Class UML 2.3::DurationObservation

Description:

A duration observation is a reference to a duration during an execution. It points out the element(s) in the model to observe and whether the observations are when this model element is entered or when it is exited.

Direct Superclasses: Observation

Direct Subclasses:

Class Precedence List: DurationObservation, Observation, PackageableElement, ParameterableElement, NamedElement, Element

Properties:

event : NamedElement (1 2); -- source DurationObservation
firstEvent : Boolean (0 2); -- source DurationObservation
visibility : VisibilityKind (1 1); -- source PackageableElement
owningTemplateParameter : TemplateParameter (0 1); -- source ParameterableElement

The formal template parameter that owns this element.
Subsets: Element.owner, ParameterableElement.templateParameter
Opposite: TemplateParameter.ownedParameteredElement

templateParameter : TemplateParameter (0 1); -- source ParameterableElement
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

A name which allows the NamedElement to be identified within a hierarchy of nested Namespaces. It is constructed from the names of the containing namespaces starting at the root of the hierarchy and ending with the name of the NamedElement itself.
{readonly, derived}

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

The Comments owned by this element.
{composite}
Subsets: Element.ownedElement

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

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

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

Constraints:

Signature: first_event_multiplicity() : Boolean;
Description: The multiplicity of firstEvent must be 2 if the multiplicity of event is 2. Otherwise the multiplicity of firstEvent is 0.
The OCL used here is not normative.
Editor's notes: Added endif.
Expression: if (event->size() = 2) then (firstEvent->size() = 2) else (firstEvent->size() = 0) endif
Original: if (event->size() = 2) then (firstEvent->size() = 2) else (firstEvent->size() = 0)

Operations:

No additional operations.

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