What's the actual issue at hand?  Wanting to use Infinispan with Hibernate 3.6 
in AS 7?

On 6 Feb 2012, at 09:53, Galder Zamarreño wrote:

> Btw, this discussion should be extended to Infinispan dev list in case we can 
> improve on the custom commands SPI.
> 
> In the case of Hibernate 2LC, the custom command is really a cache specific 
> one, so we could potentially tie up cache specific custom commands to the 
> cache lifecycle, but still don't see how it can really help with the issue 
> below.
> 
> Begin forwarded message:
> 
>> From: Galder Zamarreño <[email protected]>
>> Subject: Re: looking again at AS7-3290 and Hibernate 4.0.1...
>> Date: February 6, 2012 10:49:03 AM GMT+01:00
>> To: Scott Marlow <[email protected]>
>> Cc: Tristan Tarrant <[email protected]>, Steve Ebersole 
>> <[email protected]>, Paul Ferraro <[email protected]>
>> 
>> 
>> On Feb 3, 2012, at 6:43 PM, Scott Marlow wrote:
>> 
>>> On 02/03/2012 10:33 AM, Scott Marlow wrote:
>>>> I was just reviewing the change we made to address
>>>> https://issues.jboss.org/browse/AS7-3290 (Infinispan needed to see the
>>>> Hibernate-Infinispan modules services, when AS7 constructs the
>>>> Infinispan global component registry).
>>>> 
>>>> This turns into a dependency from the AS7
>>>> org.jboss.as.clustering.infinispan module onto our
>>>> org.hibernate.infinispan module (contains the Hibernate-Infinispan 4.0.1
>>>> jar).
>>>> 
>>>> Community users are asking to use the Infinispan 2lc with Hibernate
>>>> 3.6.x also which we don't ship. I would imagine that the same request
>>>> will come in for OGM in the future.
>> 
>> If they wanna use Infinispan 2LC with Hibernate 3.6.x, they won't be able to 
>> use Infinispan 5.1.x. So far, 3.6.x has only been tested with 4.2.x.
>> 
>> Are you sure this is gonna be supported??
>> 
>>>> 
>>>> Is there another way to avoid this dependency between the constructor of
>>>> the Infinispan global component registry and all of the persistence
>>>> provider modules that want to use the 2lc?
>>> 
>>> Is this the commit that brought this requirement in? 
>>> https://github.com/hibernate/hibernate-orm/commit/cc9fbf42a9a75a2317675907ed077d84826117db
>>> 
>>> Could this be made optional or reverted in a 4.0.2.Final build?
>> 
>> Hmmmm, that would require going back to using a cache as a way to send evict 
>> all invalidation messages around the cluster which is a hack. Custom 
>> commands are the best way to handle this use case IMO. 
>> 
>> At the moment, these commands at their factories are loaded on startup, when 
>> the GCR is created.
>> 
>> I wonder if it would help if Infinispan would load them lazily? 
>> RemoteCommandFactory could potentially look up the command factory when it 
>> receives a request for a custom command, but you still have the same issue 
>> of needing to find Hibernate 2LC classes from Infinispan jar.
>> 
>> Btw, I don't see how different this problem is to when a user defines a 
>> custom cache loader (or any other SPIs we have) and wants to plug that into 
>> Infinispan. The CL where Infinispan is, is gonna need to know about these 
>> custom classes. Same thing happens for Hibernate 2LC which is implementing 
>> an SPI.
>> 
>>> 
>>>> 
>>>> Scott
>>> 
>> 
>> --
>> Galder Zamarreño
>> Sr. Software Engineer
>> Infinispan, JBoss Cache
>> 
> 
> --
> Galder Zamarreño
> Sr. Software Engineer
> Infinispan, JBoss Cache
> 
> 
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--
Manik Surtani
[email protected]
twitter.com/maniksurtani

Lead, Infinispan
http://www.infinispan.org




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