Some general comments... Extending the OpenJPA kernel for JDO is definitely doable. The original code base (BEA's Kodo) had a JDO personality, but it was never contributed to the OpenJPA project. At least for a period of time (I don't know if it still is), BEA and then Oracle continued to support this JDO personality internally. So, I know it's a doable endeavor...
The other bit of news is that our own Craig Russell is a bit of JDO expert... :-) And, he might even know a thing or two about the JDO personality. Good luck, Kevin On Mon, Mar 7, 2011 at 10:22 PM, Todd Nine <t...@spidertracks.com> wrote: > Hi guys, > I've previously developed a JDO plugin for Cassandra using > Datanucleus. I'm now helping the datastax guys develop the JPA plugin > using open JPA. I'm having some trouble I would use a hand with from > developers. > > Current version 2.1.0 > > > Issue 1: Defining an identity generator at the plugin level. > > > Most of our users will want a TimeUUID generated as the default entity > Id. We do not want to do this as a string, but rather want to use the > actual UUID object. As you can see from my code here, I'm defining the > generator at the entity level. Since this will be a default use case > for a lot of our users, I want to make it a standard part of our plugin. > > > https://github.com/riptano/hector-jpa/blob/master/src/test/java/com/datastax/hectorjpa/bean/TimeUuidEntity.java > > and > > > https://github.com/riptano/hector-jpa/blob/master/src/main/java/com/datastax/hectorjpa/sequence/TimeUuid.java > > > > Issue 2: Allocate is never invoked on my sequence generator, I'm > assuming this is due to incorrect setup that will be resolved in issue > 1. > > > Issue 3: Do I need to synchronize the next call internally in my > Sequence generator? Given the high throughput of our JPA clients, I > don't want to accidentally return the same UUID to multiple callers. > > > Thanks, > > > > -- > todd > SENIOR SOFTWARE ENGINEER > > todd nine| spidertracks ltd | 117a the square > po box 5203 | palmerston north 4441 | new zealand > P: +64 6 353 3395 > E: t...@spidertracks.co.nz W: www.spidertracks.com > > > > > > >
