Index: lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Activity.hbm.xml
===================================================================
RCS file: /usr/local/cvsroot/lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Activity.hbm.xml,v
diff -u -r1.3 -r1.4
--- lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Activity.hbm.xml	2 Feb 2005 00:54:27 -0000	1.3
+++ lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Activity.hbm.xml	7 Feb 2005 05:08:44 -0000	1.4
@@ -125,11 +125,20 @@
 			<subclass name="org.lamsfoundation.lams.learningdesign.ToolActivity" discriminator-value="1" >
 				<meta attribute="class-description" inherit="false">@hibernate.class </meta>
 				<property name="toolContentId" type="java.lang.Long" column="tool_content_id" length="20" />
+				
+				<set name="toolSessions" lazy="false" inverse="true" cascade="none" >
+			        <meta attribute="field-description">@hibernate.set lazy="false" inverse="true" cascade="none"
+        												@hibernate.collection-key column="tool_session_id"
+        										        @hibernate.collection-one-to-many class="org.lamsfoundation.lams.tool.ToolSession"
+			        </meta>
+			        <key><column name="tool_session_id" /></key>
+			        <one-to-many class="org.lamsfoundation.lams.tool.ToolSession"/>
+			    </set>
                  
                  <!-- bi-directional many-to-one association to Tool-->
                  <many-to-one name="tool" class="org.lamsfoundation.lams.tool.Tool" >
                  	<column name="tool_id" not-null="false"/>
-                 </many-to-one>
+                 </many-to-one>                 
 			</subclass>
 			
 			<subclass name="org.lamsfoundation.lams.learningdesign.GroupingActivity" >
@@ -202,3 +211,5 @@
 
 </class>
 </hibernate-mapping>
+
+    
Index: lams_common/src/java/org/lamsfoundation/lams/learningdesign/ToolActivity.java
===================================================================
RCS file: /usr/local/cvsroot/lams_common/src/java/org/lamsfoundation/lams/learningdesign/ToolActivity.java,v
diff -u -r1.1 -r1.2
--- lams_common/src/java/org/lamsfoundation/lams/learningdesign/ToolActivity.java	28 Jan 2005 04:20:45 -0000	1.1
+++ lams_common/src/java/org/lamsfoundation/lams/learningdesign/ToolActivity.java	7 Feb 2005 05:13:47 -0000	1.2
@@ -1,6 +1,8 @@
 package org.lamsfoundation.lams.learningdesign;
 
 import java.io.Serializable;
+import java.util.Set;
+
 import org.apache.commons.lang.builder.ToStringBuilder;
 
 import org.lamsfoundation.lams.tool.Tool;
@@ -21,6 +23,9 @@
      */
     private Tool tool;
     
+    /** List of sessions associated with this ToolActivity */
+    private Set toolSessions;
+    
     /** full constructor */
     public ToolActivity(Long activityId,
             Integer id,
@@ -143,4 +148,16 @@
         this.tool = tool;
     }
     
+	/**
+	 * @return Returns the toolSessions.
+	 */
+	public Set getToolSessions() {
+		return toolSessions;
+	}
+	/**
+	 * @param toolSessions The toolSessions to set.
+	 */
+	public void setToolSessions(Set toolSessions) {
+		this.toolSessions = toolSessions;
+	}
 }