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Background

I'm currently doing a benchmark of solutions to convert java code to c# We have a fast evolving java software and wan't to port some low level (not ui) apis with a tool, because maintaining all changes between versions could prove really tiresome... Anyway, I've been trying to use Sharpen, as I heard it's a pretty wicked tool used by some mono "freaks" to keep some versions of their tools in check.

What I did

Result

The plugin build perfectly, and is installed in my eclipse folder. But when I try to run the ant script after setting everything up, I get an error :

java.lang.RuntimeException: Application "sharpen.core.application" could not be found in the registry.

Conclusion

Well. I'm lost here. I have no idea what that means.

  • I'm using Windows 7 64bit
  • I'm using Eclipse 3.7
  • I'm using java 6 sdk 64 bit

If anyone ran into this and has a solution... That be helpful.

Thanks in advance.

Anders Gustafsson
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Redwarp
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1 Answers1

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Initially I tried the same approach as you did, with the same result. But if you follow the instructions in the README.build file, section Setting things up, you should be able to launch a secondary Eclipse applications with the sharpen.core and sharpen.xobotos plug-ins included.

You could then import your Java project subject to conversion into the secondary Eclipse app, provided that you have included a Sharpen Xobot builder command and nature into your project file, like this .project file in the XobotOS/android folder. I edited the .project file manually before importing the project, but I assume you can also configure this from within Eclipse?

The configuration files provided by Paul Du Bois are not applicable, instead you will need to copy and edit the converter-config.xml file from the XobotOS/android folder. This file in turn references a file in the app sub-folder, which probably also needs to be copied and edited.

This is basically as far as I have been able to take it until now. I have been able to edit the configuration files to enable the converter to run, but at this point I have only been able to generate C# stubs. If you or someone else manages to take this even further, I would be happy to learn how to generate real C# files using the XobotOS Sharpen converter.

UPDATE

Asked Miguel de Icaza if there were any instructions for converting arbitrary Java projects using the XobotOS Sharpen version. He responded that there are many hard-coded details in this version that makes it difficult to apply to arbitrary projects. At this stage he recommends Lluis Sanchez' Sharpen version to be used instead.

BTW, the NGit library has been moved to here. You will find a fully functional sharpen plug-in for Eclipse in the gen/plugins sub-folder.

UPDATE MAY 17

Note that you need to have the Plug-in Development Environment software installed in Eclipse to be able to build and run the plug-in projects. IF you are running Eclipse IDE for Java (SE) Developers, you need to extend it with the PDE software.

Anders Gustafsson
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    Actually, I had some success ! I found out that I installed the plugin wrongly, hense Eclipse reaction. I have tried so many versions of sharpen that some conflict arose. In the end, I cleaned everything, then made it work with lluis sharpen, and xobotos sharpen. If you don't wan't stub, you have to use every package as namespace in the converter-config.xml file... Well, that the solution I came up with, there might be other ways. – Redwarp May 16 '12 at 14:49
  • Interesting! I will try out your approach as soon as possible and see if I too can avoid stubs. Thanks! – Anders Gustafsson May 16 '12 at 14:56
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    Men, was I tired : my sentence above isn't proper English :P Add (and not use) every package as a namespace, in the api-def.xml file, with something like that : The output will tell how it should be treated. If you want no docs, you will put output="/output/sharpen-no-docs", etc... – Redwarp May 16 '12 at 15:51
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    @Redwarp, I'm glad you figured out how to do this, but I'm still lost. I've copied the `sharpen.core_1.0.0.jar` file from ngit to Eclipse's `plugin` folder, but I have no idea how to actually use it from within Eclipse. This whole ordeal has made me hate Java development more than I imagined possible before. Everything on db4o's pages are outdated and incomplete and I can't find any tutorial on how to do everything required to convert a simple `.java` file to a `.cs` file. :( – Asbjørn Ulsberg Feb 04 '14 at 10:03