Added DBPointer upconversion to DBRef

Author: christkv

lib/bson/parser/deserializer.js

@@ -388,6 +388,30 @@ var deserializeObject = function(buffer, index, options, isArray) {
       } else {
         object[name]  = new Code(functionString, scopeObject);
       }
+		} else if(elementType == BSON_DATA_DBPOINTER) {
+			// Get the code string size
+      var stringSize = buffer[index++] | buffer[index++] << 8 | buffer[index++] << 16 | buffer[index++] << 24;
+			// Check if we have a valid string
+			if(stringSize <= 0 || stringSize > (buffer.length - index) || buffer[index + stringSize - 1] != 0) throw new Error("bad string length in bson");
+			// Namespace
+      var namespace = buffer.toString('utf8', index, index + stringSize - 1);
+			// Update parse index position
+      index = index + stringSize;
+
+			// Read the oid
+			var oidBuffer = new Buffer(12);
+			buffer.copy(oidBuffer, 0, index, index + 12);
+      var oid = new ObjectID(oidBuffer);
+
+			// Update the index
+			index = index + 12;
+
+			// Split the namespace
+			var parts = namespace.split('.');
+			var db = parts.shift();
+			var collection = parts.join('.');
+			// Upgrade to DBRef type
+			object[name] = new DBRef(collection, oid, db);
     } else {
 			throw new Error("Detected unknown BSON type " + elementType.toString(16) + " for fieldname \"" + name + "\", are you using the latest BSON parser");
 		}
@@ -513,6 +537,12 @@ BSON.BSON_DATA_NULL = 10;
  * @classconstant BSON_DATA_REGEXP
  **/
 BSON.BSON_DATA_REGEXP = 11;
+/**
+ * Code BSON Type
+ *
+ * @classconstant BSON_DATA_DBPOINTER
+ **/
+BSON.BSON_DATA_DBPOINTER = 12;
 /**
  * Code BSON Type
  *