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Error while testing OCLinEcore Tutorial [message #701944]

Mon, 25 July 2011 19:04

fafanellu

Messages: 37
Registered: July 2011

Member

Hello,

I'm trying to do the tutorial "Working with OCLinEcore" (I use Helios Service Release 2)

I managed to create the library metamodel, then the dynamic model instance, which can be successfully validated.

But, after adding the simple constraint "invariant SufficientCopies", when I try to re-validate, there is an error, but unfortunately not about the violation of the constraint.

Here is what I get : An exception occurred while delegating evaluation of the 'SufficientCopies' constraint on 'Book b2': null

any idea about what this is ?

thanks for helping

bye

[Updated on: Mon, 25 July 2011 19:06]

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