/*
 * 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.wire.descriptor;

import java.util.ArrayList;
import java.util.List;

import org.jbpm.pvm.internal.cmd.CommandService;
import org.jbpm.pvm.internal.svc.Interceptor;
import org.jbpm.pvm.internal.wire.Descriptor;
import org.jbpm.pvm.internal.wire.WireContext;
import org.jbpm.pvm.internal.wire.WireDefinition;

/**
 * @author Tom Baeyens
 */
public class CommandServiceDescriptor extends AbstractDescriptor {

  private static final long serialVersionUID = 1L;
  
  CommandService commandService;
  List<Descriptor> interceptorDescriptors;

  public Object construct(WireContext wireContext) {
    CommandService interceptedCommandService = commandService;
    if (interceptorDescriptors!=null) {
      for (int i=interceptorDescriptors.size()-1 ; i>=0; i--) {
        Descriptor descriptor = interceptorDescriptors.get(i);
        Interceptor interceptor = (Interceptor) descriptor.construct(wireContext);
        interceptor.setNext(interceptedCommandService);
        interceptedCommandService = interceptor;
      }
    }
    return interceptedCommandService;
  }
  
  public Class< ? > getType(WireDefinition wireDefinition) {
    return (name==null ? CommandService.class : null);
  }
  
  public void addInterceptorDescriptor(Descriptor descriptor) {
    if (interceptorDescriptors==null) {
      interceptorDescriptors = new ArrayList<Descriptor>();
    }
    interceptorDescriptors.add(descriptor);
  }
  
  public void setCommandService(CommandService commandService) {
    this.commandService = commandService;
  }
}