| Description | The OBJECT IDENTIFIER (OID) of an object that overrides
whether the instance of expObjectID is to be considered
usable. If the value of the object at expObjectConditional
is 0 or not instantiated, the object at expObjectID is
treated as if it is not instantiated. In other words,
expObjectConditional is a filter that controls whether or
not to use the value at expObjectID.
The OID may be for a leaf object (e.g. sysObjectID.0) or
may be wildcarded to match expObjectID. If expObject is
wildcarded and expObjectID in the same row is not, the wild
portion of expObjectConditional must match the wildcarding
of the rest of the expression. If no object in the
expression is wildcarded but expObjectConditional is, use
the lexically first instance (if any) of
expObjectConditional.
If the value of expObjectConditional is 0.0 operation is
as if the value pointed to by expObjectConditional is a
non-zero (true) value.
Note that expObjectConditional can not trivially use an
object of syntax TruthValue, since the underlying value is
not 0 or 1. |