[qvtd-dev] [Dev] Navigation attributes with null values

[Horacio Hoyos Rodriguez <hhr502@xxxxxxxxxx>]

Hi Ed,

 

What is the correct way to evaluate:

 

c2t.fromAttributes.leafs;

 

if fromAttributes value is null?

 

Currently OCL throws an exception: 'NavigableObject' rather than 'OclVoid' value required.

 

I think it should return invalid so the QVT engine can deal with it, i.e. the binding is not valid then don’t invoke the mapping.

 

Regards,

 

 

Horacio Hoyos Rodríguez

EngD Student

University of York

 

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