Question

Casting objects

0

I have an entity B which inherits from entity A. I now want to create an object B that is an extension of an object already existing in A. But how do I create this object? I am unable to solve it with casting. Am I missing something or can this not be done? Regards, Ronald

asked 2012-11-01

Ronald Catersels

2 answers

1

You can't. You'll have to create a new object of Type B and copy all relevant attributes from your old object of type A. Then delete the old object of type A.

answered 2012-11-01

Achiel

Sebastiaan van den Broek · Accepted Answer · 2012-11-01

This is not how inheritance works, an instance of an entity is always a specific type, either of the superentity or one of its subentities. You can't add a specialization to an existing instance of an entity. You could of course create the correct instance and copy all fields and associations.