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From Pinaki Poddar <>
Subject Re: [jira] Commented: (OPENJPA-980) EhCache implementation of OpenJPA caching
Date Mon, 16 Mar 2009 20:06:33 GMT

The core strength of an open source project is participation of a community
of users and contributors. OpenJPA is no exception and will be enriched by
facilitating individual contributors. How we can facilitate such a process
with due regard to the concerns you raise is the purpose of OPENJPA-979. As
it is noted in OPENJPA-979, that there must be a distinction in terms of
responsibility/warranty of core assets and contributions. The exact nature
of such distinction needs to fleshed out.

JIRA wrote:
>     [
> ] 
> Kevin Sutter commented on OPENJPA-980:
> --------------------------------------
> I have to question whether OpenJPA is the right repository for these type
> of plugin implementations.  OpenJPA defines and implements the plugin
> interface, but do we want to be in the "business" of developing and
> supporting the various plugin implementations?  Take this EhCache
> implementation as an example.  I'm sure this implementation provides the
> level of function required by the submitter.  But, how do we know it's a
> general solution that can be used outside of the submitter's environment
> and needs?  And, do we plan to sign up for support for this
> implementation?  What version(s) of EhCache does this plugin work with? 
> And, who's going to support the next version (or past versions) of
> EhCache?
> IMHO, the implementation of a plugin should be provided with the product
> that is being plugged in.  In this particular example, should this EhCache
> implementation be owned by the EhCache team?  Now I know this particular
> case probably won't fly, since Gavin probably doesn't want to promote the
> use of OpenJPA...  :-)  But, you get the picture.
> Maybe we should consider a sub-project to house plugin implementations
> that wish to be supported?  Something like OpenJPA-Plugins, or
> OpenJPA-Caches, or OpenJPA-EhCache (depending on the desired granularity). 
> We just need to be aware of what we're signing up for when we accept
> contributions like this.  Thanks.
> Kevin
>> EhCache implementation of OpenJPA caching
>> -----------------------------------------
>>                 Key: OPENJPA-980
>>                 URL:
>>             Project: OpenJPA
>>          Issue Type: New Feature
>>          Components: datacache
>>    Affects Versions: 1.2.0
>>            Reporter: Craig
>> I created QueryCache and DataCache implementations for EhCache. I think
>> it would be great to see this included in a future version of OpenJPA, as
>> presently, OpenJPA includes only its own implementation.
>> The code is licensed under the APL 2.0 and includes unit tests.
>> My implementation is based on the work of Pinaki Poddar, who created a
>> DataCache implementation for Coherence - I think that would also be nice
>> to include.
>> Thanks!
> -- 
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