org.eclipse.egf.application/src/org/eclipse/egf/application/internal/activity/ActivityRunner.java

/**
 * Copyright (c) 2009-2010 Thales Corporate Services S.A.S.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 * Thales Corporate Services S.A.S - initial API and implementation
 */
package org.eclipse.egf.application.internal.activity;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.egf.application.internal.activator.EGFApplicationPlugin;
import org.eclipse.egf.application.internal.l10n.ApplicationMessages;
import org.eclipse.egf.common.helper.EMFHelper;
import org.eclipse.egf.core.l10n.EGFCoreMessages;
import org.eclipse.egf.core.producer.InvocationException;
import org.eclipse.egf.model.fcore.Activity;
import org.eclipse.egf.producer.EGFProducerPlugin;
import org.eclipse.egf.producer.l10n.ProducerMessages;
import org.eclipse.egf.producer.manager.IActivityManager;
import org.eclipse.emf.common.util.Diagnostic;
import org.eclipse.emf.common.util.DiagnosticException;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.osgi.util.NLS;

/**
 * @author Xavier Maysonnave
 * 
 */
public class ActivityRunner {

  protected Activity _activity;

  public ActivityRunner(Activity activity) throws CoreException {
    if (activity == null) {
      throw new CoreException(EGFApplicationPlugin.getDefault().newStatus(IStatus.ERROR, ApplicationMessages.ActivityRunner_NullActivity, null));
    }
    _activity = activity;
  }

  public void run(IProgressMonitor monitor) throws CoreException {
    IActivityManager<Activity> manager = null;
    try {
      // Retrieve an ActivityManager
      manager = EGFProducerPlugin.getActivityManagerProducer(_activity).createActivityManager(_activity);
      // Initialize Context
      manager.initializeContext();
    } catch (Throwable t) {
      throw new CoreException(EGFApplicationPlugin.getDefault().newStatus(IStatus.ERROR, NLS.bind(ApplicationMessages.ActivityRunner_ActivityRunner_Exception, EcoreUtil.getURI(_activity)), t));
    }
    try {
      // Pre-Invoke validation
      Diagnostic diagnostic = manager.canInvoke();
      if (diagnostic.getSeverity() == Diagnostic.ERROR) {
        throw DiagnosticException.toCoreException(new DiagnosticException(diagnostic));
      }
    } catch (CoreException ce) {
      throw ce;
    } catch (InvocationException ie) {
      throw new CoreException(EGFApplicationPlugin.getDefault().newStatus(IStatus.ERROR, NLS.bind(ApplicationMessages.ActivityRunner_PreInvokeProblems_message, EcoreUtil.getURI(_activity)), ie));
    }
    Diagnostic diagnostic = null;
    try {
      // Invoke
      int ticks = manager.getSteps();
      SubMonitor subMonitor = SubMonitor.convert(monitor, NLS.bind(EGFCoreMessages.Production_Invoke, EMFHelper.getText(manager.getElement())), (1000 * ticks));
      if (ticks == 1) {
        EGFApplicationPlugin.getDefault().logInfo(NLS.bind(ProducerMessages.Activity_Invocation, EMFHelper.getText(_activity)));
      } else {
        EGFApplicationPlugin.getDefault().logInfo(NLS.bind(ProducerMessages.Activity_Invocations, EMFHelper.getText(_activity), ticks));
      }
      diagnostic = manager.invoke(subMonitor.newChild(1000 * ticks, SubMonitor.SUPPRESS_NONE));
    } catch (Throwable t) {
      throw new CoreException(EGFApplicationPlugin.getDefault().newStatus(IStatus.ERROR, NLS.bind(ApplicationMessages.ActivityRunner_ActivityRunner_Exception, EcoreUtil.getURI(_activity)), t));
    }
    // Post Invoke Validation
    if (diagnostic.getSeverity() == Diagnostic.ERROR) {
      throw DiagnosticException.toCoreException(new DiagnosticException(diagnostic));
    }
    try {
      // Dispose
      manager.dispose();
    } catch (Throwable t) {
      throw new CoreException(EGFApplicationPlugin.getDefault().newStatus(IStatus.ERROR, ApplicationMessages.ActivityRunner_ActivityRunner_Exception, t));
    }
  }

}