ExecutionUnit.java

/*
 * Copyright (C) 2009 eXo Platform SAS.
 *
 * 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.exoplatform.container.component;

/**
 * Created by The eXo Platform SAS Author : Tuan Nguyen
 * tuan08@users.sourceforge.net Sep 17, 2005
 */
abstract public class ExecutionUnit extends BaseComponentPlugin
{
   private ExecutionUnit next_;

   public void addExecutionUnit(ExecutionUnit next)
   {
      if (next_ == null)
         next_ = next;
      else
         next_.addExecutionUnit(next);
   }

   public ExecutionUnit getNextUnit()
   {
      return next_;
   }

   abstract public Object execute(ExecutionContext context) throws Throwable;
}