Help with defining pointcut for method execution on interface hierarchy
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Help with defining pointcut for method execution on interface hierarchy
by Johan Haleby
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Hi,
I'd like to get some help to define a pointcut. I have an empty marker interface (A) from which several other interfaces extends e.g. public interface B extends A { void myMethodInB(); } Then I have an implementation of B (BImpl) which also extends other interfaces that doesn't extend from A such as X, Y, and Z, e.g.
public class BImpl implements B, X, Y, Z { I want to define a pointcut that only intercepts methods declared in a subinterface of A. So for example the only method that should be intercepted in BImpl is the myMethodInB method since B extends A. The other methods such as myMethodInX should not be intercepted. Does anyone know how a pointcut like this would look like?public void myMethodInB() { .... } public void myMethodInX() { .... } ... } Thanks /Johan _______________________________________________ aspectj-users mailing list aspectj-users@... https://dev.eclipse.org/mailman/listinfo/aspectj-users |
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Re: Help with defining pointcut for method execution on interface hierarchy
by Andy Clement
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I'm afraid I can't come up with a pointcut for that. Best I could do
is something like: aspect X { public static boolean check(JoinPoint.StaticPart jpsp) { Object o = ((MethodSignature)jpsp.getSignature()).getDeclaringType(); boolean b = // work out what you want... return b; } before(): execution(* A+.*(..)) && if(check(thisJoinPointStaticPart)) { System.out.println(thisJoinPoint); } } where you do your extra analysis in the check() method. But this is not a purely static match of course. Andy 2009/9/10 Johan Haleby <johan.haleby@...>: > Hi, > > I'd like to get some help to define a pointcut. I have an empty marker > interface (A) from which several other interfaces extends e.g. > > public interface B extends A { > void myMethodInB(); > } > > Then I have an implementation of B (BImpl) which also extends other > interfaces that doesn't extend from A such as X, Y, and Z, e.g. > > public class BImpl implements B, X, Y, Z { > public void myMethodInB() { > .... > } > > public void myMethodInX() { > .... > } > ... > } > > I want to define a pointcut that only intercepts methods declared in a > subinterface of A. So for example the only method that should be intercepted > in BImpl is the myMethodInB method since B extends A. The other methods such > as myMethodInX should not be intercepted. Does anyone know how a pointcut > like this would look like? > > Thanks > /Johan > > > > _______________________________________________ > aspectj-users mailing list > aspectj-users@... > https://dev.eclipse.org/mailman/listinfo/aspectj-users > > aspectj-users mailing list aspectj-users@... https://dev.eclipse.org/mailman/listinfo/aspectj-users |
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Re: Help with defining pointcut for method execution on interface hierarchy
by Johan Haleby
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Hi,
I solved it using a similar approach that you suggested but I was curious if you could construct it with a pointcut instead. Thanks for your answer and for a great project! /Johan
On Wed, Sep 16, 2009 at 11:25 PM, Andy Clement <andrew.clement@...> wrote: I'm afraid I can't come up with a pointcut for that. Best I could do _______________________________________________ aspectj-users mailing list aspectj-users@... https://dev.eclipse.org/mailman/listinfo/aspectj-users |
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Re: Help with defining pointcut for method execution on interface hierarchy
by Víctor Llorens Vilella
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I'm quite new in Aspects, but I had to build an aspect for a similar isue.
execution(public A.*(..) ) worked for me. Methods are in B, but in fact their main interface is A. What do you all think? 2009/9/17 Johan Haleby <johan.haleby@...> Hi, -- Victor Llorens Vilella _______________________________________________ aspectj-users mailing list aspectj-users@... https://dev.eclipse.org/mailman/listinfo/aspectj-users |
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Re: Help with defining pointcut for method execution on interface hierarchy
by Andy Clement
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Hi Victor,
I think the difference in Johans case is that A does not define the method, it is just a marker interface, and the sub-interfaces actually define the methods. If A defined the method, then your pointcut would work. Andy 2009/9/17 Víctor Llorens Vilella <victor.llorens@...>: > I'm quite new in Aspects, but I had to build an aspect for a similar isue. > > execution(public A.*(..) ) worked for me. > > Methods are in B, but in fact their main interface is A. > What do you all think? > > 2009/9/17 Johan Haleby <johan.haleby@...> >> >> Hi, >> >> I solved it using a similar approach that you suggested but I was curious >> if you could construct it with a pointcut instead. Thanks for your answer >> and for a great project! >> >> /Johan >> >> On Wed, Sep 16, 2009 at 11:25 PM, Andy Clement <andrew.clement@...> >> wrote: >>> >>> I'm afraid I can't come up with a pointcut for that. Best I could do >>> is something like: >>> >>> aspect X { >>> public static boolean check(JoinPoint.StaticPart jpsp) { >>> Object o = >>> ((MethodSignature)jpsp.getSignature()).getDeclaringType(); >>> boolean b = // work out what you want... >>> return b; >>> } >>> before(): execution(* A+.*(..)) && >>> if(check(thisJoinPointStaticPart)) { >>> System.out.println(thisJoinPoint); >>> } >>> >>> } >>> >>> where you do your extra analysis in the check() method. But this is >>> not a purely static match of course. >>> >>> Andy >>> >>> 2009/9/10 Johan Haleby <johan.haleby@...>: >>> > Hi, >>> > >>> > I'd like to get some help to define a pointcut. I have an empty marker >>> > interface (A) from which several other interfaces extends e.g. >>> > >>> > public interface B extends A { >>> > void myMethodInB(); >>> > } >>> > >>> > Then I have an implementation of B (BImpl) which also extends other >>> > interfaces that doesn't extend from A such as X, Y, and Z, e.g. >>> > >>> > public class BImpl implements B, X, Y, Z { >>> > public void myMethodInB() { >>> > .... >>> > } >>> > >>> > public void myMethodInX() { >>> > .... >>> > } >>> > ... >>> > } >>> > >>> > I want to define a pointcut that only intercepts methods declared in a >>> > subinterface of A. So for example the only method that should be >>> > intercepted >>> > in BImpl is the myMethodInB method since B extends A. The other methods >>> > such >>> > as myMethodInX should not be intercepted. Does anyone know how a >>> > pointcut >>> > like this would look like? >>> > >>> > Thanks >>> > /Johan >>> > >>> > >>> > >>> > _______________________________________________ >>> > aspectj-users mailing list >>> > aspectj-users@... >>> > https://dev.eclipse.org/mailman/listinfo/aspectj-users >>> > >>> > >>> _______________________________________________ >>> aspectj-users mailing list >>> aspectj-users@... >>> https://dev.eclipse.org/mailman/listinfo/aspectj-users >> >> >> _______________________________________________ >> aspectj-users mailing list >> aspectj-users@... >> https://dev.eclipse.org/mailman/listinfo/aspectj-users >> > > > > -- > Victor Llorens Vilella > > > _______________________________________________ > aspectj-users mailing list > aspectj-users@... > https://dev.eclipse.org/mailman/listinfo/aspectj-users > > aspectj-users mailing list aspectj-users@... https://dev.eclipse.org/mailman/listinfo/aspectj-users |
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