[ http://jira.jboss.com/jira/browse/JBJCA-5?page=history ]
Adrian Brock updated JBJCA-5:
-----------------------------
Fix Version: JBossAS-5.0 Beta
> Interceptors
> ------------
>
> Key: JBJCA-5
> URL: http://jira.jboss.com/jira/browse/JBJCA-5
> Project: JBoss JCA
> Type: Task
> Reporter: Adrian Brock
> Priority: Minor
> Fix For: JBossAS-5.0 Beta
>
>
> Forums discussion thread:
> http://www.jboss.org/index.html?module=bb&op=viewtopic&t=48683
> This is really a major rewrite of the JCA implementation to be less monolithic
> so this will need some careful design and consideration and
> breaking up into more fine grained tasks.
> The idea is to provide containers/interceptors for the components within the
> JCA module
> such that these components can be more easily customised and developed
> according to
> the needs of each user.
> There are three main interceptor stacks that I can think of:
> 1) ConnectionManager (connection allocation)
> This provides an interceptor stack behind the ConnectionFactory/DataSource
> proxy
> to process the allocateConnection invocation.
> It will look something like:
> ConnectionFactory proxy -> ConnectionManager interceptor -> Pooling
> interceptor
> 2) ManagedConnection/ConnectionEventListener (connection management)
> This stack provides most of the features that are currently performed by the
> BaseManagerConnection2$ConnectionListener and their supporting methods,
> but as an interceptor stack.
> As now they will largely be driven by the events from the resource adapter,
> and it this object that is actually pooled.
> 3) Resource Adaptors
> The JDBC and JMS adaptors should be implemented as interceptor stacks
> to allow optional interceptors like statistics collection, custom behaviour
> and also to perform vendor specific processing/workarounds.
> Where AOP can be used, we could actually instrument the vendor classes so
> we can also expose vendor specific methods, not just the JDBC interfaces.
> This would remove the requirement to do things like getUnderlyingConection()
> by user code.
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