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Instance of Ecore.ecore [message #1129055]

Tue, 08 October 2013 08:40

aurel pestell

Messages: 90
Registered: October 2013
Location: Sweden

Member

Hello,

My first post here !
In my project, I have a model-to-Model transformation using Atl.
It maps the AST ecore metamodel generated by Xtext to the metamodel of Ecore itself (Ecore.ecore).
So, when I write some class definitions in my Xtext DSL, I get an XMI instance of Ecore.ecore (for instance: MyClass!name is mapped to Eclass!name).
My question is: how can I generate the Ecore metamodel from this XMI file ?

I hope it is clear enough, I am quite new to MDE.

Thanks in advance !

Aurel

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Re: Instance of Ecore.ecore [message #1129961 is a reply to message #1129055]

Wed, 09 October 2013 05:20

Ed Merks

Messages: 30813
Registered: July 2009

Senior Member

Aurel,

Comments below.

On 08/10/2013 4:37 PM, aurel pestell wrote:
> Hello,
>
> My first post here !
> In my project, I have a model-to-Model transformation using Atl.
> It maps the AST ecore metamodel generated by Xtext to the metamodel of
> Ecore itself (Ecore.ecore).
I see.
> So, when I write some class definitions in my Xtext DSL, I get an XMI
> instance of Ecore.ecore (for instance: MyClass!name is mapped to
> Eclass!name).
I.e., you end up with some type of *.ecore resource containing an
EPackage containing some EClassifiers...
> My question is: how can I generate the Ecore metamodel from this XMI
> file ?
You're asking how you can generate Java code from your *.ecore
resource? You'd need to create a *.genmodel like what you see in the
tutorials and use that to generate the code.
>
> I hope it is clear enough, I am quite new to MDE.
>
> Thanks in advance !
>
> Aurel

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Re: Instance of Ecore.ecore [message #1163893 is a reply to message #1129961]

Thu, 31 October 2013 09:37

aurel pestell

Messages: 90
Registered: October 2013
Location: Sweden

Member

Hello Ed Merks, sorry for the late response !

My question was more about transforming a Xtext DSL code into an ecore representation.
I managed to do it, it is not super easy but it basically works that way:

1) DslCode.mydsl===parsed into "Ecore AST" representation (using Xtext) then serialized using EMF api===> DslCode.xmi
2) DslCode.xmi ===Mydsl.ecore-to-Ecore.ecore ATL transformation===> DslCodeEcoreRepresentation.xmi
3) DslCodeEcoreRepresentation.xmi ===Deserialization using EMF api==> DslCodeEcoreRepresentation.ecore

Then you can produce the genmodel and generate Java code (for free).

It just works perfectly and is very time saving compared to other solutions (Xtend templates or DoSwitch+Dynamic Ecore).

If somebody is interested, I help, just post a message here.

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