Re: [jgrapht-users] VertexLabelProvider, EdgeLabelProvider not called

[John V. S. <js...@gm...>]

Looks like you have to call setPrintLabels() first.

JVS

Oliver Schrenk wrote:
> Hi,
> 
> I have some trouble printing the labels using the GmlExporter, they are simply not called.
> 
> Any idea?
> 
> Best regards
> Oliver Schrenk
> 
> 
> public Network() {
> 		graph = new DirectedWeightedMultigraph<Node, Edge>(Edge.class);
> 		init();
> 	}
> 
> 	private void init() {
> 		Node previous = new Node(1, "label_1");
> 		Node current = new Node(2, "label_2");
> 
> 		graph.addVertex(previous);
> 		graph.addVertex(current);
> 		graph.addEdge(previous, current);
> 
> 	}
> 
> 	public void export() {
> 		GmlExporter<Node, Edge> exporter = new GmlExporter<Node, Edge>(
> 				new VertexIdProvider(), new VertexLabelProvider(),
> 				new EdgeIdProvider(), new EdgeLabelProvider());
> 		exporter.export(new BufferedWriter(new OutputStreamWriter(System.out)),
> 				(DirectedGraph<Node, Edge>) graph);
> 
> 	}
> 	
> 	class VertexIdProvider implements VertexNameProvider<Node> {
> 
> 		@Override
> 		public String getVertexName(Node node) {
> 			return Long.toString(node.getId());
> 		}
> 
> 	}
> 
> 	class VertexLabelProvider implements VertexNameProvider<Node> {
> 
> 		@Override
> 		public String getVertexName(Node node) {
> 			System.out.println("THIS IS NEVER CALLED");
> 			return node.getLabel();
> 		}
> 
> 	}
> 
> 	class EdgeIdProvider implements EdgeNameProvider<Edge> {
> 
> 		@Override
> 		public String getEdgeName(Edge edge) {
> 			return Long.toString(edge.getId());
> 		}
> 
> 	}
> 
> 	class EdgeLabelProvider implements EdgeNameProvider<Edge> {
> 
> 		@Override
> 		public String getEdgeName(Edge edge) {
> 			System.out.println("THIS IS NEVER CALLED");
> 			return edge.getLabel();
> 		}
> 
> 	} 
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