Hi Andy,
thanks a lot for your answer. I like the annotation based approach. This would
allow me, not having to deal with the mangled names.
Is there any chance, that AjType gets enhanced to directly provide the stuff i
would need?
best regards,
Thomas
On May 18, 2010, at 1:40 AM, Andy Clement wrote:
> Hi Thomas,
>
> I actually thought the AjTypeSystem would allow this. But having just
> tried it, I see that it doesn't !
>
> The name is stable. (it is computed by AspectJs
> org.aspectj.weaver.NameMangler.interMethod() which is contained in the
> weaver jar). So you could create it yourself or simply look for the
> method name that starts with 'ajc$' and ends with '$getName'.
>
> However, there is also an annotation added to these mangled members,
> which captures the declared name. Here is some code that shows how to
> access it:
>
> public class Person {
> private String name;
>
> public static void main(String[] args) {
> Method[] ms = Person.class.getDeclaredMethods();
> for (int i=0;i<ms.length;i++) {
> ajcITD ajcITD =
> ms[i].getAnnotation(org.aspectj.internal.lang.annotation.ajcITD.class);
> if (ajcITD!=null) {
> System.out.println("method = "+ms[i].getName()+" has real
> name="+ajcITD.name());
> }
> }
> }
> }
>
> privileged aspect Person_ITD {
> public String Person.getName() {
> return name;
> }
> }
>
>
> For the mangled method, that prints:
>
> method = getName has ajcitd=getName
>
>
> cheers,
> Andy
>
> On 17 May 2010 15:26, Thomas Wieger <[email protected]> wrote:
>>
>> Hello!
>>
>> I'm just wondering, how i could invoke a private method introduced by an
>> inter-type declaration via java reflection (method#invoke(...)) using the
>> aspectj runtime infrastructure, possibly the AjTypeSystem.
>>
>> What i want to do is something like this. Suppose i have a class Person,
>> which looks like this:
>>
>> class Person {
>> private String name;
>> }
>>
>> now i declare an inter-type:
>>
>> privileged aspect Person_IDT {
>> private String Person.getName() {
>> return name;
>> }
>> }
>>
>> now i would like to do something like this:
>>
>> Method readMethod = Person.class.getDeclaredMethod("getName");
>> readMethod.setAccessible(true);
>> readMethod.invoke(aTarget);
>>
>> Actually i know, that i won't find the method in this way, because AspectJ
>> mangles the name to something beginning with "ajc$interMethodDispatch2$".
>> But my hope was, that somewhere in the aspectj runtime, there would be some
>> way to achieve something like previously described. Unfortunately i haven't
>> found a way.
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