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[Acceleo] - Problem with types invoking Java Wrappers [message #686425]

Wed, 22 June 2011 04:24

Eclipse User

Hi people.

I have worked with Acceleo for the last month and I'm satisfied with the tool. However, I have a problem I don't know how to solve it.

I have created a Java Wrapper, and it receives as parameter a domain class (csp.Constraint) of an ecore project. But it produces an exception when i invoke it from acceleo code.
I have tried to change the type to EObject, an then it works. However, the object received is a DynamicEObjectImpl, and when i try to cast to csp.Constraint, I obtain a ClassCastException.
I have read that I need to invoke MyPackage.eINSTANCE.getClass() to force the load, but i receive also an exception:

org.eclipse.emf.ecore.impl.EFactoryImpl cannot be cast to csp.CSPFactory

Thanks in advance.
Jesus.

Re: [Acceleo] - Problem with types invoking Java Wrappers [message #686589 is a reply to message #686425]

Wed, 22 June 2011 10:49

Eclipse User

Jesus,

Please post the stack trace of the exceptions you get, that will allow us to better understand what's happening behind the scene.

Without the exception traces, I can only guess that what you are missing might be the registration of your Package. You should have a generated ".java" class along your "main" template (the class you use in order to launch the generation). In that class is the method "registerPackages(ResourceSet)". Make sure that this method has a line for your CSPPackage; something of the sort :

resourceSet.getPackageRegistry().put(csp.CSPPackage.eINSTANCE.getNsURI(), csp.CSPPackage.eINSTANCE);

If that does not help, we'll need the exception traces Smile

.

Laurent Goubet
Obeo

Re: [Acceleo] - Problem with types invoking Java Wrappers [message #688052 is a reply to message #686589]

Thu, 23 June 2011 15:10

Eclipse User

Thank you Laurent!! It works Smile

. I modified registerPackages and registerResourceFactories methods to add my metamodel.

Thanks again Smile

Jesus.

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