An object-view causes an object reference to be treated as though it had the specified description. A runtime conformance
check for this description will be done on the object.
General Format
Syntax Rules
- Identifier-1 must be of class object; the predefined object references SUPER and NULL must not be specified.
- An object-view must not be specified as a receiving operand.
General Rules
- This reference of identifier-1 is treated at compile-time as though it had the description specified by the AS phrase.
- If class-name-1 is specified without either of the optional phrases, identifier-1 is treated as though it were described as
USAGE IS OBJECT REFERENCE class-name-1. If the object referenced by identifier-1 is not an object of class-name-1 or an object
of a subclass of class-name-1, the EC-OO-CONFORMANCE exception condition is set to exist.
- If the FACTORY phrase is specified and the ONLY phrase is not specified, identifier-1 is treated as though it were described
as USAGE OBJECT REFERENCE FACTORY OF class-name-1. If the object referenced by identifier-1 is not the factory object of class-name-1
or the factory object of a subclass of class-name-1, the EC-OO-CONFORMANCE exception condition is set to exist.
- If the ONLY phrase is specified and the FACTORY phrase is not specified, identifier-1 is treated as though it were described
as USAGE OBJECT REFERENCE class-name-1 ONLY. If the object referenced by identifier-1 is not an object of class-name-1, the
EC-OO-CONFORMANCE exception condition is set to exist.
- If both the FACTORY phrase and the ONLY phrase are specified, identifier-1 is treated as though it were described as USAGE
OBJECT REFERENCE FACTORY OF class-name-1 ONLY. If the object referenced by identifier-1 is not the factory object of class-name-1,
the EC-OO-CONFORMANCE exception condition is set to exist.
- If interface-name-1 is specified, identifier-1 is treated as though it were described as USAGE OBJECT REFERENCE interface-name-1.
If the object referenced by identifier-1 does not implement interface-name-1, the EC-OO-CONFORMANCE exception condition is
set to exist.
- If UNIVERSAL is specified, identifier-1 is treated as though it were described as USAGE OBJECT REFERENCE without any of the
optional phrases to indicate the class or interface for objects referenced by identifier-1. The EC-OO-CONFORMANCE exception
condition is not set to exist.