Index: lams_common/src/java/org/lamsfoundation/lams/learningdesign/dto/BaseDTO.java
===================================================================
diff -u -rfc77ed7c05214a99c9d9148a55e160d2d4a455ad -rc5e09e9db9b683b5503b9479c297bca130c363c4
--- lams_common/src/java/org/lamsfoundation/lams/learningdesign/dto/BaseDTO.java	(.../BaseDTO.java)	(revision fc77ed7c05214a99c9d9148a55e160d2d4a455ad)
+++ lams_common/src/java/org/lamsfoundation/lams/learningdesign/dto/BaseDTO.java	(.../BaseDTO.java)	(revision c5e09e9db9b683b5503b9479c297bca130c363c4)
@@ -1,21 +1,58 @@
-/*
- * Created on Apr 8, 2005
- *
- * TODO To change the template for this generated file go to
- * Window - Preferences - Java - Code Style - Code Templates
+/****************************************************************
+ * Copyright (C) 2005 LAMS Foundation (http://lamsfoundation.org)
+ * =============================================================
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ * USA
+ * 
+ * http://www.gnu.org/licenses/gpl.txt
+ * ****************************************************************
  */
 package org.lamsfoundation.lams.learningdesign.dto;
 
 import org.lamsfoundation.lams.util.wddx.WDDXTAGS;
 
 /**
- * @author Minhas
- *
- * TODO To change the template for this generated type comment go to
- * Window - Preferences - Java - Code Style - Code Templates
+ * @author Manpreet Minhas
+ * 
+ * This class acts as base class for all authoring DTO's.
+ * 
+ * FLASH returns Long and Integer values as Double.
+ * 
+ * For example, a value of 10 would returned as 10.0   
+ * 
+ * This class contains utility methods for converting this 
+ * Double value into the required data types.
+ * 
+ * All Integer and Long null values are represented as
+ * -111111.0 in flash, which are indicated by 	
+ * 		WDDXTAGS.NUMERIC_NULL_VALUE_INTEGER and
+ * 		WDDXTAGS.NUMERIC_NULL_VALUE_LONG 
+ * attributes defined in the WDDXTAGS interface.
+ * So if the object being converted is equivalent to this
+ * value it returns null rather than returning -111111. 
+ * 
  */
-public class BaseDTO {
-	
+public class BaseDTO {	
+	/**
+	 * This method converts the passed
+	 * Object into an Integer
+	 * 
+	 * @param ob The object to be converted
+	 * @return Integer The required value
+	 */
 	public Integer convertToInteger(Object ob){
 		Double doub = (Double)ob;
 		Integer integer = new Integer(doub.intValue());
@@ -24,6 +61,13 @@
 		else
 			return null;
 	}
+	/**
+	 * This method converts the passed
+	 * Object into Long
+	 * 
+	 * @param ob The object to be converted
+	 * @return Long The required value
+	 */
 	public Long convertToLong(Object ob){
 		Double doub = (Double)ob;
 		Long longValue = new Long(doub.longValue());