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From "Pinaki Poddar" <ppod...@bea.com>
Subject RE: Extension to OpenJPA for distributed databases
Date Wed, 06 Feb 2008 21:03:47 GMT
1. The XA transaction manager is pluggable and not active by default.  
2. The DistributedStoreManager in RESOURCE_LOCAL txn serailly commits
across all slices. This is the default behavior (same as Hibernate
Shards).

> I see that you changed some stuff outside of the new openjpa-slice
module. 
Yes. modified root pom.xml to add openjpa-slice as a module.
I have added one chapter in the doc (ref_guide_slice.xml).

In codebase, one and only critical change was made six weeks ago to
allow JDBCStoreManger to use a configuration separate from that of its
context.

 

 


-----Original Message-----
From: Patrick Linskey [mailto:plinskey@gmail.com] 
Sent: Wednesday, February 06, 2008 2:33 PM
To: dev@openjpa.apache.org
Subject: Re: Extension to OpenJPA for distributed databases

Hi,

I see that you've gone a head and done the commit for this. Some
questions:

1. At one point, Slice had a mock XA transaction manager in it. Has this
been removed? I strongly feel that OpenJPA should not be in the business
of XA transaction management.

2. I see that you changed some stuff outside of the new openjpa-slice
module. Do these changes mean that slice is now part of 1.1.0? I think
that we might want to spend more time reviewing and discussing before
including this in a shipping product. One way to address this could be
by creating a branch; another could be by leaving it in trunk but not
changing the build.

-Patrick

On Feb 6, 2008 9:10 AM, Pinaki Poddar <ppoddar@bea.com> wrote:
> Hi,
>   Some of you have reviewed this extension. Based on your responses, I

> have integrated openjpa-slice module with OpenJPA in my local 
> environment.
> I am planning to commit the same to the repository by end of today.
>
>   Regards --
>
>
> -----Original Message-----
> From: Pinaki Poddar
> Sent: Wednesday, January 30, 2008 5:45 PM
> To: 'dev@openjpa.apache.org'
> Subject: Extension to OpenJPA for distributed databases
>
> Hi,
>   I would like to add an extension of OpenJPA that allows an 
> application to transact against a set of distributed, possibly 
> hetereogenous, horizontally-partitioned databases [2]. The project is 
> named as Slice and is similar in scope to Hibernate Shards.
>   The development codebase so far been maintained in Apache Lab 
> repository and given its current state I propose to add the codebase 
> to a new openajpa-slice module.
>
>   I request you to review current state of its implementaion [1] and 
> express your opinion/views on feasibility of my proposal.
>
>   Regards --
>
> Pinaki
>
> [1] Slice website:
> http://people.apache.org/~ppoddar/slice/site/index.html
>
> [2] dev2dev blog:
> http://dev2dev.bea.com/blog/pinaki.poddar/archive/2008/01/slice_openjp
> a_
> f_1.html
>
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--
Patrick Linskey
202 669 5907

Notice:  This email message, together with any attachments, may contain information  of  BEA
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