[jgrapht-users] Doubt - Graph class / Weighted Graphs

[Anderson A. <and...@ya...>]

Due to some changes with Graph class provided with
JGraphT 0.7 lib, I am experiencing a problem.

/* An example code using JGraphT 0.6 lib */

Graph graph = new WeightedPseudograph();

INode node1 = new Node2D();
graph.addVertex(node1);
INode node2 = new Node2D();
graph.addVertex(node2);

MyEdge edge = new MyEdge(node1, node2, f);
edge.setWeight(feature.getGeometry().getLength());
graph.addEdge(edge);

/* In 0.7 lib these relations were modified,
 * Graph class has no more this addEdge method.
 * Using JGraphT 0.7 lib, I'm trying:
 */

WeightedGraph graph = new WeightedPseudograph(
Edge.class );

INode node1 = new Node2D();
graph.addVertex(node1);
INode node2 = new Node2D();
graph.addVertex(node2);

graph.setEdgeWeight(graph.addEdge(node1, node2),
feature.getGeometry().getLength());

/* But I got a RuntimeException: Edge Factory failed
*/

java.lang.RuntimeException: Edge factory failed
	at
org.jgrapht.graph.ClassBasedEdgeFactory.createEdge(Unknown
Source)
	at
org.jgrapht.graph.AbstractBaseGraph.addEdge(Unknown
Source)
	at
com.shortestpath.topology.GraphFactory.createGraph(GraphFactory.java:124)
	at
com.shortestpath.jgraphtLib.PlugIn.run(PlugIn.java:101)
	at 

com.vividsolutions.jump.workbench.ui.task.TaskMonitorManager$TaskWrapper.run(TaskMonitorManager.java:118)
	at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.InstantiationException:
com.shortestpath.topology.Edge
	at java.lang.Class.newInstance0(Class.java:335)
	at java.lang.Class.newInstance(Class.java:303)
	... 6 more

   I´ll be thankfull for any help.

   Anderson.



 
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