Abstract Class UML 2.3::RedefinableElement
Description:
A redefinable element is an element that, when defined in the context of
a classifier, can be redefined more specifically or differently in the
context of another classifier that specializes (directly or indirectly)
the context classifier.
Direct Superclasses: NamedElementDirect Subclasses: Transition,
State,
Region,
RedefinableTemplateSignature,
Feature,
ExtensionPoint,
Classifier,
ActivityNode,
ActivityEdgeClass Precedence List: RedefinableElement,
NamedElement,
ElementProperties:
isLeaf : Boolean (1 1); -- source
RedefinableElement Indicates whether it is possible to further redefine a RedefinableElement.
If the value is true, then it is not possible to further redefine the RedefinableElement.
Note that this property is preserved through package merge operations;
that is, the capability to redefine a RedefinableElement (i.e., isLeaf=false)
must be preserved in the resulting RedefinableElement of a package merge
operation where a RedefinableElement with isLeaf=false is merged with a
matching RedefinableElement with isLeaf=true: the resulting RedefinableElement
will have isLeaf=false. Default value is false.
Default value: FALSE
redefinedElement :
RedefinableElement (0 *); -- source
RedefinableElement redefinitionContext :
Classifier (0 *); -- source
RedefinableElement clientDependency :
Dependency (0 *); -- source
NamedElement name : String (0 1); -- source
NamedElement nameExpression :
StringExpression (0 1); -- source
NamedElement namespace :
Namespace (0 1); -- source
NamedElement qualifiedName : String (0 1); -- source
NamedElement visibility :
VisibilityKind (0 1); -- source
NamedElement ownedComment :
Comment (0 *); -- source
Element ownedElement :
Element (0 *); -- source
Element owner :
Element (0 1); -- source
ElementConstraints:
Signature: redefinition_context_valid() : Boolean;
Description: At least one of the redefinition contexts of the redefining element must
be a specialization of at least one of the redefinition contexts for each
redefined element.
Expression: self.redefinedElement->forAll(e | self.isRedefinitionContextValid(e))
Signature: redefinition_consistent() : Boolean;
Description: A redefining element must be consistent with each redefined element.
Expression: self.redefinedElement->forAll(re | re.isConsistentWith(self))
Signature: non_leaf_redefinition() : Boolean;
Description: A redefinable element can only redefine non-leaf redefinable elements
Expression: self.redefinedElement->forAll(not isLeaf)
Operations:
Signature: isRedefinitionContextValid(redefined : RedefinableElement; ) : Boolean;
Description: The query isRedefinitionContextValid() specifies whether the redefinition contexts of this RedefinableElement are properly related to the redefinition contexts of the specified RedefinableElement to allow this element to redefine the other. By default at least one of the redefinition contexts of this element must be a specialization of at least one of the redefinition contexts of the specified element.
The OCL used here is not normative.Editor's notes: Use intersection/notEmpty, not includes. Removed extra close paren...MIWG: Replaced the body with TRUE, since it appears that redefinitionContext is a derived union with no subsetting properties. -- Carried over from UML 2.1.1
Expression: result = true
Original: result = redefinitionContext->exists(c | c.allParents()->includes(redefined.redefinitionContext)))
Signature: isConsistentWith(redefinee : RedefinableElement; ) : Boolean;
Description: The query isConsistentWith() specifies, for any two RedefinableElements in a context in which redefinition is possible, whether redefinition would be logically consistent. By default, this is false; this operation must be overridden for subclasses of RedefinableElement to define the consistency conditions.
Expression: result = false
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