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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
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 */

package com.sun.enterprise.deployment.node;

import java.util.HashMap;
import java.util.Map;

/**
 * This class implements VersionUpgrade and can be used as a
 * convenience class to cause an element name to be removed.
 *
 * @author  Gerald Ingalls
 * @version 
 */
public abstract class RemoveVersionUpgrade implements VersionUpgrade {
  protected Map matches;
  protected String replacedElementName;
  public RemoveVersionUpgrade(String replacedName) {
    replacedElementName = replacedName;
    matches = new HashMap();
    init();
  }

  /**
   * Return the kind of processing to do
   * @return the kind of processing to do
   */
  public UpgradeType getUpgradeType() {
    return UpgradeType.REMOVE_ELEMENT;
  }

  /**
   * Initialize
   */
  public void init() {
    matches.put(replacedElementName, null);
  }

  /**
   * Return the map of xml element to match
   * @return the map of xml element to match
   */
  public Map getMatchXPath() {
    return matches;
  }

  /**
   * Return the replacement element name
   * @return the replacement element name
   */
  public String getReplacementElementName() {
    return null;
  }

  /**
   * Return the replacement element value
   * @return the replacement element value
   */
  public String getReplacementElementValue() {
    return null;
  }

  /**
   * Return whether the matched items are valid.
   * @return whether the matched items are valid.
   */
  public boolean isValid() {
    return false;
  }
}