[news.eclipse.modeling.m2t] Re: Dynamically call another xtend method fr

[Sebastian Zarnekow <Sebastian.Zarnekow@xxxxxxxxx>]

Hi Joerg,

sorry for the late response. It is actualle not possible to dynamically 
invoke extensions. Neither the name of an extension may be an expression 
nor the refered extension file may be calculated at runtime. As far as I 
know, there is no workaround.

Please feel free to file a bugzilla.

Maybe there is one rather tricky way to do what you want.
The ResourceLoader is the class, that should resolve a given path to an 
input stream. Maybe you can use an own implementation and register it at 
the ResourceLoaderFactory. Your ResourceLoader could be configured based 
on your source model _before_ you invoke the transformation. I'm not 
that sure about it but this may work.

Regards,
Sebastian
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Joerg Reichert schrieb:
> Is it possible to dynamically call a Xtend method in another file from 
> the current Xtend file? The path of the method to call is dynamically 
> calculated at runtime in the first extension file. It's like a need for 
> reflection for Xtend.
>
> Use Case:
>
> provided
> - source model
> - transformation description model containing the paths to the extension 
> files
> - target model - a list of extension files having the same name and the 
> same named methods just differ in the directory location (so the 
> solution to import all possible to use extensions won't work)
>
> runtime
> At runtime it is determined on basis of the source model which paths are 
> read out from the transformation model, defining the xtend file and the 
> method to call. The context of the current xtend method should be also 
> available for the called extension.