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M2M Transformation [message #1044130]

Thu, 18 April 2013 14:27

Arne Schröder

Messages: 2
Registered: April 2013

Junior Member

Is it possible to transform an XText model beyond simple change of names? I would like to create new types and insert them in the model. Say, my model definition is as follow:

Model:
	types+=Type*;
	
Type: 
	DataType | Bean;

DataType:
	"DataType" name=ID;
	
Bean:
	name=ID "{"
	(attributes+=Attribute)*
	"}";
	
Attribute:
	 name=ID ":" type=[Type];

From every Bean I would like to derive another object, say PersistantBean with new attributes and such. If I can insert these PersistantBeans into the Model, I can generate Java classes from the Beans and different classes from PersistantBeans. Is it possible?

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Re: M2M Transformation [message #1044334 is a reply to message #1044130]

Thu, 18 April 2013 19:40

Christian Dietrich

Messages: 14669
Registered: July 2009

Senior Member

Hi,

i do not really get your question.
why do you need to physically create additional stuff if this additional stuff is only relevant for generation?

and no there is no default hook for such a m2m

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: M2M Transformation [message #1044352 is a reply to message #1044334]

Thu, 18 April 2013 20:16

Arne Schröder

Messages: 2
Registered: April 2013

Junior Member

Quote:

why do you need to physically create additional stuff if this additional stuff is only relevant for generation?

Additional objects in the model will simplify the generation. I could use the same generator templates without worrying whether a Bean does mean a simple Bean or PersistantBean in a particular context.

Well, I will try a lighter solution: create lists of modified Beans in a helper method and forward them to the generator template without inserting them into the model.

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