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xsd.ecore is not based on ecore.ecore [message #76158]

Fri, 07 November 2008 15:35

Joachim

Messages: 16
Registered: July 2009

Junior Member

Hi XSD developers,

I relate to org.eclipse.xsd_2.4.1.v200808251517.jar.

I found out, that xsd.ecore is unlike e.g. uml.ecore not based on
ecore.ecore.
Despite of the fact, that e.g. XSDConcreteComponent extends EObject, it
is not possible to access the functionality of ecore::EObject via
xsd::XSDConcreteComponent. Hence I cannot access e.g. the eResource()
method within an oAW xTend.

Can someone please explain to me, why the modeling of
XSDConcreteComponent in xsd.ecore is different from the JAVA code?

Have a look to uml.ecore to see how it can work. E.g. for uml::Package,
I can access all methods of ecore::EObject in an oAW xTend.

Regards,
Joachim Back

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Re: xsd.ecore is not based on ecore.ecore [message #76177 is a reply to message #76158]

Fri, 07 November 2008 15:47

Ed Merks

Messages: 33142
Registered: July 2009

Senior Member

Joachim,

Comments below.

Joachim Back wrote:
> Hi XSD developers,
>
> I relate to org.eclipse.xsd_2.4.1.v200808251517.jar.
>
> I found out, that xsd.ecore is unlike e.g. uml.ecore not based on
> ecore.ecore.
Not sure what you mean by that. It certainly doesn't extend the Ecore
metamodel. UML shouldn't have either, but they ignored me. :-P
>
> Despite of the fact, that e.g. XSDConcreteComponent extends EObject,
> it is not possible to access the functionality of ecore::EObject via
> xsd::XSDConcreteComponent. Hence I cannot access e.g. the eResource()
> method within an oAW xTend.
Why do you think it's not possible? It's definitely possible.
>
> Can someone please explain to me, why the modeling of
> XSDConcreteComponent in xsd.ecore is different from the JAVA code?
There's a difference between explicitly extending EObject (having the
EClass have EObject in the eSuperTypes) and implicitly extending it (all
modeled objects implement EObject and InternalEObject)...
>
> Have a look to uml.ecore to see how it can work. E.g. for
> uml::Package, I can access all methods of ecore::EObject in an oAW xTend.
I think this is more a question for xtend. They should assume that
EObject's methods are available even if the model doesn't have explicit
inheritance.
>
> Regards,
> Joachim Back

Ed Merks
Professional Support: https://www.macromodeling.com/

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