Allow undefined values in CQL query args and translate them to NULL

Rather than checking for undefined values in the args array, check that the index exists, and treat undefined values as nulls.

Signed-off-by: Daniel Smedegaard Buus <[email protected]>

lib/types.js

@@ -100,6 +100,7 @@ var queryParser = (function() {
 
     var q = 0;
     var a = 0;
+    var len = args.length;
     var str = '';
 
     try {
@@ -108,7 +109,7 @@ var queryParser = (function() {
         q = query.indexOf('?', q);
         if (q >= 0) {
           str += query.substr(oldq, q-oldq);
-          if (args[a] === undefined) {
+          if (a >= len) {
             throw new QueryParserError('Query parameter number ' + (a+1) + ' is not defined. Placeholder for not provided argument.');
           }
           str += typeEncoder.stringifyValue(args[a++]);
@@ -503,7 +504,7 @@ var typeEncoder = (function(){
    * Converts a value to string for a query
    */
   function stringifyValue (item) {
-    if (item === null) {
+    if (item === null || item === undefined) {
       return 'NULL';
     }
     var value = item;
@@ -518,7 +519,7 @@ var typeEncoder = (function(){
         subtype = typeInfo.subtype;
       }
     }
-    if (value === null) {
+    if (value === null || value === undefined) {
       return 'NULL';
     }
     if (!type) {