Re: Returning a CLR type from IronRuby

> 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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