Re: [aspectwerkz-user] Intercepting parameters with run-time aspect deployment.

sounds to me that your deployment scope is within(MyClass) and then your hot
deployed advice is boud to pointcut call(MyClass.something). The deployment
scope must be a superset of the pointcut where you deploy later so that does
not seem good.
That said you are using in the sample MyClass.main to call MyClass.X to call
Y so this should work (though a bit confusing)

I see that in the build time test you are using execution pointcut so this
is not consistent.

Alex


On 3/8/07, Udo Fritzke Jr. <[email protected]> wrote:
>
> Hi,
>
> We are trying to intercept the actual parameters and return values
> of a class method call, defining "args" pointcuts. It works fine
> when the weaving is done statically with a build file. However, it
> does not work when we dynamically deploy an aspect. The application
> compiles and runs, but the advice does take effect at all.
>
> Does someone could explain if there is some guideline or implementation
> detail we are missing?
>
> A sample code follows.
>
> Thanks in advance,
> Udo.
>
> ******************************
> aop.xml
> ******************************
> <aspectwerkz>
>
> <system id="AW.MyAspect">
> <package name="AW">
> <aspect class="MyAspect">
>
> <deployment-scope name="response_time">
>       within(AW.MyClass)
> </deployment-scope>
>
> <!-- used only for static weaving
>
>     <pointcut name="pc1" expression="execution(* AW.MyClass.Y(..))"/>
>     <advice name="advice1(int ret, int arg)" type="after returning(ret)"
> bind-to="pc1 AND args(arg)"/>
> -->
>
> </aspect>
> </package>
> </system>
> </aspectwerkz>
>
> ******************************
> MyAspect.class
> ******************************
> package AW;
>
> public class MyAspect
> {
>   public void advice1(int ret, int arg)
>   {
>           //ret eh o retorno do metodo Y
>           System.out.println("Aspect: "+ret);
>
>           // arg eh o argumento passado em Y
>           System.out.println("Aspect: "+arg);
>
>   }
> }
>
> ******************************
> MyClass.class
> ******************************
> package AW;
>
> public class MyClass
> {
>   public void X()
>   {
>           int arg = 4;
>           int ret = Y(arg);
>           System.out.println("Aplicacao"+ret);
>   }
>
>   public int Y(int arg)
>   {
>           System.out.println("Aplicacao"+arg);
>           return 2;
>   }
>
>
>   public static void main(String Argumentos[])
>   {
>           MyClass obj = new MyClass();
>
>            String xmlDef = "<aspect class='MyAspect'> " +
>                            "<pointcut name='pc1' expression='call(*
> AW.MyClass.Y(..))'/>" +
>                           "<advice name='advice1(int ret, int arg)'
> type='after
> returning(ret)' " +
>                           " bind-to='pc1 AND args(arg)'/> " +
>                           "</aspect>";
>           Deployer.deploy(MyAspect.class, xmlDef);
>           obj.X();
>   }
> }
>
>
>
>
>
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