I'm getting the same error! The github tickets are
closed: https://github.com/gephi/gephi/issues/740
But this is clearly still a problem with the latest plugin. Are these
plugins still being maintained?
On Thursday, January 2, 2014 11:54:49 AM UTC-8, Alan Pereyra wrote:
>
> While attempting to import a database from Neo4j to Gephi, I get the
> following error:
>
> Exception in thread "main" java.lang.ClassCastException: java.lang.String
> cannot be cast to java.lang.Long
> at
> org.gephi.neo4j.plugin.impl.Neo4jDelegateProviderImpl.getNodeAttributeValue(Neo4jDelegateProviderImpl.java:37)
> at
> org.gephi.data.attributes.AttributeValueImpl.getValue(AttributeValueImpl.java:81)
> at
> org.gephi.data.attributes.AttributeValueImpl.equals(AttributeValueImpl.java:103)
> at
> org.gephi.data.attributes.AttributeRowImpl.setValue(AttributeRowImpl.java:153)
> at
> org.gephi.data.attributes.AttributeRowImpl.setValue(AttributeRowImpl.java:141)
> at
> org.gephi.data.attributes.AttributeRowImpl.setValue(AttributeRowImpl.java:128)
> at
> org.gephi.data.attributes.AttributeRowImpl.setValue(AttributeRowImpl.java:110)
> at
> org.gephi.neo4j.plugin.impl.GraphModelImportConverter.fillGephiNodeDataWithNeoNodeData(GraphModelImportConverter.java:160)
> at
> org.gephi.neo4j.plugin.impl.GraphModelImportConverter.createGephiNodeFromNeoNode(GraphModelImportConverter.java:135)
> at
> org.gephi.neo4j.plugin.impl.Neo4jImporterImpl.processNode(Neo4jImporterImpl.java:181)
> at
> org.gephi.neo4j.plugin.impl.Neo4jImporterImpl.importNodes(Neo4jImporterImpl.java:175)
> at
> org.gephi.neo4j.plugin.impl.Neo4jImporterImpl.importGraph(Neo4jImporterImpl.java:159)
> at
> org.gephi.neo4j.plugin.impl.Neo4jImporterImpl.doImport(Neo4jImporterImpl.java:137)
> at
> org.gephi.neo4j.plugin.impl.Neo4jImporterImpl.importDatabase(Neo4jImporterImpl.java:131)
> at
> org.gephi.neo4j.plugin.impl.Neo4jImporterImpl.importDatabase(Neo4jImporterImpl.java:91)
> at main.algo(main.java:62)
> at main.main(main.java:42)
>
> My source:
>
> graphDb = new EmbeddedGraphDatabase (DB_PATH);
> owned_addresses = graphDb.index().forNodes("nodes");
> final long ownerId = 1;
>
> // Import by traversing the entire ownership network along the
> "transfers" edges
> System.out.println("Importing Ownership Network from Neo4j
> Database...");
> final Collection<RelationshipDescription> relationshipDescription =
> new ArrayList<RelationshipDescription>();
> relationshipDescription.add(new
> RelationshipDescription(RelTypes.KNOWS, Direction.BOTH));
> //relationshipDescription.add(new
> RelationshipDescription(GraphBuilder.OwnerRelTypes.transfers,
> Direction.BOTH));
> final Neo4jImporter importer = new Neo4jImporterImpl();
>
> // Load the graph in memory
> importer.importDatabase(graphDb, ownerId,
> TraversalOrder.BREADTH_FIRST, Integer.MAX_VALUE, relationshipDescription);
> // Grab the graph that was loaded from the importer
> final ProjectController projectController =
> Lookup.getDefault().lookup(ProjectController.class);
> final Workspace workspace = projectController.getCurrentWorkspace();
> final GraphModel graph =
> Lookup.getDefault().lookup(GraphController.class).getModel(workspace);
> System.out.println("Graph Imported. Nodes: " +
> graph.getDirectedGraph().getNodeCount() + "Edges: " +
> graph.getDirectedGraph().getEdgeCount());
>
> // Layout
> final ForceAtlas2 layout = new ForceAtlas2(new ForceAtlas2Builder());
> layout.setGraphModel(graph);
>
> The data base was generated as follows:
>
>
> graphDb = new EmbeddedGraphDatabase(DB_PATH);
> Transaction tx = graphDb.beginTx();
> try {
> myFirstNode = graphDb.createNode();
> myFirstNode.setProperty("name", "Hellooo");
> mySecondNode = graphDb.createNode();
> mySecondNode.setProperty("name", "Hellooo2");
>
> myRelationship = myFirstNode.createRelationshipTo(mySecondNode,
> RelTypes.KNOWS);
> myRelationship.setProperty("relationship-type", "knows");
> myString = myFirstNode.getProperty("name").toString() + " "+
> myRelationship.getProperty("relationship-type").toString()+" "+
> mySecondNode.getProperty("name").toString();
> System.out.println(myString);
> tx.success();
> } finally {
> tx.finish();
> }
>
> Thank you!
> Alan.
>
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