[jboss-dev] split metadata

[Alexey Loubyansky]

I have committed the split metadata now. The details are below. I'd like 
to get feedback from the projects that use it.

I couldn't execute mvn deploy. It would fail with e.g.
[INFO] Error retrieving previous build number for artifact 
'org.jboss.metadata:metadata-common:jar': repository metadata for: 
'snapshot org.jboss.meta
data:metadata-common:2.0.0-SNAPSHOT' could not be retrieved from 
repository: snapshots.jboss.org due to an error: Authorization failed: 
Not authorized

So, if you want to build e.g. EJB metadata you have to check out ejb and 
common projects, build and install common and then build ejb.


New metadata structure
----------------------

Metadata project (version 1.0.X) has been split into several: common 
project + one project per specific technology. The initial version for 
all the new projects is 2.0.0-SNAPSHOT. The current list of the projects is:
- common
- EJB
- WEB
- RAR
- EAR
- client

The common one contains stuff which is used by other projects, plus 
common Java EE metadata, common JBoss metadata and WS metadata. These 
could further be extracted to their own projects if needed.
All technology-specific projects declare dependency on the common project.


SVN repository
--------------

The main location is 
https://svn.jboss.org/repos/jbossas/projects/metadata/. Under which each 
project's trunk is located under project_name/trunk, e.g. common/trunk, 
ejb/trunk, etc.


Maven
-----

groupId remains the same, i.e. org.jboss.metadata.
artifactId is metadata-project_name, e.g. metadata-common, metadata-ejb, 
etc.


Things that were removed
------------------------

Packages org.jboss.ejb3.metamodel and org.jboss.metamodel.descriptor 
weren't copied. I am not sure if they are used now.
The same for org.jboss.metadata.test.ejb3 and 
org.jboss.metadata.test.generator.

JAWS DTDs weren't copied neither (they shouldn't have been there from 
the beginning).