Gephi database import error

[Alan Pereyra]

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.

[Patrick Ian]

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?

[Michael Hunger]

We tried to. But got no support from the gephi people merging our changes into their master / deployment.

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[Patrick Ian]

I tried downloading the attached attributes nbm file that supposedly fixed it -- are these the changes you were trying to push? Is there somewhere I can download the working source tree?