> IMHO you should start a branch > in the SVN so others can look at the code.
So, at https://svn.neo4j.org/laboratory/users/cgioran/neo4j-kernel-jta/ you can find the kernel component with my changes incorporated. The classes added are org.neo4j.kernel.impl.transaction.TransactionManagerImpl org.neo4j.kernel.impl.transaction.TransactionManagerService that are the hooks for providing custom transaction managers. The first is an extension of javax.transaction.TransactionManager adding support for startup and shutdown, an operation present in all tx managers but not part of their API. This provides the ability to plugin custom implementations in the TxModule. The second is a convenience class that is extended by tx managers that are to be provided as a service. Also, changes are present in org.neo4j.kernel.impl.transaction.TxModule for using this new way of doing things, org.neo4j.kernel.impl.transaction.TxManager org.neo4j.kernel.impl.transaction.ReadOnlyTxManager for them to fit in this and org.neo4j.kernel.EmbeddedGraphDbImpl org.neo4j.kernel.Config to bind them. This fork is (or should be) completely compatible with the official kernel, so it can be used as a drop in replacement. Any deviation is a bug and if reported it will be fixed. The second project is at https://svn.neo4j.org/laboratory/users/cgioran/JOTMService/ and is a sample implementation of a tx manager service for JOTM. To use this, build it, add the resulting jar to your classpath and, if you are using the new jta fork of the kernel, you can pass a configuration parameter of "tx_manager_impl"="jotm" to your EmbeddedGraphDatabase and presto!, if all is well you will be using a JOTM TxManager to do your thing. Of course, the jotm libraries must be also in your classpath, version 2.1.9 If this way of doing things is met with approval, I will write a complete guide to using the above, implementation and design details and as a result a how to for adding more external tx managers. There is more to come. CG _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
