[news.eclipse.modeling.mdt.uml2] Re: Stereotype and Properties

[Kenn Hussey <Kenn.Hussey@xxxxxxxxx>]

Thibault,

This has been discussed in previous threads, but if you take a look at 
the way UML defines data type and the way Ecore defines it, you'll see 
that they really aren't the same. The concept of primitive types in UML 
is closer to Ecore's data type...

Kenn

Thibault Landré wrote:
> Hi Kenn,
>
> You are right. Primitive type are mapped to EDataType. UML DataType are 
> mapped to EClass.
>
> So properties typed by UML Datatype are mapped to EReference whereas 
> properties typed by UML PrimitiveType are mapped to EAttribute.
>
> Why UML Datatype are not mapped to EDatatype ?
>
> Thanks,
>
> Thibault
>
>
> Kenn Hussey a écrit :
> > Thibault,
> >
> > Off the top of my head, I suspect the reason is that UML2 maps profile 
> > elements to Ecore during the profile "definition" process and data 
> > types are automatically mapped to Ecore classes (which don't have 
> > "simple" cell editor support) rather than data types.
> >
> > Kenn
> >
> > Thibault Landré wrote:
> > > Hi,
> > >
> > > I would like to understand why in the uml2 editor, it is possible to 
> > > edit a property of a sterotype typed by a primitiveType whereas  it 
> > > is not possible when the property is typed by a Datatype ?
> > >
> > > TestCase1 :
> > > StereotypeA has a property (prop) typed by a primitiveType (Real for 
> > > instance). StereotypeA has an extension on Metaclass 'Element'
> > > When applying the stereotype to a class, the properties view allows 
> > > you to edit the property 'prop'.
> > >
> > > TestCase2 :
> > > StereotypeB has a property (propB) typed by a datatype (Time for 
> > > instance). StereotypeB has an extension on Metaclass 'Element'
> > > When applying the stereotype to a class, you can't edit the property 
> > > of StereotypeB (propB is not displayed in the properties view).
> > >
> > > Why ?
> > > I have look into the UML OMG specification to see if a difference 
> > > between a PrimitiveType and DataType could explain this behaviour, 
> > > but I have not found any clue.
> > >
> > > Thanks,
> > >
> > > Thibault