Different advice for different interfaces

[skaffman]

Folks,

I have a proxy target object which implements several different interfaces. I'd like the proxy to have different Advice for each of these interfaces.

However, I can't find an appropriate Advisor in the API. This doesn't seem like a particularly exotic thing to want to do, which suggests I'm looking for the wrong thing, but a subtype of PointcutAdvisor would seem like the right place to look.

Can anyone advise (bdump-tish!) me on this?

[Marten Deinum]

Assuming you have Spring 2.0 with the aop style config that is a breeze.

<aop:config>
  <aop:pointcut id="interface1" expression="exectution (* YourInterface1.*(..))" />
  <aop:pointcut id="interface2" expression="exectution (* YourInterface2.*(..))" />
  <aop:advisor pointcut-ref="interface1" advice-ref="interface1-advice"/>
  <aop:advisor pointcut-ref="interface2" advice-ref="interface2-advice"/>
</aop:config>

Classes implementing 1 of the 2 interfaces will have 1 advice added, classes implementing both interfaces will have both advices added. The same should be possible with old-style configuration but probably more verbose...

[skaffman]

Thanks Marten. I shouldn't mentioned that I needed to this programmatically rather than with XML config, but I think I can cobble something together now.