[news.eclipse.modeling.m2m] [QVTO] How to handle optional attributes wit

[Mark Br?oerkens <broerkens@xxxxxx>]

Dear all,

I am using QVTO with a metamodel that contains optional (0..1 
multiplicity) attributes which are of type EBoolean.
In order to be able to distinguish between 'true', 'false' (the default) 
and '<not set>' the property 'unsettable' is set to 'true'.
In Java I can find out if the attribute is set by calling 'eIsSet()'.

In QVTO I tried the following expression to check if the value of an 
optional attribute was set:

obj.myOptionalAttribute->notEmpty()

This worked fine for most attributes. Unfortunately, it doesn't work for 
attributes of type EBoolean (or enumerations).

Did I find a bug in QVTO/OCL or is there another way for finding out if 
an optional attribute is set in QVTO?

Thank you very much in advance.

Kind regards


Mark