2521: Explore the possibility to port the StatMan interface onto Dataminer

https://support.d4science.org/issues/2521

Fixed StartComputationEvent

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/portlets/user/data-miner-manager@128249 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/portlets/user/dataminermanager/client/DataMinerManager.java

@@ -6,11 +6,8 @@ import org.gcube.portlets.user.dataminermanager.client.bean.OperatorsClassificat
 import org.gcube.portlets.user.dataminermanager.client.common.EventBusProvider;
 import org.gcube.portlets.user.dataminermanager.client.dataspace.DataSpacePanel;
 import org.gcube.portlets.user.dataminermanager.client.events.MaskEvent;
-import org.gcube.portlets.user.dataminermanager.client.events.ResubmitComputationEvent;
 import org.gcube.portlets.user.dataminermanager.client.experimentArea.ExperimentPanel;
 import org.gcube.portlets.user.dataminermanager.client.resources.Resources;
-import org.gcube.portlets.user.dataminermanager.client.rpc.DataMinerPortletService;
-import org.gcube.portlets.user.dataminermanager.client.rpc.DataMinerPortletServiceAsync;
 import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
 import org.gcube.portlets.user.dataminermanager.shared.Constants;
 import org.gcube.portlets.user.gcubewidgets.client.ClientScopeHelper;
@@ -47,8 +44,8 @@ import com.sencha.gxt.widget.core.client.container.Viewport;
 public class DataMinerManager implements EntryPoint {
 
 	public static final Resources resources = GWT.create(Resources.class);
-	private static final DataMinerPortletServiceAsync dataMinerService = GWT
-			.create(DataMinerPortletService.class);
+	/*private static final DataMinerPortletServiceAsync dataMinerService = GWT
+			.create(DataMinerPortletService.class);*/
 	private static final String SM_DIV = "contentDiv";
 
 	private static List<OperatorsClassification> operatorsClassifications = null;
@@ -280,16 +277,7 @@ public class DataMinerManager implements EntryPoint {
 		 * });
 		 */
 
-		EventBusProvider.INSTANCE.addHandler(
-				ResubmitComputationEvent.getType(),
-				new ResubmitComputationEvent.ResubmitComputationHandler() {
-					@Override
-					public void onResubmitComputation(
-							ResubmitComputationEvent event) {
-						switchTo(experimentPanel);
-						header.setMenuSelected(MenuItem.EXPERIMENT);
-					}
-				});
+		
 	}
 
 	/**
@@ -422,9 +410,9 @@ public class DataMinerManager implements EntryPoint {
 		return (find == null ? getDefaultOperatorsClassification() : find);
 	}
 
-	public static DataMinerPortletServiceAsync getService() {
+	/*public static DataMinerPortletServiceAsync getService() {
 		return dataMinerService;
-	}
+	}*/
 
 	
 

src/main/java/org/gcube/portlets/user/dataminermanager/client/DataMinerManagerController.java

@@ -1,11 +1,18 @@
 package org.gcube.portlets.user.dataminermanager.client;
 
+import org.gcube.portlets.user.dataminermanager.client.bean.ComputationItem;
 import org.gcube.portlets.user.dataminermanager.client.common.EventBusProvider;
+import org.gcube.portlets.user.dataminermanager.client.events.CancelComputationRequestEvent;
 import org.gcube.portlets.user.dataminermanager.client.events.DataMinerWorkAreaEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.ResubmitComputationExecutionEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.ResubmitComputationExecutionRequestEvent;
 import org.gcube.portlets.user.dataminermanager.client.events.SessionExpiredEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.StartComputationExecutionEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.StartComputationExecutionRequestEvent;
 import org.gcube.portlets.user.dataminermanager.client.rpc.DataMinerPortletServiceAsync;
 import org.gcube.portlets.user.dataminermanager.client.type.DataMinerWorkAreaEventType;
 import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
+import org.gcube.portlets.user.dataminermanager.shared.data.ComputationId;
 import org.gcube.portlets.user.dataminermanager.shared.exception.ExpiredSessionServiceException;
 import org.gcube.portlets.user.dataminermanager.shared.session.UserInfo;
 import org.gcube.portlets.user.dataminermanager.shared.workspace.DataMinerWorkArea;
@@ -104,13 +111,175 @@ public class DataMinerManagerController {
 
 					@Override
 					public void onChange(SessionExpiredEvent event) {
-						Log.debug("Catch Event SessionExpiredEvent");
+						Log.debug("Catch SessionExpiredEvent");
 						sessionExpiredShow();
 
 					}
 				});
+		
+		EventBusProvider.INSTANCE
+		.addHandler(
+				StartComputationExecutionRequestEvent.TYPE,
+				new StartComputationExecutionRequestEvent.StartComputationExecutionRequestEventHandler() {
+
+					@Override
+					public void onStart(
+							StartComputationExecutionRequestEvent event) {
+						Log.debug("Catch StartComputationExecutionRequestEvent");
+						startComputationRequest(event);
+
+					}
+				});
+
+
+		EventBusProvider.INSTANCE
+				.addHandler(
+						CancelComputationRequestEvent.TYPE,
+						new CancelComputationRequestEvent.CancelComputationRequestEventHandler() {
+
+							@Override
+							public void onCancel(
+									CancelComputationRequestEvent event) {
+								Log.debug("Catch CancelComputationRequestEvent");
+								cancelComputationRequest(event);
+
+							}
+						});
+
+		EventBusProvider.INSTANCE
+				.addHandler(
+						ResubmitComputationExecutionRequestEvent.TYPE,
+						new ResubmitComputationExecutionRequestEvent.ResubmitComputationExecutionRequestEventHandler() {
+
+							@Override
+							public void onResubmit(
+									ResubmitComputationExecutionRequestEvent event) {
+								Log.debug("Catch ResubmitComputationExecutionRequestEvent");
+								resubmitComputationRequest(event);
+
+							}
+
+						});
+
+	
+		/*
+		 * EventBusProvider.INSTANCE.addHandler(
+		 * ResubmitComputationEvent.getType(), new
+		 * ResubmitComputationEvent.ResubmitComputationHandler() {
+		 * 
+		 * @Override public void onResubmitComputation( ResubmitComputationEvent
+		 * event) { switchTo(experimentPanel);
+		 * header.setMenuSelected(MenuItem.EXPERIMENT); } });
+		 */
+
+	}
+
+	private void startComputationRequest(
+			final StartComputationExecutionRequestEvent event) {
+
+		DataMinerPortletServiceAsync.INSTANCE.startComputation(event.getOp(),
+				event.getComputationTitle(), event.getComputationDescription(),
+				new AsyncCallback<ComputationId>() {
+					@Override
+					public void onSuccess(ComputationId computationId) {
+						if (computationId == null)
+							UtilsGXT3.alert("Error",
+									"Failed to start computation "
+											+ event.getOp().getName()
+											+ ", the computation id is null");
+						else {
+							startComputation(computationId,
+									event.getComputationStatusPanelIndex());
+						}
+					}
+
+					@Override
+					public void onFailure(Throwable caught) {
+						UtilsGXT3.alert("Error",
+								"Failed to start computation "
+										+ event.getOp().getName()
+										+ "<br/>Cause:" + caught.getCause()
+										+ "<br/>Message:" + caught.getMessage());
+						caught.printStackTrace();
+					}
+				});
+
+	}
+
+	private void startComputation(ComputationId computationId,
+			int computationStatusPanelIndex) {
+		StartComputationExecutionEvent event = new StartComputationExecutionEvent(
+				computationId, computationStatusPanelIndex);
+		EventBusProvider.INSTANCE.fireEvent(event);
+	}
+
+	private void cancelComputationRequest(CancelComputationRequestEvent event) {
+		final ComputationId computationId = event.getComputationId();
+
+		DataMinerPortletServiceAsync.INSTANCE.cancelComputation(computationId,
+				new AsyncCallback<String>() {
+
+					@Override
+					public void onFailure(Throwable caught) {
+						if (caught instanceof ExpiredSessionServiceException) {
+							UtilsGXT3.alert("Error", "Expired Session");
+							EventBusProvider.INSTANCE
+									.fireEvent(new SessionExpiredEvent());
+						} else {
+							UtilsGXT3.alert(
+									"Error",
+									"Error in cancel computation: ComputationId="
+											+ computationId.getId()
+											+ ", Error="
+											+ caught.getLocalizedMessage());
+						}
+
+					}
+
+					@Override
+					public void onSuccess(String result) {
+						Log.debug("Computation Deleted!");
+
+					}
+				});
 	}
 
+	private void resubmitComputationRequest(
+			final ResubmitComputationExecutionRequestEvent event) {
+		DataMinerPortletServiceAsync.INSTANCE.resubmit(event.getComputationId(), new AsyncCallback<ComputationId>() {
+
+			@Override
+			public void onFailure(Throwable caught) {
+				UtilsGXT3.alert("Error",
+						"Failed to resubmit computation "
+								+ event.getComputationId()
+								+ "<br/>Cause:" + caught.getCause()
+								+ "<br/>Message:" + caught.getMessage());
+				
+			}
+
+			@Override
+			public void onSuccess(ComputationId result) {
+				if (result == null)
+					UtilsGXT3
+							.alert("Error",
+									"Failed to resubmit computation, the computation id is null!");
+				else {
+					resubmitComputation(result);
+				}
+				
+			}
+		});	
+	}
+
+	private void resubmitComputation(ComputationId computationId) {
+		ComputationItem computationItem=new ComputationItem(computationId, null);
+		ResubmitComputationExecutionEvent event = new ResubmitComputationExecutionEvent(
+				computationItem);
+		EventBusProvider.INSTANCE.fireEvent(event);
+	}
+	
+	
 	private void retrieveDataMinerWorkArea() {
 		DataMinerPortletServiceAsync.INSTANCE
 				.getDataMinerWorkArea(new AsyncCallback<DataMinerWorkArea>() {
@@ -138,14 +307,12 @@ public class DataMinerManagerController {
 				});
 
 	}
-	
-	
-	private void fireDataMinerWorkAreaEventRetrieved(DataMinerWorkArea result){
+
+	private void fireDataMinerWorkAreaEventRetrieved(DataMinerWorkArea result) {
 		dataMinerWorkArea = result;
 		DataMinerWorkAreaEvent dataMinerWorkAreaEvent = new DataMinerWorkAreaEvent(
 				DataMinerWorkAreaEventType.OPEN, result);
 		eventBus.fireEvent(dataMinerWorkAreaEvent);
 	}
-	
 
 }

src/main/java/org/gcube/portlets/user/dataminermanager/client/bean/ComputationItem.java

@@ -10,18 +10,17 @@ import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
 import org.gcube.portlets.user.dataminermanager.client.bean.output.Resource;
 import org.gcube.portlets.user.dataminermanager.shared.data.ComputationId;
 
+/**
+ * 
+ * @author Giancarlo Panichi email: <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class ComputationItem implements Serializable {
 
-
-
-
-public class ComputationItem implements Serializable{
-	
 	private static final long serialVersionUID = 7948340340190844208L;
 	
-	// force to implement these objects in javascript
 	private ComputationId computationId;
-
-
 	private String id;
 	private String name;
 	private String description;
@@ -34,8 +33,6 @@ public class ComputationItem implements Serializable{
 	private Resource resource;
 	private Operator operator;
 
-	
-	
 	/**
 	 * 
 	 */
@@ -43,41 +40,48 @@ public class ComputationItem implements Serializable{
 		super();
 	}
 	
-	public ComputationItem(ComputationId computationId, String name, String description, 
-			String categoryId, String operatorId, String infrastructure, 
-			Date creationDate, Date endDate, 
+	public ComputationItem(ComputationId computationId, String operatorId) {
+		this.computationId=computationId;
+		this.operatorId=operatorId;
+	}
+	
+	/*
+	public ComputationItem(ComputationId computationId, String name,
+			String description, String categoryId, String operatorId,
+			String infrastructure, Date creationDate, Date endDate,
 			ComputationStatus status, Resource resource) {
 		super();
-		this.computationId=computationId;
-		this.id=computationId.getId();
-		this.name=name;
-		this.description=description;
-		this.categoryId=categoryId;
-		this.operatorId=operatorId;
-		this.infrastructure=infrastructure;
-		this.creationDate=creationDate;
-		this.endDate=endDate;
-		this.status=status;
-		this.resource=resource;
-	}
+		this.computationId = computationId;
+		this.id = computationId.getId();
+		this.name = name;
+		this.description = description;
+		this.categoryId = categoryId;
+		this.operatorId = operatorId;
+		this.infrastructure = infrastructure;
+		this.creationDate = creationDate;
+		this.endDate = endDate;
+		this.status = status;
+		this.resource = resource;
+	}*/
 
 	public OperatorCategory getOperatorCategory() {
-		OperatorsClassification classification = DataMinerManager.getDefaultOperatorsClassification();
-		if (classification==null)
+		OperatorsClassification classification = DataMinerManager
+				.getDefaultOperatorsClassification();
+		if (classification == null)
 			return null;
 		else
 			return classification.getCategoryById(categoryId);
 	}
-	
+
 	public Operator getOperator() {
-		if (operator==null) {
-			OperatorsClassification classification = DataMinerManager.getDefaultOperatorsClassification();
-			if (classification!=null)
-				operator=classification.getOperatorById(operatorId);
+		if (operator == null) {
+			OperatorsClassification classification = DataMinerManager
+					.getDefaultOperatorsClassification();
+			if (classification != null)
+				operator = classification.getOperatorById(operatorId);
 		}
 		return operator;
 	}
-	
 
 	public ComputationId getComputationId() {
 		return computationId;
@@ -124,7 +128,7 @@ public class ComputationItem implements Serializable{
 	}
 
 	public void setEndDate(Date endDate) {
-		this.endDate=endDate;
+		this.endDate = endDate;
 	}
-		
+
 }

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/CancelComputationRequestEvent.java

@@ -0,0 +1,68 @@
+package org.gcube.portlets.user.dataminermanager.client.events;
+
+import org.gcube.portlets.user.dataminermanager.shared.data.ComputationId;
+
+import com.google.gwt.event.shared.EventHandler;
+import com.google.gwt.event.shared.GwtEvent;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.event.shared.HasHandlers;
+
+/**
+ * Cancel Computation Request Event
+ * 
+ * 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class CancelComputationRequestEvent
+		extends
+		GwtEvent<CancelComputationRequestEvent.CancelComputationRequestEventHandler> {
+
+	public static Type<CancelComputationRequestEventHandler> TYPE = new Type<CancelComputationRequestEventHandler>();
+	private ComputationId computationId;
+
+	public interface CancelComputationRequestEventHandler extends EventHandler {
+		void onCancel(CancelComputationRequestEvent event);
+	}
+
+	public interface HasCancelComputationRequestEventHandler extends
+			HasHandlers {
+		public HandlerRegistration addCancelComputationRequestEventHandler(
+				CancelComputationRequestEventHandler handler);
+	}
+
+	public CancelComputationRequestEvent(ComputationId computationId) {
+		this.computationId = computationId;
+	}
+
+	@Override
+	protected void dispatch(CancelComputationRequestEventHandler handler) {
+		handler.onCancel(this);
+	}
+
+	@Override
+	public Type<CancelComputationRequestEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	public static Type<CancelComputationRequestEventHandler> getType() {
+		return TYPE;
+	}
+
+	public static void fire(HasHandlers source,
+			CancelComputationRequestEvent event) {
+		source.fireEvent(event);
+	}
+
+	public ComputationId getComputationId() {
+		return computationId;
+	}
+
+	@Override
+	public String toString() {
+		return "CancelComputationRequestEvent [computationId=" + computationId
+				+ "]";
+	}
+
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/ComputationReadyEvent.java

@@ -0,0 +1,84 @@
+package org.gcube.portlets.user.dataminermanager.client.events;
+
+import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
+
+import com.google.gwt.event.shared.EventHandler;
+import com.google.gwt.event.shared.GwtEvent;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.event.shared.HasHandlers;
+
+/**
+ * Computation Ready Event
+ * 
+ * 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class ComputationReadyEvent extends
+		GwtEvent<ComputationReadyEvent.ComputationReadyEventHandler> {
+
+	public static Type<ComputationReadyEventHandler> TYPE = new Type<ComputationReadyEventHandler>();
+	private Operator operator;
+	private String computationTitle;
+	private String computationDescription;
+
+	public interface ComputationReadyEventHandler extends EventHandler {
+		void onReady(ComputationReadyEvent event);
+	}
+
+	public interface HasComputationReadyEventHandler extends HasHandlers {
+		public HandlerRegistration addComputationReadyEventHandler(
+				ComputationReadyEventHandler handler);
+	}
+
+	public ComputationReadyEvent(Operator operator, String computationTitle,
+			String computationDescription) {
+		super();
+		this.operator = operator;
+		this.computationTitle = computationTitle;
+		this.computationDescription = computationDescription;
+	}
+
+	@Override
+	protected void dispatch(ComputationReadyEventHandler handler) {
+		handler.onReady(this);
+	}
+
+	@Override
+	public Type<ComputationReadyEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	public static Type<ComputationReadyEventHandler> getType() {
+		return TYPE;
+	}
+
+	public static void fire(HasHandlers source, ComputationReadyEvent event) {
+		source.fireEvent(event);
+	}
+
+	public static Type<ComputationReadyEventHandler> getTYPE() {
+		return TYPE;
+	}
+
+	public Operator getOperator() {
+		return operator;
+	}
+
+	public String getComputationTitle() {
+		return computationTitle;
+	}
+
+	public String getComputationDescription() {
+		return computationDescription;
+	}
+
+	@Override
+	public String toString() {
+		return "ComputationReadyEvent [operator=" + operator
+				+ ", computationTitle=" + computationTitle
+				+ ", computationDescription=" + computationDescription + "]";
+	}
+
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/ImportCreatedEvent.java

@@ -1,43 +0,0 @@
-package org.gcube.portlets.user.dataminermanager.client.events;
-
-import com.google.gwt.event.shared.GwtEvent;
-import com.google.gwt.event.shared.EventHandler;
-import java.lang.String;
-import com.google.gwt.event.shared.HasHandlers;
-
-public class ImportCreatedEvent extends
-		GwtEvent<ImportCreatedEvent.ImportCreatedHandler> {
-
-	public static Type<ImportCreatedHandler> TYPE = new Type<ImportCreatedHandler>();
-	private String importId;
-
-	public interface ImportCreatedHandler extends EventHandler {
-		void onImportCreated(ImportCreatedEvent event);
-	}
-
-	public ImportCreatedEvent(String importId) {
-		this.importId = importId;
-	}
-
-	public String getImportId() {
-		return importId;
-	}
-
-	@Override
-	protected void dispatch(ImportCreatedHandler handler) {
-		handler.onImportCreated(this);
-	}
-
-	@Override
-	public Type<ImportCreatedHandler> getAssociatedType() {
-		return TYPE;
-	}
-
-	public static Type<ImportCreatedHandler> getType() {
-		return TYPE;
-	}
-
-	public static void fire(HasHandlers source, String importId) {
-		source.fireEvent(new ImportCreatedEvent(importId));
-	}
-}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/ImportTerminatedEvent.java

@@ -1,44 +0,0 @@
-package org.gcube.portlets.user.dataminermanager.client.events;
-
-import org.gcube.portlets.user.dataminermanager.client.bean.ImportStatus;
-
-import com.google.gwt.event.shared.EventHandler;
-import com.google.gwt.event.shared.GwtEvent;
-import com.google.gwt.event.shared.HasHandlers;
-
-public class ImportTerminatedEvent extends
-		GwtEvent<ImportTerminatedEvent.ImportTerminatedHandler> {
-
-	public static Type<ImportTerminatedHandler> TYPE = new Type<ImportTerminatedHandler>();
-	private ImportStatus importStatus;
-
-	public interface ImportTerminatedHandler extends EventHandler {
-		void onImportTerminated(ImportTerminatedEvent event);
-	}
-
-	public ImportTerminatedEvent(ImportStatus importStatus) {
-		this.importStatus = importStatus;
-	}
-
-	public ImportStatus getImportStatus() {
-		return importStatus;
-	}
-
-	@Override
-	protected void dispatch(ImportTerminatedHandler handler) {
-		handler.onImportTerminated(this);
-	}
-
-	@Override
-	public Type<ImportTerminatedHandler> getAssociatedType() {
-		return TYPE;
-	}
-
-	public static Type<ImportTerminatedHandler> getType() {
-		return TYPE;
-	}
-
-	public static void fire(HasHandlers source, ImportStatus importStatus) {
-		source.fireEvent(new ImportTerminatedEvent(importStatus));
-	}
-}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/JobsGridGotDirtyEvent.java

@@ -1,35 +0,0 @@
-package org.gcube.portlets.user.dataminermanager.client.events;
-
-import com.google.gwt.event.shared.GwtEvent;
-import com.google.gwt.event.shared.EventHandler;
-import com.google.gwt.event.shared.HasHandlers;
-
-public class JobsGridGotDirtyEvent extends GwtEvent<JobsGridGotDirtyEvent.JobsGridGotDirtyHandler> {
-
-	public static Type<JobsGridGotDirtyHandler> TYPE = new Type<JobsGridGotDirtyHandler>();
-
-	public interface JobsGridGotDirtyHandler extends EventHandler {
-		void onJobsGridGotDirty(JobsGridGotDirtyEvent event);
-	}
-
-	public JobsGridGotDirtyEvent() {
-	}
-
-	@Override
-	protected void dispatch(JobsGridGotDirtyHandler handler) {
-		handler.onJobsGridGotDirty(this);
-	}
-
-	@Override
-	public Type<JobsGridGotDirtyHandler> getAssociatedType() {
-		return TYPE;
-	}
-
-	public static Type<JobsGridGotDirtyHandler> getType() {
-		return TYPE;
-	}
-
-	public static void fire(HasHandlers source) {
-		source.fireEvent(new JobsGridGotDirtyEvent());
-	}
-}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/JobsGridHandler.java

@@ -1,18 +0,0 @@
-/**
- * 
- */
-package org.gcube.portlets.user.dataminermanager.client.events;
-
-import org.gcube.portlets.user.dataminermanager.client.bean.ComputationItem;
-
-/**
- * @author ceras
- *
- */
-public interface JobsGridHandler {
-	
-	public void jobSelected(ComputationItem jobItem);
-
-	public void removeComputation(ComputationItem jobItem);
-	
-}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/ResubmitComputationEvent.java

@@ -1,45 +0,0 @@
-package org.gcube.portlets.user.dataminermanager.client.events;
-
-import com.google.gwt.event.shared.GwtEvent;
-import com.google.gwt.event.shared.EventHandler;
-
-import org.gcube.portlets.user.dataminermanager.client.bean.ComputationItem;
-
-import com.google.gwt.event.shared.HasHandlers;
-
-public class ResubmitComputationEvent extends
-		GwtEvent<ResubmitComputationEvent.ResubmitComputationHandler> {
-
-	public static Type<ResubmitComputationHandler> TYPE = new Type<ResubmitComputationHandler>();
-	private ComputationItem jobItem;
-
-	public interface ResubmitComputationHandler extends EventHandler {
-		void onResubmitComputation(ResubmitComputationEvent event);
-	}
-
-	public ResubmitComputationEvent(ComputationItem jobItem) {
-		this.jobItem = jobItem;
-	}
-
-	public ComputationItem getJobItem() {
-		return jobItem;
-	}
-
-	@Override
-	protected void dispatch(ResubmitComputationHandler handler) {
-		handler.onResubmitComputation(this);
-	}
-
-	@Override
-	public Type<ResubmitComputationHandler> getAssociatedType() {
-		return TYPE;
-	}
-
-	public static Type<ResubmitComputationHandler> getType() {
-		return TYPE;
-	}
-
-	public static void fire(HasHandlers source, ComputationItem jobItem) {
-		source.fireEvent(new ResubmitComputationEvent(jobItem));
-	}
-}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/ResubmitComputationExecutionEvent.java

@@ -0,0 +1,69 @@
+package org.gcube.portlets.user.dataminermanager.client.events;
+
+import org.gcube.portlets.user.dataminermanager.client.bean.ComputationItem;
+
+import com.google.gwt.event.shared.EventHandler;
+import com.google.gwt.event.shared.GwtEvent;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.event.shared.HasHandlers;
+
+/**
+ * Resubmit Computation Execution Event
+ * 
+ * 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class ResubmitComputationExecutionEvent
+		extends
+		GwtEvent<ResubmitComputationExecutionEvent.ResubmitComputationExecutionEventHandler> {
+
+	public static Type<ResubmitComputationExecutionEventHandler> TYPE = new Type<ResubmitComputationExecutionEventHandler>();
+	private ComputationItem computationItem;
+
+	public interface ResubmitComputationExecutionEventHandler extends
+			EventHandler {
+		void onResubmit(ResubmitComputationExecutionEvent event);
+	}
+
+	public interface HasResubmitComputationExecutionEventHandler extends
+			HasHandlers {
+		public HandlerRegistration addResubmitComputationExecutionEventHandler(
+				ResubmitComputationExecutionEventHandler handler);
+	}
+
+	public ResubmitComputationExecutionEvent(ComputationItem computationItem) {
+		this.computationItem = computationItem;
+	}
+
+	@Override
+	protected void dispatch(ResubmitComputationExecutionEventHandler handler) {
+		handler.onResubmit(this);
+	}
+
+	@Override
+	public Type<ResubmitComputationExecutionEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	public static Type<ResubmitComputationExecutionEventHandler> getType() {
+		return TYPE;
+	}
+
+	public static void fire(HasHandlers source,
+			ResubmitComputationExecutionEvent event) {
+		source.fireEvent(event);
+	}
+
+	public ComputationItem getComputationItem() {
+		return computationItem;
+	}
+
+	@Override
+	public String toString() {
+		return "ResubmitComputationExecutionEvent [computationItem="
+				+ computationItem + "]";
+	}
+
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/ResubmitComputationExecutionRequestEvent.java

@@ -0,0 +1,70 @@
+package org.gcube.portlets.user.dataminermanager.client.events;
+
+import org.gcube.portlets.user.dataminermanager.shared.data.ComputationId;
+
+import com.google.gwt.event.shared.EventHandler;
+import com.google.gwt.event.shared.GwtEvent;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.event.shared.HasHandlers;
+
+/**
+ * Resubmit Computation Execution Request Event
+ * 
+ * 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class ResubmitComputationExecutionRequestEvent
+		extends
+		GwtEvent<ResubmitComputationExecutionRequestEvent.ResubmitComputationExecutionRequestEventHandler> {
+
+	public static Type<ResubmitComputationExecutionRequestEventHandler> TYPE = new Type<ResubmitComputationExecutionRequestEventHandler>();
+	private ComputationId computationId;
+
+	public interface ResubmitComputationExecutionRequestEventHandler extends
+			EventHandler {
+		void onResubmit(ResubmitComputationExecutionRequestEvent event);
+	}
+
+	public interface HasResubmitComputationExecutionRequestEventHandler extends
+			HasHandlers {
+		public HandlerRegistration addResubmitComputationExecutionRequestEventHandler(
+				ResubmitComputationExecutionRequestEventHandler handler);
+	}
+
+	public ResubmitComputationExecutionRequestEvent(ComputationId computationId) {
+		this.computationId = computationId;
+	}
+
+	@Override
+	protected void dispatch(ResubmitComputationExecutionRequestEventHandler handler) {
+		handler.onResubmit(this);
+	}
+
+	@Override
+	public Type<ResubmitComputationExecutionRequestEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	public static Type<ResubmitComputationExecutionRequestEventHandler> getType() {
+		return TYPE;
+	}
+
+	public static void fire(HasHandlers source,
+			ResubmitComputationExecutionRequestEvent event) {
+		source.fireEvent(event);
+	}
+
+	public ComputationId getComputationId() {
+		return computationId;
+	}
+
+	@Override
+	public String toString() {
+		return "ResubmitComputationExecutionRequestEvent [computationId="
+				+ computationId + "]";
+	}
+
+	
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/StartComputationEvent.java

@@ -1,83 +0,0 @@
-package org.gcube.portlets.user.dataminermanager.client.events;
-
-import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
-
-import com.google.gwt.event.shared.EventHandler;
-import com.google.gwt.event.shared.GwtEvent;
-import com.google.gwt.event.shared.HandlerRegistration;
-import com.google.gwt.event.shared.HasHandlers;
-
-/**
- * Start Computation Event
- * 
- * 
- * @author "Giancarlo Panichi" <a
- *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
- *
- */
-public class StartComputationEvent extends
-		GwtEvent<StartComputationEvent.StartComputationEventHandler> {
-
-	public static Type<StartComputationEventHandler> TYPE = new Type<StartComputationEventHandler>();
-	private Operator op;
-	private String computationTitle;
-	private String computationDescription;
-	
-	public interface StartComputationEventHandler extends EventHandler {
-		void onStart(StartComputationEvent event);
-	}
-
-	public interface HasStartComputationEventHandler extends HasHandlers {
-		public HandlerRegistration addStartComputationEventHandler(
-				StartComputationEventHandler handler);
-	}
-	
-	public StartComputationEvent(Operator op, String computationTitle, String computationDescription) {
-		this.op=op;
-		this.computationTitle=computationTitle;
-		this.computationDescription=computationDescription;
-		
-	}
-
-	@Override
-	protected void dispatch(StartComputationEventHandler handler) {
-		handler.onStart(this);
-	}
-
-	@Override
-	public Type<StartComputationEventHandler> getAssociatedType() {
-		return TYPE;
-	}
-
-	public static Type<StartComputationEventHandler> getType() {
-		return TYPE;
-	}
-
-	public static void fire(HasHandlers source,
-			StartComputationEvent startComputationEvent) {
-		source.fireEvent(startComputationEvent);
-	}
-
-	public Operator getOp() {
-		return op;
-	}
-
-	public String getComputationTitle() {
-		return computationTitle;
-	}
-
-	public String getComputationDescription() {
-		return computationDescription;
-	}
-
-	@Override
-	public String toString() {
-		return "StartComputationEvent [op=" + op + ", computationTitle="
-				+ computationTitle + ", computationDescription="
-				+ computationDescription + "]";
-	}
-
-	
-	
-	
-}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/StartComputationExecutionEvent.java

@@ -0,0 +1,76 @@
+package org.gcube.portlets.user.dataminermanager.client.events;
+
+import org.gcube.portlets.user.dataminermanager.shared.data.ComputationId;
+
+import com.google.gwt.event.shared.EventHandler;
+import com.google.gwt.event.shared.GwtEvent;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.event.shared.HasHandlers;
+
+/**
+ * Start Computation Execution Event
+ * 
+ * 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class StartComputationExecutionEvent
+		extends
+		GwtEvent<StartComputationExecutionEvent.StartComputationExecutionEventHandler> {
+
+	public static Type<StartComputationExecutionEventHandler> TYPE = new Type<StartComputationExecutionEventHandler>();
+	private ComputationId computationId;
+	private int computationStatusPanelIndex;
+
+	public interface StartComputationExecutionEventHandler extends EventHandler {
+		void onStart(StartComputationExecutionEvent event);
+	}
+
+	public interface HasStartComputationExecutionEventHandler extends
+			HasHandlers {
+		public HandlerRegistration addStartComputationExecutionEventHandler(
+				StartComputationExecutionEventHandler handler);
+	}
+
+	public StartComputationExecutionEvent(ComputationId computationId,
+			int computationStatusPanelIndex) {
+		this.computationId = computationId;
+		this.computationStatusPanelIndex = computationStatusPanelIndex;
+	}
+
+	@Override
+	protected void dispatch(StartComputationExecutionEventHandler handler) {
+		handler.onStart(this);
+	}
+
+	@Override
+	public Type<StartComputationExecutionEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	public static Type<StartComputationExecutionEventHandler> getType() {
+		return TYPE;
+	}
+
+	public static void fire(HasHandlers source,
+			StartComputationExecutionEvent event) {
+		source.fireEvent(event);
+	}
+
+	public ComputationId getComputationId() {
+		return computationId;
+	}
+
+	public int getComputationStatusPanelIndex() {
+		return computationStatusPanelIndex;
+	}
+
+	@Override
+	public String toString() {
+		return "StartComputationExecutionEvent [computationId=" + computationId
+				+ ", computationStatusPanelIndex="
+				+ computationStatusPanelIndex + "]";
+	}
+
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/StartComputationExecutionRequestEvent.java

@@ -0,0 +1,92 @@
+package org.gcube.portlets.user.dataminermanager.client.events;
+
+import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
+
+import com.google.gwt.event.shared.EventHandler;
+import com.google.gwt.event.shared.GwtEvent;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.event.shared.HasHandlers;
+
+/**
+ * Start Computation Execution Request Event
+ * 
+ * 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class StartComputationExecutionRequestEvent
+		extends
+		GwtEvent<StartComputationExecutionRequestEvent.StartComputationExecutionRequestEventHandler> {
+
+	public static Type<StartComputationExecutionRequestEventHandler> TYPE = new Type<StartComputationExecutionRequestEventHandler>();
+	private Operator op;
+	private String computationTitle;
+	private String computationDescription;
+	private int computationStatusPanelIndex;
+
+	public interface StartComputationExecutionRequestEventHandler extends EventHandler {
+		void onStart(StartComputationExecutionRequestEvent event);
+	}
+
+	public interface HasStartComputationExecutionRequestEventHandler extends HasHandlers {
+		public HandlerRegistration addStartComputationExecutionRequestEventHandler(
+				StartComputationExecutionRequestEventHandler handler);
+	}
+
+	public StartComputationExecutionRequestEvent(Operator op, String computationTitle,
+			String computationDescription, int computationStatusPanelIndex) {
+		this.op = op;
+		this.computationTitle = computationTitle;
+		this.computationDescription = computationDescription;
+		this.computationStatusPanelIndex = computationStatusPanelIndex;
+
+	}
+
+	@Override
+	protected void dispatch(StartComputationExecutionRequestEventHandler handler) {
+		handler.onStart(this);
+	}
+
+	@Override
+	public Type<StartComputationExecutionRequestEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	public static Type<StartComputationExecutionRequestEventHandler> getType() {
+		return TYPE;
+	}
+
+	public static void fire(HasHandlers source,
+			StartComputationExecutionRequestEvent event) {
+		source.fireEvent(event);
+	}
+
+	public Operator getOp() {
+		return op;
+	}
+
+	public String getComputationTitle() {
+		return computationTitle;
+	}
+
+	public String getComputationDescription() {
+		return computationDescription;
+	}
+
+	public int getComputationStatusPanelIndex() {
+		return computationStatusPanelIndex;
+	}
+
+	@Override
+	public String toString() {
+		return "StartComputationExecutionRequestEvent [op=" + op
+				+ ", computationTitle=" + computationTitle
+				+ ", computationDescription=" + computationDescription
+				+ ", computationStatusPanelIndex="
+				+ computationStatusPanelIndex + "]";
+	}
+
+	
+
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/ComputationExecutionPanel.java

@@ -4,16 +4,13 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
-import org.gcube.portlets.user.dataminermanager.client.bean.ComputationItem;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
 import org.gcube.portlets.user.dataminermanager.client.common.EventBusProvider;
-import org.gcube.portlets.user.dataminermanager.client.events.JobsGridGotDirtyEvent;
-import org.gcube.portlets.user.dataminermanager.client.events.ResubmitComputationEvent;
-import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
-import org.gcube.portlets.user.dataminermanager.shared.data.ComputationId;
+import org.gcube.portlets.user.dataminermanager.client.events.ResubmitComputationExecutionEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.StartComputationExecutionEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.StartComputationExecutionRequestEvent;
 
 import com.allen_sauer.gwt.log.client.Log;
-import com.google.gwt.user.client.rpc.AsyncCallback;
 import com.sencha.gxt.core.client.dom.ScrollSupport.ScrollMode;
 import com.sencha.gxt.core.client.util.Margins;
 import com.sencha.gxt.widget.core.client.FramedPanel;
@@ -50,13 +47,13 @@ public class ComputationExecutionPanel extends FramedPanel {
 	 */
 	public ComputationExecutionPanel() {
 		super();
+		Log.debug("Computation Execution Panel");
 		init();
 		create();
 		bind();
 	}
 
 	private void init() {
-		// this.setHeading(".: Computation Execution");
 		setHeaderVisible(false);
 		addStyleName("computationExcecutionPanel");
 		setBodyStyle("backgroundColor:white;");
@@ -74,99 +71,86 @@ public class ComputationExecutionPanel extends FramedPanel {
 		add(topV);
 	}
 
+	private void bind() {
+		EventBusProvider.INSTANCE.addHandler(
+				ResubmitComputationExecutionEvent.getType(),
+				new ResubmitComputationExecutionEvent.ResubmitComputationExecutionEventHandler() {
+					@Override
+					public void onResubmit(ResubmitComputationExecutionEvent event) {
+						resubmitComputation(event);
+					}
+				});
+
+		EventBusProvider.INSTANCE.addHandler(StartComputationExecutionEvent.getType(),
+				new StartComputationExecutionEvent.StartComputationExecutionEventHandler() {
+
+					@Override
+					public void onStart(StartComputationExecutionEvent event) {
+						startComputation(event);
+
+					}
+
+				});
+	}
+
 	public void startNewComputation(final Operator operator,
 			String computationTitle, String computationDescription) {
 		Log.debug("Computation Panel: start new computation ");
-		final ComputationStatusPanel statusPanel = new ComputationStatusPanel(
+		ComputationStatusPanel statusPanel = new ComputationStatusPanel(
 				operator);
 		computationStatusPanels.add(statusPanel);
+		int index = computationStatusPanels.indexOf(statusPanel);
+		statusPanel.setItemId("ComputationStatusPanel" + String.valueOf(index));
+
 		Log.debug("Added status bar");
 		v.insert(statusPanel, 0, new VerticalLayoutData(1, -1, new Margins(20)));
 		removeAllButton.setEnabled(true);
-
-		DataMinerManager.getService().startComputation(operator,
-				computationTitle, computationDescription,
-				new AsyncCallback<ComputationId>() {
-					@Override
-					public void onSuccess(ComputationId computationId) {
-						if (computationId == null)
-							UtilsGXT3
-									.alert("ERROR",
-											"Failed to start computation "
-													+ operator.getName()
-													+ ", the computation id is null (1)");
-						else {
-							statusPanel.computationStarted(computationId);
-							EventBusProvider.INSTANCE
-									.fireEvent(new JobsGridGotDirtyEvent());
-						}
-					}
-
-					@Override
-					public void onFailure(Throwable caught) {
-						UtilsGXT3.alert(
-								"ERROR",
-								"Failed to start computation "
-										+ operator.getName()
-										+ " (2)<br/>Cause:" + caught.getCause()
-										+ "<br/>Message:" + caught.getMessage());
-					}
-				});
-
 		forceLayout();
 
+		StartComputationExecutionRequestEvent event = new StartComputationExecutionRequestEvent(
+				operator, computationTitle, computationDescription, index);
+		EventBusProvider.INSTANCE.fireEvent(event);
+
 	}
 
-	private void bind() {
-		EventBusProvider.INSTANCE.addHandler(
-				ResubmitComputationEvent.getType(),
-				new ResubmitComputationEvent.ResubmitComputationHandler() {
-					@Override
-					public void onResubmitComputation(
-							ResubmitComputationEvent event) {
-						resubmitComputation(event.getJobItem());
-					}
-				});
+	private void startComputation(StartComputationExecutionEvent event) {
+		try {
+			ComputationStatusPanel statusPanel = null;
+			try {
+				statusPanel = computationStatusPanels.get(event
+						.getComputationStatusPanelIndex());
+			} catch (IndexOutOfBoundsException e) {
+				Log.debug("No ComputationStatusPanel retrieved!");
+				Log.debug(e.getLocalizedMessage());
+			}
+
+			if (statusPanel == null) {
+
+			} else {
+				statusPanel.computationStarted(event.getComputationId());
+				forceLayout();
+			}
+
+		} catch (Throwable e) {
+			Log.error(e.getLocalizedMessage());
+			e.printStackTrace();
+		}
 	}
 
-	public void resubmitComputation(final ComputationItem computationItem) {
+	public void resubmitComputation(ResubmitComputationExecutionEvent event) {
 		final ComputationStatusPanel statusPanel = new ComputationStatusPanel(
-				computationItem.getOperator());
+				event.getComputationItem().getOperator());
 		computationStatusPanels.add(statusPanel);
-		if(v.getWidgetCount()==0){
+		if (v.getWidgetCount() == 0) {
 			v.add(statusPanel, new VerticalLayoutData(1, -1, new Margins(20)));
 		} else {
-			v.insert(statusPanel, 0, new VerticalLayoutData(1, -1, new Margins(20)));
+			v.insert(statusPanel, 0, new VerticalLayoutData(1, -1, new Margins(
+					20)));
 		}
 		removeAllButton.setEnabled(true);
 
-		DataMinerManager.getService().resubmit(
-				computationItem.getComputationId(),
-				new AsyncCallback<ComputationId>() {
-					@Override
-					public void onSuccess(ComputationId computationId) {
-						if (computationId == null)
-							UtilsGXT3
-									.alert("ERROR",
-											"Failed to resubmit computation "
-													+ computationItem.getName()
-													+ ", the computation id is null (1)");
-						else {
-							statusPanel.computationStarted(computationId);
-							EventBusProvider.INSTANCE
-									.fireEvent(new JobsGridGotDirtyEvent());
-						}
-					}
-
-					@Override
-					public void onFailure(Throwable caught) {
-						UtilsGXT3.alert("ERROR",
-								"Failed to start computation "
-										+ computationItem.getName()
-										+ " (2)<br/>Cause:" + caught.getCause()
-										+ "<br/>Message:" + caught.getMessage());
-					}
-				});
+		statusPanel.computationStarted(event.getComputationItem()
+				.getComputationId());
 
 		forceLayout();
 

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/ComputationOutputPanel.java

@@ -14,6 +14,7 @@ import org.gcube.portlets.user.dataminermanager.client.bean.output.ObjectResourc
 import org.gcube.portlets.user.dataminermanager.client.bean.output.Resource;
 import org.gcube.portlets.user.dataminermanager.client.bean.output.Resource.ResourceType;
 import org.gcube.portlets.user.dataminermanager.client.bean.output.TableResource;
+import org.gcube.portlets.user.dataminermanager.client.rpc.DataMinerPortletServiceAsync;
 import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
 import org.gcube.portlets.user.dataminermanager.client.widgets.ImagesViewer;
 import org.gcube.portlets.user.dataminermanager.client.widgets.ResourceViewer;
@@ -56,7 +57,7 @@ public class ComputationOutputPanel extends SimpleContainer {
 		add(v);
 
 		// request for a jobItem linked with the computationId (or jobId)
-		DataMinerManager.getService().getResourceByComputationId(computationId,
+		DataMinerPortletServiceAsync.INSTANCE.getResourceByComputationId(computationId,
 				new AsyncCallback<Resource>() {
 					@Override
 					public void onSuccess(Resource result) {

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/ComputationPanel.java

@@ -2,9 +2,9 @@ package org.gcube.portlets.user.dataminermanager.client.experimentArea;
 
 import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
-import org.gcube.portlets.user.dataminermanager.client.events.StartComputationEvent;
-import org.gcube.portlets.user.dataminermanager.client.events.StartComputationEvent.HasStartComputationEventHandler;
-import org.gcube.portlets.user.dataminermanager.client.events.StartComputationEvent.StartComputationEventHandler;
+import org.gcube.portlets.user.dataminermanager.client.events.ComputationReadyEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.ComputationReadyEvent.ComputationReadyEventHandler;
+import org.gcube.portlets.user.dataminermanager.client.events.ComputationReadyEvent.HasComputationReadyEventHandler;
 import org.gcube.portlets.user.dataminermanager.client.experimentArea.ComputationParametersPanel.ComputationParametersPanelHandler;
 
 import com.google.gwt.event.shared.HandlerRegistration;
@@ -32,8 +32,8 @@ import com.sencha.gxt.widget.core.client.toolbar.ToolBar;
  *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
  *
  */
-public class ComputationPanel extends FramedPanel implements
-		HasStartComputationEventHandler {
+public class ComputationPanel extends FramedPanel implements HasComputationReadyEventHandler
+		 {
 	private static final String DELETE_ALL_BUTTON_TOOLTIP = "Remove All Operators";
 	private TextButton removeAllButton;
 	private ToolBar toolBar;
@@ -55,6 +55,7 @@ public class ComputationPanel extends FramedPanel implements
 	private void create() {
 		computationParametersPanel=null;
 		topV = new VerticalLayoutContainer();
+		topV.setScrollMode(ScrollMode.NONE);
 		setToolBar();
 		topV.add(toolBar, new VerticalLayoutData(1, -1, new Margins(0)));
 		SimpleContainer operator = new SimpleContainer();
@@ -107,21 +108,20 @@ public class ComputationPanel extends FramedPanel implements
 				new BoxLayoutData(new Margins(0)));
 		v.add(hBox, new VerticalLayoutData(1, -1, new Margins(10,0,0,0)));
 		v.add(computationParametersPanel, new VerticalLayoutData(1, -1,
-				new Margins(0,5,5,5)));
+				new Margins(0)));
 		removeAllButton.setEnabled(true);
-		
 		forceLayout();
 	}
 
 	@Override
-	public HandlerRegistration addStartComputationEventHandler(
-			StartComputationEventHandler handler) {
-		return addHandler(handler, StartComputationEvent.getType());
+	public HandlerRegistration addComputationReadyEventHandler(
+			ComputationReadyEventHandler handler) {
+		return addHandler(handler, ComputationReadyEvent.getType());
 
 	}
 
-	public void addOperator(Operator op) {
-		computationParametersPanel = new ComputationParametersPanel(op);
+	public void addOperator(Operator operator) {
+		computationParametersPanel = new ComputationParametersPanel(operator);
 		computationParametersPanel.setHandler(new ComputationParametersPanelHandler() {
 			@Override
 			public void startComputation(String computationTitle,
@@ -130,8 +130,8 @@ public class ComputationPanel extends FramedPanel implements
 					forceLayout();
 					computationParametersPanel.updateOperatorParametersValues();
 					Operator op = computationParametersPanel.getOperator();
-					StartComputationEvent startComputationEvent = new StartComputationEvent(op, computationTitle, computationDescription);
-					fireEvent(startComputationEvent);
+					ComputationReadyEvent event = new ComputationReadyEvent(op, computationTitle, computationDescription);
+					fireEvent(event);
 				}
 				
 			}

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/ComputationParametersPanel.java

@@ -18,6 +18,7 @@ import org.gcube.portlets.user.dataminermanager.client.parametersfield.ColumnFld
 import org.gcube.portlets.user.dataminermanager.client.parametersfield.ColumnListFld;
 import org.gcube.portlets.user.dataminermanager.client.parametersfield.OperatorFieldWidget;
 import org.gcube.portlets.user.dataminermanager.client.parametersfield.TabularFld;
+import org.gcube.portlets.user.dataminermanager.client.rpc.DataMinerPortletServiceAsync;
 import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -98,22 +99,21 @@ public class ComputationParametersPanel extends SimpleContainer {
 		Image img = new Image(GWT.getModuleBaseURL() + "../images/operators/"
 				+ (operator.hasImage() ? operator.getId() : "DEFAULT_IMAGE")
 				+ ".png");
-		img.setStylePrimaryName("workflow-icon");
-		v.add(img, new VerticalLayoutData(-1, -1, new Margins(-10, 0, 0, 5)));
+		img.setStylePrimaryName("workflow-icon");//-15
+		v.add(img, new VerticalLayoutData(-1, -1, new Margins(-15, 0, 0, 5)));
 
 		HtmlLayoutContainer title = new HtmlLayoutContainer("<span>"
 				+ operator.getName() + "</span>");
 		title.addStyleName("workflow-title");
-		v.add(title, new VerticalLayoutData(-1, -1, new Margins(15, 0, 0, -25)));
+		v.add(title, new VerticalLayoutData(-1, -1, new Margins(20, 0, 0, -25)));
 
 		String descr = operator.getDescription();
 		descr = (descr == null || descr.contentEquals("")) ? "no-description"
-				: operator.getDescription();
-		HtmlLayoutContainer description = new HtmlLayoutContainer("<span style='padding-right:10px;'>"
+				: operator.getDescription();//display:block;clear:both;'
+		HtmlLayoutContainer description = new HtmlLayoutContainer("<span style='padding-left:10px;padding-right:10px'>"
 				+ descr + "</span>");
 		description.addStyleName("workflow-description");
-		v.add(description, new VerticalLayoutData(-1, -1, new Margins(0, 5, 0,
-				10)));
+		v.add(description, new VerticalLayoutData(-1, -1, new Margins(0)));
 
 		addTitleField();
 		
@@ -194,15 +194,16 @@ public class ComputationParametersPanel extends SimpleContainer {
 		titleField.setWidth(250);
 		titleField.setValue(defaultComputationTitle);
 		FieldLabel titleLabel = new FieldLabel(titleField, "Computation Title");
+		titleLabel.addStyleName("workflow-computation-title");
 		v.add(titleLabel, new VerticalLayoutData(-1, -1,
-				new Margins(5, 0, 0, 5)));
+				new Margins(0)));
 	}
 
 	/**
 	 * @param parametersPanel
 	 */
 	private void loadOperatorParameters() {
-		DataMinerManager.getService().getParameters(operator,
+		DataMinerPortletServiceAsync.INSTANCE.getParameters(operator,
 				new AsyncCallback<List<Parameter>>() {
 					@Override
 					public void onSuccess(List<Parameter> result) {

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/ComputationStatusPanel.java

@@ -5,16 +5,15 @@ package org.gcube.portlets.user.dataminermanager.client.experimentArea;
 
 import java.util.Date;
 
-import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
 import org.gcube.portlets.user.dataminermanager.client.bean.ComputationStatus;
 import org.gcube.portlets.user.dataminermanager.client.bean.ComputationStatus.Status;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
 import org.gcube.portlets.user.dataminermanager.client.common.EventBusProvider;
-import org.gcube.portlets.user.dataminermanager.client.events.SessionExpiredEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.CancelComputationRequestEvent;
+import org.gcube.portlets.user.dataminermanager.client.rpc.DataMinerPortletServiceAsync;
 import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
 import org.gcube.portlets.user.dataminermanager.shared.Constants;
 import org.gcube.portlets.user.dataminermanager.shared.data.ComputationId;
-import org.gcube.portlets.user.dataminermanager.shared.exception.ExpiredSessionServiceException;
 
 import com.allen_sauer.gwt.log.client.Log;
 import com.google.gwt.dom.client.Style.Unit;
@@ -137,29 +136,11 @@ public class ComputationStatusPanel extends SimpleContainer {
 	
 	
 	private void cancelComputation(){
-		DataMinerManager.getService().cancelComputation(computationId, new AsyncCallback<String>() {
-
-			@Override
-			public void onFailure(Throwable caught) {
-				if (caught instanceof ExpiredSessionServiceException) {
-					UtilsGXT3.alert("Error", "Expired Session");
-					EventBusProvider.INSTANCE.fireEvent(new SessionExpiredEvent());
-				} else {
-					UtilsGXT3.alert(
-							"Error",
-							"Error in cancel computation: ComputationId="+computationId.getId()+", Error="
-									+ caught.getLocalizedMessage());
-				}
-				
-			}
-
-			@Override
-			public void onSuccess(String result) {
-				Log.debug(result);
-				
-			}
-		});
+		CancelComputationRequestEvent event=new CancelComputationRequestEvent(computationId);
+		EventBusProvider.INSTANCE.fireEvent(event);
 	}
+		
+		
 
 	/**
 	 * @param computationId 
@@ -234,7 +215,7 @@ public class ComputationStatusPanel extends SimpleContainer {
 		@Override
 		public void run() {
 		    Log.debug("Timer run .....");
-			DataMinerManager.getService().getComputationStatus(computationId, new AsyncCallback<ComputationStatus>() {
+			DataMinerPortletServiceAsync.INSTANCE.getComputationStatus(computationId, new AsyncCallback<ComputationStatus>() {
 
 				@Override
 				public void onFailure(Throwable caught) {

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/OperatorsPanel.java

@@ -12,6 +12,7 @@ import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
 import org.gcube.portlets.user.dataminermanager.client.bean.OperatorCategory;
 import org.gcube.portlets.user.dataminermanager.client.bean.OperatorsClassification;
+import org.gcube.portlets.user.dataminermanager.client.rpc.DataMinerPortletServiceAsync;
 import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
 import org.gcube.portlets.user.dataminermanager.shared.Constants;
 
@@ -95,7 +96,7 @@ public class OperatorsPanel extends FramedPanel {
 		// if the operators classification is not loaded, let's load by an rpc
 		if (DataMinerManager.getOperatorsClassifications() == null) {
 			waitMessage(true);
-			DataMinerManager.getService().getOperatorsClassifications(
+			DataMinerPortletServiceAsync.INSTANCE.getOperatorsClassifications(
 					new AsyncCallback<List<OperatorsClassification>>() {
 
 						@Override

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/WorkflowPanel.java

@@ -6,8 +6,8 @@ package org.gcube.portlets.user.dataminermanager.client.experimentArea;
 import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
 import org.gcube.portlets.user.dataminermanager.client.common.EventBusProvider;
-import org.gcube.portlets.user.dataminermanager.client.events.ResubmitComputationEvent;
-import org.gcube.portlets.user.dataminermanager.client.events.StartComputationEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.ComputationReadyEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.ResubmitComputationExecutionEvent;
 
 import com.allen_sauer.gwt.log.client.Log;
 import com.sencha.gxt.widget.core.client.TabItemConfig;
@@ -50,12 +50,12 @@ public class WorkflowPanel extends TabPanel {
 				.folderExplore());
 		computationPanel = new ComputationPanel();
 		computationPanel
-				.addStartComputationEventHandler(new StartComputationEvent.StartComputationEventHandler() {
+				.addComputationReadyEventHandler(new ComputationReadyEvent.ComputationReadyEventHandler() {
 
 					@Override
-					public void onStart(StartComputationEvent event) {
+					public void onReady(ComputationReadyEvent event) {
 						Log.debug("StartComputationEvent Received:"+event);
-						startComputation(event.getOp(), event.getComputationTitle(),
+						startComputation(event.getOperator(), event.getComputationTitle(),
 								event.getComputationDescription()); 
 
 					}
@@ -77,15 +77,22 @@ public class WorkflowPanel extends TabPanel {
 	 */
 	private void bind() {
 		EventBusProvider.INSTANCE.addHandler(
-				ResubmitComputationEvent.getType(),
-				new ResubmitComputationEvent.ResubmitComputationHandler() {
+				ResubmitComputationExecutionEvent.getType(),
+				new ResubmitComputationExecutionEvent.ResubmitComputationExecutionEventHandler() {
 					@Override
-					public void onResubmitComputation(
-							ResubmitComputationEvent event) {
-						setActiveWidget(computationExecutionPanel);
+					public void onResubmit(
+							ResubmitComputationExecutionEvent event) {
+						resubmitComputation();
 					}
 				});
 	}
+	
+	/**
+	 * 
+	 */
+	private void resubmitComputation(){
+		setActiveWidget(computationExecutionPanel);
+	}
 
 	/**
 	 * @param computationTitle

src/main/java/org/gcube/portlets/user/dataminermanager/client/rpc/DataMinerPortletServiceAsync.java

@@ -1,13 +1,9 @@
 package org.gcube.portlets.user.dataminermanager.client.rpc;
 
-import java.util.Date;
 import java.util.List;
 import java.util.Map;
 
 import org.gcube.portlets.user.dataminermanager.client.bean.ComputationStatus;
-import org.gcube.portlets.user.dataminermanager.client.bean.CsvMetadata;
-import org.gcube.portlets.user.dataminermanager.client.bean.FileMetadata;
-import org.gcube.portlets.user.dataminermanager.client.bean.ImportStatus;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
 import org.gcube.portlets.user.dataminermanager.client.bean.OperatorsClassification;
 import org.gcube.portlets.user.dataminermanager.client.bean.ResourceItem;

src/main/java/org/gcube/portlets/user/dataminermanager/server/DataMinerManagerServiceImpl.java

@@ -58,7 +58,6 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 	// private static final long CACHE_REFRESH_TIME = 30 * 60 * 1000; // 30
 	// minutes
 
-
 	// private final static String SEPARATOR = AlgorithmConfiguration
 	// .getListSeparator();
 	private static Logger logger = LoggerFactory
@@ -142,38 +141,40 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 	}
 
 	@Override
-	public ComputationId startComputation(Operator operator, String computationTitle,
-			String computationDescription) throws Exception {
+	public ComputationId startComputation(Operator operator,
+			String computationTitle, String computationDescription)
+			throws Exception {
 		try {
 			HttpSession session = this.getThreadLocalRequest().getSession();
 			ASLSession aslSession = SessionUtil.getASLSession(session);
-
+			logger.debug("StartComputation(): [computationTitle="
+					+ computationTitle + ", computationDescription="
+					+ computationDescription + ", operator=" + operator + "]");
 			SClient smClient = SessionUtil.getSClient(session, aslSession);
 			return smClient.startComputation(operator, computationTitle,
 					computationDescription);
 
 		} catch (Throwable e) {
-			logger.error("Error in computation: " + e.getLocalizedMessage());
+			logger.error("Error in start computation: "
+					+ e.getLocalizedMessage());
 			e.printStackTrace();
 			throw new Exception(e.getLocalizedMessage());
 		}
 	}
 
 	@Override
-	public ComputationId resubmit(ComputationId computationId) throws ServiceException {
+	public ComputationId resubmit(ComputationId computationId)
+			throws ServiceException {
 		try {
-			logger.info("RESUBMIT COMPUTATION: " + computationId);
 			HttpSession session = this.getThreadLocalRequest().getSession();
 			ASLSession aslSession = SessionUtil.getASLSession(session);
+			logger.debug("Resubmit(): " + computationId);
 
 			SClient smClient = SessionUtil.getSClient(session, aslSession);
-
-			// String computationId =
-			// factory.resubmitComputation(jobItem.getId());
-			// return computationId;
-			return computationId;
+			return smClient.resubmitComputation(computationId);
 		} catch (Throwable e) {
-			logger.error("Error in resubmit: " + e.getLocalizedMessage());
+			logger.error("Error in resubmit computation: "
+					+ e.getLocalizedMessage());
 			e.printStackTrace();
 			throw new ServiceException(e.getLocalizedMessage());
 		}
@@ -232,20 +233,19 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 		}
 	}
 
-	
-
 	@Override
 	public Resource getResourceByComputationId(ComputationId computationId) {
 		try {
-			Log.debug("getResourceByComputationId: "+computationId);
+			Log.debug("getResourceByComputationId: " + computationId);
 			HttpSession session = this.getThreadLocalRequest().getSession();
 			ASLSession aslSession = SessionUtil.getASLSession(session);
 
 			SClient smClient = SessionUtil.getSClient(session, aslSession);
-			Resource resource= smClient.getResourceByComputationId(computationId);
-			Log.debug("Resoure: "+resource);
+			Resource resource = smClient
+					.getResourceByComputationId(computationId);
+			Log.debug("Resoure: " + resource);
 			return resource;
-			
+
 		} catch (Exception e) {
 			logger.error("Error in getResourceByComputationId: "
 					+ e.getLocalizedMessage());
@@ -256,8 +256,8 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 	}
 
 	@Override
-	public Map<String, String> getParametersMapByComputationId(ComputationId jobId)
-			throws ServiceException {
+	public Map<String, String> getParametersMapByComputationId(
+			ComputationId jobId) throws ServiceException {
 
 		try {
 			HttpSession session = this.getThreadLocalRequest().getSession();
@@ -281,7 +281,7 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 		} catch (Throwable e) {
 			logger.error(e.getLocalizedMessage(), e);
 			e.printStackTrace();
-			throw new ServiceException(e.getLocalizedMessage(),e);
+			throw new ServiceException(e.getLocalizedMessage(), e);
 		}
 
 	}
@@ -301,13 +301,9 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 		}
 	}
 
-
-
-	
-
 	@Override
-	public String saveImage(ComputationId computationId, ImagesResource imagesResource)
-			throws Exception {
+	public String saveImage(ComputationId computationId,
+			ImagesResource imagesResource) throws Exception {
 
 		try {
 			HttpSession session = this.getThreadLocalRequest().getSession();
@@ -336,7 +332,8 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 								"This folder contains images obtained from Data Miner Manager");
 
 			} catch (ItemAlreadyExistException e) {
-				folder = (WorkspaceFolder) rootFolder.find(computationId.getId());
+				folder = (WorkspaceFolder) rootFolder.find(computationId
+						.getId());
 			}
 			InputStream inputStream = new URL(imagesResource.getLink())
 					.openStream();
@@ -437,9 +434,10 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 			HttpSession session = this.getThreadLocalRequest().getSession();
 			ASLSession aslSession = SessionUtil.getASLSession(session);
 			logger.debug("getDataMinerWorkArea()");
-			DataMinerWorkAreaManager dataMinerWorkAreaManager=new DataMinerWorkAreaManager(aslSession);
+			DataMinerWorkAreaManager dataMinerWorkAreaManager = new DataMinerWorkAreaManager(
+					aslSession);
 			return dataMinerWorkAreaManager.getDataMinerWorkArea();
-		
+
 		} catch (ServiceException e) {
 			throw e;
 		} catch (Throwable e) {
@@ -448,8 +446,7 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 			throw new ServiceException(e.getLocalizedMessage());
 		}
 	}
-	
-	
+
 	@Override
 	public String getPublicLink(ItemDescription itemDescription)
 			throws ServiceException {
@@ -478,8 +475,8 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 			ASLSession aslSession = SessionUtil.getASLSession(session);
 			logger.debug("CancelComputation(): " + computationId);
 			SClient smClient = SessionUtil.getSClient(session, aslSession);
-			String result=smClient.cancelComputation(computationId);
-			
+			String result = smClient.cancelComputation(computationId);
+
 			return result;
 		} catch (ServiceException e) {
 			throw e;
@@ -490,7 +487,4 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 		}
 	}
 
-	
-	
-
 }

src/main/java/org/gcube/portlets/user/dataminermanager/server/smservice/SClient.java

@@ -2,6 +2,7 @@ package org.gcube.portlets.user.dataminermanager.server.smservice;
 
 import java.util.List;
 
+import org.gcube.portlets.user.dataminermanager.client.bean.ComputationItem;
 import org.gcube.portlets.user.dataminermanager.client.bean.ComputationStatus;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
 import org.gcube.portlets.user.dataminermanager.client.bean.OperatorsClassification;
@@ -33,18 +34,20 @@ public abstract class SClient {
 			String computationTitle, String computationDescription)
 			throws Exception;
 
-	public abstract ComputationStatus getComputationStatus(ComputationId computationId)
-			throws Exception;
+	public abstract ComputationStatus getComputationStatus(
+			ComputationId computationId) throws Exception;
 
-	public abstract Resource getResourceByComputationId(ComputationId computationId)
-			throws Exception;
+	public abstract Resource getResourceByComputationId(
+			ComputationId computationId) throws Exception;
 
 	public abstract String cancelComputation(ComputationId computationId)
 			throws Exception;
 
+	public abstract ComputationId resubmitComputation(
+			ComputationId computationId) throws Exception;
+	
 	@Override
 	public String toString() {
 		return "SClient []";
 	}
-
 }

src/main/java/org/gcube/portlets/user/dataminermanager/server/smservice/SClient4WPS.java

@@ -26,6 +26,7 @@ import net.opengis.wps.x100.SupportedComplexDataInputType;
 import net.opengis.wps.x100.impl.ExecuteResponseDocumentImpl;
 
 import org.apache.xmlbeans.XmlString;
+import org.gcube.portlets.user.dataminermanager.client.bean.ComputationItem;
 import org.gcube.portlets.user.dataminermanager.client.bean.ComputationStatus;
 import org.gcube.portlets.user.dataminermanager.client.bean.ComputationStatus.Status;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
@@ -1117,4 +1118,11 @@ public class SClient4WPS extends SClient {
 
 	}
 
+	@Override
+	public ComputationId resubmitComputation(ComputationId computationId)
+			throws Exception {
+		//TODO
+		return null;
+	}
+
 }

src/main/webapp/DataMinerManager.css

@@ -256,6 +256,12 @@
 	color: #505050;
 }
 
+.workflow-computation-title {
+	padding-left: 5px;
+	padding-right: 5px;
+	padding-top: 8px;
+}
+
 .workflow-fieldDescription {
 	font-size: 12px;
 	color: #505050;