ClearReference

ClearReference

ClearReference(access expression), ClearReference(access expression, backRef), ClearReference(STACK, STACK )

Parameters: an access expression, name of the back reference.

Stack

Stack		Description
Stack(In)		one object
Stack(Out)		-

The pointer p reached from the target object via the access expression should contain the value NULL after this operation. If the pointer selected in the target object has been declared in the DDI as a 1-1 or 1-m reference, the name of a back reference must be specified as the second operand. The back reference (pointer or collection) is updated after checking the type specified in the DDI. In case of a type conflict, the entire operation is aborted. This also applies if a
does not point to the object containing the pointer p.

Note: A transaction starts with a persistent object.

Attention!
obsolete, please use Unlink