Class UML 2.3::Region
Description:
A region is an orthogonal part of either a composite state or a state machine.
It contains states and transitions.
Direct Superclasses: Namespace,
RedefinableElementDirect Subclasses: Class Precedence List: Region,
Namespace,
RedefinableElement,
NamedElement,
ElementProperties:
extendedRegion :
Region (0 1); -- source
Region redefinitionContext :
Classifier (1 1); -- source
Region state :
State (0 1); -- source
Region stateMachine :
StateMachine (0 1); -- source
Region subvertex :
Vertex (0 *); -- source
Region transition :
Transition (0 *); -- source
Region elementImport :
ElementImport (0 *); -- source
Namespace importedMember :
PackageableElement (0 *); -- source
Namespace member :
NamedElement (0 *); -- source
Namespace ownedMember :
NamedElement (0 *); -- source
Namespace ownedRule :
Constraint (0 *); -- source
Namespace packageImport :
PackageImport (0 *); -- source
Namespace isLeaf : Boolean (1 1); -- source
RedefinableElement redefinedElement :
RedefinableElement (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: shallow_history_vertex() : Boolean;
Description: A region can have at most one shallow history vertex
Expression: self.subvertex->select(v | v.oclIsKindOf(Pseudostate))->
select(p : Pseudostate | p.kind = #shallowHistory)->size() <= 1
Signature: owned() : Boolean;
Description: If a Region is owned by a StateMachine, then it cannot also be owned by
a State and vice versa.
Expression: (stateMachine->notEmpty() implies state->isEmpty()) and (state->notEmpty() implies stateMachine->isEmpty())
Signature: initial_vertex() : Boolean;
Description: A region can have at most one initial vertex
Expression: self.subvertex->select (v | v.oclIsKindOf(Pseudostate))->
select(p : Pseudostate | p.kind = #initial)->size() <= 1
Signature: deep_history_vertex() : Boolean;
Description: A region can have at most one deep history vertex
Expression: self.subvertex->select (v | v.oclIsKindOf(Pseudostate))->
select(p : Pseudostate | p.kind = #deepHistory)->size() <= 1
Operations:
Signature: redefinitionContext.1() : Classifier;
Description: The redefinition context of a region is the nearest containing statemachine
Expression: result = let sm = containingStateMachine() in
if sm.context->isEmpty() or sm.general->notEmpty() then
sm
else
sm.context
endif
Signature: isRedefinitionContextValid(redefined : Region; ) : Boolean;
Description: The query isRedefinitionContextValid() specifies whether the redefinition contexts of a region are properly related to the redefinition contexts of the specified region to allow this element to redefine the other. The containing statemachine/state of a redefining region must redefine the containing statemachine/state of the redefined region.
Expression: result = true
Signature: isConsistentWith(redefinee : RedefinableElement; ) : Boolean;
Description: The query isConsistentWith() specifies that a redefining region is consistent with a redefined region provided that the redefining region is an extension of the redefined region, i.e. it adds vertices and transitions and it redefines states and transitions of the redefined region.
Expression: result = true
Signature: containingStateMachine() : StateMachine;
Description: The operation containingStateMachine() returns the sate machine in which this Region is defined
Expression: result = if stateMachine->isEmpty()
then
state.containingStateMachine()
else
stateMachine
endif
Signature: belongsToPSM() : Boolean;
Description: The operation belongsToPSM () checks if the region belongs to a protocol state machine
The OCL used here is not normative.Editor's notes: missing endif endif
Expression: result = if not stateMachine->isEmpty() then
oclIsTypeOf(ProtocolStateMachine)
else if not state->isEmpty() then
state.container.belongsToPSM ()
else false endif
endif
Original: result = if not stateMachine->isEmpty() then
oclIsTypeOf(ProtocolStateMachine)
else if not state->isEmpty() then
state.container.belongsToPSM ()
else false
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