[jboss-dev] Deployment chains

[Brian Stansberry]

Adrian Brock wrote:

> 4) WEB CLUSTERING
> 
> org.jboss.web.tomcat.service.deployers.ClusteringDependencyDeployer
> I don't know what this is doing in Describe since it is not
> establing a deployment dependency. Instead it is modifying the
> JBossWebMetaData.
> I'd guess this should be after the merge of annotations into that
> metadata? Although I don't think there is such an annotation
> currently? :-)
> 

No, there's not, and I'm not sure what someone would annotate as this 
metadata applies to the webapp overall. :-)

For sure Describe is wrong.  For a similar task with EJB2 beans 
(Ejb2HAPartitionDependencyDeployer) I put it in PRE_DESCRIBE, whose 
javadoc documents it as "The pre describe stage - where default 
dependencies metadata can be created". For EJB3 it's in PRE_REAL, which 
I didn't like, but the annotation merging wasn't done until 
POST_CLASSLOADER. Seems like PRE_DESCRIBE is more appropriate for the 
webapp case.

-- 
Brian Stansberry
Lead, AS Clustering
JBoss, a division of Red Hat
brian.stansberry at redhat.com