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, DirectedRelationship

Direct Subclasses:

Class Precedence List: Extend, NamedElement, DirectedRelationship, Relationship, Element

Properties:

condition : Constraint (0 1); -- source Extend
extendedCase : UseCase (1 1); -- source Extend

The UseCase that is being extended.
Subsets: DirectedRelationship.target

extension : UseCase (1 1); -- source Extend

The UseCase that represents the extension and owns the Extend relationship.
Subsets: DirectedRelationship.source, NamedElement.namespace
Opposite: UseCase.extend

extensionLocation : ExtensionPoint (1 *); -- source Extend
clientDependency : Dependency (0 *); -- source NamedElement
name : String (0 1); -- source NamedElement

The name of the NamedElement.

nameExpression : StringExpression (0 1); -- source NamedElement
namespace : Namespace (0 1); -- source NamedElement

Specifies the Namespace that owns the NamedElement.
{readonly}
Derived union with sources: (extension)
Subsets: Element.owner
Opposite: Namespace.ownedMember

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

Specifies the elements related by the Relationship.
{readonly}
Derived union with sources: (target, source, extension, extendedCase)

ownedComment : Comment (0 *); -- source Element
ownedElement : Element (0 *); -- source Element

The Elements owned by this Element.
{composite, readonly}
Derived union with sources: (ownedComment, nameExpression, condition)
Opposite: Element.owner

owner : Element (0 1); -- source Element

Constraints:

No additional constraints.

Operations:

No additional operations.

---

Send questions or comments to [email protected].