[infinispan-dev] [ISPN-6] (Infinispan cache provider for Hibernate) Remaining TODOs, notes and questions

[Galder Zamarreno]

Hi,

Re: https://jira.jboss.org/jira/browse/ISPN-6

Source code for this is currently located in an Infinispan branch in the 
Hibernate SVN repo:

https://svn.jboss.org/repos/hibernate/core/branches/INFINISPAN/
http://anonsvn.jboss.org/repos/hibernate/core/branches/INFINISPAN/

I've picked this JIRA from Chris Bredesen. I'm waiting to get an answer 
to an email I sent him yesterday but in the mean time, here's a list of 
TODOs:

1. Current Infinispan region factory needs to point to a config with 
named caches. Suggested property name: hibernate.cache.region.ispn4.configs

2. Need a equivalent version of this region factory where cache manager 
is retrieved from JNDI. Suggsted property name: 
hibernate.cache.region.ispn4.manager

3. Configuration properties for named cache names. Suggested property names:
hibernate.cache.region.ispn4.cfg.entity
hibernate.cache.region.ispn4.cfg.collection
hibernate.cache.region.ispn4.cfg.query
hibernate.cache.region.ispn4.cfg.timestamps

4. Resolve TransactionalAccess, ReadOnlyAccess and BaseRegion TODOs.

5. Enhance query results region so that query changes are not propagated 
if invalidation is used and add query.localonly equivalent property. 
Suggested name: hibernate.cache.region.ispn4.query.localonly

6. Add more unit tests!

7. Document in wiki.

Some notes I've made while investigating this:

- Whereas with JBC2/3, we had the possibility of a shared cache for all 
types (entities, collections, query,...etc) and a multiplexed version 
where each type had a specific cache, in Infinispan, it only makes the 
latter. Amongst other reasons because we don't have eviction regions any 
more and so we can't exclude the timestamp modification region as we did 
in JBC2/3. Overall, having a single option is a good thing from a 
configuration and usability perspective! Remember how complex eviction 
region definition could get for entities...

Finally, a question to the list, specially for Brian/Steve who worked on 
the JBC2/3 integration layer:

- Do we need a similar timestamp region local cache implementation for 
an ISPN based cache provider?

Cheers,
-- 
Galder Zamarreño
Sr. Software Engineer
Infinispan, JBoss Cache