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 [EMAIL PROTECTED]
*
* 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:[EMAIL PROTECTED]";>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);
}
}
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