Re: small OCL query



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Bernhard Rumpe (rumpe@informatik.tu-muenchen.de)
Tue, 27 Mar 2001 12:34:39 +0200


Leonor Barroca wrote: > > Am I right in thinking that in OCL if a navigation expression X results in > an empty set then any navigation expression of the type X.a (X followed by > some other role name) will also result in an empty set? Yes, you are. > Also, that in OCL comparing an empty set with an object of some type will > result in false? Except if you compare it with another empty set. Bernhard


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