/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jbpm.pvm.internal.model.op;

import org.jbpm.api.model.Event;
import org.jbpm.pvm.internal.job.MessageImpl;
import org.jbpm.pvm.internal.model.ActivityImpl;
import org.jbpm.pvm.internal.model.ExecutionImpl;
import org.jbpm.pvm.internal.model.ObservableElementImpl;


/**
 * @author Tom Baeyens
 */
public class TransitionEndActivity extends AtomicOperation {

  private static final long serialVersionUID = 1L;

  public boolean isAsync(ExecutionImpl execution) {
    return false;
  }

  public void perform(ExecutionImpl execution) {
    ActivityImpl activity = execution.getActivity();
    
    ExecutionImpl propagatingExecution = execution;
    if (activity.isLocalScope()) {
      propagatingExecution = execution.destroyScope(activity);
    }

    ActivityImpl parentActivity = activity.getParentActivity();
    ActivityImpl destination = execution.getTransition().getDestination();
    if ( (parentActivity!=null)
         && (!parentActivity.contains(destination))
       ) {
      propagatingExecution.setActivity(parentActivity);
      propagatingExecution.fire(Event.END, parentActivity, AtomicOperation.TRANSITION_END_ACTIVITY);
    } else {
      propagatingExecution.performAtomicOperation(AtomicOperation.TRANSITION_TAKE);
    }
  }

  public MessageImpl< ? > createAsyncMessage(ExecutionImpl execution) {
    throw new UnsupportedOperationException("please implement me");
  }

  public String toString() {
    return "TransitionEndActivity";
  }
}