[jbosscache-dev] Re: ComponentRegistry and TransactionManager

[Manik Surtani]

Just added a unit test to prove this as well.


On 11 Jan 2008, at 13:48, Manik Surtani wrote:

> Brian
>
> This is a bug in the ComponentRegistry.  The way it works at the  
> moment, when we start(), we recreate any components where  
> construction differs based on configuration, such as the interceptor  
> chain and node factory.  the TM should be there as well - will patch  
> this up and check it into trunk.
>
> Cheers
> Manik
>
>
> On 10 Jan 2008, at 18:39, Brian Stansberry wrote:
>
>> Interesting change from the ComponentRegistry has bitten me in the  
>> ass.
>>
>> The resolution of the TransactionManager used to take place in  
>> CacheImpl.create(), now it's happening via  
>> DefaultCacheFactory.bootstrap() -- i.e. as part of cache  
>> construction.
>>
>> This causes problems with the Hibernate integration, which injects  
>> the TM it knows about into the RuntimeConfig of the already- 
>> existing cache, before it calls create().  But that's too late --  
>> the TransactionManagerFactory has already logged an error about a  
>> missing TM.
>>
>> A solution would be for Hibernate to get a Configuration first,  
>> inject the TM, and then build the cache.  But the CacheManager API  
>> doesn't expose a good way to do that.  An external caller can't  
>> modify the registered configurations.
>>
>> So:
>>
>> 1) What do you think about changing the ConfigurationRegistry API  
>> to allow some sort of updating of registered configurations?
>>
>> 2) In general, do you think it's a problem that we are now  
>> resolving things earlier in the process than we used to?  Other  
>> users may also be doing things programatically after cache  
>> construction but before create/start.
>>
>> -- 
>> Brian Stansberry
>> Lead, AS Clustering
>> JBoss, a division of Red Hat
>> brian.stansberry at redhat.com
>
> --
> Manik Surtani
> Lead, JBoss Cache
> manik at jboss.org
>
>
>
>
>
>
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--
Manik Surtani
Lead, JBoss Cache
manik at jboss.org