Configure Rexster to use Titan

Question

I'm trying to configure Rexster to use Titan by modifying the rexster.xml file in Rexster. But when I run

  http ://localhost:8182/graphs/mygraph 

in my browser I get a message saying:

{"message":"Graph [mygraph] could not be found"}.

This is the part of the rexster.xml file I've modified:

    <graph>
    <graph-name>mygraph</graph-name>
    <graph-type>com.thinkaurelius.titan.tinkerpop.rexster.TitanGraphConfiguration</graph-type>
        <graph-location>C:/titan-server-jre6-0.4.4/bin/mygraph</graph-location>
          <graph-read-only>false</graph-read-only>
              <properties>
                    <storage.backend>local</storage.backend>
                    <buffer-size>100</buffer-size>
              </properties>
              <extensions>
                <allows>
                  <allow>tp:gremlin</allow>
                </allows>
              </extensions>
    </graph>

I've added all the jar files in Titans lib folder into Rexster under config/ext/titan and I've created a graph in Titan by using the gremlin shell i Titan:

    g = TitanFactory.open('mygraph');
    g.createKeyIndex('name', Vertex.class);
    v = g.addVertex(null);
    v.setProperty('name','x');
    v.setProperty('type','person');
    v.setProperty('age',20);
    v1 = g.addVertex(null);
    v1.setProperty('name','y');

    v1.setProperty('type','person');

    v1.setProperty('age',22);
    e = g.addEdge(null, v, v1, 'knows');
    e1 = g.addEdge(null, v1, v, 'knows');
    g.shutdown();

What am I missing?

[UPDATE]:

I had placed the jar files from Titan in the wrong directory in rexster, the are now in the right place in rexster. But when I now run the rexster server I get the following output:

    [INFO] Application - .:Welcome to Rexster:.
    [INFO] RexsterProperties - Using [C:\rexster-server-2.5.0\config\rexster.xml] as
    configuration source. 
    [INFO] Application - Rexster is watching [C:\rexster-server-2.5.0\config\rexster
    .xml] for change.
    Exception in thread "main" java.lang.AbstractMethodError: com.thinkaurelius.tita 
    n.tinkerpop.rexster.TitanGraphConfiguration.configureGraphInstance(Lcom/tinkerpo
    p/rexster/config/GraphConfigurationContext;)Lcom/tinkerpop/blueprints/Graph;
    at com.tinkerpop.rexster.config.GraphConfigurationContainer.getGraphFrom
    Configuration(GraphConfigurationContainer.java:124)
    at com.tinkerpop.rexster.config.GraphConfigurationContainer.<init>(Graph 
    ConfigurationContainer.java:54)
    at com.tinkerpop.rexster.server.XmlRexsterApplication.reconfigure(XmlRex
    sterApplication.java:99)
    at com.tinkerpop.rexster.server.XmlRexsterApplication.<init>(XmlRexsterA
    pplication.java:47)
    at com.tinkerpop.rexster.Application.<init>(Application.java:97)
    at com.tinkerpop.rexster.Application.main(Application.java:189)

How can I resolve this?

Answer 1

Problem solved by changing the version of the rexster server, before I was using version 2.5.0. I am now using version 2.4.0 and version 0.4.4 of Titan.