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IJvmModelAssociations across models [message #1758755]

Sat, 01 April 2017 22:00

Daniel Cardin

Messages: 109
Registered: July 2009

Senior Member

I have two linked grammars that complement each other.
I can use the normal scoping context to link to a model from the other grammar just fine.
Example Model DSL:

Model
     prop1  : Integer
     prop2 :  Model2
  
Model2
   prop1 
   prop2

When referring to a Model from my second DSL, I can find the properties just fine. However, when it refers to a property of model2, I need to match it to the right EObject to go fetch the properties.

In the Model DSL, I use

IJvmModelAssociations.getSourceElements(theJVMTypeForModel2)

In the context of the Model DSL, this works properly. But it seems to me like the IJvmModelAssociations is bound to the associations for a specific DSL...

Any way I can do it clean without doing some weird global variable somewhere ?

Last point. It's normal that I have to go through the JVM type at that point, because that type of reference is permitted, it will just (rightly so) not return any properties.

Thanks

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Re: IJvmModelAssociations across models [message #1758774 is a reply to message #1758755]

Sun, 02 April 2017 16:05

Daniel Cardin

Messages: 109
Registered: July 2009

Senior Member

OK, The problem was not related to the injected IJvmModelAssociations.
I was using the wrong type reference cast in that specific instance.

I would have deleted the post, but it's not available as an option.

Thanks

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Re: IJvmModelAssociations across models [message #1758777 is a reply to message #1758774]

Sun, 02 April 2017 18:05

Daniel Cardin

Messages: 109
Registered: July 2009

Senior Member

Update on the issue. My fix worked only if I managed to get a reference to the IJvmModelAssociations injected in the ModelDsl scopes provider... So I'm back to square one.
My program works because of the way I've statically referenced it, but it doesn't look like it's the right way to do it.
So your suggestions are still welcome

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Re: IJvmModelAssociations across models [message #1758787 is a reply to message #1758777]

Mon, 03 April 2017 02:46

Christian Dietrich

Messages: 14497
Registered: July 2009

Senior Member

Instill do. understand zero what you are doing in your code and what your problem is

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: IJvmModelAssociations across models [message #1758788 is a reply to message #1758787]

Mon, 03 April 2017 05:40

Christian Dietrich

Messages: 14497
Registered: July 2009

Senior Member

p.s. if you wantr to0 access components/injector of other dsls you can use IResourceServiceProvider.Registry.INSTANCE.getResourceServiceProvider(uriOfAFileOfTheOtherDsl).get(XXXX.class);

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: IJvmModelAssociations across models [message #1758818 is a reply to message #1758788]

Mon, 03 April 2017 13:47

Daniel Cardin

Messages: 109
Registered: July 2009

Senior Member

I wanted to use the JvmModelAssociations of one model in the scoping engine of another one. With your suggestion I was able to make it clean with

@Inject IResourceServiceProvider.Registry registry

and use it with:

val associations = registry.getResourceServiceProvider(type.eResource.URI).get(IJvmModelAssociations)

It works. Thanks for the new tip.

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