Index: lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/dao/IChatUserDAO.java
===================================================================
diff -u -rbb0125e666b0b7a7ca7fbe5f76d7ba2a4f11e639 -r3d84cf2b08553e9c9ffed34da2570147bd0056c6
--- lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/dao/IChatUserDAO.java	(.../IChatUserDAO.java)	(revision bb0125e666b0b7a7ca7fbe5f76d7ba2a4f11e639)
+++ lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/dao/IChatUserDAO.java	(.../IChatUserDAO.java)	(revision 3d84cf2b08553e9c9ffed34da2570147bd0056c6)
@@ -41,4 +41,12 @@
 	ChatUser getByUserIdAndSessionId(Long userId, Long toolSessionId);
 
 	void saveOrUpdate(ChatUser chatUser);
+
+	/**
+	 * 
+	 * @param loginName
+	 * @param sessionId
+	 * @return
+	 */
+	ChatUser getByLoginNameAndSessionId(String loginName, Long toolSessionId);
 }
\ No newline at end of file
Index: lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/dao/hibernate/ChatUserDAO.java
===================================================================
diff -u -rb069bcb700b054c25e75f74b1340b44a40ae829b -r3d84cf2b08553e9c9ffed34da2570147bd0056c6
--- lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/dao/hibernate/ChatUserDAO.java	(.../ChatUserDAO.java)	(revision b069bcb700b054c25e75f74b1340b44a40ae829b)
+++ lams_tool_chat/src/java/org/lamsfoundation/lams/tool/chat/dao/hibernate/ChatUserDAO.java	(.../ChatUserDAO.java)	(revision 3d84cf2b08553e9c9ffed34da2570147bd0056c6)
@@ -38,6 +38,10 @@
 	public static final String SQL_QUERY_FIND_BY_USER_ID_SESSION_ID = "from "
 			+ ChatUser.class.getName() + " as f"
 			+ " where user_id=? and f.chatSession.sessionId=?";
+	
+	public static final String SQL_QUERY_FIND_BY_LOGIN_NAME_SESSION_ID = "from "
+		+ ChatUser.class.getName() + " as f"
+		+ " where login_name=? and f.chatSession.sessionId=?";
 
 	public ChatUser getByUserIdAndSessionId(Long userId, Long toolSessionId) {
 		List list = this.getHibernateTemplate().find(
@@ -50,6 +54,19 @@
 		return (ChatUser) list.get(0);
 	}
 
+	public ChatUser getByLoginNameAndSessionId(String loginName, Long toolSessionId) {
+
+			List list = this.getHibernateTemplate().find(
+					SQL_QUERY_FIND_BY_LOGIN_NAME_SESSION_ID,
+					new Object[] { loginName, toolSessionId });
+
+			if (list == null || list.isEmpty())
+				return null;
+
+			return (ChatUser) list.get(0);
+		
+	}
+	
 	public void saveOrUpdate(ChatUser chatUser) {
 		this.getHibernateTemplate().saveOrUpdate(chatUser);
 		this.getHibernateTemplate().flush();