Query existing berkeleydb database

[matthew...@tieto.com]

Gremlin newbie question:

I have a titan dabatase using berkeleyje as back end. The database is generated by and used by a java-based application.

That's all fine, but I would like to be able to run arbitrary queries against the database, and from what I read, I understood Gremlin could do this.

So I have installed 'titan-1.00-hadoop1' separately from the application, and set up a simple config file in order to be able to run germlin against the db:

storage.backend=berkeleyje

storage.directory=/myapp/db

I seem to be able to connect OK

gremlin> g=TitanFactory.open('../conf/titan-berkeleyje.properties')

==>standardtitangraph[berkeleyje:/myapp/db]

But thereafter, whatever commands I run result in an error. For example:

gremlin> g.V.has('type','account').next()

No such property: V for class: com.thinkaurelius.titan.graphdb.database.StandardTitanGraph

Display stack trace? [yN]

Can somebody please point me in the right direction? Is there some detailed documentation for the Gremlin query syntax somewhere?

Thanks

Matthew

[Daniel Kuppitz]

Minor issue. Queries require a traversal source, hence do:

graph = TitanFactory.open('../conf/titan-berkeleyje.properties')

g = graph.traversal()

Cheers,

Daniel

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[matthew...@tieto.com]

Thanks Daniel! Works a treat now.

Matthew