Re: [aspectj-users] Marker Interface and Abstract Pointcut

[Adrian Colyer <adrian_colyer@xxxxxxxxxx>]

AspectJ does not allow pointcut overriding, and your concrete synchCall 
pointcut has a different signature to (overrides the) abstract synchCall 
pointcut.  If you change the definition to:

pointcut synchCall(Synch a) : target(a) && target(AbstractPublisher) && 
execution(public void addSubscriber(TransactionSubscriber))

then things should work as expected. The target(a) expression binds the 
Synch object expected by the synchCall contract, the second target 
expression adds the extra condition that we're only interested in targets 
which are AbstractPublishers. If you don't need that latter restriction, 
just drop the second target expression.

-- Adrian
Adrian_Colyer@xxxxxxxxxx



Irum Godil <softwarengineer2004@xxxxxxxxx> 
Sent by: aspectj-users-bounces@xxxxxxxxxxx
17/05/2005 17:48
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Subject
[aspectj-users] Marker Interface and Abstract Pointcut






Hi, 
I want a few of my classes to implement the same advice, so I created an 
aspect with a marker interface and an abstract pointcut as follows:
 
abstract public aspect SynchMethods {
 
          public interface Synch {} 
          abstract pointcut synchCall(Synch s);
...
}
 
Now, in a another aspect where I want to concretize the pointcut, I am 
doing:
 
declare parents: AbstractPublisher implements SynchMethods.Synch;
 
pointcut synchCall(AbstractPublisher a) : target(a) && execution(public 
void addSubscriber(TransactionSubscriber))
 
However, I keep getting the following compile error: 
 
 
can't override pointcut 
aspects.multithread.weave.SynchMethods.synchCall(aspects.multithread.weave.SynchMethods$Synch) 
with pointcut 
aspects.multithread.weave.ThreadAbstractPublisher.synchCall(org.prevayler.implementation.publishing.AbstractPublisher) 
parameter types don't match ThreadAbstractPublisher.aj 
I am not sure why I am getting this error when I have declared 
AbstractPublisher to implement the Synch interface. Any help on this will 
be greatly appreciated. 
 
Thanks.
Sincerely,
Irum Godil. 
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