Xtext is a great tool. A good starting point for reading is http://www.eclipse.org/Xtext/documentation/ The Xtext plugin for eclipse ships with the so called 'domain model' example. It is a DSL (Domain Secific Language) for describing your entities and their relationships. Next step is to write a generator based on Xpand - a transformation language. There is an analogy to the world of xml: - with the help Xtext you are writing a grammar like XSD - your model is syntactically correct if it is conform to your grammar. A model is like XML. (your model is semantically correct, if it correctly decribes your business within your functional domain) - Xpand is like XSLT. It is a language to transform your models to whatever you want. in your case JPA. Your challange is to write a generator which transforms your model (of entities) to JPA (or GWT or both or whatever) code. I wrote a full blown extended version of the original domain model example with a code generator for jpa (+ gwt request factory). If your company needs professional help in the context of generative development with jpa / gwt please contact me directly: [email protected] Cheers Daniel Dietrich
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