Class UML 2.5::Extend
Description:
A relationship from an extending UseCase to an extended UseCase that specifies
how and when the behavior defined in the extending UseCase can be inserted
into the behavior defined in the extended UseCase.
Direct Superclasses: NamedElement,
DirectedRelationshipDirect Subclasses: Class Precedence List: Extend,
NamedElement,
DirectedRelationship,
Relationship,
ElementProperties:
condition :
Constraint (0 1); -- source
Extend extendedCase :
UseCase (1 1); -- source
ExtendThe UseCase that is being extended.
Subsets: DirectedRelationship.target
extension :
UseCase (1 1); -- source
ExtendThe UseCase that represents the extension and owns the Extend relationship.
Subsets: DirectedRelationship.source, NamedElement.namespace
Opposite: UseCase.extend
extensionLocation :
ExtensionPoint (1 *); -- source
ExtendAn ordered list of ExtensionPoints belonging to the extended UseCase, specifying
where the respective behavioral fragments of the extending UseCase are
to be inserted. The first fragment in the extending UseCase is associated
with the first extension point in the list, the second fragment with the
second point, and so on. Note that, in most practical cases, the extending
UseCase has just a single behavior fragment, so that the list of ExtensionPoints
is trivial.
{
ordered}
clientDependency :
Dependency (0 *); -- source
NamedElement name : String (0 1); -- source
NamedElementThe name of the 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 source :
Element (1 *); -- source
DirectedRelationship target :
Element (1 *); -- source
DirectedRelationship relatedElement :
Element (1 *); -- source
Relationship ownedComment :
Comment (0 *); -- source
Element ownedElement :
Element (0 *); -- source
Element owner :
Element (0 1); -- source
ElementConstraints:
No additional constraints.
Operations:
No additional operations.
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