Eclipse UML plugin with Java Code Generation

Question

Does anyone know of a good (read: Free) Eclipse UML plugin that can also do code generation? If not, does anyone know of any good Eclipse UML plugins?

EDIT

Answer 1

I agree with Jordi Cabot. you can basically exploit the Eclipse Modeling Framework with one of the existing model editors (i.e. Papyrus, TopCased, etc.). Then you can write your own generation workflow by means of Acceleo, an Eclipse implementation of the MOF to Text Transformation Language. It enables you to dive into a model and generate the text you want (i.e. Java, C++, C, python, Matlab, etc.) from it.

At the beginning it may look a bit weird and hard to understand but it is the best environment I know for this purpose. It is totally conform to the OMG standards.

Bye