[jgrapht-users] VertexLabelProvider, EdgeLabelProvider not called

[Oliver S. <oli...@gm...>]

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();
		}

	}