commons-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From jvan...@apache.org
Subject cvs commit: jakarta-commons-sandbox/graph/src/java/org/apache/commons/graph/visualize GraphMLVisualizer.java
Date Thu, 29 Nov 2001 21:12:40 GMT
jvanzyl     01/11/29 13:12:40

  Added:       graph/src/java/org/apache/commons/graph/visualize
                        GraphMLVisualizer.java
  Log:
  - start of a GraphML visualizer so that I can use royere to view
    dependency graphs.
  
  Revision  Changes    Path
  1.1                  jakarta-commons-sandbox/graph/src/java/org/apache/commons/graph/visualize/GraphMLVisualizer.java
  
  Index: GraphMLVisualizer.java
  ===================================================================
  package org.apache.commons.graph.visualize;
  
  /* ====================================================================
   * 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
   *    "Apache BCEL" 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",
   *    "Apache BCEL", 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 java.io.OutputStream;
  
  import org.apache.commons.graph.Constants;
  import org.apache.commons.graph.DFS;
  import org.apache.commons.graph.Edge;
  import org.apache.commons.graph.Graph;
  import org.apache.commons.graph.Vertex;
  
  /**
   * Visualizes graphs into the <A HREF="http://www.fmi.uni-passau.de/Graphlet/">GML</A>
   * format.
   *
   * @version $Id: GraphMLVisualizer.java,v 1.1 2001/11/29 21:12:40 jvanzyl Exp $
   * @author  <a href="mailto:jvanzyl@zenplex.com">Jason van Zyl</a>
   */
  public class GraphMLVisualizer 
      extends GraphVisualizer 
  {
    private Graph graph;
  
    /**
     * @param out stream to print output to
     * @param verbose toggle verbosity of output
     */
    public GraphMLVisualizer(OutputStream out, int verbose) {
      super(out, verbose);
    }
  
    public void discoverGraph(Graph g) {
      String d = g.isDirected()? "true" : "false";
  
      graph = g;
      
      println(0, "<GraphXML>");
      println(0, "<graph isDirected=\"" + d + "\" id=\"" + Vertex.getCounter() + "\">");
    }
  
    public void finishGraph(Graph g) 
    {
      println(0, "</graph>");
      println(0, "</GraphXML>");
      out.close();
    }
  
    public void discoverVertex(Vertex v) 
    {
      println(0, "<node name=\"" + v.getIdent() + "\"/>");
    }
  
    public void finishVertex(Vertex v) {}
  
    public void discoverEdge(Edge e) 
    {
      int src    = graph.getSource(e).getIdent();
      int target = graph.getTarget(e).getIdent();
  
      println(0, "<edge source=\"" + src + "\" target=\"" + target + "\"/>");
    }
  
    public void finishEdge(Edge e) {}
  
    /**
     * Visualize graph g with this Visualizer.
     *
     * @param g graph to visualize
     * @param start node to start at
     */
    public void visualize(Graph g, Vertex start) {
      new DFS(this).start(g, start);
    }
  }
  
  
  

--
To unsubscribe, e-mail:   <mailto:commons-dev-unsubscribe@jakarta.apache.org>
For additional commands, e-mail: <mailto:commons-dev-help@jakarta.apache.org>


Mime
View raw message