1 /* prevent execution of more than once */
2 if(typeof window.pz2 == "undefined") {
3 window.undefined = window.undefined;
5 var pz2 = function(callbackArr, autoInit, keepAlive) {
9 // at least one callback required
11 throw new Error("Callback parameters array has to be suplied when instantiating a class");
14 __myself.statCallback = callbackArr.onstat || null;
15 __myself.showCallback = callbackArr.onshow || null;
16 __myself.termlistCallback = callbackArr.onterm || null;
17 __myself.recordCallback = callbackArr.onrecord || null;
18 __myself.bytargetCallback = callbackArr.onbytarget || null;
21 __myself.termKeys = callbackArr.termlist || "subject";
23 // some configurational stuff
24 __myself.pz2String = "search.pz2";
25 __myself.keepAlive = 50000;
27 __myself.sessionID = null;
28 __myself.initStatusOK = false;
29 __myself.pingStatusOK = false;
30 __myself.searchStatusOK = false;
32 if ( keepAlive < __myself.keepAlive )
33 __myself.keepAlive = keepAlive;
36 __myself.currentSort = "relevance";
38 __myself.currentStart = 0;
39 __myself.currentNum = 20;
41 // last full record retrieved
42 __myself.currRecID = null;
44 __myself.currQuery = null;
47 __myself.statTime = 2000;
48 __myself.statTimer = null;
49 __myself.termTime = 1000;
50 __myself.termTimer = null;
51 __myself.showTime = 1000;
52 __myself.showTimer = null;
53 __myself.bytargetTime = 1000;
54 __myself.bytargetTimer = null;
56 // active clients, updated by stat and show
57 // might be an issue since bytarget will poll accordingly
58 __myself.activeClients = 1;
61 $(document).ajaxError(
62 function (request, settings, exception) {
63 if ( settings.responseXML && settings.responseXML.getElementsByTagName("error") )
64 throw new Error( settings.responseXML.getElementsByTagName("error")[0].childNodes[0].nodeValue);
68 if (autoInit !== false)
69 __myself.init(__myself.keepAlive);
72 init: function(keepAlive)
74 if ( keepAlive < __myself.keepAlive )
75 __myself.keepAlive = keepAlive;
77 $.get( __myself.pz2String,
78 { "command": "init" },
80 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
81 __myself.initStatusOK = true;
82 __myself.sessionID = data.getElementsByTagName("session")[0].childNodes[0].nodeValue;
83 setTimeout(__myself.ping, __myself.keepAlive);
86 // if it gets here the http return code was 200 (pz2 errors are 417)
87 // but the response was invalid, it should never occur
88 setTimeout("__myself.init()", 1000)
92 // no need to ping explicitly
95 if( !__myself.initStatusOK )
97 // session is not initialized code here
99 $.get( __myself.pz2String,
100 { "command": "ping", "session": __myself.sessionID },
102 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
103 __myself.pingStatusOK = true;
104 setTimeout("__myself.ping()", __myself.keepAlive);
107 // if it gets here the http return code was 200 (pz2 errors are 417)
108 // but the response was invalid, it should never occur
109 setTimeout("__myself.ping()", 1000)
113 search: function(query, num, sort)
115 clearTimeout(__myself.statTimer);
116 clearTimeout(__myself.showTimer);
117 clearTimeout(__myself.termTimer);
118 clearTimeout(__myself.bytargetTimer);
120 if( !__myself.initStatusOK )
123 if( query !== undefined )
124 __myself.currQuery = query;
126 throw new Error("You need to supply query to the search command");
128 $.get( __myself.pz2String,
129 { "command": "search", "session": __myself.sessionID, "query": __myself.currQuery },
131 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
132 __myself.searchStatusOK = true;
134 __myself.show(0, num, sort)
135 if ( __myself.statCallback )
136 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 2);
137 if ( __myself.termlistCallback )
138 __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 2);
139 if ( __myself.bytargetCallback )
140 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 2);
143 // if it gets here the http return code was 200 (pz2 errors are 417)
144 // but the response was invalid, it should never occur
145 setTimeout("__myself.search(__myself.currQuery)", 1000);
151 if( !__myself.searchStatusOK )
153 // if called explicitly takes precedence
154 clearTimeout(__myself.statTimer);
156 $.get( __myself.pz2String,
157 { "command": "stat", "session": __myself.sessionID },
159 if ( data.getElementsByTagName("stat") ) {
160 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
161 __myself.activeClients = activeClients;
163 "activeclients": activeClients,
164 "hits": Number( data.getElementsByTagName("hits")[0].childNodes[0].nodeValue ),
165 "records": Number( data.getElementsByTagName("records")[0].childNodes[0].nodeValue ),
166 "clients": Number( data.getElementsByTagName("clients")[0].childNodes[0].nodeValue ),
167 "initializing": Number( data.getElementsByTagName("initializing")[0].childNodes[0].nodeValue ),
168 "searching": Number( data.getElementsByTagName("searching")[0].childNodes[0].nodeValue ),
169 "presenting": Number( data.getElementsByTagName("presenting")[0].childNodes[0].nodeValue ),
170 "idle": Number( data.getElementsByTagName("idle")[0].childNodes[0].nodeValue ),
171 "failed": Number( data.getElementsByTagName("failed")[0].childNodes[0].nodeValue ),
172 "error": Number( data.getElementsByTagName("error")[0].childNodes[0].nodeValue )
174 __myself.statCallback(stat);
175 if (activeClients > 0)
176 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime);
179 // if it gets here the http return code was 200 (pz2 errors are 417)
180 // but the response was invalid, it should never occur
181 __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4)
185 show: function(start, num, sort)
187 if( !__myself.searchStatusOK )
189 // if called explicitly takes precedence
190 clearTimeout(__myself.showTimer);
192 if( sort !== undefined )
193 __myself.currentSort = sort;
194 if( start !== undefined )
195 __myself.currentStart = Number( start );
196 if( num !== undefined )
197 __myself.currentNum = Number( num );
199 $.get( __myself.pz2String,
200 { "command": "show", "session": __myself.sessionID, "start": __myself.currentStart,
201 "num": __myself.currentNum, "sort": __myself.currentSort, "block": 1 },
203 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
204 // first parse the status data send along with records
205 // this is strictly bound to the format
206 var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue );
208 "activeclients": activeClients,
209 "merged": Number( data.getElementsByTagName("merged")[0].childNodes[0].nodeValue ),
210 "total": Number( data.getElementsByTagName("total")[0].childNodes[0].nodeValue ),
211 "start": Number( data.getElementsByTagName("start")[0].childNodes[0].nodeValue ),
212 "num": Number( data.getElementsByTagName("num")[0].childNodes[0].nodeValue ),
215 // parse all the first-level nodes for all <hit> tags
216 var hits = data.getElementsByTagName("hit");
217 var hit = new Array();
218 for (i = 0; i < hits.length; i++) {
219 show.hits[i] = new Array();
220 for ( j = 0; j < hits[i].childNodes.length; j++) {
221 if ( hits[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
222 var nodeName = hits[i].childNodes[j].nodeName;
223 var nodeText = hits[i].childNodes[j].firstChild.nodeValue;
224 show.hits[i][nodeName] = nodeText;
228 __myself.showCallback(show);
229 if (activeClients > 0)
230 __myself.showTimer = setTimeout("__myself.show()", __myself.showTime);
233 // if it gets here the http return code was 200 (pz2 errors are 417)
234 // but the response was invalid, it should never occur
235 __myself.showTimer = setTimeout("__myself.show()", __myself.showTime / 4);
241 if( !__myself.searchStatusOK )
244 if( id !== undefined )
245 __myself.currRecID = id;
247 $.get( __myself.pz2String,
248 { "command": "record", "session": __myself.sessionID, "id": __myself.currRecID },
251 var record = new Array();
252 if ( recordNode = data.getElementsByTagName("record")[0] ) {
253 for ( i = 0; i < recordNode.childNodes.length; i++) {
254 if ( recordNode.childNodes[i].nodeType == Node.ELEMENT_NODE ) {
255 var nodeName = recordNode.childNodes[i].nodeName;
256 var nodeText = recordNode.childNodes[i].firstChild.nodeValue;
257 record[nodeName] = nodeText;
260 // the location is hard coded
261 var locationNodes = recordNode.getElementsByTagName("location");
262 record["location"] = new Array();
263 for ( i = 0; i < locationNodes.length; i++ ) {
264 record["location"][i] = {
265 "id": locationNodes[i].getAttribute("id"),
266 "name": locationNodes[i].getAttribute("name")
268 for ( j = 0; j < locationNodes[i].childNodes.length; j++) {
269 if ( locationNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
270 var nodeName = locationNodes[i].childNodes[j].nodeName;
271 var nodeText = locationNodes[i].childNodes[j].firstChild.nodeValue;
272 record["location"][i][nodeName] = nodeText;
276 __myself.recordCallback(record);
279 // if it gets here the http return code was 200 (pz2 errors are 417)
280 // but the response was invalid, it should never occur
281 setTimeout("__myself.record(__myself.currRecID)", 1000);
287 if( !__myself.searchStatusOK )
289 // if called explicitly takes precedence
290 clearTimeout(__myself.termTimer);
292 $.get( __myself.pz2String,
293 { "command": "termlist", "session": __myself.sessionID, "name": __myself.termKeys },
295 if ( data.getElementsByTagName("termlist") ) {
296 var termList = { "activeclients": Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue ) }
297 var termLists = data.getElementsByTagName("list");
299 for (i = 0; i < termLists.length; i++) {
300 var listName = termLists[i].getAttribute('name');
301 termList[listName] = new Array();
302 var terms = termLists[i].getElementsByTagName('term');
303 //for each term in the list
304 for (j = 0; j < terms.length; j++) {
306 "name": terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue,
307 "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue,
309 termList[listName][j] = term;
312 __myself.termlistCallback(termList);
313 if (termList["activeclients"] > 0)
314 __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime);
317 // if it gets here the http return code was 200 (pz2 errors are 417)
318 // but the response was invalid, it should never occur
319 __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4);
326 if( !__myself.searchStatusOK )
328 // if called explicitly takes precedence
329 clearTimeout(__myself.bytargetTimer);
331 $.get( __myself.pz2String,
332 { "command": "bytarget", "session": __myself.sessionID },
334 if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) {
335 var targetNodes = data.getElementsByTagName("target");
336 var bytarget = new Array();
337 for ( i = 0; i < targetNodes.length; i++) {
338 bytarget[i] = new Array();
339 for( j = 0; j < targetNodes[i].childNodes.length; j++ ) {
340 if ( targetNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) {
341 var nodeName = targetNodes[i].childNodes[j].nodeName;
342 var nodeText = targetNodes[i].childNodes[j].firstChild.nodeValue;
343 bytarget[i][nodeName] = nodeText;
347 __myself.bytargetCallback(bytarget);
348 if ( __myself.activeClients > 0 )
349 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime);
352 // if it gets here the http return code was 200 (pz2 errors are 417)
353 // but the response was invalid, it should never occur
354 __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4);