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From Randy Watler <wat...@wispertel.net>
Subject Re: JPA_BRANCH status
Date Thu, 26 Feb 2009 18:26:12 GMT
JPA/JTA mavens:

I have committed all the resource stabilization patches/upgrades and a 
few bug fixes. Ate got Atomikos 3.5.2 upgraded in the BSR repository, so 
the JPA branches for j2 and j2-admin are ready for more testing. 
Remember to make the changes to the configuration files outlined below 
to enable JPA. I will continue to poke around with it, but any input is 

As soon as the last changes are made to the registry schema and OJB 
mappings in trunk, I will merge all pending changes into the branches. 
In case you are wondering, I am currently up to 746605 in j2 and 747450 
in j2-admin.

Other JPA related todo items I am working:

- upgrade openjpa plugin to version 1.0 released earlier this week.
- add Atomikos XA datasource factory to BSR repo and include as a portal 
- create distributed cache test for security component.
- create load testing harness for portal to verify JPA performance 
against OJB 'standard'.


Randy Watler wrote:
> Gang,
> I have finally tracked the connections problem down to a reference 
> counting bug in Atomikos 3.5.0. I have verified that this has been 
> fixed in 3.5.2, but I will have to ask David to update the BSR repo 
> with the latest version in a few days and commit then. In the interim, 
> I will fix a few other minor bugs I have identified along the way.
> Thanks for your patience.
> Randy
> Randy Watler wrote:
>> Just a quick note: some initial testing has revealed a problem with 
>> DB connections/Entity Managers not being closed or collected. This 
>> causes some issues pretty quickly during testing. I will post back 
>> when it is safe to return to the water.
>> Randy
>> Randy Watler wrote:
>>> Jetspeed on JPA is struggling to its feet. I have not tested beyond 
>>> bringing up the default page, but getting this far cleanly is reason 
>>> enough to give you all an update!
>>> - First, there is now a JPA branch for j2-admin. This was required 
>>> because of minor, but required, API changes to J2 itself. Nothing 
>>> serious, but I opted to create a branch rather than sharing a patch 
>>> file.
>>> - I have not modified all the maven plugins to support the JPA 
>>> configuration. This was more than I wanted to bite off at the moment 
>>> and it is unclear whether we'll support two configurations, (OJB and 
>>> JPA), going forward. Instead, I have added all the necessary 
>>> configurations, but left them supporting OJB mode by default. Here 
>>> is the list of changes one needs to manually complete to switch a 
>>> deployed OBJ version to use JPA:
>>> webapps/jetspeed/META-INF/context.xml:
>>>    uncomment the JPA NonXA datasource resource and JTA transactions 
>>> tags.
>>> webapps/jetspeed/WEB-INF/web.xml:
>>>    uncomment the jetspeed-xa datasource reference tags.
>>> webapps/jetspeed/WEB-INF/spring-filter.properties:
>>>    comment out the 'default,obj' default property.
>>>    uncomment the 'default,jpa' default property.
>>> Start the portal normally, and you should be in the brave new JPA 
>>> world!
>>> - I have yet to include a required JAR file for real XA support. 
>>> Will be doing that in the next few days. In the interim, only the 
>>> "fake" non-xa configuration is active. For those that are curious, 
>>> the non-xa configuration is perfectly safe for our typical 
>>> configuration of single database on a single server. A real XA 
>>> datasource is needed to include multiple databases as part of a 
>>> portal transaction that includes external database operations.
>>> Please let me know if you are interested in helping me test the JPA 
>>> configuration. I could use some help in areas outside the default 
>>> demo setup on tomcat/mysql, specifically LDAP, other containers, and 
>>> other databases.
>>> Randy
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