[jboss-jira] [JBoss JIRA] Created: (JBAS-4049) Consider removing Subject mixin from FIELD granularity session Pojos

[Brian Stansberry (JIRA)]

Consider removing Subject mixin from FIELD granularity session Pojos
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                 Key: JBAS-4049
                 URL: http://jira.jboss.com/jira/browse/JBAS-4049
             Project: JBoss Application Server
          Issue Type: Task
      Security Level: Public (Everyone can see)
            Reporter: Brian Stansberry
         Assigned To: Brian Stansberry
             Fix For: JBossAS-5.0.0.Beta2, JBossAS-4.2.0.CR1


FIELD granularity replication uses a Subject mixin to the pojo to notify the session when an attribute is changed.

Consider dropping this in place of having the CacheListener detect the cache change and notify the session (via the JBossCacheManager).

Pro:
1) Simpler instrumentation. Classes instrumented a la the PojoCache examples (which don't add the Subject mixin) will work. The PojoCache examples can be the sole reference point for how to instrument classes.
2) For sure detects all changes in the pojo.  Not sure if the Subject thing catches changes to collections of non-pojos.

Con:
Perhaps a bit slower, as the mechanism to look up and notify the session is more cumbersome.


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