JPA + @ClassBridge using the EntityManager possible?

mcbain4711 · **Joined:** Fri Apr 18, 2008 3:46 pm **Posts:** 2

Hi experts,

The "JPA with Hibernate" books says
"...Another problem is that an entity listener class isn’t allowed to use the EntityManager."

From the "Hibernate Search in Action" book i know that HB Search is implemented with 'HB-entity listener's.
Implies this that ist not allowed to use a JPA-Query within a custom ClassBridge???

If yes, what happens if a classbridge navigates to a lazy-loaded Property which needs to be loaded from the database or applies the restriction only to queries (which normally flushes the EM?)

How can i collect custom index-data with HQL and integrate it in the transparent indexing process?

Thanks,
Jens

mcbain4711 · **Joined:** Fri Apr 18, 2008 3:46 pm **Posts:** 2

No one an idea?

sanne.grinovero · **Posted:** Fri Sep 18, 2009 9:44 am

Quote:

what happens if a classbridge navigates to a lazy-loaded Property which needs to be loaded from the database or applies the restriction only to queries (which normally flushes the EM?)

that just works, I didn't know about the quote from the book; I'll ask anyway.

sanne.grinovero · **Posted:** Fri Sep 18, 2009 11:01 am

I've got an answer from Steve (Hibernate proj.lead) and he confirms that there are no problems in doing so,
provided the even is not the "flush" event; Hibernate Search is not using the classbridge during flush, so there are no problems.

Rhodan · **Joined:** Mon Sep 12, 2005 3:27 am **Posts:** 48

s.grinovero wrote:

I've got an answer from Steve (Hibernate proj.lead) and he confirms that there are no problems in doing so,
provided the even is not the "flush" event; Hibernate Search is not using the classbridge during flush, so there are no problems.

For the limitation on the "Flush event" see one of the highest voted outstanding bugs http://opensource.atlassian.com/project ... e/HHH-2763 and the statment, that it's a no go to do entity or collection 'work" inside the flush event cycle.