Re: [aspectwerkz-user] Aspect.aspectOf() behaviour

The perclause precisely controls this behavior
For more lazy behavior you can use a singleton aspect and a object
keyed map that delegates to another aspect.

That said you can also try the "perInstance" type - I can't remember
if we have deprecated it or not in AW 2.0. It basically does this
plumbing for you.
Alex

On 10/17/05, AVERY, Neil, FM <[email protected]> wrote:
>
> All,
> If I apply a 'perTarget' Aspect to a object and call
> Aspects.aspectOf(SimpleAroundAspect.class, testClass) then I get an
> exception, NoAspectBound...(see below)
>
> However, if a prior invocation has occured then Aspects.aspectOf(..) will
> return the Aspect that was bound....
>
> Ideally I would like to get access to an aspect bound to the object instance
> regardless of whether or not it has been invoked. Is it possible to
> determine/control the behaviour as its the kind of thing that will affect
> component lifecycle when interacting with aspects...?
>
> Cheers Neil.
>
> TEST:
>  public void testDifferendAspectInstanceGetsApplied()
> throws Exception {
>
>   TestClass testClass = new TestClass();
> >>>//  testClass.doStuff();
>
>   Object aspect1 = Aspects.aspectOf(SimpleAroundAspect.class, testClass);
>  }
> }
> THROWS:
> org.aspectj.lang.NoAspectBoundException: Exception while
> initializing org.stuff.SimpleAroundAspect:
> java.lang.reflect.InvocationTargetException
>  at org.aspectj.lang.Aspects.aspectOf(Aspects.java:66)
>  at
> org.stuff.aspectof.SimpleAspectTest.testDifferendAspectInstanceGetsApplied(SimpleAspectTest.java:27)
>  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
>  at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>  at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>  at java.lang.reflect.Method.invoke(Method.java:585)
>  at junit.framework.TestCase.runTest(TestCase.java:154)
>  at junit.framework.TestCase.runBare(TestCase.java:127)
>  at
> junit.framework.TestResult$1.protect(TestResult.java:106)
>  at
> junit.framework.TestResult.runProtected(TestResult.java:124)
>  at junit.framework.TestResult.run(TestResult.java:109)
>  at junit.framework.TestCase.run(TestCase.java:118)
>  at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
>  at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
>  at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
> Caused by: java.lang.reflect.InvocationTargetException
>  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
>  at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>  at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>  at java.lang.reflect.Method.invoke(Method.java:585)
>  at org.aspectj.lang.Aspects.aspectOf(Aspects.java:63)
>  ... 14 more
> Caused by: org.aspectj.lang.NoAspectBoundException
>  at
> org.stuff.SimpleAroundAspect.aspectOf(SimpleAroundAspect.java:1)
>  ... 19 more
>
> ASPECT:
> package org.stuff;
>
> import org.aspectj.lang.ProceedingJoinPoint;
> import org.aspectj.lang.annotation.*;
>
> @Aspect("pertarget(call(* org.stuff.TestClass.*(..)))")
> public class SimpleAroundAspect {
>  public static int callCount = 0;
>
>   @Around("call(* org.stuff.TestClass.*(..))")
>   public Object invoke(ProceedingJoinPoint thisJoinPoint) throws Throwable {
>
>    System.err.println("called onto SimpleAroundAspect count:" +
> callCount++);
>    return thisJoinPoint.proceed();
>   };
> }
>
>
>
>
>
>
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