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Thread: JUNG loading grpah question

  1. #1
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    Default JUNG loading grpah question

    i get this error when i try to load the graph from the text file

    java.io.IOException: specified 'source' attribute "A" does not match any node ID
    at edu.uci.ics.jung.io.GraphMLReader.parse(GraphMLRea der.java:246)
    at edu.uci.ics.jung.io.GraphMLReader.load(GraphMLRead er.java:192)
    at hyperGraph.loadGraph(hyperGraph.java:189)
    at hyperGraph.main(hyperGraph.java:233)

    here is my loading graph code
    class VertexM {
            String name = "";
     
     
            public VertexM() {
            }
     
            public VertexM(String name) {
                    this.name = name;
            }
     
            public String toString() { 
                    return name; 
            }
     
            public boolean equals(Object obj) {
                    if (obj == this) {
                            return true;
                    }
     
                    if (obj == null) {
                            return false;
                    }
                    VertexM other = (VertexM) obj;
     
                    boolean a = this.getName().equals(other.getName());
                    return a;
            }
     
            public void setName(String name) {
                    this.name = name;
            }
     
            public String getName() {
                    return name;
            }
     
            public int getCount() {
                    return 1;
            }
     
            public int hashCode() {
                    return name.hashCode();
            }
    }
     
    class EdgeM {
            float count;
            String id = "";
     
            public EdgeM() {
                    this.count = 0;
            }
     
            public EdgeM(String d, String v1, String v2) {
                    this.id = v1 + v2;
                    this.count = Integer.parseInt(d);
            }
     
            public String toString() { // Always good for debugging
                    return id;
            }
     
            public void addCount() {
                    count++;
            }
     
            public void setId(String id) {
                    this.id = id;
            }
     
            public float getCount() {
                    return count;
            }
     
            public boolean equals(Object obj) {
                    if (obj == this) {
                            return true;
                    }
    )
                    if (obj == null) {
                            return false;
                    }
                    EdgeM other = (EdgeM) obj;
     
                    boolean a = this.toString().equals(other.toString());
                    return a;
            }
     
            @Override
            public int hashCode() {
                    int result = Math.round(count) * 37 + id.hashCode();
                    return result;
            }
    }
     
     
    public static UndirectedSparseGraph<VertexM, EdgeM> loadGraph(Reader reader) {
                    class EdgeMFactory implements Factory<EdgeM> {
     
                            @Override
                            public EdgeM create() {
                                    return new EdgeM();
                            }
     
                    }
     
                    class VertexMFactory implements Factory<VertexM> {
                            public VertexM create() {
                                    return new VertexM();
                            }
     
                    }
                    GraphMLReader<UndirectedSparseGraph<VertexM, EdgeM>, VertexM, EdgeM> graphReader =
    null;
                    try {
                            graphReader = new GraphMLReader<UndirectedSparseGraph<VertexM, EdgeM>, VertexM,
    EdgeM>(
                                            new VertexMFactory(), new EdgeMFactory());
                    } catch (ParserConfigurationException e1) {
                            e1.printStackTrace();
                    } catch (SAXException e1) {
                            e1.printStackTrace();
                    }
     
                    UndirectedSparseGraph<VertexM, EdgeM> fixGraph = new
    UndirectedSparseGraph<VertexM, EdgeM>();
                    try {
                            graphReader.load(reader, fixGraph);
                            Map<String, GraphMLMetadata<VertexM>> nodeMetaData = graphReader
                                            .getVertexMetadata();
     
                            for (VertexM node : fixGraph.getVertices()) {
                                    String nodeName = ((String)
    (nodeMetaData.get("NodeName").transformer.transform(node)));
                                    System.out.println("NODE" + nodeName);
     
                                    node.setName(nodeName);
                            }
     
                    } catch (IOException e) {
                            e.printStackTrace();
                    }
     
                    return fixGraph;
            }
     
            /**
             * @param args
             * @throws SAXException
             * @throws ParserConfigurationException
             */
            public static void main(String[] args) {
     
                      try { FileReader in = new FileReader(
                      "C:\\Program Files\\Eclipse for FYP\\output\\test.txt"); 
                      Hypergraph<VertexM, EdgeM> hg = loadGraph(in);
                      System.out.println(hg.getVertices()); } catch
                      (ArrayIndexOutOfBoundsException e) {
     
                      System.out.println("Usage: java ReadFile filename\n");
     
                      } catch (IOException e) { e.printStackTrace(); }
    }

    my save file is
    <?xml version="1.0" encoding="UTF-8"?>
    <graphml xmlns="http://graphml.graphdrawing.org/xmlns/graphml"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns/graphml">
    <key id="NodeName" for="node">
    <desc>File Name</desc>
    <default></default>
    </key>
    <key id="EdgeName" for="edge">
    <desc>Edge Visit Name</desc>
    <default></default>
    </key>
    <key id="EdgeCount" for="edge">
    <desc>Edge Visit Count</desc>
    <default></default>
    </key>
    <graph edgedefault="undirected">
    <node id="A">
    <data key="NodeName">A</data>
    </node>
    <node id="B">
    <data key="NodeName">B</data>
    </node>
    <node id="C">
    <data key="NodeName">C</data>
    </node>
    <edge source="A" target="C">
    <data key="EdgeName">AC</data>
    <data key="EdgeCount">3.0</data>
    </edge>
    <edge source="A" target="B">
    <data key="EdgeName">AB</data>
    <data key="EdgeCount">2.0</data>
    </edge>
    </graph>
    </graphml>
    is there any problem for my code?
    Last edited by copeg; February 14th, 2011 at 08:58 AM.


  2. #2
    Super Moderator copeg's Avatar
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    Default Re: JUNG loading grpah question

    Cross posted at JUNG Loading graph question. While cross posting is not against the rules of this forum, we ask posters to be forthright in revealing other locations the same question was asked. For reasons why, see The problems with crossposting

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