Re: JAXB accesors: ClassLoader.defineClass

Hi Gerardo,

I think that JAXB is trying to load a .class file from an ikvmc compiled assembly and that doesn't really work, because the .class file generated by the IKVM runtime is a stub, not the real class.

I'm not sure how to solve this. If the code assumes that .class files can always be loaded as a resource, then it isn't really compatible with ikvmc (at least, without any manual tweaking).

Regards,
Jeroen

> -----Original Message-----
> From: Gerardo Lastra [mailto:[email protected]]
> Sent: Monday, March 24, 2014 17:38
> To: [email protected]
> Subject: [Ikvm-developers] JAXB accesors: ClassLoader.defineClass
> 
> Hi all,
> 
> I'm doing some research on the possibility of running a Java SOAP WS
> client (using Apache CXF and JAXB) on .NET through ikvmc. I've managed
> to create the .dll so far, but when I'm starting the application (when
> the JAXB content is starting), I get the following error (names
> replaced):
> 
> Mar 24, 2014 5:20:55 PM com.sun.xml.bind.v2.runtime.reflect.opt.Injector
> inject
> WARNING: duplicate class definition bug occured? Please report this :
> a/b/c/ThisIsAJaxbType$JaxbAccessorF_someField
> java.lang.NoClassDefFoundError:
> a/b/c/ThisIsAJaxbType$JaxbAccessorF_someField (type not found in my-
> assembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null)
>         at IKVM.NativeCode.java.lang.ClassLoader.defineClass1(Unknown
> Source)
>         at java.lang.ClassLoader.defineClass1(Native Method)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:814)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:656)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at
> com.sun.xml.bind.v2.runtime.reflect.opt.Injector.inject(Injector.java
> :205)
>         at
> com.sun.xml.bind.v2.runtime.reflect.opt.Injector.inject(Injector.java
> :85)
>         at
> com.sun.xml.bind.v2.runtime.reflect.opt.AccessorInjector.prepare(Acce
> ssorInjector.java:89)
>         at
> com.sun.xml.bind.v2.runtime.reflect.opt.OptimizedAccessorFactory.get(
> OptimizedAccessorFactory.java:167)
>         at
> com.sun.xml.bind.v2.runtime.reflect.Accessor$FieldReflection.optimize
> (Accessor.java:279)
>         at
> com.sun.xml.bind.v2.runtime.property.SingleElementLeafProperty.<init>
> (SingleElementLeafProperty.java:82)
>         at
> java.lang.reflect.Constructor.newInstance(Constructor.java:522)
>         at
> com.sun.xml.bind.v2.runtime.property.PropertyFactory.create(PropertyF
> actory.java:124)
>         at
> com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImp
> l.java:179)
>         at
> com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextIm
> pl.java:515)
> 
>  ... stacktrace continues.
> 
> I think the problem is either JAXB is using the wrong ClassLoader when
> defining the injected classes, or there's a problem in IKVM itself. Any
> ideas?
> 
> Thank you!
> Gerardo

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