Re: [equinox-dev] LinkageError when using after returning aspect in Aspe

[Dirk Jacobs <dirk.jacobs@xxxxxxxxxx>]

Hi,

Tx for helping me out.

The included code is a variation of the demo of Heiko so you should add 
the target that's part of the demo.
The aspect is now written in .java/Annotation format
If you comment the line : initializable.initialize(); in TestAspect.java 
, you will see that everything works.
Otherwise you get the error :

Caused by: java.lang.LinkageError: loader constraint violation: loader 
(instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) 
previously initiated loading for a different type with name 
"org/eclipse/equinox/weaving/demo/hello/internal/Initializable"
  at 
org.eclipse.equinox.weaving.hello.aspects.TestAspect.anotherConstruct(TestAspect.java:16) 

  at 
org.eclipse.equinox.weaving.demo.hello.internal.Activator.start(Activator.java:21) 

  at 
org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:1009) 

  at java.security.AccessController.doPrivileged(Native Method)
  at 
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:1003) 

  ... 14 more

Thanks again,


Dirk


Martin Lippert wrote:
> Hi Dirk!
>
> Do you have a small ready-to-use project that you can send me as zip? 
> To me it looks like I should take a closer look into what happens here.
>
> Thanks!
> -Martin
>
>
>
> Dirk Jacobs wrote:
> > I created an aspect bundle (a variation of the demo)
> >
> > I want to have an initialize method called after a constructor has 
> > finished.
> >
> > The aspect is triggered, but when I want to execute the initialize 
> > method, I got a linkage error.
> > All classes are public and the package is exported.
> >
> > The aspect is as follows :
> > package org.eclipse.equinox.weaving.hello.aspects;
> > import org.aspectj.lang.annotation.AfterReturning;
> > import org.eclipse.equinox.weaving.demo.hello.internal.Initializable;
> >
> > public aspect HelloAspect3 {           after() 
> > returning(Initializable initializable) : 
> > call(org.eclipse.equinox.weaving.demo.hello.internal.Initializable+.new(..)) 
> > {
> >        if( initializable != null) {
> >            System.out.println("After Initializable Constructor");
> >            initializable.initialize();
> >        } else {
> >            System.out.println("After Non-Initializable Constructor");
> >        }
> >    }
> > }
> >
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