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From Kevin Sutter <>
Subject Re: Will OpenJPA 2.1.x ever be incorporated into a WAS7 feature pack?
Date Fri, 23 Dec 2011 00:01:43 GMT
Hi Ron,
The WebSphere JPA documentation relies on the Apache OpenJPA documentation
(and the JPA specification itself) for much of the documentation.  We
didn't want to repeat (and maintain) all of the information that was
already available.

But, what is documented in the WebSphere InfoCenter are the extensions and
features that WebSphere provides beyond the basic Apache OpenJPA
deliverable.  These WebSphere features are built on top of the Apache
OpenJPA binaries.  So, anything that is written against Apache OpenJPA will
function as is when running within WebSphere.  The added benefit is that
you can also take advantage of the WebSphere extensions such as DB2
features, pureQuery, NLS translated messages, extended debugging
capabilities, etc.

Here's a link to the InfoCenter for the OSGi/JPA 2.0 Feature Pack:

To get to your first question...  Each Apache OpenJPA service stream
(branch) has an owner or manager.  This manager determines which fixes are
allowed into a given stream.  New development (whiz-bang features) are
normally developed in trunk, not one of the service streams.  But, there
have been occasions where a new feature is requested in a service stream.
Each request is processed separately -- that is, there is no cut-and-dried
rules as to when or if a feature is allowed into a service stream.

Welcome to WebSphere's JPA solution based on Apache OpenJPA!  I hope your
experience is a positive one.  :-)


On Thu, Dec 22, 2011 at 5:09 PM, Ron Grabowski <>wrote:

> Sounds reasonable. Historically have issues been the only thing that have
> prompted new snapshots of OpenJPA 2.0.x to be included in WAS7 fixpacks? If
> the OpenJPA community writes a new whiz-bang feature in the 2.0.x stream
> could it qualify for inclusion in a fixpack or has WAS7+OpenJPA 2.0.x
> entered a "no updates unless its broke" phase?
> Does anyone know if IBM maintains its own WebSphere JPA documentation? The
> "Getting Started with the Feature Pack for OSGi Applications and JPA 2.0"
> RedBook [1] states:
> "
> JPA for WebSphere Application Server comes with two JPA 2.0 persistence
> providers:
> - Apache OpenJPA persistence provider
> - JPA for WebSphere Application Server persistence provider
> "
> Is there documentation on-line for "JPA for WebSphere Application Server
> persistence provider" or is it the exact same as the documentation found on
> the OpenJPA site [2]?
> Sorry mailing-list for the IBM specific questions...feel free to passive
> aggressively point to me archived threads if this has already been
> discussed. My team recently moved from another vendor's JPA implementation
> to OpenJPA for its WAS compatibility and we're trying to learn the lay of
> the land.
> Thanks,
> Ron
> [1] -
> [2] -
> ________________________________
>  From: Kevin Sutter <>
> To:; Ron Grabowski <>
> Sent: Thursday, December 22, 2011 5:26 PM
> Subject: Re: Will OpenJPA 2.1.x ever be incorporated into a WAS7 feature
> pack?
> Hi Ron,
> WebSphere continues to support their JPA solutions via improvements to the
> corresponding OpenJPA offerings.  The OSGi/JPA 2.0 Feature Pack is based on
> the OpenJPA 2.0.x service stream.  WebSphere's v8 solution is based on the
> OpenJPA 2.1.x service stream.
> If issues are discovered in any of these environments, then an appropriate
> fix is developed for the Apache OpenJPA service stream and that is
> ultimately pulled into an iFix or fixpack for the WebSphere product.  An
> issue that is discovered in WAS v8, for example, can normally be
> back-ported to previous releases, such as the OSGi/JPA 2.0 Feature Pack (as
> it applies).
> New features for one release (ie. WebSphere v8) are not normally
> candidates for back-porting to previous releases (ie. OSGi/JPA 2.0 Feature
> Pack).
> Hope this helps,
> Kevin
> On Thu, Dec 22, 2011 at 4:11 PM, Ron Grabowski <>
> wrote:
> I couldn't find anything on the OpenJPA or IBM WAS website(s) about
> how/if/when IBM decides to package OpenJPA improvements into future feature
> packs. Does anyone know if a future WAS7 feature pack will include OpenJPA
> 2.1.x? Along those same lines, is WAS8's JPA implementation based on
> OpenJPA 2.1.x?

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