 clearTimeout(__myself.termTimer);
226 clearTimeout(__myself.bytargetTimer);
228 __myself.showCounter = 0;
229 __myself.termCounter = 0;
230 __myself.bytargetCounter = 0;
231 __myself.statCounter = 0;
234 if( !__myself.initStatusOK )
235 throw new Error('Pz2.js: session not initialized.');
237 if( query !== undefined )
238 __myself.currQuery = query;
240 throw new Error("Pz2.js: no query supplied to the search command.");
242 if ( showfrom !== undefined )
243 var start = showfrom;
247 var searchParams = { "command": "search", "query": __myself.currQuery, "session": __myself.sessionID };
249 if (filter !== undefined)
250 searchParams["filter"] = filter;
252 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
256 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
257 __myself.searchStatusOK = true;
259 __myself.show(start, num, sort);
260 if ( __myself.statCallback )
262 //__myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4);
263 if ( __myself.termlistCallback )
265 //__myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4);
266 if ( __myself.bytargetCallback )
268 //__myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4);
271 // if it gets here the http return code was 200 (pz2 errors are 417)
272 // but the response was invalid, it should never occur
273 // setTimeout("__myself.search(__myself.currQuery)", 500);
274 __myself.throwError('Search failed. Malformed WS resonse.', 112);
280 if( !__myself.initStatusOK )
281 throw new Error('Pz2.js: session not initialized.');
283 // if called explicitly takes precedence
284 clearTimeout(__myself.statTimer);
286 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
288 { "command": "stat", "session": __myself.sessionID },
290 if ( data.getElementsByTagName("stat") ) {
291 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
292 __myself.activeClients = activeClients;
294 "activeclients": activeClients,
295 "hits": Number( data.getElementsByTagName("hits")[0].childNodes[0].nodeValue ),
296 "records": Number( data.getElementsByTagName("records")[0].childNodes[0].nodeValue ),
297 "clients": Number( data.getElementsByTagName("clients")[0].childNodes[0].nodeValue ),
298 "initializing": Number( data.getElementsByTagName("initializing")[0].childNodes[0].nodeValue ),
299 "searching": Number( data.getElementsByTagName("searching")[0].childNodes[0].nodeValue ),
300 "presenting": Number( data.getElementsByTagName("presenting")[0].childNodes[0].nodeValue ),
301 "idle": Number( data.getElementsByTagName("idle")[0].childNodes[0].nodeValue ),
302 "failed": Number( data.getElementsByTagName("failed")[0].childNodes[0].nodeValue ),
303 "error": Number( data.getElementsByTagName("error")[0].childNodes[0].nodeValue )
306 __myself.statCounter++;
307 var delay = __myself.statTime + __myself.statCounter * __myself.dumpFactor;
308 if ( activeClients > 0 )
309 __myself.statTimer = setTimeout("__myself.stat()", delay);
310 __myself.statCallback(stat);
313 // if it gets here the http return code was 200 (pz2 errors are 417)
314 // but the response was invalid, it should never occur
315 //__myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4);
316 __myself.throwError('Stat failed. Malformed WS resonse.', 113);
320 show: function(start, num, sort)
322 if( !__myself.searchStatusOK && __myself.useSessions )
323 throw new Error('Pz2.js: show command has to be preceded with a search command.');
325 // if called explicitly takes precedence
326 clearTimeout(__myself.showTimer);
328 if( sort !== undefined )
329 __myself.currentSort = sort;
330 if( start !== undefined )
331 __myself.currentStart = Number( start );
332 if( num !== undefined )
333 __myself.currentNum = Number( num );
335 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
338 { "command": "show", "session": __myself.sessionID, "start": __myself.currentStart,
339 "num": __myself.currentNum, "sort": __myself.currentSort, "block": 1 },
341 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
342 // first parse the status data send along with records
343 // this is strictly bound to the format
344 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
345 __myself.activeClients = activeClients;
347 "activeclients": activeClients,
348 "merged": Number( data.getElementsByTagName("merged")[0].childNodes[0].nodeValue ),
349 "total": Number( data.getElementsByTagName("total")[0].childNodes[0].nodeValue ),
350 "start": Number( data.getElementsByTagName("start")[0].childNodes[0].nodeValue ),
351 "num": Number( data.getElementsByTagName("num")[0].childNodes[0].nodeValue ),
354 // parse all the first-level nodes for all <hit> tags
355 var hits = data.getElementsByTagName("hit");
356 var hit = new Array();
357 for (i = 0; i < hits.length; i++) {
358 show.hits[i] = new Array();
359 show.hits[i]['location'] = new Array();
360 for ( j = 0; j < hits[i].childNodes.length; j++) {
362 if ( hits[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
363 if (hits[i].childNodes[j].nodeName == 'location') {
364 var locNode = hits[i].childNodes[j];
365 var id = locNode.getAttribute('id');
366 show.hits[i]['location'][id] = {
367 "id": locNode.getAttribute("id"),
368 "name": locNode.getAttribute("name")
372 var nodeName = hits[i].childNodes[j].nodeName;
373 var nodeText = 'ERROR'
374 if ( hits[i].childNodes[j].firstChild )
375 nodeText = hits[i].childNodes[j].firstChild.nodeValue;
376 show.hits[i][nodeName] = nodeText;
381 __myself.showCounter++;
382 var delay = __myself.showTime;
383 if (__myself.showCounter > __myself.showFastCount)
384 delay += __myself.showCounter * __myself.dumpFactor;
385 if ( activeClients > 0 )
386 __myself.showTimer = setTimeout("__myself.show()", delay);
388 __myself.showCallback(show);
391 // if it gets here the http return code was 200 (pz2 errors are 417)
392 // but the response was invalid, it should never occur
393 // __myself.showTimer = setTimeout("__myself.show()", __myself.showTime / 4);
394 __myself.throwError('Show failed. Malformed WS resonse.', 114);
398 record: function(id, offset, params)
400 // we may call record with no previous search if in proxy mode
401 if( !__myself.searchStatusOK && __myself.useSessions)
402 throw new Error('Pz2.js: record command has to be preceded with a search command.');
404 if ( params == undefined )
407 if ( params.callback != undefined ) {
408 callback = params.callback;
410 callback = __myself.recordCallback;
414 if ( params['handle'] == undefined )
417 handle = params['handle'];
419 if( id !== undefined )
420 __myself.currRecID = id;
422 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
424 var recordParams = { "command": "record",
425 "session": __myself.sessionID,
426 "id": __myself.currRecID };
428 if (offset !== undefined) {
429 recordParams["offset"] = offset;
432 if (params.syntax != undefined) {
433 recordParams['syntax'] = params.syntax;
436 __myself.currRecOffset = offset;
442 var record = new Array();
443 record['xmlDoc'] = data;
444 if (__myself.currRecOffset !== undefined) {
445 record['offset'] = __myself.currRecOffset;
446 callback(record, handle);
447 } else if ( recordNode = data.getElementsByTagName("record")[0] ) {
448 // if stylesheet was fetched do not parse the response
449 if ( __myself.xslDoc ) {
450 record['recid'] = recordNode.getElementsByTagName("recid")[0].firstChild.nodeValue;
451 record['xslDoc'] = __myself.xslDoc;
453 for ( i = 0; i < recordNode.childNodes.length; i++) {
454 if ( recordNode.childNodes[i].nodeType == Node.ELEMENT_NODE
455 && recordNode.childNodes[i].nodeName != 'location' ) {
456 var nodeName = recordNode.childNodes[i].nodeName;
457 var nodeText = recordNode.childNodes[i].firstChild.nodeValue;
458 record[nodeName] = nodeText;
461 // the location might be empty!!
462 var locationNodes = recordNode.getElementsByTagName("location");
463 record["location"] = new Array();
464 for ( i = 0; i < locationNodes.length; i++ ) {
465 record["location"][i] = {
466 "id": locationNodes[i].getAttribute("id"),
467 "name": locationNodes[i].getAttribute("name")
470 for ( j = 0; j < locationNodes[i].childNodes.length; j++) {
471 if ( locationNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
472 var nodeName = locationNodes[i].childNodes[j].nodeName;
474 if (locationNodes[i].childNodes[j].firstChild)
475 nodeText = locationNodes[i].childNodes[j].firstChild.nodeValue;
476 record["location"][i][nodeName] = nodeText;
482 callback(record, handle);
485 // if it gets here the http return code was 200 (pz2 errors are 417)
486 // but the response was invalid, it should never occur
487 // setTimeout("__myself.record(__myself.currRecID)", 500);
488 __myself.throwError('Record failed. Malformed WS resonse.', 115);
495 if( !__myself.searchStatusOK && __myself.useSessions )
496 throw new Error('Pz2.js: termlist command has to be preceded with a search command.');
498 // if called explicitly takes precedence
499 clearTimeout(__myself.termTimer);
501 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
503 { "command": "termlist", "session": __myself.sessionID, "name": __myself.termKeys },
505 if ( data.getElementsByTagName("termlist") ) {
506 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
507 __myself.activeClients = activeClients;
508 var termList = { "activeclients": activeClients };
509 var termLists = data.getElementsByTagName("list");
511 for (i = 0; i < termLists.length; i++) {
512 var listName = termLists[i].getAttribute('name');
513 termList[listName] = new Array();
514 var terms = termLists[i].getElementsByTagName('term');
515 //for each term in the list
516 for (j = 0; j < terms.length; j++) {
518 "name": (terms[j].getElementsByTagName("name")[0].childNodes.length
519 ? terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue
521 "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue || 'ERROR'
524 var termIdNode = terms[j].getElementsByTagName("id");
525 if(terms[j].getElementsByTagName("id").length)
526 term["id"] = termIdNode[0].childNodes[0].nodeValue;
528 termList[listName][j] = term;
532 __myself.termCounter++;
533 var delay = __myself.termTime + __myself.termCounter * __myself.dumpFactor;
534 if ( activeClients > 0 )
535 __myself.termTimer = setTimeout("__myself.termlist()", delay);
537 __myself.termlistCallback(termList);
540 // if it gets here the http return code was 200 (pz2 errors are 417)
541 // but the response was invalid, it should never occur
542 // __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4);
543 __myself.throwError('Termlist failed. Malformed WS resonse.', 116);
550 if( !__myself.initStatusOK && __myself.useSessions )
551 throw new Error('Pz2.js: bytarget command has to be preceded with a search command.');
553 // no need to continue
554 if( !__myself.searchStatusOK )
557 // if called explicitly takes precedence
558 clearTimeout(__myself.bytargetTimer);
560 var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
562 { "command": "bytarget", "session": __myself.sessionID },
564 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
565 var targetNodes = data.getElementsByTagName("target");
566 var bytarget = new Array();
567 for ( i = 0; i < targetNodes.length; i++) {
568 bytarget[i] = new Array();
569 for( j = 0; j < targetNodes[i].childNodes.length; j++ ) {
570 if ( targetNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
571 var nodeName = targetNodes[i].childNodes[j].nodeName;
572 var nodeText = targetNodes[i].childNodes[j].firstChild.nodeValue;
573 bytarget[i][nodeName] = nodeText;
578 __myself.bytargetCounter++;
579 var delay = __myself.bytargetTime + __myself.bytargetCounter * __myself.dumpFactor;
580 if ( __myself.activeClients > 0 )
581 __myself.bytargetTimer = setTimeout("__myself.bytarget()", delay);
583 __myself.bytargetCallback(bytarget);
586 // if it gets here the http return code was 200 (pz2 errors are 417)
587 // but the response was invalid, it should never occur
588 // __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4);
589 __myself.throwError('Bytarget failed. Malformed WS resonse.', 117);
594 // just for testing, probably shouldn't be here
595 showNext: function(page)
597 var step = page || 1;
598 __myself.show( ( step * __myself.currentNum ) + __myself.currentStart );
601 showPrev: function(page)
603 if (__myself.currentStart == 0 )
605 var step = page || 1;
606 var newStart = __myself.currentStart - (step * __myself.currentNum );
607 __myself.show( newStart > 0 ? newStart : 0 );
610 showPage: function(pageNum)
612 //var page = pageNum || 1;
613 __myself.show(pageNum * __myself.currentNum);
618 *********************************************************************************
619 ** AJAX HELPER CLASS ************************************************************
620 *********************************************************************************
622 var pzHttpRequest = function ( url, errorHandler ) {
625 this.errorHandler = errorHandler || null;
628 if ( window.XMLHttpRequest ) {
629 this.request = new XMLHttpRequest();
630 } else if ( window.ActiveXObject ) {
632 this.request = new ActiveXObject( 'Msxml2.XMLHTTP' );
634 this.request = new ActiveXObject( 'Microsoft.XMLHTTP' );
639 pzHttpRequest.prototype =
641 get: function ( params, callback )
643 this._send( 'GET', params, '', callback );
646 post: function ( params, data, callback )
648 this._send( 'POST', params, data, callback );
654 this.request.open( 'GET', this.url, this.async );
655 this.request.send('');
656 if ( this.request.status == 200 )
657 return this.request.responseXML;
660 _send: function ( type, params, data, callback )
662 this.callback = callback;
665 this.request.open( type, this._urlAppendParams(params), this.async );
666 this.request.onreadystatechange = function () {
667 context._handleResponse();
669 this.request.send(data);
672 _urlAppendParams: function (params)
674 var getUrl = this.url;
678 for (var key in el) {
679 if (el[key] != null) {
680 getUrl += sep + key + '=' + encodeURIComponent(el[key]);
687 _handleResponse: function ()
689 if ( this.request.readyState == 4 ) {
690 // pick up pazpr2 errors first
691 if ( this.request.responseXML
692 && this.request.responseXML.documentElement.nodeName == 'error'
693 && this.request.responseXML.getElementsByTagName("error").length ) {
695 if ( this.request.responseXML.getElementsByTagName("error")[0].childNodes.length )
696 errAddInfo = ': ' + this.request.responseXML.getElementsByTagName("error")[0].childNodes[0].nodeValue;
697 var errMsg = this.request.responseXML.getElementsByTagName("error")[0].getAttribute("msg");
698 var errCode = this.request.responseXML.getElementsByTagName("error")[0].getAttribute("code");
700 var err = new Error(errMsg + errAddInfo);
703 if (this.errorHandler) {
704 this.errorHandler(err);
709 } else if ( this.request.status == 200 ) {
710 this.callback( this.request.responseXML );
712 var err = new Error("Pz2.js: HTTP request error (AJAX). Code: "
713 + this.request.status + " Info: "
714 + this.request.statusText );
717 if (this.errorHandler) {
718 this.errorHandler(err);
729 *********************************************************************************
730 ** XML HELPER CLASS ************************************************************
731 *********************************************************************************
736 if ( window.ActiveXObject) {
737 var DOMDoc = document;
739 var DOMDoc = Document.prototype;
742 DOMDoc.newXmlDoc = function ( root )
746 if (document.implementation && document.implementation.createDocument) {
747 doc = document.implementation.createDocument('', root, null);
748 } else if ( window.ActiveXObject ) {
749 doc = new ActiveXObject("MSXML2.DOMDocument");
750 doc.loadXML('<' + root + '/>');
752 throw new Error ('No XML support in this browser');
759 DOMDoc.parseXmlFromString = function ( xmlString )
763 if ( window.DOMParser ) {
764 var parser = new DOMParser();
765 doc = parser.parseFromString( xmlString, "text/xml");
766 } else if ( window.ActiveXObject ) {
767 doc = new ActiveXObject("MSXML2.DOMDocument");
768 doc.loadXML( xmlString );
770 throw new Error ("No XML parsing support in this browser.");
776 DOMDoc.transformToDoc = function (xmlDoc, xslDoc)
778 if ( window.XSLTProcessor ) {
779 var proc = new XSLTProcessor();
780 proc.importStylesheet( xslDoc );
781 return proc.transformToDocument(xmlDoc);
782 } else if ( window.ActiveXObject ) {
783 return document.parseXmlFromString(xmlDoc.transformNode(xslDoc));
785 alert( 'Unable to perform XSLT transformation in this browser' );
791 Element_removeFromDoc = function (DOM_Element)
793 DOM_Element.parentNode.removeChild(DOM_Element);
796 Element_emptyChildren = function (DOM_Element)
798 while( DOM_Element.firstChild ) {
799 DOM_Element.removeChild( DOM_Element.firstChild )
803 Element_appendTransformResult = function ( DOM_Element, xmlDoc, xslDoc )
805 if ( window.XSLTProcessor ) {
806 var proc = new XSLTProcessor();
807 proc.importStylesheet( xslDoc );
809 docFrag = proc.transformToFragment( xmlDoc, DOM_Element.ownerDocument );
810 DOM_Element.appendChild(docFrag);
811 } else if ( window.ActiveXObject ) {
812 DOM_Element.innerHTML = xmlDoc.transformNode( xslDoc );
814 alert( 'Unable to perform XSLT transformation in this browser' );
818 Element_appendTextNode = function (DOM_Element, tagName, textContent )
820 var node = DOM_Element.ownerDocument.createElement(tagName);
821 var text = DOM_Element.ownerDocument.createTextNode(textContent);
823 DOM_Element.appendChild(node);
824 node.appendChild(text);
829 Element_setTextContent = function ( DOM_Element, textContent )
831 if (typeof DOM_Element.textContent !== "undefined") {
832 DOM_Element.textContent = textContent;
833 } else if (typeof DOM_Element.innerText !== "undefined" ) {
834 DOM_Element.innerText = textContent;
836 throw new Error("Cannot set text content of the node, no such method.");
840 Element_getTextContent = function (DOM_Element)
842 if ( typeof DOM_Element.textContent != 'undefined' ) {
843 return DOM_Element.textContent;
844 } else if (typeof DOM_Element.text != 'undefined') {
845 return DOM_Element.text;
847 throw new Error("Cannot get text content of the node, no such method.");
852 *********************************************************************************
853 ** QUERY CLASS ******************************************************************
854 *********************************************************************************
857 var pzFilter = function()
859 this.filterHash = new Array();
865 addFilter: function(name, value)
867 var filter = {"name": name, "id": value };
868 this.filterHash[this.filterHash.length] = filter;
870 return this.filterHash.length - 1;
873 setFilter: function(name, value)
875 this.filterHash = new Array();
877 this.addFilter(name, value);
880 getFilter: function(index)
882 return this.filterHash[index].id;
885 getFilterName: function(index)
887 return this.filterHash[index].name;
890 removeFilter: function(index)
892 delete this.filterHash[index];
896 clearFilter: function()
898 this.filterHash = new Array();
902 getFilterString: function()
904 if( this.filterNums <= 0 ) {
908 var filter = 'pz:id=';
909 for(var i = 0; i < this.filterHash.length; i++)
911 if (this.filterHash[i] == undefined) continue;
912 if (filter > 'pz:id=') filter = filter + '|';
913 filter += this.filterHash[i].id;
919 var mkState = function()
921 this.sort = 'relevance';
924 this.simpleQuery = '';
925 this.singleFilter = null;
926 this.advTerms = new Array();
935 this.simpleQuery = '';
936 this.advTerms = new Array();
937 this.simpleFilter = null;
941 clearSimpleQuery: function()
943 this.simpleQuery = '';
946 addTerm: function(field, value)
948 var term = {"field": field, "value": value};
949 this.advTerms[this.numTerms] = term;
953 getTermValueByIdx: function(index)
955 return this.advTerms[index].value;
958 getTermFieldByIdx: function(index)
960 return this.advTerms[index].field;
963 /* semicolon separated list of terms for given field*/
964 getTermsByField: function(field)
967 for(var i = 0; i < this.advTerms.length; i++)
969 if( this.advTerms[i].field == field )
970 terms = terms + this.queryHas[i].value + ';';
975 addTermsFromList: function(inputString, field)
977 var inputArr = inputString.split(';');
978 for(var i=0; i < inputArr.length; i++)
980 if(inputArr[i].length < 3) continue;
981 this.advTerms[this.numTerms]
982 = {"field": field, "value": inputArr[i] };
987 removeTermByIdx: function(index)
989 this.advTerms.splice(index, 1);
996 if( this.simpleQuery != '')
997 ccl = this.simpleQuery;
998 for(var i = 0; i < this.advTerms.length; i++)
1000 if (ccl != '') ccl = ccl + ' and ';
1001 ccl = ccl + this.advTerms[i].field
1002 +'="'+this.advTerms[i].value+'"';
1007 totalLength: function()
1009 var simpleLength = this.simpleQuery != '' ? 1 : 0;
1010 return this.advTerms.length + simpleLength;
1013 clearSingleFilter: function()
1015 this.singleFilter = null;
1018 setSingleFilter: function(name, value)
1020 this.singleFilter = {"name": name, "id": value };
1023 getSingleFilterName: function()
1025 return this.singleFilter.name;
1028 getSingleFilterString: function()
1030 if( this.singleFilter != null ) {
1031 return 'pz:id='+this.singleFilter.id;