Comment utiliser GraphMLReader2 dans Jung?

Question

Je veux utiliser la classe GraphMLReader pour lire un graphe Undirected de graphML avec JUNG2.0.

Le code est le suivant:

import edu.uci.ics.jung.io.*; 
import edu.uci.ics.jung.io.graphml.*; 
import java.io.*; 
import java.util.*; 
import org.apache.commons.collections15.Transformer; 
import edu.uci.ics.jung.graph.*; 

class Vertex{ 
     int id; 
     String type; 
     String value; 
} 

class Edge{ 
     int id ; 
     String type; 
     String value; 
} 

public class Loader{ 
     static String src = "test.xsl"; 

     public static void Main(String[] args){ 
       Reader reader = new FileReader(src); 
       Transformer<NodeMetadata, Vertex> vtrans = new Transformer<NodeMetadata,Vertex>(){ 
         public Vertex transform(NodeMetadata nmd){ 
           Vertex v = new Vertex() ; 
           v.type = nmd.getProperty("type"); 
           v.value = nmd.getProperty("value"); 
           v.id = Integer.valueOf(nmd.getId()); 
           return v; 
         } 
       }; 
       Transformer<EdgeMetadata, Edge> etrans = new Transformer<EdgeMetadata,Edge>(){ 
         public Edge transform(EdgeMetadata emd){ 
           Edge e = new Edge() ; 
           e.type = emd.getProperty("type"); 
           e.value = emd.getProperty("value"); 
           e.id = Integer.valueOf(emd.getId()); 
           return e; 
         } 
       }; 
       Transformer<HyperEdgeMetadata, Edge> hetrans = new Transformer<HyperEdgeMetadata,Edge>(){ 

         public Edge transform(HyperEdgeMetadata emd){ 
           Edge e = new Edge() ; 
           e.type = emd.getProperty("type"); 
           e.value = emd.getProperty("value"); 
           e.id = Integer.valueOf(emd.getId()); 
           return e; 
         } 
       }; 
       Transformer< GraphMetadata , UndirectedSparseGraph> gtrans = new Transformer<GraphMetadata,UndirectedSparseGraph>(){ 
         public UndirectedSparseGraph<Vertex,Edge> transform(GraphMetadata gmd){ 
           return new UndirectedSparseGraph<Vertex,Edge>(); 
         } 
       }; 



       GraphMLReader2< UndirectedSparseGraph<Vertex,Edge> , Vertex , Edge> gmlr = 
         new GraphMLReader2< UndirectedSparseGraph<Vertex,Edge> ,Vertex, Edge>(
             reader, 
             gtrans, 
             vtrans, 
             etrans, 
             hetrans); 
       UndirectedSparseGraph<Vertex,Edge> g = gmlr.readGraph(); 

       return ; 

     } 
} 

Cependant, alerte compilateur:

Loader.java:60: cannot find symbol 
symbol : constructor GraphMLReader2(java.io.Reader,org.apache.commons.collections15.Transformer<edu.uci.ics.jung.io.graphml.GraphMetadata,edu.uci.ics.jung.graph.UndirectedSparseGraph>,org.apache.commons.collections15.Transformer<edu.uci.ics.jung.io.graphml.NodeMetadata,Vertex>,org.apache.commons.collections15.Transformer<edu.uci.ics.jung.io.graphml.EdgeMetadata,Edge>) 
location: class edu.uci.ics.jung.io.graphml.GraphMLReader2<edu.uci.ics.jung.graph.UndirectedSparseGraph<Vertex,Edge>,Vertex,Edge> 
    new GraphMLReader2< UndirectedSparseGraph<Vertex,Edge> ,Vertex, Edge>(
^
1 error 

Comment puis-je résoudre ce problème? Merci.

Answer 1

Dans votre déclaration de transformateur graphique, vous devez également inclure les types de vertex et de bord entre crochets. Comme ceci:

Transformer< GraphMetadata , UndirectedSparseGraph<Vertex, Edge> > gtrans