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Saving AST of xText runtime model as an ecore model [message #1808396]

Sun, 23 June 2019 17:34

Eclipse User

I am creating a DSL in xText which I then compile and run in the xText runtime environment. In this runtime environment I can then of course create a new file * file.dslextension * in which I can write a model according the DSL specification (the latter can of course be viewed as the meta-model of the model I am writing in the runtime environment). So far everything is fine.

Now I want to export this model (NOTE: NOT the ecore specification of the meta-model, which is the DSL specification) to an ecore model. A similar question has been asked on StackOverflow, but I don't know how to implement that solution in Eclipse (and hence I don't even know if that solution works). So basically what I want is to export the AST (which is an ecore model itself) of the model I create in the xText runtime environment to an actual ecore file containing the model. I want to use that ecore file afterwards for making transformations with the QVTo language.

I tried to read tutorials on how to adapt the xTend files in the org.xtext.example.generator package, but all these tutorials focus on creating proprietary transformations for very specific cases. I just want xText to automatically generate an ecore file of the models (DSL instances) that I write in the xText runtime environment.

P.S. I also cross-posted this on stackoverflow

[Updated on: Sun, 23 June 2019 17:35] by Moderator

Re: Saving AST of xText runtime model as an ecore model [message #1808398 is a reply to message #1808396]

Mon, 24 June 2019 00:27

Eclipse User

hi, can you be a bit more specific on what you actual problem is.

EcoreFactory.eINSTANCE.createEPackage creates a package
EcoreFactory.eINSTANCE.createEClass creates a class

do a model 2 model transformation using these
the with-expression and create methods in xtend might come handy for that purpose

you could call this from the generator. or a custom command or ... (insert your requirement here)

Re: Saving AST of xText runtime model as an ecore model [message #1808402 is a reply to message #1808398]

Mon, 24 June 2019 01:02

Eclipse User

Hi

You terminology seems confused.

If you want to save as an Ecore model then why don't you use Ecore (or Xcore or OCLinEcore) as your DSL?

I presume you actually mean save as XML/XMI in which case you have to do very little. Just move the DSLResource.getContents() to an XMIResourceImpl.getContents(), setURI and save.

Sometimes, but I think it is broken now, you could just ave as *.xml in the DSL editor.

Regards

Ed Willink

Re: Saving AST of xText runtime model as an ecore model [message #1808410 is a reply to message #1808402]

Mon, 24 June 2019 04:18

Eclipse User

An example implementation on how to achieve that is available under:
https://github.com/franca/franca/blob/master/plugins/org.franca.core.dsl.ui/src/org/franca/core/dsl/ui/handlers/GenerateXMIHandler.java

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