cvs commit: jakarta-commons-sandbox/graph2/src/java/org/apache/commons/graph/algorithm/search VisitorAdapter.java

[dd...@apache.org]

ddp         2003/07/24 05:35:15

  Added:       graph2/src/java/org/apache/commons/graph/algorithm/search
                        VisitorAdapter.java
  Log:
  Tomasz Skutnik's idea.
  
  Here is VisitorAdapter class, which is dummy (no operation) 
  implementation of Visitor interface. You know what is it for :)
  Please commit.
  
  Revision  Changes    Path
  1.1                  jakarta-commons-sandbox/graph2/src/java/org/apache/commons/graph/algorithm/search/VisitorAdapter.java
  
  Index: VisitorAdapter.java
  ===================================================================
  package org.apache.commons.graph.algorithm.search;
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2001 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Commons" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Commons", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  
  import org.apache.commons.graph.Edge;
  import org.apache.commons.graph.Graph;
  import org.apache.commons.graph.Vertex;
  
  /**
   * @author dixon-pd
   *
   * This is a do-nothing implementation of the
   * Visitor class.  Inherit from here if you would
   * like to implement Visitor, but really have no
   * need for some of the methods.  (Or if you have
   * no need for another superclass. . .)
   */
  public class VisitorAdapter implements Visitor {
  	
  	public VisitorAdapter() {}
  	
  	/**
  	 * @see org.apache.commons.graph.algorithm.search.Visitor#discoverGraph(Graph)
  	 */
  	public void discoverGraph(Graph graph) {
  	}
  
  	/**
  	 * @see org.apache.commons.graph.algorithm.search.Visitor#discoverVertex(Vertex)
  	 */
  	public void discoverVertex(Vertex vertex) {
  	}
  
  	/**
  	 * @see org.apache.commons.graph.algorithm.search.Visitor#discoverEdge(Edge)
  	 */
  	public void discoverEdge(Edge edge) {
  	}
  
  	/**
  	 * @see org.apache.commons.graph.algorithm.search.Visitor#finishEdge(Edge)
  	 */
  	public void finishEdge(Edge edge) {
  	}
  
  	/**
  	 * @see org.apache.commons.graph.algorithm.search.Visitor#finishVertex(Vertex)
  	 */
  	public void finishVertex(Vertex vertex) {
  	}
  
  	/**
  	 * @see org.apache.commons.graph.algorithm.search.Visitor#finishGraph(Graph)
  	 */
  	public void finishGraph(Graph graph) {
  	}
  
  }
  
  
  

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