Index: lams_monitoring/src/java/org/lamsfoundation/lams/monitoring/monitoringApplicationContext.xml
===================================================================
diff -u -ra7766445094c16b343aa56dc1f73fd3051cef1db -r3438d5b8ee54bba2e782f62d77db620df3e0faef
--- lams_monitoring/src/java/org/lamsfoundation/lams/monitoring/monitoringApplicationContext.xml	(.../monitoringApplicationContext.xml)	(revision a7766445094c16b343aa56dc1f73fd3051cef1db)
+++ lams_monitoring/src/java/org/lamsfoundation/lams/monitoring/monitoringApplicationContext.xml	(.../monitoringApplicationContext.xml)	(revision 3438d5b8ee54bba2e782f62d77db620df3e0faef)
@@ -43,6 +43,7 @@
 		<property name="learningDesignDAO"><ref bean="learningDesignDAO"/></property>
 		<property name="lamsCoreToolService"><ref bean="lamsCoreToolService"/></property>			
 		<property name="learnerService"><ref bean="learnerService"/></property>			
+		<property name="lessonService"><ref bean="lessonService"/></property>			
 		<property name="userManagementService"><ref bean="userManagementService"/></property>			
 		<property name="scheduler"><ref bean="scheduler"/></property>
 		<property name="messageService"><ref bean="monitoringMessageService"/></property>
Index: lams_monitoring/src/java/org/lamsfoundation/lams/monitoring/service/MonitoringService.java
===================================================================
diff -u -rabe8b6d5222e4efc0e5bb332066d481f50d38e8c -r3438d5b8ee54bba2e782f62d77db620df3e0faef
--- lams_monitoring/src/java/org/lamsfoundation/lams/monitoring/service/MonitoringService.java	(.../MonitoringService.java)	(revision abe8b6d5222e4efc0e5bb332066d481f50d38e8c)
+++ lams_monitoring/src/java/org/lamsfoundation/lams/monitoring/service/MonitoringService.java	(.../MonitoringService.java)	(revision 3438d5b8ee54bba2e782f62d77db620df3e0faef)
@@ -61,6 +61,8 @@
 import org.lamsfoundation.lams.lesson.LessonClass;
 import org.lamsfoundation.lams.lesson.dao.ILessonClassDAO;
 import org.lamsfoundation.lams.lesson.dao.ILessonDAO;
+import org.lamsfoundation.lams.lesson.dto.LessonDetailsDTO;
+import org.lamsfoundation.lams.lesson.service.ILessonService;
 import org.lamsfoundation.lams.monitoring.MonitoringConstants;
 import org.lamsfoundation.lams.tool.ToolSession;
 import org.lamsfoundation.lams.tool.exception.DataMissingException;
@@ -125,6 +127,7 @@
     private IGroupingDAO groupingDAO;
     private IAuthoringService authoringService;
     private ILearnerService learnerService;
+    private ILessonService lessonService;
     private ILamsCoreToolService lamsCoreToolService;
     private IUserManagementService userManagementService;
     private Scheduler scheduler;
@@ -176,6 +179,13 @@
 	public void setLearnerService(ILearnerService learnerService) {
 		this.learnerService = learnerService;
 	}
+	/**
+	 * 
+	 * @param lessonService
+	 */
+	public void setLessonService(ILessonService lessonService) {
+		this.lessonService = lessonService;
+	}
     /**
      * @param authoringService The authoringService to set.
      */
@@ -767,7 +777,7 @@
             			learnerService.performGrouping(lessonId, groupActivity);
 //            			grouping = groupActivity.getCreateGrouping();
 //            			myGroup = grouping.getGroupBy(learner);
-            			learnerService.completeActivity(learner,activity,newLesson);
+            			learnerService.completeActivity(learner.getUserId(),activity,newLesson);
             			log.debug("Grouping activity [" + activity.getActivityId() + "] is completed.");
             		}else{
 	            		//except random grouping, stop here
@@ -776,14 +786,14 @@
             		}
             	}else{
             		//if group already exist
-            		learnerService.completeActivity(learner,activity,newLesson);
+            		learnerService.completeActivity(learner.getUserId(),activity,newLesson);
             		log.debug("Grouping activity [" + activity.getActivityId() + "] is completed.");
             	}
             }else if ( activity.isGateActivity() ) {
             	GateActivity gate = (GateActivity) activity;
             	if(learnerService.knockGate(lessonId,gate,learner)){
             		//the gate is opened, continue to next activity to complete
-            		learnerService.completeActivity(learner,activity,newLesson);
+            		learnerService.completeActivity(learner.getUserId(),activity,newLesson);
             		log.debug("Gate activity [" + gate.getActivityId() + "] is completed.");
             	}else{
             		//the gate is closed, stop here
@@ -796,7 +806,7 @@
             		ToolActivity toolActivity = (ToolActivity) activity;
             		try {
 						ToolSession toolSession = lamsCoreToolService.getToolSessionByActivity(learner,toolActivity);
-						learnerService.completeToolSession(toolSession.getToolSessionId(),new Long(learnerId.intValue()));
+						learnerService.completeToolSession(toolSession.getToolSessionId(),new Long(learnerId.longValue()));
 						log.debug("Tool activity [" + activity.getActivityId() + "] is completed.");
 					} catch (LamsToolServiceException e) {
 						throw new MonitoringServiceException(e);
@@ -839,10 +849,10 @@
      * @see org.lamsfoundation.lams.monitoring.service.IMonitoringService#getLessonDetails(java.lang.Long)
      */
     public String getLessonDetails(Long lessonID)throws IOException{
-    	Lesson lesson = lessonDAO.getLesson(lessonID);
+    	LessonDetailsDTO dto = lessonService.getLessonDetails(lessonID);
     	FlashMessage flashMessage;
-    	if(lesson!=null){
-    		flashMessage = new FlashMessage("getLessonDetails",lesson.getLessonDetails());
+    	if(dto!=null){
+    		flashMessage = new FlashMessage("getLessonDetails",dto);
     	}else
     		flashMessage = new FlashMessage("getLessonDetails",
     										messageService.getMessage("NO.SUCH.LESSON",new Object[]{lessonID}),