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EMF/ExtendingCodeGeneration
Summary
The intension of this page to collect experiences of implementing a Generation Adapter.
A sample implementation is the project org.eclipse.emf.examples.generator.validator
(see :pserver:anonymous@dev.eclipse.org:/cvsroot/modeling under org.eclipse.emf/org.eclipse.emf/examples)
GeneratorAdapter Class
The definition links like this
public class GenClassValidatorGeneratorAdapter extends GenBaseGeneratorAdapter {
The GenBaseGeneratorAdapter base class provide you the basic implementation you have to override:
- canGenerate
- generateXXXX
It's depend of the project type what generate method's you override. The following types you know from the menu in the Gen Model.
- MODEL_PROJECT_TYPE
- EDIT_PROJECT_TYPE
- EDITOR_PROJECT_TYPE
- TESTS_PROJECT_TYPE
In the method canGenerated you have to return true for your project types.
The prefix "GenClass" says this adapter works with the GenClass class of the genmodel.
In accordance to this you have to configure the extension point or you write a GeneratorAdapterFactory. All adapters types are:
- GenPackage Adapter
- GenEnum Adapter
- GenModel Adapter
- GenClass Adapter
Take care not all combinations and of project type and adapter type produce output. (e.g. I had no luck in the combination GenClass and EDITOR project)
JET Templates
The included JET Templates or better the static JET template classes have to be generated with the "old/basic" JET implementation. (choose "Convert Project to JET Project" in new wizard and do not create a "JET Transformation Project") The M2T JET project even in JET 1 mode produces a not compatible code: see BUG 333811
Links
- http://www.eclipse.org/forums/index.php?t=msg&S=26948a7500a8f8b49cfde1a577ad810c&th=155261&goto=48916
- http://www.eclipse.org/forums/index.php?t=msg&goto=647243&S=26948a7500a8f8b49cfde1a577ad810c#msg_647243
Here another example: http://code.google.com/a/eclipselabs.org/p/emf/source/browse/#hg%2Forg.eclipselabs.emf.codegen.addon