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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2008, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file 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.jboss.system.metadata;

import java.util.Iterator;
import java.util.Set;

import org.jboss.util.collection.CollectionsFactory;

/**
 * AbstractMetaDataVisitorNode.
 * 
 * @author Adrian Brock
 * @version $Revision: 82920 $
 */
public class AbstractMetaDataVisitorNode implements ServiceMetaDataVisitorNode
{
   public Iterator getChildren()
   {
      Set children = CollectionsFactory.createLazySet();
      addChildren(children);
      if (children.size() == 0)
         return null;
      else
         return children.iterator();
   }

   public void visit(ServiceMetaDataVisitor visitor)
   {
      visitor.visit(this);
   }

   /**
    * Add to the children
    * 
    * @param children the children
    */
   protected void addChildren(Set children)
   {
   }
}