Index: lams_tool_nb/src/java/org/lamsfoundation/lams/tool/noticeboard/dao/INoticeboardUserDAO.java
===================================================================
diff -u -r3aa620f59cfe79037a3e3857530913148dddb2e4 -rc93330a7d493ffe92057ab591b861acadfa9436c
--- lams_tool_nb/src/java/org/lamsfoundation/lams/tool/noticeboard/dao/INoticeboardUserDAO.java	(.../INoticeboardUserDAO.java)	(revision 3aa620f59cfe79037a3e3857530913148dddb2e4)
+++ lams_tool_nb/src/java/org/lamsfoundation/lams/tool/noticeboard/dao/INoticeboardUserDAO.java	(.../INoticeboardUserDAO.java)	(revision c93330a7d493ffe92057ab591b861acadfa9436c)
@@ -26,6 +26,7 @@
 package org.lamsfoundation.lams.tool.noticeboard.dao;
 
 import org.lamsfoundation.lams.tool.noticeboard.NoticeboardUser;
+import org.lamsfoundation.lams.tool.noticeboard.NoticeboardSession;
 
 /**
  * @author mtruong
@@ -43,5 +44,7 @@
     public void removeNbUser(NoticeboardUser nbUser);
     
     public void removeNbUser(Long userId);
+    
+    public int getNumberOfUsers(NoticeboardSession nbSession);
    
 }