Re: Returning a CLR type from IronRuby

It is definitely the right assembly and I did post the question on IronRuby
but have not got an answer yet.

When I find out if it is possilbe I will def. post my answer here.

Cheers



2009/3/3 Fabian Schmied <[email protected]>

> > Thanks Fabian but that has not worked.
> > I am wondering if this is possible from IronRuby yet.
>
> I think it should be, are you sure you've loaded the right Assembly
> into the engine?
> If so, I'd recommend checking at a IronRuby discussion group. Share
> the results here if you do so, please.
>
> Fabian
>
> > 2009/3/3 Fabian Schmied <[email protected]>
> >
> >> > [A]Horn.Core.DSL.Domain.BuildMetaData cannot be cast to
> >> > [B]Horn.Core.DSL.Domain.BuildMetaData. Type A originates from
> >> > 'Horn.Core.DSL.Domain, Version=1.0.0.0, Culture=neutral,
> >> > PublicKeyToken=null' in the context 'LoadNeither' at location
> >> >
> >>
> 'C:\Projects\horn\branches\rubydsl\src\Horn.Dsl.Specificatioin\bin\Debug\Horn.Core.DSL.Domain.dll'.
> >> > Type B originates from 'Horn.Core.DSL.Domain, Version=1.0.0.0,
> >> > Culture=neutral, PublicKeyToken=null' in the context 'Default' at
> >> location
> >> >
> >>
> 'C:\Users\paul.cowan\AppData\Local\Temp\1vt2usw2.rxf\Horn.Dsl.Specificatioin\assembly\dl3\1d5ed945\7c19e429_1a97c901\Horn.Core.DSL.Domain.DLL'.
> >>
> >> While you'd probably get better answers at a Ruby-specific site, I'll
> >> give it a try: The problem seems to be that IronRuby loads the
> >> Horn.Core.DSL.Domain.dll assembly for a second time (and from a
> >> different location), so the BuildMetaData type used by your IronRuby
> >> class is not the same as the one used by the C# class.
> >>
> >> Can you try to do the following:
> >> engine.Runtime.LoadAssembly (typeof (BuildMetaData).Assembly); // or
> >> similar
> >>
> >> at the beginning?
> >>
> >> Fabian
> >>
> >> On Tue, Mar 3, 2009 at 7:22 AM, Paul Cowan <[email protected]> wrote:
> >> > Hi,
> >> >
> >> > I am trying to return a CLR object from Iron Ruby.
> >> >
> >> > I have the following CLR type defined in C#
> >> > public class BuildMetaData
> >> > {
> >> >    public string Description { get; set; }
> >> > }
> >> >
> >> >
> >> > I have the following IronRuby file:
> >> >
> >> > $:.unshift(File.dirname(__FILE__) + '/../bin/Debug')
> >> > require 'mscorlib'
> >> > require 'Horn.Core.DSL.Domain'
> >> >
> >> > class MetaDataFactory
> >> >    def return_meta_data()
> >> >        meta = Horn::Core::DSL::Domain::BuildMetaData.new
> >> >        meta.Description = "A description of sorts"
> >> >        meta
> >> >    end
> >> > end
> >> >
> >> > I have the following test that is failing:
> >> >
> >> > [Fact]
> >> > public void Then_a_build_metadata_object_is_returned()
> >> > {
> >> >    var engine = Ruby.CreateEngine();
> >> >
> >> >    engine.ExecuteFile("test.rb");
> >> >
> >> >    var code = String.Format("{0}.new.method :{1}", "MetaDataFactory",
> >> > "return_meta_data");
> >> >
> >> >    var action = engine.CreateScriptSourceFromString(code).Execute();
> >> >
> >> >    var result = (BuildMetaData)engine.Operations.Call(action);
> >> >
> >> >    Assert.Equal(result.Description, "A description of sorts");
> >> > }
> >> >
> >> >
> >> >
> >> >
> >> > It fails when trying to cast the object returned from IronRuby.
> >> >
> >> > I get the following error message:
> >> >
> >> > [A]Horn.Core.DSL.Domain.BuildMetaData cannot be cast to
> >> > [B]Horn.Core.DSL.Domain.BuildMetaData. Type A originates from
> >> > 'Horn.Core.DSL.Domain, Version=1.0.0.0, Culture=neutral,
> >> > PublicKeyToken=null' in the context 'LoadNeither' at location
> >> >
> >>
> 'C:\Projects\horn\branches\rubydsl\src\Horn.Dsl.Specificatioin\bin\Debug\Horn.Core.DSL.Domain.dll'.
> >> > Type B originates from 'Horn.Core.DSL.Domain, Version=1.0.0.0,
> >> > Culture=neutral, PublicKeyToken=null' in the context 'Default' at
> >> location
> >> >
> >>
> 'C:\Users\paul.cowan\AppData\Local\Temp\1vt2usw2.rxf\Horn.Dsl.Specificatioin\assembly\dl3\1d5ed945\7c19e429_1a97c901\Horn.Core.DSL.Domain.DLL'.
> >> >
> >> > The only way I can access the members of the BuildMetaData is using
> >> > reflection.
> >> >
> >> > If you look at the error message, both types are in different
> locations.
> >> >
> >> > Is there a way round this yet in Ironruby?
> >> >
> >> > Cheers
> >> >
> >> > Paul
> >> >
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