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Re: [aspectj-users] Issue with generics

I have to say, this was not the response I was hoping for. :) But thanks.

The bug has been filed here: https://bugs.eclipse.org/bugs/show_bug.cgi?id=298665

-Michel


Andrew Eisenberg wrote:
This does appear to be a bug with generics.  I am able to get your
program to compile by removing the type parameters on your method
declarations:

public aspect MyAspect
{
  public interface MyInterface
  {
      public boolean instanceOf(Class c);
  }

  declare parents: MyObject implements MyInterface;

  public boolean MyInterface.instanceOf(Class c)
  {
      return c.isInstance(this);
  }
}

class MyObject
{
}

class Main
{
  public static void main(String[] args)
  {
      new MyObject().instanceOf(Object.class);
  }
}

I'd suggest that you raise a bug for this in bugzilla.

On Tue, Dec 29, 2009 at 11:40 PM, Michel Parisien
<codingkriggs@xxxxxxxxx> wrote:
  
Hello,

I have a problem that I tried boiling down to as small a code sample as
possible. The following gives me the error "The method instanceOf(Class<?
extends Object>) is ambiguous for the type MyObject" on the "instanceOf"
method call in the main method:

public aspect MyAspect
{
  public interface MyInterface
  {
      public boolean instanceOf(Class<? extends Object> c);
  }

  declare parents: MyObject implements MyInterface;

  public boolean MyInterface.instanceOf(Class<? extends Object> c)
  {
      return c.isInstance(this);
  }
}

class MyObject
{
}

class Main
{
  public static void main(String[] args)
  {
      new MyObject().instanceOf(Object.class);
  }
}

First, I wonder if this fails to compile for everyone or if it is just me.
Second, since I suspect I may have a compatibility issue, here are my specs:

* Mac OS X 10.4 Tiger
* Eclipse Galileo
* Mac OS X JavaVM 1.5.0 (J2SE-1.5)
* AspectJ 1.6.6

If the problem is with the code, I'd like to know the "better" way to
accomplish the above.

I would appreciate any help you could give,

-Michel

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