CODEWITHSUNDEEP
eclipse-emfemf
Lii
Lii

Reputation: 12131

Use the same project for EMF model and edit code?

Can I somehow use the same Eclipse plug-in project for both a generated EMF model and the corresponding generated EMF Edit code?

Normally these two components reside in two different projects, the EMF Edit one with the suffix .edit to its name. I find this superfluous, since there is so little code in the Edit project, and it is so closely related to the model code.

I have tried setting both the modelDirectory and the editDirectory Gen Model attributes to (different) directories in the same project, but that seems to lead to endless confusion and build problems. I think maybe the two generation steps overwrite each others project setting files.

Upvotes: 0

Views: 153

Answers (1)

Lii
Lii

Reputation: 12131

After some more experimentation it seems like it works fine to have EMF and EMF Edit generated code in the same project.

The things I had to do to make it work are the following:

  1. Setting the genmodel property modelDirectory and editDirectory to the same directory. Otherwise I got a build error saying "The type ... is already defined in ...".
  2. Setting the genmodel property bundleManifest="false". Otherwise the plug-in ID is overwritten by the generation process.

Apart from this I also set updateClasspath="false" to avoid that the generation process messes around with that.

The automatic updates to the manifest and plugin.xml files seem to be the following:

  1. Set plug-in ID
  2. Add exported packages
  3. Add EMF extensions to plugin.xml

2 and 3 needs to be performed manually if they are desired. That would involve adding entries to plugin.xml similar to these:

<extension point="org.eclipse.emf.ecore.generated_package">
   <!-- @generated model -->
   <package
         uri="somePackage"
         class="somePackage.SomePackage"
         genModel="model/model.xcore"/>
</extension>

<extension point="org.eclipse.emf.edit.itemProviderAdapterFactories">
   <!-- @generated model -->
   <factory
         uri="somePackage"
         class="somePackage.someClass"
         supportedTypes=
           "org.eclipse.emf.edit.provider.IEditingDomainItemProvider
            org.eclipse.emf.edit.provider.IStructuredItemContentProvider
            org.eclipse.emf.edit.provider.ITreeItemContentProvider
            org.eclipse.emf.edit.provider.IItemLabelProvider
            org.eclipse.emf.edit.provider.IItemPropertySource"/>
</extension>

Upvotes: 1

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