2 if(typeof window.jQuery == "undefined")
3 throw new Error("pz2.js requires jQuery library");
4 // prevent execution of more than once
5 if(typeof window.pz2 == "undefined") {
6 window.undefined = window.undefined;
8 var pz2 = function(paramArray) {
12 // at least one callback required
14 throw new Error("An array with parameters has to be suplied when instantiating a class");
17 __myself.statCallback = paramArray.onstat || null;
18 __myself.showCallback = paramArray.onshow || null;
19 __myself.termlistCallback = paramArray.onterm || null;
20 __myself.recordCallback = paramArray.onrecord || null;
21 __myself.bytargetCallback = paramArray.onbytarget || null;
24 __myself.termKeys = paramArray.termlist || "subject";
26 // some configurational stuff
27 __myself.pz2String = "search.pz2";
28 __myself.keepAlive = 50000;
30 __myself.sessionID = null;
31 __myself.initStatusOK = false;
32 __myself.pingStatusOK = false;
33 __myself.searchStatusOK = false;
35 if ( paramArray.keepAlive < __myself.keepAlive )
36 __myself.keepAlive = paramArray.keepAlive;
39 __myself.currentSort = "relevance";
41 __myself.currentStart = 0;
42 __myself.currentNum = 20;
44 // last full record retrieved
45 __myself.currRecID = null;
47 __myself.currQuery = null;
50 __myself.statTime = paramArray.stattime || 2000;
51 __myself.statTimer = null;
52 __myself.termTime = paramArray.termtime || 1000;
53 __myself.termTimer = null;
54 __myself.showTime = paramArray.showtime || 1000;
55 __myself.showTimer = null;
56 __myself.bytargetTime = paramArray.bytargettime || 1000;
57 __myself.bytargetTimer = null;
59 // active clients, updated by stat and show
60 // might be an issue since bytarget will poll accordingly
61 __myself.activeClients = 1;
64 $(document).ajaxError(
65 function (request, settings, exception) {
66 if ( settings.responseXML && settings.responseXML.getElementsByTagName("error") )
67 throw new Error( settings.responseXML.getElementsByTagName("error")[0].childNodes[0].nodeValue);
71 if (paramArray.autoInit !== false)
72 __myself.init(__myself.keepAlive);
75 init: function(keepAlive)
77 if ( keepAlive < __myself.keepAlive )
78 __myself.keepAlive = keepAlive;
80 $.get( __myself.pz2String,
81 { "command": "init" },
83 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
84 __myself.initStatusOK = true;
85 __myself.sessionID = data.getElementsByTagName("session")[0].childNodes[0].nodeValue;
86 setTimeout(__myself.ping, __myself.keepAlive);
89 // if it gets here the http return code was 200 (pz2 errors are 417)
90 // but the response was invalid, it should never occur
91 setTimeout("__myself.init()", 1000)
95 // no need to ping explicitly
98 if( !__myself.initStatusOK )
100 // session is not initialized code here
102 $.get( __myself.pz2String,
103 { "command": "ping", "session": __myself.sessionID },
105 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
106 __myself.pingStatusOK = true;
107 setTimeout("__myself.ping()", __myself.keepAlive);
110 // if it gets here the http return code was 200 (pz2 errors are 417)
111 // but the response was invalid, it should never occur
112 setTimeout("__myself.ping()", 1000)
116 search: function(query, num, sort)
118 clearTimeout(__myself.statTimer);
119 clearTimeout(__myself.showTimer);
120 clearTimeout(__myself.termTimer);
121 clearTimeout(__myself.bytargetTimer);
123 if( !__myself.initStatusOK )
126 if( query !== undefined )
127 __myself.currQuery = query;
129 throw new Error("You need to supply query to the search command");
131 $.get( __myself.pz2String,
132 { "command": "search", "session": __myself.sessionID, "query": __myself.currQuery },
134 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
135 __myself.searchStatusOK = true;
137 __myself.show(0, num, sort)
138 if ( __myself.statCallback )
139 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 2);
140 if ( __myself.termlistCallback )
141 __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 2);
142 if ( __myself.bytargetCallback )
143 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 2);
146 // if it gets here the http return code was 200 (pz2 errors are 417)
147 // but the response was invalid, it should never occur
148 setTimeout("__myself.search(__myself.currQuery)", 1000);
154 if( !__myself.searchStatusOK )
156 // if called explicitly takes precedence
157 clearTimeout(__myself.statTimer);
159 $.get( __myself.pz2String,
160 { "command": "stat", "session": __myself.sessionID },
162 if ( data.getElementsByTagName("stat") ) {
163 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
164 __myself.activeClients = activeClients;
166 "activeclients": activeClients,
167 "hits": Number( data.getElementsByTagName("hits")[0].childNodes[0].nodeValue ),
168 "records": Number( data.getElementsByTagName("records")[0].childNodes[0].nodeValue ),
169 "clients": Number( data.getElementsByTagName("clients")[0].childNodes[0].nodeValue ),
170 "initializing": Number( data.getElementsByTagName("initializing")[0].childNodes[0].nodeValue ),
171 "searching": Number( data.getElementsByTagName("searching")[0].childNodes[0].nodeValue ),
172 "presenting": Number( data.getElementsByTagName("presenting")[0].childNodes[0].nodeValue ),
173 "idle": Number( data.getElementsByTagName("idle")[0].childNodes[0].nodeValue ),
174 "failed": Number( data.getElementsByTagName("failed")[0].childNodes[0].nodeValue ),
175 "error": Number( data.getElementsByTagName("error")[0].childNodes[0].nodeValue )
177 __myself.statCallback(stat);
178 if (activeClients > 0)
179 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime);
182 // if it gets here the http return code was 200 (pz2 errors are 417)
183 // but the response was invalid, it should never occur
184 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4)
188 show: function(start, num, sort)
190 if( !__myself.searchStatusOK )
192 // if called explicitly takes precedence
193 clearTimeout(__myself.showTimer);
195 if( sort !== undefined )
196 __myself.currentSort = sort;
197 if( start !== undefined )
198 __myself.currentStart = Number( start );
199 if( num !== undefined )
200 __myself.currentNum = Number( num );
202 $.get( __myself.pz2String,
203 { "command": "show", "session": __myself.sessionID, "start": __myself.currentStart,
204 "num": __myself.currentNum, "sort": __myself.currentSort, "block": 1 },
206 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
207 // first parse the status data send along with records
208 // this is strictly bound to the format
209 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
211 "activeclients": activeClients,
212 "merged": Number( data.getElementsByTagName("merged")[0].childNodes[0].nodeValue ),
213 "total": Number( data.getElementsByTagName("total")[0].childNodes[0].nodeValue ),
214 "start": Number( data.getElementsByTagName("start")[0].childNodes[0].nodeValue ),
215 "num": Number( data.getElementsByTagName("num")[0].childNodes[0].nodeValue ),
218 // parse all the first-level nodes for all <hit> tags
219 var hits = data.getElementsByTagName("hit");
220 var hit = new Array();
221 for (i = 0; i < hits.length; i++) {
222 show.hits[i] = new Array();
223 for ( j = 0; j < hits[i].childNodes.length; j++) {
224 if ( hits[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
225 var nodeName = hits[i].childNodes[j].nodeName;
226 var nodeText = hits[i].childNodes[j].firstChild.nodeValue;
227 show.hits[i][nodeName] = nodeText;
231 __myself.showCallback(show);
232 if (activeClients > 0)
233 __myself.showTimer = setTimeout("__myself.show()", __myself.showTime);
236 // if it gets here the http return code was 200 (pz2 errors are 417)
237 // but the response was invalid, it should never occur
238 __myself.showTimer = setTimeout("__myself.show()", __myself.showTime / 4);
244 if( !__myself.searchStatusOK )
247 if( id !== undefined )
248 __myself.currRecID = id;
250 $.get( __myself.pz2String,
251 { "command": "record", "session": __myself.sessionID, "id": __myself.currRecID },
254 var record = new Array();
255 if ( recordNode = data.getElementsByTagName("record")[0] ) {
256 for ( i = 0; i < recordNode.childNodes.length; i++) {
257 if ( recordNode.childNodes[i].nodeType == Node.ELEMENT_NODE ) {
258 var nodeName = recordNode.childNodes[i].nodeName;
259 var nodeText = recordNode.childNodes[i].firstChild.nodeValue;
260 record[nodeName] = nodeText;
263 // the location is hard coded
264 var locationNodes = recordNode.getElementsByTagName("location");
265 record["location"] = new Array();
266 for ( i = 0; i < locationNodes.length; i++ ) {
267 record["location"][i] = {
268 "id": locationNodes[i].getAttribute("id"),
269 "name": locationNodes[i].getAttribute("name")
271 for ( j = 0; j < locationNodes[i].childNodes.length; j++) {
272 if ( locationNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
273 var nodeName = locationNodes[i].childNodes[j].nodeName;
274 var nodeText = locationNodes[i].childNodes[j].firstChild.nodeValue;
275 record["location"][i][nodeName] = nodeText;
279 __myself.recordCallback(record);
282 // if it gets here the http return code was 200 (pz2 errors are 417)
283 // but the response was invalid, it should never occur
284 setTimeout("__myself.record(__myself.currRecID)", 1000);
290 if( !__myself.searchStatusOK )
292 // if called explicitly takes precedence
293 clearTimeout(__myself.termTimer);
295 $.get( __myself.pz2String,
296 { "command": "termlist", "session": __myself.sessionID, "name": __myself.termKeys },
298 if ( data.getElementsByTagName("termlist") ) {
299 var termList = { "activeclients": Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue ) }
300 var termLists = data.getElementsByTagName("list");
302 for (i = 0; i < termLists.length; i++) {
303 var listName = termLists[i].getAttribute('name');
304 termList[listName] = new Array();
305 var terms = termLists[i].getElementsByTagName('term');
306 //for each term in the list
307 for (j = 0; j < terms.length; j++) {
309 "name": terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue,
310 "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue,
312 termList[listName][j] = term;
315 __myself.termlistCallback(termList);
316 if (termList["activeclients"] > 0)
317 __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime);
320 // if it gets here the http return code was 200 (pz2 errors are 417)
321 // but the response was invalid, it should never occur
322 __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4);
329 if( !__myself.searchStatusOK )
331 // if called explicitly takes precedence
332 clearTimeout(__myself.bytargetTimer);
334 $.get( __myself.pz2String,
335 { "command": "bytarget", "session": __myself.sessionID },
337 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
338 var targetNodes = data.getElementsByTagName("target");
339 var bytarget = new Array();
340 for ( i = 0; i < targetNodes.length; i++) {
341 bytarget[i] = new Array();
342 for( j = 0; j < targetNodes[i].childNodes.length; j++ ) {
343 if ( targetNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
344 var nodeName = targetNodes[i].childNodes[j].nodeName;
345 var nodeText = targetNodes[i].childNodes[j].firstChild.nodeValue;
346 bytarget[i][nodeName] = nodeText;
350 __myself.bytargetCallback(bytarget);
351 if ( __myself.activeClients > 0 )
352 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime);
355 // if it gets here the http return code was 200 (pz2 errors are 417)
356 // but the response was invalid, it should never occur
357 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4);
361 // just for testing, probably shouldn't be here
362 showNext: function(page)
364 var step = page || 1;
365 __myself.show( ( step * __myself.currentNum ) + __myself.currentStart );
367 showPrev: function(page)
369 if (__myself.currentStart == 0 )
371 var step = page || 1;
372 var newStart = __myself.currentStart - (step * __myself.currentNum );
373 __myself.show( newStart > 0 ? newStart : 0 );