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How to use templates selectively [message #534068]

Mon, 17 May 2010 20:51

Alexey

Messages: 36
Registered: March 2010

Member

Suppose I have two types of entities (specified e.g. with annotations): type A and type B. Code generation for entities of type A should use templates T1 and T2, while for entities of type B templates T2 and T3 should be used.

I always can check type of entity after template called, but how to tell emf that this particular template for this particular situation should be "skept", no code should be generated? What should I call on emf, or what should I return from template file (_.java)? E.g., if I return empty string from template java file, will it work for me? Should be some legal way to tell emf to skip tempalte for particular GenClass.

Thanks

Alexey

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Re: How to use templates selectively [message #534075 is a reply to message #534068]

Mon, 17 May 2010 21:19

Ed Merks

Messages: 33142
Registered: July 2009

Senior Member

Alexey,

The logic of which templates to invoke is in the generator adapters.
But of course for the existing generator adapters, the logic is all
there already and beyond your direct control.

Alexey wrote:
> Suppose I have two types of entities (specified e.g. with
> annotations): type A and type B. Code generation for entities of type
> A should use templates T1 and T2, while for entities of type B
> templates T2 and T3 should be used.
>
> I always can check type of entity after template called, but how to
> tell emf that this particular template for this particular situation
> should be "skept", no code should be generated? What should I call on
> emf, or what should I return from template file (_.java)? E.g., if I
> return empty string from template java file, will it work for me?
> Should be some legal way to tell emf to skip tempalte for particular
> GenClass.
>
> Thanks
>
> Alexey

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: How to use templates selectively [message #534272 is a reply to message #534075]

Tue, 18 May 2010 14:41

Alexey

Messages: 36
Registered: March 2010

Member

Ed,

Thanks for explanation.

But still, is there any way to express in template that "generator adapter" should not create java file? Any run time condition that would not result in aborting a whole code generation session, but only the current artifact from the current template?

Thaniks

Alexey

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Re: How to use templates selectively [message #534337 is a reply to message #534272]

Tue, 18 May 2010 17:34

Ed Merks

Messages: 33142
Registered: July 2009

Senior Member

Alexey,

Comments below.

Alexey wrote:
> Ed,
>
> Thanks for explanation.
> But still, is there any way to express in template that "generator
> adapter" should not create java file?
No, the template specifies the text to produce given the input.
> Any run time condition that would not result in aborting a whole code
> generation session, but only the current artifact from the current
> template?
No.
>
> Thaniks
>
> Alexey

Ed Merks
Professional Support: https://www.macromodeling.com/

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