2008/12/14 NewWay <[email protected]>
>
> Is it also possible to know who is the calling method?
>
yes. switch from using "execution() && this()" to "call() && target()". In
fact that is another way to get the Page instance:
@Before("call(@WorkflowAction * *(..))) && target(f) && this(p)")
public void goo(Page p, Page.Form f) {
// Calling method available through thisEnclosingJoinPointStaticPart
}
Andy.
>
> Andy Clement wrote:
> >
> > I would not use @annotation, I would match statically on your methods:
> >
> > @Before("execution(@WorkflowAction * *(..)))")
> >
> > Passing the form instance is straightforward:
> >
> > @Before("execution(@WorkflowAction * *(..))) && this(f)")
> > public void goo(Page.Form formInstance) {}
> >
> > Accessing the outer instance of Page is not so eay. Here are the
> > options:
> >
> > 1) define a getter in Form and call it from the advice
> >
> > public void getPage() {
> > return Page.this;
> > }
> >
> > 2) Write a more complex pointcut that uses a wormhole pattern to pass the
> > enclosing instance through to the advice:
> >
> > @Before("execution(@WorkflowAction * *(..)) && cflow(this(p))")
> > public void foo(Page p) { }
> >
> >
> > 3) use an AspectJ code style intertype declaration to add that getter
> from
> > option (1):
> >
> > public Page Page.Form.getPage() {
> > return Page.this;
> > }
> > (this could possibly be done in annotation style @DeclareParents, but
> just
> > the thought of the messiness of that declaration puts me off trying it)
> >
> > 4) Rely on how the compiler implements inner classes:
> >
> > public void goo(Page.Form formInstance) {}
> > Field f = Page.Form.class.getDeclaredField("this$0");
> > f.setAccessible(true);
> > System.out.println("Page is " + formInstance.get(p));
> > }
> >
> > Andy
> >
> >
> > 2008/12/12 miro <[email protected]>
> >
> >>
> >> I want to take control through my aspect for any method which is
> >> annotated
> >> with @WorkflowAction.
> >> here is my example
> >>
> >> public class Page(){
> >> Page(){
> >> add(new Form());
> >> }
> >>
> >> // inner class
> >> public Class Form {
> >> @WorkflowAction()
> >> void somemethod()
> >> }
> >>
> >> }
> >> My aspect comes in picture when the somemethod() is called and I am
> >> wondering is there a way I can pass instance of page to my aspect ?
> >>
> >> here is my aspect
> >>
> >> @Before("@annotation(gov.hhs.acf.aop.aspects.WorkflowAction)")
> >> public void transferWorkflowContext(JoinPoint joinPoint){
> >> //here I want to access the page instance
> >> }
> >>
> >>
> >>
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/passing-instance-of-parent-class-to-aspect-tp20976785p20976785.html
> >> Sent from the AspectJ - users mailing list archive at Nabble.com.
> >>
> >> _______________________________________________
> >> aspectj-users mailing list
> >> [email protected]
> >> https://dev.eclipse.org/mailman/listinfo/aspectj-users
> >>
> >
> > _______________________________________________
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> > [email protected]
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> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/passing-instance-of-parent-class-to-aspect-tp20976785p21000732.html
> Sent from the AspectJ - users mailing list archive at Nabble.com.
>
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