How to connect to a remote neo4j instance using a GraphDatabaseService?

Question

We currently have a JavaEE deployment using Glassfish and the JCA neo4j-connector, which means neo4j is started as an EmbeddedGraphDatabase for which we can only use neo4j community.

My boss requires me to investigate on how to add high-availability, replication, and globally all services neo4j enterprise could allow us to use. In that direction, I'm currently thinking about modifying that CJA connector to no more use an embedded neo4j instance, but rather connect to a separate process eventually running on the same machine.

There are, however, some questions on that topic.

First of all, it seems there was in earlier versions of neo4j a RemoteGraphDatabaseService. it seems to be gone. is it really ? More important, our application uses JCA to coordinate transactions using XA between the various components. How can I keep that transaction coordination to an external neo4j instance considering the REST API doesn't seems to support customizable transaction size (one REST call IS one transaction for neo4j).

Answer 1

I think it should be pretty easy to modify the JCA connector to use HighlyAvailableGraphDatabase instead. You just have to pass in the config that is needed for HA, backup etc.