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Posted to dev@geronimo.apache.org by David Blevins <da...@gmail.com> on 2011/05/03 01:55:52 UTC

Re: openejb-jar-2.2.xsd out-of-date?

On Apr 14, 2011, at 1:25 AM, han hongfang wrote:

> Hi devs,
> 
> I got following errors when I tried to generate the jaxbmodel class for openejb-jar-2.2.xsd using maven-jaxb-plugin:1.1.1. Taking entity-manager-factory-ref for instance, it can not be found in geronimo-naming-1.2.xsd. 

This old email has some related info:

  http://markmail.org/message/w76ndrfv27v53mbk

There already are JAXB objects for old/new descriptors and as a result the schema is rarely updated.  I think for a while we didn't even have one.

There's a bit of legacy here in the for a short bit (Geronimo 1.0/OpenEJB 2.0) OpenEJB was not really a separate project in any technical sense.  The OpenEJB 3.x codebase returned to being more standalone.  The reason to keep the v2 openejb-jar.xml format was it was made 100% for Geronimo -- it has all the Geronimo dependency and config stuff in it amongst other things.

Anyway, here are the root JAXB objects for the related trees:

openejb-jar v2:  http://svn.apache.org/repos/asf/openejb/trunk/openejb3/container/openejb-jee/src/main/java/org/apache/openejb/jee/oejb2/OpenejbJarType.java
geronimo-ejb:
http://svn.apache.org/repos/asf/openejb/trunk/openejb3/container/openejb-jee/src/main/java/org/apache/openejb/jee/oejb2/GeronimoEjbJarType.java

Here's the newer non-geronimo-specific openejb tree:
http://svn.apache.org/repos/asf/openejb/trunk/openejb3/container/openejb-jee/src/main/java/org/apache/openejb/jee/oejb3/

In terms of what we should do now with a new major Geronimo version, I suspect it will largely depend on David J's work.  Seems like there'll be a very big and very not backwards-compatible change with regards to parents/childern and dependency information.  Not sure what our plans are with regards to backwards compatibility of existing descriptors.

-David

Geronimo 3.0 and descriptors (was: Re: openejb-jar-2.2.xsd out-of-date?)

Posted by David Blevins <da...@gmail.com>.

Soo.... The discussion on the openejb-jar.xml confusion has brought up some relevant topics (see the previous email for backstory). Such as we probably need to decide what we might want to do with our descriptors going forward.

At least in terms of David Jencks' branch changes, gbeans and are dead and there's no more dependency information in the descriptors anymore. David can probably fill in some details as well as maybe comment on the likely hood of us releasing a 3.0 final with that code, but...

Certainly in terms of the EJB related descriptors we already have a ton of legacy and it looks like we're getting more. Specifically:

1. osgi/gbean changes (the branch changes). No more dependency information. Not sure the impact on naming and gbean specific queries.

2. "clustering" elements. No one to my knowledge has ever used or even tried to use the WADI clustering stuff. Do we want to keep carrying it forward?

3. CMP data. CMP is dead and we could probably get along fine just making the 1, 2 or 0 users out there use the jpa mapping file directly.

4. The 'openejb-jar' element of the new geronimo-openejb.xml file. From a Geronimo perspective, the only thing useful in it that is not already in the geronimo-openejb.xml jar file is the ability to specify which container you want your bean deployed in -- assuming you don't want the default. That's a rare case, but certainly would be easy to add to the geronimo-openejb.xml file.

If we're going to change all the geronimo descriptors incompatibly, then maybe we want to kill the openejb-jar.xml file in the process, switch everyone over to a new-new geronimo-openejb-3.0.xsd (not yet written) and make the related JAXB in Geronimo land.

If we aren't changing things incompatibly, then maybe we just leave things alone and try to make tiny changes where needed.

Any thoughts?

-David