Re: [Ikvm-developers] Class.forName and csharp classes
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Re: [Ikvm-developers] Class.forName and csharp classes
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From: Martin G. <M.G...@bi...> - 2017-02-17 19:20:36
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Hi Thanks for that offer - I put up a github repo at https://github.com/mgerhardy/ikvm-class-for-name Quick and dirty - also the compiled class files if disassembling them is needed. There is a makefile included that shows the used commandlines that are/were used to create the binaries. Again - thanks a lot for all your help Regards Martin ________________________________ Von: and...@gm... [and...@gm...] Gesendet: Freitag, 17. Februar 2017 18:55 An: Martin Gerhardy; Jeroen Frijters; ikv...@li... Betreff: RE: [Ikvm-developers] Class.forName and csharp classes Martin, Would you be willing to create and upload a test case for this into a Git Repository? If you don’t have a GitHub account I can create you a repository to use. I’d like to get this into the set of Unit Tests. In order to do that it would be incredibly helpful for you to create a bare bones example that exhibits the behavior you are seeing. I also didn’t see the versions of tools you were using. That would be helpful as well. Feel free to contact me directly if you need help setting up the Test Case for this. >From parts of my memory that could be completely fabricated I remember their being issues in certain versions of .NET when one would attempt to load classes from the Executing Domain that existed in the .exe assembly. I bet if you were to create a new Assembly, create a class in it, then add it to the path, everything would work. Also remember that the JDK after 7 (I believe) has it’s own pseudo Classloader domain-like management. So you might need to use a different classloader when attempting to .forName your new class. Take a Java disassembler and see what your .NET CLR class is being turned into as well. I hope to take a look at your sample test case and get this working for you. If you have any issues getting it somewhere online let me know asap and I’ll help. Regards, Andrew {givenname}.{surname}@duelingcoders.com {givenname}.{surname}@gmail.com From: Martin Gerhardy<mailto:M.G...@bi...> Sent: Friday, February 17, 2017 10:42 AM To: Jeroen Frijters<mailto:je...@su...>; ikv...@li...<mailto:ikv...@li...> Subject: Re: [Ikvm-developers] Class.forName and csharp classes Hi Jeroen maybe I am misisng something, but the csharp class is part of the exe, the dll (converted jar) is trying to load a class from the exe - do I have to add the exe to the classloader in the csharp application? Isn't that implicitly the case? Or do I have to create another dll for my csharp stuff and just reference it from a minimal exe? Can you give an example on how to do that? Thanks again for helping me. Regards Martin ________________________________________ Von: Jeroen Frijters [je...@su...] Gesendet: Freitag, 17. Februar 2017 16:19 An: Martin Gerhardy; ikv...@li... Betreff: RE: Class.forName and csharp classes Hi Martin, In that case it is probably simply a class loader issue. The class loader you use for Class.forName() must be able to see the assembly. The easiest solution is to add the assembly to the boot class loader with the ikvm.runtime.Startup.addBootClassPathAssembly() method. Regards, Jeroen > -----Original Message----- > From: Martin Gerhardy [mailto:M.G...@bi...] > Sent: Friday, February 17, 2017 16:08 > To: Jeroen Frijters <je...@su...>; ikvm- > dev...@li... > Subject: AW: Class.forName and csharp classes > > Hi Jeroen, > > thanks for the answer - I tried both: > > --------------------------- > using System.Diagnostics; > using System; > > [assembly: IKVM.Attributes.NoPackagePrefixAttribute] > namespace foo > { > class Foo > { > public Foo() > { > } > } > > class MainClass > { > public static void Main (string[] args) > { > Console.WriteLine("starting up..."); > Launcher.main("foo.Foo"); > } > } > } > --------------------------- > > > package foo; > > public class Launcher { > public static void main(final String name) { > try { > System.err.println("Starting up and trying to load " + > name); > final Class<?> forName = Class.forName("cli." + name); > System.out.println("Finished loading " + forName); > } catch (final ClassNotFoundException e) { > e.printStackTrace(); > } > } > } > > --------------------------- > > Neither works - neither the additional cli. namespace prefix nor adding > the attribute (Not sure if I did that one correctly) > > Compiling with the commands: > ikvmc -classloader:ikvm.runtime.ClassPathAssemblyClassLoader - > assemblyattributes:$(BIN)/AssemblyInfo.class -target:library $< > mcs -target:exe -main:foo.MainClass - > r:System.dll,IKVM.Runtime.dll,IKVM.OpenJDK.Core.dll,$(NAME).dll - > out:proof-of-concept.exe GuiceRepro.cs AssemblyInfo.cs > > > > Regards > Martin > > ________________________________________ > Von: Jeroen Frijters [je...@su...] > Gesendet: Freitag, 17. Februar 2017 14:50 > An: Martin Gerhardy; ikv...@li... > Betreff: RE: Class.forName and csharp classes > > Hi Martin, > > Did you take into account that the C# classes get a "cli." prefix in > Java (by default)? > > You can apply the IKVM.Attributes.NoPackagePrefixAttribute to the class > or assembly to disable this. > > Regards, > Jeroen > > > -----Original Message----- > > From: Martin Gerhardy [mailto:M.G...@bi...] > > Sent: Wednesday, February 15, 2017 11:34 > > To: ikv...@li... > > Subject: [Ikvm-developers] Class.forName and csharp classes > > > > Hi, > > > > we are converting a deserialization jar via ikvm into a dll and bind a > > csharp class via guice to some of the serialized classes. The java > > code contains a call for Class.forName for that class. As our injected > > class is a csharp class, this doesn't work. Is there any way to work > > around this? (In the sense the Class.forName also finds csharp > > classes?) > > > > Regards > > Martin ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Ikvm-developers mailing list Ikv...@li... https://lists.sourceforge.net/lists/listinfo/ikvm-developers |
