Re: using ikvm within the context of a dll: java.lang.ClassCastException: Unable to cast object of type 'java.util.PropertyResourceBundle' to type 'sun.util.resources.OpenListResourceBundle'.

Hi Oliver,

I’m not entirely certain, but I think you misunderstand how .NET assembly loading works. It’s not a class loader issue. The IKVM boot class loader knows about all IKVM.OpenJDK.* assemblies.

I did file an OpenJDK bug for this, because it is not a supported scenario (neither for OpenJDK, nor for IKVM). In OpenJDK 9 the class library will be modularized and things will hopefully get a little better.

Regards,
Jeroen

From: Oliver Egger [mailto:[email protected]]
Sent: Friday, April 29, 2016 18:35
To: Jeroen Frijters <[email protected]>; [email protected]
Cc: ehc-implementors <[email protected]>
Subject: Re: [Ikvm-developers] using ikvm within the context of a dll: java.lang.ClassCastException: Unable to cast object of type 'java.util.PropertyResourceBundle' to type 'sun.util.resources.OpenListResourceBundle'.

Hi Jeroen

Thanks for your quick answer.

Is this a classpath loader issue that the classes are not visible from the dependent dll's?
Is the bug already raised in OpenJDK and might it be that it get resolved in a future release?

Best regards
Oliver

On 29 April 2016 at 15:55, Jeroen Frijters <[email protected]<mailto:[email protected]>> wrote:
Hi Oliver,

No, all IKVM.OpenJDK.*.dll assemblies must be in the application’s bin directory.

The exception is caused by a bug in OpenJDK that is triggered when it can’t load a required class.

Regards,
Jeroen

From: Oliver Egger [mailto:[email protected]<mailto:[email protected]>]
Sent: Friday, April 29, 2016 15:23
To: [email protected]<mailto:[email protected]>
Subject: [Ikvm-developers] using ikvm within the context of a dll: java.lang.ClassCastException: Unable to cast object of type 'java.util.PropertyResourceBundle' to type 'sun.util.resources.OpenListResourceBundle'.

hi

first thanks for that cool product, we are using it with ehealthconnector project to provide a .net api, see https://sourceforge.net/projects/ehealthconnector/

but I have a slight problem ...

- i have a jar (ehc.jar) converted to a dll with ikvmc (ehc.dll)

- when i use the dll within a visual studio .net project and create an executable (ehcdemo.exe) with references to ehc.dll and IKVM.OpenJDK.*.dll the program runs through
      ehcdemo.exe
           |---------ehc.dll
           |---------IKVM.OpenJDK.*.dll

- when i try to create a dll instead of the ehcdemo.exe and use that dll (ehcdemo.dll) in my app.exe program i get a java.lang.ClassCastException: Unable to cast object of type 'java.util.PropertyResourceBundle' to  type 'sun.util.resources.OpenListResourceBundle'.

      app.exe
           |---------ehcdemo.dll
                           |---------ehc.dll
                           |---------IKVM.OpenJDK.*.dll

I can fix above exception if i add all IKVM.OpenJDK.*.dll references directly to my app

      app.exe
         |---------IKVM.OpenJDK.*.dll
         |---------ehcdemo.dll
                           |---------ehc.dll
                           |---------IKVM.OpenJDK.*.dll

however I would like that app.exe has no references directly to the IKVM.OpenJDK.*.dll.

Is that possible? If you would have any pointers where to start looking for a solution I would appreciate it very much! I'm not that much a .NET Person so please excuse me if my question is out of topic for ikvm.

Best regards
Oliver

--
oliver egger

mobile: +41765795005
email: [email protected]<mailto:[email protected]>
twitter: @oliveregger<https://twitter.com/oliveregger>
http://www.ahdis.ch/

ahdis gmbh
agile health data information systems
bertastrasse 4
8003 zürich
switzerland



--
oliver egger

mobile: +41765795005
email: [email protected]<mailto:[email protected]>
twitter: @oliveregger<https://twitter.com/oliveregger>
http://www.ahdis.ch/

ahdis gmbh
agile health data information systems
bertastrasse 4
8003 zürich
switzerland



--
oliver egger

mobile: +41765795005
email: [email protected]<mailto:[email protected]>
twitter: @oliveregger<https://twitter.com/oliveregger>
http://www.ahdis.ch/

ahdis gmbh
agile health data information systems
bertastrasse 4
8003 zürich
switzerland

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