Issue #427 initial role based event handling

Change-Id: I73d4df3f09c7cfa60025142ec5a4dccdad4423bb

Former-commit-id: e76039c56e [formerly bac31f3613] [formerly 4d7a53c583] [formerly 619d19e24c [formerly 4d7a53c583 [formerly b752ced02d726771a6e11a9982967a892d2e55f3]]]
Former-commit-id: 619d19e24c
Former-commit-id: 4440838cbe883a84c237cc8d0f49c75f814df106 [formerly 62b16fef0d]
Former-commit-id: 998c9df260

cave/com.raytheon.uf.viz.collaboration.ui/plugin.xml

@@ -131,4 +131,13 @@
          </command>
       </menuContribution>
    </extension>
+   <extension
+         point="org.eclipse.ui.editors">
+      <editor
+            class="com.raytheon.uf.viz.collaboration.ui.editor.CollaborationEditor"
+            default="true"
+            id="com.raytheon.uf.viz.collaboration.ui.editor.CollaborationEditor"
+            name="Map">
+      </editor>
+   </extension>
 </plugin>

cave/com.raytheon.uf.viz.collaboration.ui/src/com/raytheon/uf/viz/collaboration/ui/editor/EditorSetup.java

@@ -104,7 +104,8 @@ public class EditorSetup {
         return se;
     }
 
-    public static void createEditor(SharedEditor sharedEditor) {
+    public static CollaborationEditor createEditor(SharedEditor sharedEditor) {
+        CollaborationEditor editor = null;
         AbstractRenderableDisplay[] displays = new AbstractRenderableDisplay[1];
         try {
             // TODO make it work with any IDescriptor and
@@ -133,12 +134,12 @@ public class EditorSetup {
             disp.setExtent(extent);
 
             displays[0] = disp;
-            UiUtil.createEditor(CollaborationEditor.EDITOR_ID, displays);
+            editor = (CollaborationEditor) UiUtil.createEditor(
+                    CollaborationEditor.EDITOR_ID, displays);
         } catch (VizException e) {
-            // TODO Auto-generated catch block. Please revise as appropriate.
             statusHandler.handle(Priority.PROBLEM, e.getLocalizedMessage(), e);
         }
-
+        return editor;
     }
 
     // TODO delete

cave/com.raytheon.uf.viz.collaboration.ui/src/com/raytheon/uf/viz/collaboration/ui/editor/SharedEditor.java

@@ -32,6 +32,7 @@ import org.geotools.coverage.grid.GeneralGridGeometry;
 import com.raytheon.uf.common.serialization.ISerializableObject;
 import com.raytheon.uf.common.serialization.adapters.GridGeometryAdapter;
 import com.raytheon.uf.common.serialization.adapters.JTSEnvelopeAdapter;
+import com.raytheon.uf.viz.collaboration.comm.identity.event.IInitData;
 import com.raytheon.uf.viz.core.drawables.ResourcePair;
 import com.vividsolutions.jts.geom.Envelope;
 
@@ -55,7 +56,7 @@ import com.vividsolutions.jts.geom.Envelope;
 
 @XmlAccessorType(XmlAccessType.NONE)
 @XmlRootElement
-public class SharedEditor implements ISerializableObject {
+public class SharedEditor implements ISerializableObject, IInitData {
 
     /** The geometry of the descriptor */
     private GeneralGridGeometry geometry;

cave/com.raytheon.uf.viz.collaboration.ui/src/com/raytheon/uf/viz/collaboration/ui/role/AbstractRoleEventController.java

@@ -0,0 +1,60 @@
+/**
+ * This software was developed and / or modified by Raytheon Company,
+ * pursuant to Contract DG133W-05-CQ-1067 with the US Government.
+ * 
+ * U.S. EXPORT CONTROLLED TECHNICAL DATA
+ * This software product contains export-restricted data whose
+ * export/transfer/disclosure is restricted by U.S. law. Dissemination
+ * to non-U.S. persons whether in the United States or abroad requires
+ * an export license or other authorization.
+ * 
+ * Contractor Name:        Raytheon Company
+ * Contractor Address:     6825 Pine Street, Suite 340
+ *                         Mail Stop B8
+ *                         Omaha, NE 68106
+ *                         402.291.0100
+ * 
+ * See the AWIPS II Master Rights File ("Master Rights File.pdf") for
+ * further licensing information.
+ **/
+package com.raytheon.uf.viz.collaboration.ui.role;
+
+import com.raytheon.uf.viz.collaboration.comm.provider.session.VenueSession;
+
+/**
+ * TODO Add Description
+ * 
+ * <pre>
+ * 
+ * SOFTWARE HISTORY
+ * 
+ * Date         Ticket#    Engineer    Description
+ * ------------ ---------- ----------- --------------------------
+ * Mar 26, 2012            njensen     Initial creation
+ * 
+ * </pre>
+ * 
+ * @author njensen
+ * @version 1.0
+ */
+
+public abstract class AbstractRoleEventController implements
+        IRoleEventController {
+
+    protected VenueSession session;
+
+    protected AbstractRoleEventController(VenueSession session) {
+        this.session = session;
+    }
+
+    @Override
+    public void startup() {
+        session.registerEventHandler(this);
+    }
+
+    @Override
+    public void shutdown() {
+        session.unRegisterEventHandler(this);
+    }
+
+}

cave/com.raytheon.uf.viz.collaboration.ui/src/com/raytheon/uf/viz/collaboration/ui/role/DataProviderEventController.java

@@ -0,0 +1,82 @@
+/**
+ * This software was developed and / or modified by Raytheon Company,
+ * pursuant to Contract DG133W-05-CQ-1067 with the US Government.
+ * 
+ * U.S. EXPORT CONTROLLED TECHNICAL DATA
+ * This software product contains export-restricted data whose
+ * export/transfer/disclosure is restricted by U.S. law. Dissemination
+ * to non-U.S. persons whether in the United States or abroad requires
+ * an export license or other authorization.
+ * 
+ * Contractor Name:        Raytheon Company
+ * Contractor Address:     6825 Pine Street, Suite 340
+ *                         Mail Stop B8
+ *                         Omaha, NE 68106
+ *                         402.291.0100
+ * 
+ * See the AWIPS II Master Rights File ("Master Rights File.pdf") for
+ * further licensing information.
+ **/
+package com.raytheon.uf.viz.collaboration.ui.role;
+
+import com.google.common.eventbus.Subscribe;
+import com.raytheon.uf.common.status.IUFStatusHandler;
+import com.raytheon.uf.common.status.UFStatus;
+import com.raytheon.uf.common.status.UFStatus.Priority;
+import com.raytheon.uf.viz.collaboration.comm.identity.CollaborationException;
+import com.raytheon.uf.viz.collaboration.comm.identity.event.ParticipantEventType;
+import com.raytheon.uf.viz.collaboration.comm.provider.event.VenueParticipantEvent;
+import com.raytheon.uf.viz.collaboration.comm.provider.session.VenueSession;
+import com.raytheon.uf.viz.collaboration.ui.editor.EditorSetup;
+import com.raytheon.uf.viz.collaboration.ui.editor.SharedEditor;
+import com.raytheon.viz.ui.VizWorkbenchManager;
+import com.raytheon.viz.ui.editor.AbstractEditor;
+
+/**
+ * Handles the events of a session that are specific to the Data Provider role.
+ * 
+ * 
+ * <pre>
+ * 
+ * SOFTWARE HISTORY
+ * 
+ * Date         Ticket#    Engineer    Description
+ * ------------ ---------- ----------- --------------------------
+ * Mar 26, 2012            njensen     Initial creation
+ * 
+ * </pre>
+ * 
+ * @author njensen
+ * @version 1.0
+ */
+
+public class DataProviderEventController extends AbstractRoleEventController {
+
+    private static final transient IUFStatusHandler statusHandler = UFStatus
+            .getHandler(DataProviderEventController.class);
+
+    private VenueSession session;
+
+    public DataProviderEventController(VenueSession session) {
+        super(session);
+    }
+
+    @Subscribe
+    public void participantChanged(VenueParticipantEvent event) {
+        if (event.getEventType().equals(ParticipantEventType.ARRIVED)) {
+            // TODO instead of going to active editor, should get ones
+            // specifically shared with this session
+            AbstractEditor editor = (AbstractEditor) VizWorkbenchManager
+                    .getInstance().getActiveEditor();
+            SharedEditor se = EditorSetup.extractSharedEditor(editor);
+            try {
+                session.sendInitData(event.getParticipant(), se);
+            } catch (CollaborationException e) {
+                statusHandler.handle(Priority.PROBLEM,
+                        "Error sending initialization data to new participant "
+                                + event.getParticipant().getName(), e);
+            }
+        }
+    }
+
+}

cave/com.raytheon.uf.viz.collaboration.ui/src/com/raytheon/uf/viz/collaboration/ui/role/IRoleEventController.java

@@ -0,0 +1,46 @@
+/**
+ * This software was developed and / or modified by Raytheon Company,
+ * pursuant to Contract DG133W-05-CQ-1067 with the US Government.
+ * 
+ * U.S. EXPORT CONTROLLED TECHNICAL DATA
+ * This software product contains export-restricted data whose
+ * export/transfer/disclosure is restricted by U.S. law. Dissemination
+ * to non-U.S. persons whether in the United States or abroad requires
+ * an export license or other authorization.
+ * 
+ * Contractor Name:        Raytheon Company
+ * Contractor Address:     6825 Pine Street, Suite 340
+ *                         Mail Stop B8
+ *                         Omaha, NE 68106
+ *                         402.291.0100
+ * 
+ * See the AWIPS II Master Rights File ("Master Rights File.pdf") for
+ * further licensing information.
+ **/
+package com.raytheon.uf.viz.collaboration.ui.role;
+
+
+/**
+ * TODO Add Description
+ * 
+ * <pre>
+ * 
+ * SOFTWARE HISTORY
+ * 
+ * Date         Ticket#    Engineer    Description
+ * ------------ ---------- ----------- --------------------------
+ * Mar 26, 2012            njensen     Initial creation
+ * 
+ * </pre>
+ * 
+ * @author njensen
+ * @version 1.0
+ */
+
+public interface IRoleEventController {
+
+    public void startup();
+
+    public void shutdown();
+
+}

cave/com.raytheon.uf.viz.collaboration.ui/src/com/raytheon/uf/viz/collaboration/ui/role/ParticipantEventController.java

@@ -0,0 +1,67 @@
+/**
+ * This software was developed and / or modified by Raytheon Company,
+ * pursuant to Contract DG133W-05-CQ-1067 with the US Government.
+ * 
+ * U.S. EXPORT CONTROLLED TECHNICAL DATA
+ * This software product contains export-restricted data whose
+ * export/transfer/disclosure is restricted by U.S. law. Dissemination
+ * to non-U.S. persons whether in the United States or abroad requires
+ * an export license or other authorization.
+ * 
+ * Contractor Name:        Raytheon Company
+ * Contractor Address:     6825 Pine Street, Suite 340
+ *                         Mail Stop B8
+ *                         Omaha, NE 68106
+ *                         402.291.0100
+ * 
+ * See the AWIPS II Master Rights File ("Master Rights File.pdf") for
+ * further licensing information.
+ **/
+package com.raytheon.uf.viz.collaboration.ui.role;
+
+import com.google.common.eventbus.Subscribe;
+import com.raytheon.uf.common.status.IUFStatusHandler;
+import com.raytheon.uf.common.status.UFStatus;
+import com.raytheon.uf.viz.collaboration.comm.identity.event.IInitData;
+import com.raytheon.uf.viz.collaboration.comm.provider.session.VenueSession;
+import com.raytheon.uf.viz.collaboration.ui.editor.CollaborationEditor;
+import com.raytheon.uf.viz.collaboration.ui.editor.EditorSetup;
+import com.raytheon.uf.viz.collaboration.ui.editor.SharedEditor;
+
+/**
+ * Handles the events of a session that are specific to the Participant role.
+ * 
+ * <pre>
+ * 
+ * SOFTWARE HISTORY
+ * 
+ * Date         Ticket#    Engineer    Description
+ * ------------ ---------- ----------- --------------------------
+ * Mar 26, 2012            njensen     Initial creation
+ * 
+ * </pre>
+ * 
+ * @author njensen
+ * @version 1.0
+ */
+
+public class ParticipantEventController extends AbstractRoleEventController {
+
+    private static final transient IUFStatusHandler statusHandler = UFStatus
+            .getHandler(ParticipantEventController.class);
+
+    public ParticipantEventController(VenueSession session) {
+        super(session);
+    }
+
+    @Subscribe
+    public void initDataArrived(IInitData initData) {
+        if (initData instanceof SharedEditor) {
+            SharedEditor se = (SharedEditor) initData;
+            CollaborationEditor editor = EditorSetup.createEditor(se);
+            // TODO need to send the editor somewhere so it can be tied to the
+            // session for the link to editor capability
+        }
+    }
+
+}

cave/com.raytheon.uf.viz.collaboration/src/com/raytheon/uf/viz/collaboration/comm/identity/ISharedDisplaySession.java

@@ -21,6 +21,7 @@ package com.raytheon.uf.viz.collaboration.comm.identity;
 
 import com.raytheon.uf.viz.collaboration.comm.identity.event.IDisplayEvent;
 import com.raytheon.uf.viz.collaboration.comm.identity.event.IEventPublisher;
+import com.raytheon.uf.viz.collaboration.comm.identity.event.IInitData;
 import com.raytheon.uf.viz.collaboration.comm.identity.event.IRenderable;
 import com.raytheon.uf.viz.collaboration.comm.identity.user.IChatID;
 import com.raytheon.uf.viz.collaboration.comm.identity.user.IQualifiedID;
@@ -38,8 +39,7 @@ import com.raytheon.uf.viz.collaboration.comm.identity.user.ParticipantRole;
  * venue.</li>
  * <li><strong>TextMessage</strong> : Text messages send between users. Meant to
  * be displayed as conversation.</li>
- * <li><strong>IDisplayEvent</strong> : These messages are CAVE to CAVE
+ * <li><strong>IDisplayEvent</strong> : These messages are CAVE to CAVE events</li>
- * events</li>
  * <li><strong>IRenderable</strong> : These messages are CAVE to CAVE
  * display......</li>
  * 
@@ -61,33 +61,35 @@ import com.raytheon.uf.viz.collaboration.comm.identity.user.ParticipantRole;
  */
 
 public interface ISharedDisplaySession extends IEventPublisher {
-    
+
     /**
      * Send a single initialization object to a participant who has joined an
-     * in-progress collaboration session. 
+     * in-progress collaboration session.
      * 
      * @param participant
      * @param initData
      */
-    void sendInitData(IChatID participant, Object initData) throws CollaborationException;
+    void sendInitData(IChatID participant, IInitData initData)
-    
+            throws CollaborationException;
+
     /**
      * 
      * @param event
      */
     void sendEvent(IDisplayEvent event) throws CollaborationException;
-    
+
     /**
      * 
      */
-    void sendRenderableObject(IRenderable renderable) throws CollaborationException;
+    void sendRenderableObject(IRenderable renderable)
+            throws CollaborationException;
 
     /**
      * 
      * @return
      */
     IChatID getCurrentDataProvider();
-    
+
     /**
      * 
      * @return
@@ -100,22 +102,24 @@ public interface ISharedDisplaySession extends IEventPublisher {
      * @return
      */
     boolean hasRole(ParticipantRole role);
-    
+
     /**
      * 
      * @return
      */
     IQualifiedID getUserID();
-    
+
     /**
      * Gets the connection status of the session.
+     * 
      * @return The connection status.
      */
     boolean isConnected();
-    
+
     /**
      * Get the session identifier.
-     * @return The session identifier. 
+     * 
+     * @return The session identifier.
      */
     String getSessionId();
 

cave/com.raytheon.uf.viz.collaboration/src/com/raytheon/uf/viz/collaboration/comm/identity/event/IInitData.java

@@ -0,0 +1,41 @@
+/**
+ * This software was developed and / or modified by Raytheon Company,
+ * pursuant to Contract DG133W-05-CQ-1067 with the US Government.
+ * 
+ * U.S. EXPORT CONTROLLED TECHNICAL DATA
+ * This software product contains export-restricted data whose
+ * export/transfer/disclosure is restricted by U.S. law. Dissemination
+ * to non-U.S. persons whether in the United States or abroad requires
+ * an export license or other authorization.
+ * 
+ * Contractor Name:        Raytheon Company
+ * Contractor Address:     6825 Pine Street, Suite 340
+ *                         Mail Stop B8
+ *                         Omaha, NE 68106
+ *                         402.291.0100
+ * 
+ * See the AWIPS II Master Rights File ("Master Rights File.pdf") for
+ * further licensing information.
+ **/
+package com.raytheon.uf.viz.collaboration.comm.identity.event;
+
+/**
+ * TODO Add Description
+ * 
+ * <pre>
+ *
+ * SOFTWARE HISTORY
+ *
+ * Date         Ticket#    Engineer    Description
+ * ------------ ---------- ----------- --------------------------
+ * Mar 26, 2012            njensen     Initial creation
+ *
+ * </pre>
+ *
+ * @author njensen
+ * @version 1.0	
+ */
+
+public interface IInitData {
+
+}

cave/com.raytheon.uf.viz.collaboration/src/com/raytheon/uf/viz/collaboration/comm/provider/session/VenueSession.java

@@ -20,24 +20,19 @@
 package com.raytheon.uf.viz.collaboration.comm.provider.session;
 
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.Collections;
 import java.util.EnumSet;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.UUID;
 
 import org.eclipse.ecf.core.IContainer;
 import org.eclipse.ecf.core.identity.ID;
 import org.eclipse.ecf.core.identity.IDFactory;
-import org.eclipse.ecf.core.identity.Namespace;
 import org.eclipse.ecf.core.user.IUser;
 import org.eclipse.ecf.core.util.ECFException;
 import org.eclipse.ecf.presence.IIMMessageEvent;
 import org.eclipse.ecf.presence.IIMMessageListener;
-import org.eclipse.ecf.presence.IPresenceContainerAdapter;
-import org.eclipse.ecf.presence.IPresenceSender;
 import org.eclipse.ecf.presence.chatroom.IChatRoomContainer;
 import org.eclipse.ecf.presence.chatroom.IChatRoomInfo;
 import org.eclipse.ecf.presence.chatroom.IChatRoomInvitationSender;
@@ -46,7 +41,6 @@ import org.eclipse.ecf.presence.chatroom.IChatRoomMessage;
 import org.eclipse.ecf.presence.chatroom.IChatRoomMessageEvent;
 import org.eclipse.ecf.presence.chatroom.IChatRoomMessageSender;
 import org.eclipse.ecf.presence.chatroom.IChatRoomParticipantListener;
-import org.eclipse.ecf.presence.im.IChatMessage;
 import org.eclipse.ecf.provider.xmpp.identity.XMPPRoomID;
 
 import com.google.common.eventbus.EventBus;
@@ -57,6 +51,7 @@ import com.raytheon.uf.viz.collaboration.comm.identity.IPresence;
 import com.raytheon.uf.viz.collaboration.comm.identity.ISharedDisplaySession;
 import com.raytheon.uf.viz.collaboration.comm.identity.IVenueSession;
 import com.raytheon.uf.viz.collaboration.comm.identity.event.IDisplayEvent;
+import com.raytheon.uf.viz.collaboration.comm.identity.event.IInitData;
 import com.raytheon.uf.viz.collaboration.comm.identity.event.IRenderable;
 import com.raytheon.uf.viz.collaboration.comm.identity.event.IVenueParticipantEvent;
 import com.raytheon.uf.viz.collaboration.comm.identity.event.ParticipantEventType;
@@ -65,7 +60,6 @@ import com.raytheon.uf.viz.collaboration.comm.identity.listener.IInvitation;
 import com.raytheon.uf.viz.collaboration.comm.identity.listener.IMessageFilter;
 import com.raytheon.uf.viz.collaboration.comm.identity.listener.IMessageListener;
 import com.raytheon.uf.viz.collaboration.comm.identity.listener.IPresenceListener;
-import com.raytheon.uf.viz.collaboration.comm.identity.listener.IVenueParticipantListener;
 import com.raytheon.uf.viz.collaboration.comm.identity.user.IChatID;
 import com.raytheon.uf.viz.collaboration.comm.identity.user.IQualifiedID;
 import com.raytheon.uf.viz.collaboration.comm.identity.user.IVenueParticipant;
@@ -231,22 +225,23 @@ public class VenueSession extends BaseSession implements IVenueSession,
         } finally {
             initListeners();
         }
-        
+
         Runnable r = new Runnable() {
             @Override
             public void run() {
-                for(int i = 0;i < 10;i++) {
+                for (int i = 0; i < 10; i++) {
 
                     IRenderable r = new TestObject("Test1");
                     ((TestObject) r).setValue(i);
-                    
+
                     try {
                         System.out.println("Sending renderable " + i);
                         sendRenderableObject(r);
-                        if(i == 5) {
+                        if (i == 5) {
-                            sendTextMessage(Tools.marshallData("This is a text message as a String"));
+                            sendTextMessage(Tools
+                                    .marshallData("This is a text message as a String"));
                         }
-                        
+
                     } catch (CollaborationException ce) {
                         ce.printStackTrace();
                     }
@@ -259,18 +254,20 @@ public class VenueSession extends BaseSession implements IVenueSession,
         };
         Thread t = new Thread(r);
         t.start();
-        
+
         registerEventHandler(this);
     }
 
     @Subscribe
     public void handle(IRenderable renderable) {
-        System.out.println("IRenderable " + renderable.getClass().getName() + " was received");
+        System.out.println("IRenderable " + renderable.getClass().getName()
+                + " was received");
     }
-    
+
     @Subscribe
     public void handle(IDisplayEvent event) {
-        System.out.println("IDisplayEvent " + event.getClass().getName() + " was received");
+        System.out.println("IDisplayEvent " + event.getClass().getName()
+                + " was received");
     }
 
     @Subscribe
@@ -280,9 +277,10 @@ public class VenueSession extends BaseSession implements IVenueSession,
 
     @Subscribe
     public void handle(IVenueParticipantEvent event) {
-        System.out.println("IVenueParticipantEvent " + event.getEventType() + " was received");
+        System.out.println("IVenueParticipantEvent " + event.getEventType()
+                + " was received");
     }
-    
+
     /**
      * 
      * @throws ECFException
@@ -630,18 +628,10 @@ public class VenueSession extends BaseSession implements IVenueSession,
     // ISharedDisplaySession
     // ***************************
 
-    /**
-     * 
-     * @param
-     * @param
-     * @throws CollaborationException
-     * @see com.raytheon.uf.viz.collaboration.comm.identity.ISharedDisplaySession#sendInitData(com.raytheon.uf.viz.collaboration.comm.identity.user.IChatID,
-     *      java.lang.Object)
-     */
     @Override
     public void sendInitData(
             com.raytheon.uf.viz.collaboration.comm.identity.user.IChatID participant,
-            Object initData) throws CollaborationException {
+            IInitData initData) throws CollaborationException {
 
         PeerToPeerChat session = null;
         session = getP2PSession();
@@ -663,7 +653,7 @@ public class VenueSession extends BaseSession implements IVenueSession,
     public void sendEvent(IDisplayEvent event) throws CollaborationException {
         if (event != null) {
             String message = Tools.marshallData(event);
-            if(message != null) {
+            if (message != null) {
                 sendTextMessage(message);
             }
         }
@@ -679,7 +669,7 @@ public class VenueSession extends BaseSession implements IVenueSession,
             throws CollaborationException {
         if (renderable != null) {
             String message = Tools.marshallData(renderable);
-            if(message != null) {
+            if (message != null) {
                 sendTextMessage(message);
             }
         }
@@ -687,7 +677,8 @@ public class VenueSession extends BaseSession implements IVenueSession,
 
     /**
      * Get the identification of the user who is the DataProvider.
-     * @return The DataProvider user identification. 
+     * 
+     * @return The DataProvider user identification.
      * @see com.raytheon.uf.viz.collaboration.comm.identity.ISharedDisplaySession#getCurrentDataProvider()
      */
     @Override
@@ -697,6 +688,7 @@ public class VenueSession extends BaseSession implements IVenueSession,
 
     /**
      * Get the identification of the user who is the Session Leader.
+     * 
      * @return The Session Leader user identification.
      * @see com.raytheon.uf.viz.collaboration.comm.identity.ISharedDisplaySession#getCurrentSessionLeader()
      */
@@ -773,10 +765,10 @@ public class VenueSession extends BaseSession implements IVenueSession,
                     Object o = null;
                     try {
                         o = Tools.unMarshallData(body);
-                        if(o != null) {
+                        if (o != null) {
                             getEventPublisher().post(o);
                         }
-                    } catch(CollaborationException ce) {
+                    } catch (CollaborationException ce) {
                         // TODO : more robust!!
                         ce.printStackTrace();
                     }