Allow pz2 parameter usesession=boolean. Default value is true in

which case pz2 defines sessions on its own or is told to via method
'init'. For usesession=false, the object does not use ping and
sessions are not sent to the non-pazpar2 service behind it.

diff --git a/js/pz2.js b/js/pz2.js
index c4b2431..950cfa1 100644 (file)
--- a/js/pz2.js
+++ b/js/pz2.js
@@ -1,5 +1,5 @@
 /*
-** $Id: pz2.js,v 1.38 2007-06-21 14:05:41 adam Exp $
+** $Id: pz2.js,v 1.39 2007-06-22 10:52:09 adam Exp $
 ** pz2.js - pazpar2's javascript client library.
 */
 
@@ -32,7 +32,11 @@ var pz2 = function(paramArray) {
     __myself.suppProtoVer = '1';
     __myself.pz2String = paramArray.pazpar2path || "search.pz2";
     __myself.stylesheet = paramArray.detailstylesheet || null;
-
+    __myself.useSessions = true;
+    if (paramArray.usesessions != undefined) {
+         __myself.useSessions = paramArray.usesessions;
+    }
+       
     //load stylesheet if required in async mode
     if( __myself.stylesheet ) {
         var request = new pzHttpRequest( __myself.stylesheet );
@@ -43,7 +47,7 @@ var pz2 = function(paramArray) {
                 }
         );
     }
-
+       
     // at least one callback required
     if ( !paramArray )
         throw new Error("An array with parameters has to be suplied when instantiating a class");
@@ -134,12 +138,12 @@ pz2.prototype =
     init: function ( sessionId ) 
     {
         __myself.reset();
+
         if ( sessionId != undefined ) {
             __myself.initStatusOK = true;
             __myself.sessionID = sessionId;
             __myself.ping();
-
-        } else {
+        } else if (__myself.useSessions) {
             var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler);
             request.get(
                 [ { "command": "init" } ],
@@ -567,8 +571,10 @@ pzHttpRequest.prototype =
        for (var i = 0; i < params.length; i++) {
            var el = params[i];
            for (var key in el) {
-               getUrl += sep + key + '=' + encodeURI(el[key]);
-               sep = '&';
+               if (el[key] != null) {
+                   getUrl += sep + key + '=' + encodeURI(el[key]);
+                   sep = '&';
+               }
            }
        }
         return getUrl;