From: Jakub Skoczen Date: Tue, 2 Oct 2007 11:47:50 +0000 (+0000) Subject: Using closures instead of global variables. X-Git-Tag: PAZPAR2.1.0.5~16 X-Git-Url: http://git.indexdata.com/?p=pazpar2-moved-to-github.git;a=commitdiff_plain;h=aa622908a43254464ce8aa3099f863459b024a72 Using closures instead of global variables. --- diff --git a/js/pz2.js b/js/pz2.js index cb19e78..e879197 100644 --- a/js/pz2.js +++ b/js/pz2.js @@ -1,5 +1,5 @@ /* -** $Id: pz2.js,v 1.60 2007-10-02 10:33:18 jakub Exp $ +** $Id: pz2.js,v 1.61 2007-10-02 11:47:50 jakub Exp $ ** pz2.js - pazpar2's javascript client library. */ @@ -29,93 +29,91 @@ var pz2 = function ( paramArray ) // at least one callback required if ( !paramArray ) - throw new Error("Pz2.js: An array with parameters has to be suplied when instantiating a class"); - - //for convenience - __myself = this; + throw new Error("Pz2.js: An array with parameters has to be suplied when instantiating a class"); //supported pazpar2's protocol version - __myself.suppProtoVer = '1'; + this.suppProtoVer = '1'; if (typeof paramArray.pazpar2path != "undefined") - __myself.pz2String = paramArray.pazpar2path; + this.pz2String = paramArray.pazpar2path; else - __myself.pz2String = "/pazpar2/search.pz2"; - __myself.useSessions = true; + this.pz2String = "/pazpar2/search.pz2"; + this.useSessions = true; - __myself.stylesheet = paramArray.detailstylesheet || null; + this.stylesheet = paramArray.detailstylesheet || null; //load stylesheet if required in async mode - if( __myself.stylesheet ) { - var request = new pzHttpRequest( __myself.stylesheet ); - request.get( {}, function ( doc ) { __myself.xslDoc = doc; } ); + if( this.stylesheet ) { + var context = this; + var request = new pzHttpRequest( this.stylesheet ); + request.get( {}, function ( doc ) { context.xslDoc = doc; } ); } - __myself.errorHandler = paramArray.errorhandler || null; + this.errorHandler = paramArray.errorhandler || null; // function callbacks - __myself.statCallback = paramArray.onstat || null; - __myself.showCallback = paramArray.onshow || null; - __myself.termlistCallback = paramArray.onterm || null; - __myself.recordCallback = paramArray.onrecord || null; - __myself.bytargetCallback = paramArray.onbytarget || null; - __myself.resetCallback = paramArray.onreset || null; + this.statCallback = paramArray.onstat || null; + this.showCallback = paramArray.onshow || null; + this.termlistCallback = paramArray.onterm || null; + this.recordCallback = paramArray.onrecord || null; + this.bytargetCallback = paramArray.onbytarget || null; + this.resetCallback = paramArray.onreset || null; // termlist keys - __myself.termKeys = paramArray.termlist || "subject"; + this.termKeys = paramArray.termlist || "subject"; // some configurational stuff - __myself.keepAlive = 50000; + this.keepAlive = 50000; - if ( paramArray.keepAlive < __myself.keepAlive ) - __myself.keepAlive = paramArray.keepAlive; + if ( paramArray.keepAlive < this.keepAlive ) + this.keepAlive = paramArray.keepAlive; - __myself.sessionID = null; - __myself.initStatusOK = false; - __myself.pingStatusOK = false; - __myself.searchStatusOK = false; + this.sessionID = null; + this.initStatusOK = false; + this.pingStatusOK = false; + this.searchStatusOK = false; // for sorting - __myself.currentSort = "relevance"; + this.currentSort = "relevance"; // where are we? - __myself.currentStart = 0; - __myself.currentNum = 20; + this.currentStart = 0; + this.currentNum = 20; // last full record retrieved - __myself.currRecID = null; + this.currRecID = null; // current query - __myself.currQuery = null; + this.currQuery = null; //timers - __myself.statTime = paramArray.stattime || 1000; - __myself.statTimer = null; - __myself.termTime = paramArray.termtime || 1000; - __myself.termTimer = null; - __myself.showTime = paramArray.showtime || 1000; - __myself.showTimer = null; - __myself.showFastCount = 4; - __myself.bytargetTime = paramArray.bytargettime || 1000; - __myself.bytargetTimer = null; + this.statTime = paramArray.stattime || 1000; + this.statTimer = null; + this.termTime = paramArray.termtime || 1000; + this.termTimer = null; + this.showTime = paramArray.showtime || 1000; + this.showTimer = null; + this.showFastCount = 4; + this.bytargetTime = paramArray.bytargettime || 1000; + this.bytargetTimer = null; // counters for each command and applied delay - __myself.dumpFactor = 500; - __myself.showCounter = 0; - __myself.termCounter = 0; - __myself.statCounter = 0; - __myself.bytargetCounter = 0; + this.dumpFactor = 500; + this.showCounter = 0; + this.termCounter = 0; + this.statCounter = 0; + this.bytargetCounter = 0; // active clients, updated by stat and show // might be an issue since bytarget will poll accordingly - __myself.activeClients = 1; + this.activeClients = 1; // if in proxy mode no need to init if (paramArray.usesessions != undefined) { - __myself.useSessions = paramArray.usesessions; - __myself.initStatusOK = true; + this.useSessions = paramArray.usesessions; + this.initStatusOK = true; } // else, auto init session or wait for a user init? - if (__myself.useSessions && paramArray.autoInit !== false) { - __myself.init(); + if (this.useSessions && paramArray.autoInit !== false) { + this.init(); } }; @@ -127,8 +125,8 @@ pz2.prototype = var err = new Error(errMsg); if (errCode) err.code = errCode; - if (__myself.errorHandler) { - __myself.errorHandler(err); + if (this.errorHandler) { + this.errorHandler(err); } else { throw err; @@ -138,104 +136,117 @@ pz2.prototype = // stop activity by clearing tiemouts stop: function () { - clearTimeout(__myself.statTimer); - clearTimeout(__myself.showTimer); - clearTimeout(__myself.termTimer); - clearTimeout(__myself.bytargetTimer); + clearTimeout(this.statTimer); + clearTimeout(this.showTimer); + clearTimeout(this.termTimer); + clearTimeout(this.bytargetTimer); }, // reset status variables reset: function () { - if ( __myself.useSessions ) { - __myself.sessionID = null; - __myself.initStatusOK = false; - __myself.pingStatusOK = false; + if ( this.useSessions ) { + this.sessionID = null; + this.initStatusOK = false; + this.pingStatusOK = false; } - __myself.searchStatusOK = false; - __myself.stop(); + this.searchStatusOK = false; + this.stop(); - if ( __myself.resetCallback ) - __myself.resetCallback(); + if ( this.resetCallback ) + this.resetCallback(); }, init: function ( sessionId ) { - __myself.reset(); + this.reset(); // session id as a param - if ( sessionId != undefined && __myself.useSessions ) { - __myself.initStatusOK = true; - __myself.sessionID = sessionId; - __myself.ping(); + if ( sessionId != undefined && this.useSessions ) { + this.initStatusOK = true; + this.sessionID = sessionId; + this.ping(); // old school direct pazpar2 init - } else if (__myself.useSessions) { - var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + } else if (this.useSessions) { + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); request.get( { "command": "init" }, function(data) { - if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { - if ( data.getElementsByTagName("protocol")[0].childNodes[0].nodeValue - != __myself.suppProtoVer ) + if ( data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK" ) { + if ( data.getElementsByTagName("protocol")[0] + .childNodes[0].nodeValue + != context.suppProtoVer ) throw new Error("Server's protocol not supported by the client"); - __myself.initStatusOK = true; - __myself.sessionID = data.getElementsByTagName("session")[0].childNodes[0].nodeValue; - setTimeout("__myself.ping()", __myself.keepAlive); + context.initStatusOK = true; + context.sessionID = + data.getElementsByTagName("session")[0] + .childNodes[0].nodeValue; + setTimeout( + function () { + context.ping(); + }, + context.keepAlive + ); } else - // if it gets here the http return code was 200 (pz2 errors are 417) - // but the response was invalid, it should never occur - // setTimeout("__myself.init()", 1000); - __myself.throwError('Init failed. Malformed WS resonse.', 110); + context.throwError('Init failed. Malformed WS resonse.', + 110); } ); // when through proxy no need to init } else { - __myself.initStatusOK = true; + this.initStatusOK = true; } }, // no need to ping explicitly ping: function () { // pinging only makes sense when using pazpar2 directly - if( !__myself.initStatusOK || !__myself.useSessions ) + if( !this.initStatusOK || !this.useSessions ) throw new Error('Pz2.js: Ping not allowed (proxy mode) or session not initialized.'); // session is not initialized code here - var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); request.get( - { "command": "ping", "session": __myself.sessionID }, + { "command": "ping", "session": this.sessionID }, function(data) { - if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { - __myself.pingStatusOK = true; - setTimeout("__myself.ping()", __myself.keepAlive); + if ( data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK" ) { + context.pingStatusOK = true; + setTimeout( + function () { + context.ping(); + }, + context.keepAlive + ); } else - // if it gets here the http return code was 200 (pz2 errors are 417) - // but the response was invalid, it should never occur - // setTimeout("__myself.ping()", 1000); - __myself.throwError('Ping failed. Malformed WS resonse.', 111); + context.throwError('Ping failed. Malformed WS resonse.', + 111); } ); }, search: function (query, num, sort, filter, showfrom) { - clearTimeout(__myself.statTimer); - clearTimeout(__myself.showTimer); - clearTimeout(__myself.termTimer); - clearTimeout(__myself.bytargetTimer); + clearTimeout(this.statTimer); + clearTimeout(this.showTimer); + clearTimeout(this.termTimer); + clearTimeout(this.bytargetTimer); - __myself.showCounter = 0; - __myself.termCounter = 0; - __myself.bytargetCounter = 0; - __myself.statCounter = 0; + this.showCounter = 0; + this.termCounter = 0; + this.bytargetCounter = 0; + this.statCounter = 0; // no proxy mode - if( !__myself.initStatusOK ) + if( !this.initStatusOK ) throw new Error('Pz2.js: session not initialized.'); if( query !== undefined ) - __myself.currQuery = query; + this.currQuery = query; else throw new Error("Pz2.js: no query supplied to the search command."); @@ -244,112 +255,157 @@ pz2.prototype = else var start = 0; - var searchParams = { "command": "search", "query": __myself.currQuery, "session": __myself.sessionID }; + var searchParams = { + "command": "search", + "query": this.currQuery, + "session": this.sessionID + }; if (filter !== undefined) searchParams["filter"] = filter; - var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); request.get( searchParams, function(data) { - if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { - __myself.searchStatusOK = true; + if ( data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK" ) { + context.searchStatusOK = true; //piggyback search - __myself.show(start, num, sort); - if ( __myself.statCallback ) - __myself.stat(); - //__myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4); - if ( __myself.termlistCallback ) - __myself.termlist(); - //__myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4); - if ( __myself.bytargetCallback ) - __myself.bytarget(); - //__myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4); + context.show(start, num, sort); + if ( context.statCallback ) + context.stat(); + if ( context.termlistCallback ) + context.termlist(); + if ( context.bytargetCallback ) + context.bytarget(); } else - // if it gets here the http return code was 200 (pz2 errors are 417) - // but the response was invalid, it should never occur - // setTimeout("__myself.search(__myself.currQuery)", 500); - __myself.throwError('Search failed. Malformed WS resonse.', 112); + context.throwError('Search failed. Malformed WS resonse.', + 112); } ); }, stat: function() { - if( !__myself.initStatusOK ) + if( !this.initStatusOK ) throw new Error('Pz2.js: session not initialized.'); // if called explicitly takes precedence - clearTimeout(__myself.statTimer); + clearTimeout(this.statTimer); - var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); request.get( - { "command": "stat", "session": __myself.sessionID }, + { "command": "stat", "session": this.sessionID }, function(data) { if ( data.getElementsByTagName("stat") ) { - var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue ); - __myself.activeClients = activeClients; + var activeClients = + Number( data.getElementsByTagName("activeclients")[0] + .childNodes[0].nodeValue ); + context.activeClients = activeClients; var stat = { - "activeclients": activeClients, - "hits": Number( data.getElementsByTagName("hits")[0].childNodes[0].nodeValue ), - "records": Number( data.getElementsByTagName("records")[0].childNodes[0].nodeValue ), - "clients": Number( data.getElementsByTagName("clients")[0].childNodes[0].nodeValue ), - "initializing": Number( data.getElementsByTagName("initializing")[0].childNodes[0].nodeValue ), - "searching": Number( data.getElementsByTagName("searching")[0].childNodes[0].nodeValue ), - "presenting": Number( data.getElementsByTagName("presenting")[0].childNodes[0].nodeValue ), - "idle": Number( data.getElementsByTagName("idle")[0].childNodes[0].nodeValue ), - "failed": Number( data.getElementsByTagName("failed")[0].childNodes[0].nodeValue ), - "error": Number( data.getElementsByTagName("error")[0].childNodes[0].nodeValue ) + "activeclients": activeClients, + "hits": + Number( data.getElementsByTagName("hits")[0] + .childNodes[0].nodeValue ), + "records": + Number( data.getElementsByTagName("records")[0] + .childNodes[0].nodeValue ), + "clients": + Number( data.getElementsByTagName("clients")[0] + .childNodes[0].nodeValue ), + "initializing": + Number( data.getElementsByTagName("initializing")[0] + .childNodes[0].nodeValue ), + "searching": + Number( data.getElementsByTagName("searching")[0] + .childNodes[0].nodeValue ), + "presenting": + Number( data.getElementsByTagName("presenting")[0] + .childNodes[0].nodeValue ), + "idle": + Number( data.getElementsByTagName("idle")[0] + .childNodes[0].nodeValue ), + "failed": + Number( data.getElementsByTagName("failed")[0] + .childNodes[0].nodeValue ), + "error": + Number( data.getElementsByTagName("error")[0] + .childNodes[0].nodeValue ) }; - __myself.statCounter++; - var delay = __myself.statTime + __myself.statCounter * __myself.dumpFactor; + context.statCounter++; + var delay = context.statTime + + context.statCounter * context.dumpFactor; + if ( activeClients > 0 ) - __myself.statTimer = setTimeout("__myself.stat()", delay); - __myself.statCallback(stat); + context.statTimer = + setTimeout( + function () { + context.stat(); + }, + delay + ); + context.statCallback(stat); } else - // if it gets here the http return code was 200 (pz2 errors are 417) - // but the response was invalid, it should never occur - //__myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4); - __myself.throwError('Stat failed. Malformed WS resonse.', 113); + context.throwError('Stat failed. Malformed WS resonse.', + 113); } ); }, show: function(start, num, sort) { - if( !__myself.searchStatusOK && __myself.useSessions ) + if( !this.searchStatusOK && this.useSessions ) throw new Error('Pz2.js: show command has to be preceded with a search command.'); // if called explicitly takes precedence - clearTimeout(__myself.showTimer); + clearTimeout(this.showTimer); if( sort !== undefined ) - __myself.currentSort = sort; + this.currentSort = sort; if( start !== undefined ) - __myself.currentStart = Number( start ); + this.currentStart = Number( start ); if( num !== undefined ) - __myself.currentNum = Number( num ); + this.currentNum = Number( num ); - var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); request.get( - { "command": "show", "session": __myself.sessionID, "start": __myself.currentStart, - "num": __myself.currentNum, "sort": __myself.currentSort, "block": 1 }, + { + "command": "show", + "session": this.sessionID, + "start": this.currentStart, + "num": this.currentNum, + "sort": this.currentSort, + "block": 1 + }, function(data) { - if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { + if ( data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK" ) { // first parse the status data send along with records // this is strictly bound to the format - var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue ); - __myself.activeClients = activeClients; + var activeClients = + Number( data.getElementsByTagName("activeclients")[0] + .childNodes[0].nodeValue ); + context.activeClients = activeClients; var show = { - "activeclients": activeClients, - "merged": Number( data.getElementsByTagName("merged")[0].childNodes[0].nodeValue ), - "total": Number( data.getElementsByTagName("total")[0].childNodes[0].nodeValue ), - "start": Number( data.getElementsByTagName("start")[0].childNodes[0].nodeValue ), - "num": Number( data.getElementsByTagName("num")[0].childNodes[0].nodeValue ), - "hits": [] + "activeclients": activeClients, + "merged": + Number( data.getElementsByTagName("merged")[0] + .childNodes[0].nodeValue ), + "total": + Number( data.getElementsByTagName("total")[0] + .childNodes[0].nodeValue ), + "start": + Number( data.getElementsByTagName("start")[0] + .childNodes[0].nodeValue ), + "num": + Number( data.getElementsByTagName("num")[0] + .childNodes[0].nodeValue ), + "hits": [] }; // parse all the first-level nodes for all tags var hits = data.getElementsByTagName("hit"); @@ -359,8 +415,10 @@ pz2.prototype = show.hits[i]['location'] = new Array(); for ( j = 0; j < hits[i].childNodes.length; j++) { var locCount = 0; - if ( hits[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) { - if (hits[i].childNodes[j].nodeName == 'location') { + if ( hits[i].childNodes[j].nodeType + == Node.ELEMENT_NODE ) { + if (hits[i].childNodes[j].nodeName + == 'location') { var locNode = hits[i].childNodes[j]; var id = locNode.getAttribute('id'); show.hits[i]['location'][id] = { @@ -369,45 +427,51 @@ pz2.prototype = }; } else { - var nodeName = hits[i].childNodes[j].nodeName; + var nodeName = + hits[i].childNodes[j].nodeName; var nodeText = 'ERROR' if ( hits[i].childNodes[j].firstChild ) - nodeText = hits[i].childNodes[j].firstChild.nodeValue; + nodeText = + hits[i].childNodes[j] + .firstChild.nodeValue; show.hits[i][nodeName] = nodeText; } } } } - __myself.showCounter++; - var delay = __myself.showTime; - if (__myself.showCounter > __myself.showFastCount) - delay += __myself.showCounter * __myself.dumpFactor; + context.showCounter++; + var delay = context.showTime; + if (context.showCounter > context.showFastCount) + delay += context.showCounter * context.dumpFactor; if ( activeClients > 0 ) - __myself.showTimer = setTimeout("__myself.show()", delay); + context.showTimer = setTimeout( + function () { + context.show(); + }, + delay); - __myself.showCallback(show); + context.showCallback(show); } else - // if it gets here the http return code was 200 (pz2 errors are 417) - // but the response was invalid, it should never occur - // __myself.showTimer = setTimeout("__myself.show()", __myself.showTime / 4); - __myself.throwError('Show failed. Malformed WS resonse.', 114); + context.throwError('Show failed. Malformed WS resonse.', + 114); } ); }, record: function(id, offset, params) { // we may call record with no previous search if in proxy mode - if( !__myself.searchStatusOK && __myself.useSessions) - throw new Error('Pz2.js: record command has to be preceded with a search command.'); - + if( !this.searchStatusOK && this.useSessions) + throw new Error( + 'Pz2.js: record command has to be preceded with a search command.' + ); if ( params == undefined ) params = {}; if ( params.callback != undefined ) { callback = params.callback; } else { - callback = __myself.recordCallback; + callback = this.recordCallback; } // what is that? @@ -417,13 +481,14 @@ pz2.prototype = handle = params['handle']; if( id !== undefined ) - __myself.currRecID = id; + this.currRecID = id; - var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); var recordParams = { "command": "record", - "session": __myself.sessionID, - "id": __myself.currRecID }; + "session": this.sessionID, + "id": this.currRecID }; if (offset !== undefined) { recordParams["offset"] = offset; @@ -433,7 +498,7 @@ pz2.prototype = recordParams['syntax'] = params.syntax; } - __myself.currRecOffset = offset; + this.currRecOffset = offset; request.get( recordParams, @@ -441,25 +506,35 @@ pz2.prototype = var recordNode; var record = new Array(); record['xmlDoc'] = data; - if (__myself.currRecOffset !== undefined) { - record['offset'] = __myself.currRecOffset; + if (context.currRecOffset !== undefined) { + record['offset'] = context.currRecOffset; callback(record, handle); - } else if ( recordNode = data.getElementsByTagName("record")[0] ) { + } else if ( recordNode = + data.getElementsByTagName("record")[0] ) { // if stylesheet was fetched do not parse the response - if ( __myself.xslDoc ) { - record['recid'] = recordNode.getElementsByTagName("recid")[0].firstChild.nodeValue; - record['xslDoc'] = __myself.xslDoc; + if ( context.xslDoc ) { + record['recid'] = + recordNode.getElementsByTagName("recid")[0] + .firstChild.nodeValue; + record['xslDoc'] = + context.xslDoc; } else { for ( i = 0; i < recordNode.childNodes.length; i++) { - if ( recordNode.childNodes[i].nodeType == Node.ELEMENT_NODE - && recordNode.childNodes[i].nodeName != 'location' ) { - var nodeName = recordNode.childNodes[i].nodeName; - var nodeText = recordNode.childNodes[i].firstChild.nodeValue; + if ( recordNode.childNodes[i].nodeType + == Node.ELEMENT_NODE + && recordNode.childNodes[i].nodeName + != 'location' ) { + var nodeName = + recordNode.childNodes[i].nodeName; + var nodeText = + recordNode.childNodes[i] + .firstChild.nodeValue; record[nodeName] = nodeText; } } // the location might be empty!! - var locationNodes = recordNode.getElementsByTagName("location"); + var locationNodes = + recordNode.getElementsByTagName("location"); record["location"] = new Array(); for ( i = 0; i < locationNodes.length; i++ ) { record["location"][i] = { @@ -468,11 +543,16 @@ pz2.prototype = }; for ( j = 0; j < locationNodes[i].childNodes.length; j++) { - if ( locationNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) { - var nodeName = locationNodes[i].childNodes[j].nodeName; + if ( locationNodes[i].childNodes[j].nodeType + == Node.ELEMENT_NODE ) { + var nodeName = + locationNodes[i].childNodes[j].nodeName; var nodeText = ''; - if (locationNodes[i].childNodes[j].firstChild) - nodeText = locationNodes[i].childNodes[j].firstChild.nodeValue; + if (locationNodes[i].childNodes[j] + .firstChild) + nodeText = + locationNodes[i].childNodes[j] + .firstChild.nodeValue; record["location"][i][nodeName] = nodeText; } } @@ -482,29 +562,34 @@ pz2.prototype = callback(record, handle); } else - // if it gets here the http return code was 200 (pz2 errors are 417) - // but the response was invalid, it should never occur - // setTimeout("__myself.record(__myself.currRecID)", 500); - __myself.throwError('Record failed. Malformed WS resonse.', 115); + context.throwError('Record failed. Malformed WS resonse.', + 115); } ); }, termlist: function() { - if( !__myself.searchStatusOK && __myself.useSessions ) + if( !this.searchStatusOK && this.useSessions ) throw new Error('Pz2.js: termlist command has to be preceded with a search command.'); // if called explicitly takes precedence - clearTimeout(__myself.termTimer); + clearTimeout(this.termTimer); - var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); request.get( - { "command": "termlist", "session": __myself.sessionID, "name": __myself.termKeys }, + { + "command": "termlist", + "session": this.sessionID, + "name": this.termKeys + }, function(data) { if ( data.getElementsByTagName("termlist") ) { - var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue ); - __myself.activeClients = activeClients; + var activeClients = + Number( data.getElementsByTagName("activeclients")[0] + .childNodes[0].nodeValue ); + context.activeClients = activeClients; var termList = { "activeclients": activeClients }; var termLists = data.getElementsByTagName("list"); //for each termlist @@ -515,78 +600,101 @@ pz2.prototype = //for each term in the list for (j = 0; j < terms.length; j++) { var term = { - "name": (terms[j].getElementsByTagName("name")[0].childNodes.length - ? terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue - : 'ERROR'), - "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue || 'ERROR' + "name": + (terms[j].getElementsByTagName("name")[0] + .childNodes.length + ? terms[j].getElementsByTagName("name")[0] + .childNodes[0].nodeValue + : 'ERROR'), + "freq": + terms[j] + .getElementsByTagName("frequency")[0] + .childNodes[0].nodeValue || 'ERROR' }; - var termIdNode = terms[j].getElementsByTagName("id"); + var termIdNode = + terms[j].getElementsByTagName("id"); if(terms[j].getElementsByTagName("id").length) - term["id"] = termIdNode[0].childNodes[0].nodeValue; - + term["id"] = + termIdNode[0].childNodes[0].nodeValue; termList[listName][j] = term; } } - __myself.termCounter++; - var delay = __myself.termTime + __myself.termCounter * __myself.dumpFactor; + context.termCounter++; + var delay = context.termTime + + context.termCounter * context.dumpFactor; if ( activeClients > 0 ) - __myself.termTimer = setTimeout("__myself.termlist()", delay); + context.termTimer = + setTimeout( + function () { + context.termlist(); + }, + delay + ); - __myself.termlistCallback(termList); + context.termlistCallback(termList); } else - // if it gets here the http return code was 200 (pz2 errors are 417) - // but the response was invalid, it should never occur - // __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4); - __myself.throwError('Termlist failed. Malformed WS resonse.', 116); + context.throwError('Termlist failed. Malformed WS resonse.', + 116); } ); }, bytarget: function() { - if( !__myself.initStatusOK && __myself.useSessions ) + if( !this.initStatusOK && this.useSessions ) throw new Error('Pz2.js: bytarget command has to be preceded with a search command.'); // no need to continue - if( !__myself.searchStatusOK ) + if( !this.searchStatusOK ) return; // if called explicitly takes precedence - clearTimeout(__myself.bytargetTimer); + clearTimeout(this.bytargetTimer); - var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); request.get( - { "command": "bytarget", "session": __myself.sessionID }, + { "command": "bytarget", "session": this.sessionID }, function(data) { - if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { + if ( data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK" ) { var targetNodes = data.getElementsByTagName("target"); var bytarget = new Array(); for ( i = 0; i < targetNodes.length; i++) { bytarget[i] = new Array(); for( j = 0; j < targetNodes[i].childNodes.length; j++ ) { - if ( targetNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) { - var nodeName = targetNodes[i].childNodes[j].nodeName; - var nodeText = targetNodes[i].childNodes[j].firstChild.nodeValue; + if ( targetNodes[i].childNodes[j].nodeType + == Node.ELEMENT_NODE ) { + var nodeName = + targetNodes[i].childNodes[j].nodeName; + var nodeText = + targetNodes[i].childNodes[j] + .firstChild.nodeValue; bytarget[i][nodeName] = nodeText; } } } - __myself.bytargetCounter++; - var delay = __myself.bytargetTime + __myself.bytargetCounter * __myself.dumpFactor; - if ( __myself.activeClients > 0 ) - __myself.bytargetTimer = setTimeout("__myself.bytarget()", delay); - - __myself.bytargetCallback(bytarget); + context.bytargetCounter++; + var delay = context.bytargetTime + + context.bytargetCounter * context.dumpFactor; + if ( context.activeClients > 0 ) + context.bytargetTimer = + setTimeout( + function () { + context.bytarget(); + }, + delay + ); + + context.bytargetCallback(bytarget); } else - // if it gets here the http return code was 200 (pz2 errors are 417) - // but the response was invalid, it should never occur - // __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4); - __myself.throwError('Bytarget failed. Malformed WS resonse.', 117); + context.throwError('Bytarget failed. Malformed WS resonse.', + 117); } ); }, @@ -595,29 +703,29 @@ pz2.prototype = showNext: function(page) { var step = page || 1; - __myself.show( ( step * __myself.currentNum ) + __myself.currentStart ); + this.show( ( step * this.currentNum ) + this.currentStart ); }, showPrev: function(page) { - if (__myself.currentStart == 0 ) + if (this.currentStart == 0 ) return false; var step = page || 1; - var newStart = __myself.currentStart - (step * __myself.currentNum ); - __myself.show( newStart > 0 ? newStart : 0 ); + var newStart = this.currentStart - (step * this.currentNum ); + this.show( newStart > 0 ? newStart : 0 ); }, showPage: function(pageNum) { //var page = pageNum || 1; - __myself.show(pageNum * __myself.currentNum); + this.show(pageNum * this.currentNum); } }; /* -********************************************************************************* -** AJAX HELPER CLASS ************************************************************ -********************************************************************************* +******************************************************************************** +** AJAX HELPER CLASS *********************************************************** +******************************************************************************** */ var pzHttpRequest = function ( url, errorHandler ) { this.request = null;