diff --git a/plugins/org.eclipse.jem.util/jemutil/org/eclipse/jem/internal/util/emf/workbench/ProjectResourceSetImpl.java b/plugins/org.eclipse.jem.util/jemutil/org/eclipse/jem/internal/util/emf/workbench/ProjectResourceSetImpl.java
index 452e4d2..20021eb 100644
--- a/plugins/org.eclipse.jem.util/jemutil/org/eclipse/jem/internal/util/emf/workbench/ProjectResourceSetImpl.java
+++ b/plugins/org.eclipse.jem.util/jemutil/org/eclipse/jem/internal/util/emf/workbench/ProjectResourceSetImpl.java
@@ -10,18 +10,16 @@
  *******************************************************************************/
 /*
  *  $$RCSfile: ProjectResourceSetImpl.java,v $$
- *  $$Revision: 1.5 $$  $$Date: 2005/02/03 22:47:35 $$ 
+ *  $$Revision: 1.6 $$  $$Date: 2005/02/04 23:12:28 $$ 
  */
 package org.eclipse.jem.internal.util.emf.workbench;
 
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 import org.eclipse.core.resources.IProject;
+import org.eclipse.emf.common.notify.Notification;
+import org.eclipse.emf.common.notify.impl.NotificationImpl;
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.resource.Resource;
@@ -29,9 +27,8 @@
 import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
 import org.eclipse.emf.ecore.resource.impl.URIConverterImpl;
 import org.eclipse.emf.ecore.xmi.XMLResource;
-import org.eclipse.jem.util.emf.workbench.ProjectResourceSet;
-import org.eclipse.jem.util.emf.workbench.ResourceHandler;
-import org.eclipse.jem.util.emf.workbench.ResourceSetWorkbenchSynchronizer;
+
+import org.eclipse.jem.util.emf.workbench.*;
 import org.eclipse.jem.util.emf.workbench.nature.EMFNature;
 import org.eclipse.jem.util.logger.proxy.Logger;
 import org.eclipse.jem.util.plugin.JEMUtilPlugin;
@@ -42,10 +39,8 @@
 	protected List resourceHandlers = new ArrayList();
 	protected ResourceSetWorkbenchSynchronizer synchronizer;
 	protected ProjectResourceSetImpl() {
-		HashMap resourceMap = new HashMap(10);
-		resourceMap.put(XMLResource.OPTION_USE_PARSER_POOL, EMFNature.SHARED_PARSER_POOL);
-		loadOptions = resourceMap;
 		setURIResourceMap(new HashMap(10));	// Tell it to cache uri->resource access.
+		getLoadOptions().put(XMLResource.OPTION_USE_PARSER_POOL, EMFNature.SHARED_PARSER_POOL);
 	}
 	public ProjectResourceSetImpl(IProject aProject) {
 		this();
@@ -117,7 +112,26 @@
 		}
 		return null;
 	}
+	
 	public void release() {
+		// Send out notification of release.
+		if (eNotificationRequired()) {
+			eNotify(new NotificationImpl(SPECIAL_NOTIFICATION_TYPE, null, null, Notification.NO_INDEX, false) {
+				/* (non-Javadoc)
+				 * @see org.eclipse.emf.common.notify.impl.NotificationImpl#getFeatureID(java.lang.Class)
+				 */
+				public int getFeatureID(Class expectedClass) {
+					return PROJECTRESOURCESET_ABOUT_TO_RELEASE_ID;
+				}
+				
+				/* (non-Javadoc)
+				 * @see org.eclipse.emf.common.notify.impl.NotificationImpl#getNotifier()
+				 */
+				public Object getNotifier() {
+					return ProjectResourceSetImpl.this;
+				}
+			});
+		}
 		setIsReleasing(true);
 		if (synchronizer != null)
 			synchronizer.dispose();
diff --git a/plugins/org.eclipse.jem.util/jemutil/org/eclipse/jem/util/emf/workbench/ProjectResourceSet.java b/plugins/org.eclipse.jem.util/jemutil/org/eclipse/jem/util/emf/workbench/ProjectResourceSet.java
index ba38087..db076db 100644
--- a/plugins/org.eclipse.jem.util/jemutil/org/eclipse/jem/util/emf/workbench/ProjectResourceSet.java
+++ b/plugins/org.eclipse.jem.util/jemutil/org/eclipse/jem/util/emf/workbench/ProjectResourceSet.java
@@ -10,22 +10,48 @@
  *******************************************************************************/
 /*
  *  $$RCSfile: ProjectResourceSet.java,v $$
- *  $$Revision: 1.1 $$  $$Date: 2005/01/07 20:19:23 $$ 
+ *  $$Revision: 1.2 $$  $$Date: 2005/02/04 23:12:01 $$ 
  */
 package org.eclipse.jem.util.emf.workbench;
 
 import org.eclipse.core.resources.IProject;
+import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.ecore.resource.ResourceSet;
 
 /**
  * A ResourceSet for an entire project. It allows sharing of resources from multiple editors/viewers for a project.
+ * <p>
+ * An additional Notification type is sent out by ProjectResourceSet's of project resource set about to be released. A release is
+ * called when projects are about to be closed. They release all of the resources and unload them. This notification can be used 
+ * to know that this is about to happen and to do something before the resources become invalid. It will be sent out just before the
+ * resource set will be released. 
  * 
+ * @see ProjectResourceSet#SPECIAL_NOTIFICATION_TYPE
+ * @see ProjectResourceSet#PROJECTRESOURCESET_ABOUT_TO_RELEASE_ID 
  * @since 1.0.0
  */
 
 public interface ProjectResourceSet extends ResourceSet {
 
 	IProject getProject();
+	
+	/**
+	 * Notification type in notifications from the ProjectResourceSet for
+	 * special notifications, and not the standard ones from ResourceSet.
+	 * 
+	 * @see org.eclipse.emf.common.notify.Notification#getEventType()
+	 * @since 1.1.0
+	 */
+	static int SPECIAL_NOTIFICATION_TYPE = Notification.EVENT_TYPE_COUNT+4;
+	
+	/**
+	 * Notification Feature ID for resource set about to be released.
+	 * Use {@link org.eclipse.emf.common.notify.Notification#getFeatureID(java.lang.Class)} to
+	 * get this id. The getFeature() on notification will return null.
+	 * 
+	 * @since 1.1.0
+	 */
+	static int PROJECTRESOURCESET_ABOUT_TO_RELEASE_ID = 1000;
 
 	/**
 	 * Call when the ResourceSet is no longer to be used.