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Mwe2 Workflow - modify variables at runtime [message #1053125]

Thu, 02 May 2013 11:09

Eclipse User

Hi,
I'm trying to make a tool in which the users can choose a model from different paths/ or create a model based on my language for the mwe2 file (not the ecore model!) and then the generated file to be placed where the user wants (directory etc..)
Now this works if I run the mwe2 file manually (right click -> run as), but I want a solution for doing this from code/runtime.

My question is if the following can be done:

to dynamically change the model path and the output outlet path (at runtime)
to run the mwe2 file at runtime (to don't need to go to press right click and run as ..stuff)
Thanks in advance!

Re: Mwe2 Workflow - modify variables at runtime [message #1053184 is a reply to message #1053125]

Thu, 02 May 2013 18:45

Eclipse User

Hi,

afaik it is still not possible to programatically run a mwe2 workflow from an osgi environment (eclipse)
https://bugs.eclipse.org/bugs/show_bug.cgi?id=318721

=> thus i'd simply create a java class that basically does the same as the workflow and call that one.

Re: Mwe2 Workflow - modify variables at runtime [message #1053656 is a reply to message #1053184]

Tue, 07 May 2013 03:48

Eclipse User

Hi,
thanks for the answer! Could you please give me more details about the work around Smile

Because as far I understood is not possible to run this from an UI (for example a wizard).
The idea is that I'll want to make it possible that an user to set the path of where to save/set the file with my language "something.mylang" and then to run the generation from that (eventually before that to show the editor for a final check).
Any answer will be helpful. Thanks in advance!
Best regards,
Edwin W.T.

Re: Mwe2 Workflow - modify variables at runtime [message #1053661 is a reply to message #1053656]

Tue, 07 May 2013 04:05

Eclipse User

I mean:

Workflow workflow = new Workflow();
workflow.addComponent(...);
workflow.addComponent(...);
workflow.addComponent(...);
workflow.preInvoke();
IWorkflowContext ctx = new WorkflowContextImpl();
ctx......
workflow.invoke(ctx);
workflow.postInvoke();

alternatively use mwe1

or no workflow at all (as i do it in my blog post)

http://christiandietrich.wordpress.com/2011/10/15/xtext-calling-the-generator-from-a-context-menu/

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