[jboss-dev-forums] [Design of JBossCache] - Re: CacheListener callbacks for block/unblock

[manik.surtani@jboss.com]

The problem with adding block calls to the listener are that it is a specialised callback that serves little general purpose use.

The problem with a sub-interface is that it adds complexity and a performance bottleneck to the notifier (the need to test each listener if it is a subclass instance, etc).

If at all I'd prefer the 2nd approach, so we could even move viewChanged() to the 2nd interface - perhaps ReplicatedCacheListener with viewChange() and block/unblock events.

Thoughts?




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