1 //since explorer is flawed
3 window.Node = new Object();
5 Node.ATTRIBUTE_NODE = 2;
7 Node.CDATA_SECTION_NODE = 4;
8 Node.ENTITY_REFERENCE_NODE = 5;
10 Node.PROCESSING_INSTRUCTION_NODE = 7;
11 Node.COMMENT_NODE = 8;
12 Node.DOCUMENT_NODE = 9;
13 Node.DOCUMENT_TYPE_NODE = 10;
14 Node.DOCUMENT_FRAGMENT_NODE = 11;
15 Node.NOTATION_NODE = 12;
18 if(typeof window.jQuery == "undefined"){
19 throw new Error("pz2.js requires jQuery library");
21 // prevent execution of more than once
22 if(typeof window.pz2 == "undefined") {
23 window.undefined = window.undefined;
25 var pz2 = function(paramArray) {
29 // at least one callback required
31 throw new Error("An array with parameters has to be suplied when instantiating a class");
34 __myself.statCallback = paramArray.onstat || null;
35 __myself.showCallback = paramArray.onshow || null;
36 __myself.termlistCallback = paramArray.onterm || null;
37 __myself.recordCallback = paramArray.onrecord || null;
38 __myself.bytargetCallback = paramArray.onbytarget || null;
41 __myself.termKeys = paramArray.termlist || "subject";
43 // some configurational stuff
44 __myself.pz2String = "search.pz2";
45 __myself.keepAlive = 50000;
47 __myself.sessionID = null;
48 __myself.initStatusOK = false;
49 __myself.pingStatusOK = false;
50 __myself.searchStatusOK = false;
52 if ( paramArray.keepAlive < __myself.keepAlive )
53 __myself.keepAlive = paramArray.keepAlive;
56 __myself.currentSort = "relevance";
58 __myself.currentStart = 0;
59 __myself.currentNum = 20;
61 // last full record retrieved
62 __myself.currRecID = null;
64 __myself.currQuery = null;
67 __myself.statTime = paramArray.stattime || 2000;
68 __myself.statTimer = null;
69 __myself.termTime = paramArray.termtime || 2000;
70 __myself.termTimer = null;
71 __myself.showTime = paramArray.showtime || 2000;
72 __myself.showTimer = null;
73 __myself.bytargetTime = paramArray.bytargettime || 1000;
74 __myself.bytargetTimer = null;
76 // active clients, updated by stat and show
77 // might be an issue since bytarget will poll accordingly
78 __myself.activeClients = 1;
81 $(document).ajaxError(
82 function (request, settings, exception) {
83 if ( settings.responseXML && settings.responseXML.getElementsByTagName("error") )
84 throw new Error( settings.responseXML.getElementsByTagName("error")[0].childNodes[0].nodeValue);
88 if (paramArray.autoInit !== false)
89 __myself.init(__myself.keepAlive);
92 init: function(keepAlive)
94 if ( keepAlive < __myself.keepAlive )
95 __myself.keepAlive = keepAlive;
97 $.get( __myself.pz2String,
98 { "command": "init" },
100 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
101 __myself.initStatusOK = true;
102 __myself.sessionID = data.getElementsByTagName("session")[0].childNodes[0].nodeValue;
103 setTimeout(__myself.ping, __myself.keepAlive);
106 // if it gets here the http return code was 200 (pz2 errors are 417)
107 // but the response was invalid, it should never occur
108 setTimeout("__myself.init()", 1000);
112 // no need to ping explicitly
115 if( !__myself.initStatusOK )
117 // session is not initialized code here
119 $.get( __myself.pz2String,
120 { "command": "ping", "session": __myself.sessionID },
122 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
123 __myself.pingStatusOK = true;
124 setTimeout("__myself.ping()", __myself.keepAlive);
127 // if it gets here the http return code was 200 (pz2 errors are 417)
128 // but the response was invalid, it should never occur
129 setTimeout("__myself.ping()", 1000);
133 search: function(query, num, sort, filter)
135 clearTimeout(__myself.statTimer);
136 clearTimeout(__myself.showTimer);
137 clearTimeout(__myself.termTimer);
138 clearTimeout(__myself.bytargetTimer);
140 if( !__myself.initStatusOK )
143 if( query !== undefined )
144 __myself.currQuery = query;
146 throw new Error("You need to supply query to the search command");
148 if( filter !== undefined )
149 var searchParams = { "command": "search", "session": __myself.sessionID, "query": __myself.currQuery, "filter": filter };
151 var searchParams = { "command": "search", "session": __myself.sessionID, "query": __myself.currQuery };
153 $.get( __myself.pz2String,
156 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
157 __myself.searchStatusOK = true;
159 __myself.show(0, num, sort);
160 if ( __myself.statCallback )
161 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 2);
162 if ( __myself.termlistCallback )
164 //__myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 2);
165 if ( __myself.bytargetCallback )
166 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 2);
169 // if it gets here the http return code was 200 (pz2 errors are 417)
170 // but the response was invalid, it should never occur
171 setTimeout("__myself.search(__myself.currQuery)", 1000);
177 if( !__myself.searchStatusOK )
179 // if called explicitly takes precedence
180 clearTimeout(__myself.statTimer);
182 $.get( __myself.pz2String,
183 { "command": "stat", "session": __myself.sessionID },
185 if ( data.getElementsByTagName("stat") ) {
186 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
187 __myself.activeClients = activeClients;
189 "activeclients": activeClients,
190 "hits": Number( data.getElementsByTagName("hits")[0].childNodes[0].nodeValue ),
191 "records": Number( data.getElementsByTagName("records")[0].childNodes[0].nodeValue ),
192 "clients": Number( data.getElementsByTagName("clients")[0].childNodes[0].nodeValue ),
193 "initializing": Number( data.getElementsByTagName("initializing")[0].childNodes[0].nodeValue ),
194 "searching": Number( data.getElementsByTagName("searching")[0].childNodes[0].nodeValue ),
195 "presenting": Number( data.getElementsByTagName("presenting")[0].childNodes[0].nodeValue ),
196 "idle": Number( data.getElementsByTagName("idle")[0].childNodes[0].nodeValue ),
197 "failed": Number( data.getElementsByTagName("failed")[0].childNodes[0].nodeValue ),
198 "error": Number( data.getElementsByTagName("error")[0].childNodes[0].nodeValue )
200 __myself.statCallback(stat);
201 if (activeClients > 0)
202 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime);
205 // if it gets here the http return code was 200 (pz2 errors are 417)
206 // but the response was invalid, it should never occur
207 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4);
211 show: function(start, num, sort)
213 if( !__myself.searchStatusOK )
215 // if called explicitly takes precedence
216 clearTimeout(__myself.showTimer);
218 if( sort !== undefined )
219 __myself.currentSort = sort;
220 if( start !== undefined )
221 __myself.currentStart = Number( start );
222 if( num !== undefined )
223 __myself.currentNum = Number( num );
225 $.get( __myself.pz2String,
226 { "command": "show", "session": __myself.sessionID, "start": __myself.currentStart,
227 "num": __myself.currentNum, "sort": __myself.currentSort, "block": 1 },
229 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
230 // first parse the status data send along with records
231 // this is strictly bound to the format
232 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
234 "activeclients": activeClients,
235 "merged": Number( data.getElementsByTagName("merged")[0].childNodes[0].nodeValue ),
236 "total": Number( data.getElementsByTagName("total")[0].childNodes[0].nodeValue ),
237 "start": Number( data.getElementsByTagName("start")[0].childNodes[0].nodeValue ),
238 "num": Number( data.getElementsByTagName("num")[0].childNodes[0].nodeValue ),
241 // parse all the first-level nodes for all <hit> tags
242 var hits = data.getElementsByTagName("hit");
243 var hit = new Array();
244 for (i = 0; i < hits.length; i++) {
245 show.hits[i] = new Array();
246 for ( j = 0; j < hits[i].childNodes.length; j++) {
247 if ( hits[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
248 var nodeName = hits[i].childNodes[j].nodeName;
249 var nodeText = hits[i].childNodes[j].firstChild.nodeValue;
250 show.hits[i][nodeName] = nodeText;
254 __myself.showCallback(show);
255 if (activeClients > 0)
256 __myself.showTimer = setTimeout("__myself.show()", __myself.showTime);
259 // if it gets here the http return code was 200 (pz2 errors are 417)
260 // but the response was invalid, it should never occur
261 __myself.showTimer = setTimeout("__myself.show()", __myself.showTime / 4);
267 if( !__myself.searchStatusOK )
270 if( id !== undefined )
271 __myself.currRecID = id;
273 $.get( __myself.pz2String,
274 { "command": "record", "session": __myself.sessionID, "id": __myself.currRecID },
277 var record = new Array();
278 if ( recordNode = data.getElementsByTagName("record")[0] ) {
279 for ( i = 0; i < recordNode.childNodes.length; i++) {
280 if ( recordNode.childNodes[i].nodeType == Node.ELEMENT_NODE ) {
281 var nodeName = recordNode.childNodes[i].nodeName;
282 var nodeText = recordNode.childNodes[i].firstChild.nodeValue;
283 record[nodeName] = nodeText;
286 // the location is hard coded
287 var locationNodes = recordNode.getElementsByTagName("location");
288 record["location"] = new Array();
289 for ( i = 0; i < locationNodes.length; i++ ) {
290 record["location"][i] = {
291 "id": locationNodes[i].getAttribute("id"),
292 "name": locationNodes[i].getAttribute("name")
294 for ( j = 0; j < locationNodes[i].childNodes.length; j++) {
295 if ( locationNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
296 var nodeName = locationNodes[i].childNodes[j].nodeName;
297 var nodeText = locationNodes[i].childNodes[j].firstChild.nodeValue;
298 record["location"][i][nodeName] = nodeText;
302 __myself.recordCallback(record);
305 // if it gets here the http return code was 200 (pz2 errors are 417)
306 // but the response was invalid, it should never occur
307 setTimeout("__myself.record(__myself.currRecID)", 1000);
313 if( !__myself.searchStatusOK )
315 // if called explicitly takes precedence
316 clearTimeout(__myself.termTimer);
318 $.get( __myself.pz2String,
319 { "command": "termlist", "session": __myself.sessionID, "name": __myself.termKeys },
321 if ( data.getElementsByTagName("termlist") ) {
322 var termList = { "activeclients": Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue ) };
323 var termLists = data.getElementsByTagName("list");
325 for (i = 0; i < termLists.length; i++) {
326 var listName = termLists[i].getAttribute('name');
327 termList[listName] = new Array();
328 var terms = termLists[i].getElementsByTagName('term');
329 //for each term in the list
330 for (j = 0; j < terms.length; j++) {
332 "name": terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue,
333 "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue
336 var termIdNode = terms[j].getElementsByTagName("id");
337 if(terms[j].getElementsByTagName("id").length)
338 term["id"] = termIdNode[0].childNodes[0].nodeValue;
340 termList[listName][j] = term;
343 __myself.termlistCallback(termList);
344 if (termList["activeclients"] > 0)
345 __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime);
348 // if it gets here the http return code was 200 (pz2 errors are 417)
349 // but the response was invalid, it should never occur
350 __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4);
357 if( !__myself.searchStatusOK )
359 // if called explicitly takes precedence
360 clearTimeout(__myself.bytargetTimer);
362 $.get( __myself.pz2String,
363 { "command": "bytarget", "session": __myself.sessionID },
365 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
366 var targetNodes = data.getElementsByTagName("target");
367 var bytarget = new Array();
368 for ( i = 0; i < targetNodes.length; i++) {
369 bytarget[i] = new Array();
370 for( j = 0; j < targetNodes[i].childNodes.length; j++ ) {
371 if ( targetNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
372 var nodeName = targetNodes[i].childNodes[j].nodeName;
373 var nodeText = targetNodes[i].childNodes[j].firstChild.nodeValue;
374 bytarget[i][nodeName] = nodeText;
378 __myself.bytargetCallback(bytarget);
379 if ( __myself.activeClients > 0 )
380 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime);
383 // if it gets here the http return code was 200 (pz2 errors are 417)
384 // but the response was invalid, it should never occur
385 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4);
389 // just for testing, probably shouldn't be here
390 showNext: function(page)
392 var step = page || 1;
393 __myself.show( ( step * __myself.currentNum ) + __myself.currentStart );
395 showPrev: function(page)
397 if (__myself.currentStart == 0 )
399 var step = page || 1;
400 var newStart = __myself.currentStart - (step * __myself.currentNum );
401 __myself.show( newStart > 0 ? newStart : 0 );
403 showPage: function(pageNum)
405 //var page = pageNum || 1;
406 __myself.show(pageNum * __myself.currentNum);