polymorphic
Indicates an operation whose implementation (a method or state machine triggered by a call event) may be supplied by a descendant class. An operation that is not polymorphic is a leaf operation.
See also abstract operation, generalization, inheritance, method.
Semantics
If an operation is polymorphic, then a method may be supplied for it in a descendant class (whether or not a method has already been supplied in the original class). Otherwise, a method must be available for the operation in the class declaring the operation, and the method cannot be overridden in a descendant class. A method is available if it is declared by a class or inherited from an ancestor. An abstract operation must be polymorphic (because it has no direct ...
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