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Class UML 2.3::Property

Description:

Property specializes ParameterableElement to specify that a property can be exposed as a formal template parameter, and provided as an actual parameter in a binding of a template.

Direct Superclasses: StructuralFeature, DeploymentTarget, ConnectableElement

Direct Subclasses: Port, ExtensionEnd

Class Precedence List: Property, StructuralFeature, MultiplicityElement, DeploymentTarget, ConnectableElement, ParameterableElement, TypedElement, Feature, RedefinableElement, NamedElement, Element

Properties:

aggregation : AggregationKind (1 1); -- source Property
association : Association (0 1); -- source Property
associationEnd : Property (0 1); -- source Property
class : Class (0 1); -- source Property
datatype : DataType (0 1); -- source Property
default : String (0 1); -- source Property
defaultValue : ValueSpecification (0 1); -- source Property
interface : Interface (0 1); -- source Property
isComposite : Boolean (1 1); -- source Property
isDerived : Boolean (1 1); -- source Property
isDerivedUnion : Boolean (1 1); -- source Property
isReadOnly : Boolean (1 1); -- source Property
opposite : Property (0 1); -- source Property
owningAssociation : Association (0 1); -- source Property
qualifier : Property (0 *); -- source Property
redefinedProperty : Property (0 *); -- source Property
subsettedProperty : Property (0 *); -- source Property
isOrdered : Boolean (1 1); -- source MultiplicityElement
isUnique : Boolean (1 1); -- source MultiplicityElement
lower : Integer (0 1); -- source MultiplicityElement
lowerValue : ValueSpecification (0 1); -- source MultiplicityElement
upper : UnlimitedNatural (0 1); -- source MultiplicityElement
upperValue : ValueSpecification (0 1); -- source MultiplicityElement
deployedElement : PackageableElement (0 *); -- source DeploymentTarget
deployment : Deployment (0 *); -- source DeploymentTarget
end : ConnectorEnd (0 *); -- source ConnectableElement
templateParameter : ConnectableElementTemplateParameter (0 1); -- source ConnectableElement
owningTemplateParameter : TemplateParameter (0 1); -- source ParameterableElement
type : Type (0 1); -- source TypedElement
featuringClassifier : Classifier (0 *); -- source Feature
isStatic : Boolean (1 1); -- source Feature
isLeaf : Boolean (1 1); -- source RedefinableElement
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 Element

Constraints:

Signature: CMOF_14_3_27() : Boolean;
Description: 14.3 [27] A Property typed by a kind of DataType must have aggregation = none.
Expression: type.oclIsKindOf(DataType) implies aggregation = AggregationKind::none

Signature: CMOF_14_3_26() : Boolean;
Description: 14.3 [26] A composite subsetting Property with mandatory multiplicity cannot subset another composite Property with mandatory multiplicity.
Expression: isComposite and lowerBound() = 1 implies subsettedProperty->forAll(not (isComposite and lowerBound() = 1))

Signature: CMOF_14_3_25b() : Boolean;
Description: 14.3 [25] For a TypedElement that is a kind of Parameter or Property typed by an PrimitiveType, the defaultValue, if any, must be a kind of LiteralSpecification. see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/typed-element-is-primitive-with-non-literal-default
Expression: type.oclIsKindOf(PrimitiveType) and defaultValue->notEmpty() implies defaultValue.oclIsKindOf(LiteralSpecification)

Signature: CMOF_14_3_24b() : Boolean;
Description: 14.3 [24] For a TypedElement that is a kind of Parameter or Property typed by an Enumeration, the defaultValue, if any, must be a kind of InstanceValue. see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/typed-element-is-enumeration-with-non-instance-value-default
Expression: type.oclIsKindOf(Enumeration) and defaultValue->notEmpty() implies defaultValue.oclIsKindOf(InstanceValue)

Signature: CMOF_14_3_23b() : Boolean;
Description: 14.3 [23] A TypedElement that is a kind of Parameter or Property typed by a Class cannot have a default value. see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/typed-element-is-complex-with-default-value
Expression: type.oclIsKindOf(Class) implies defaultValue->isEmpty()

Signature: CMOF_14_3_16() : Boolean;
Description: 14.3 [16] Property::aggregation must be either 'none' or 'composite' see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/property-has-shared-aggregation
Expression: aggregation = AggregationKind::composite or aggregation = AggregationKind::none

Signature: CMOF_14_3_12d() : Boolean;
Description: 14.3 [12] A multi-valued Property or Parameter cannot have a default value. The default value of a Property or Parameter typed by a PrimitiveType must be a kind of LiteralSpecification. The default value of a Property or Parameter typed by an Enumeration must be a kind of InstanceValue. A Property or Parameter typed by a Class cannot have a default value. see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/parameter-has-invalid-default-value see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/property-has-invalid-default-value
Expression: defaultValue->notEmpty() implies (upperBound() <= 1 and ((type.oclIsKindOf(PrimitiveType) and defaultValue.oclIsKindOf(LiteralSpecification)) or (type.oclIsKindOf(Enumeration) and defaultValue.oclIsKindOf(InstanceValue))))

Signature: CMOF_14_3_12c() : Boolean;
Description: 14.3 [12] A multi-valued Property or Parameter cannot have a default value. The default value of a Property or Parameter typed by a PrimitiveType must be a kind of LiteralSpecification. The default value of a Property or Parameter typed by an Enumeration must be a kind of InstanceValue. A Property or Parameter typed by a Class cannot have a default value. see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/parameter-has-invalid-default-value see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/property-has-invalid-default-value
Expression: (upperBound() > 1 or type.oclIsKindOf(Class) implies defaultValue->isEmpty())

Signature: CMOF_14_3_10b() : Boolean;
Description: see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/property-has-qualifier
Expression: qualifier->isEmpty()

Signature: subsetting_rules() : Boolean;
Description: A subsetting property may strengthen the type of the subsetted property, and its upper bound may be less.
Expression: self.subsettedProperty->forAll(sp | self.type.conformsTo(sp.type) and ((self.upperBound()->notEmpty() and sp.upperBound()->notEmpty()) implies self.upperBound()<=sp.upperBound() ))

Signature: subsetting_context_conforms() : Boolean;
Description: Subsetting may only occur when the context of the subsetting property conforms to the context of the subsetted property.
The OCL used here is not normative.
Editor's notes: subsettingContext commented out, thus this cannot be used.
Expression: true
Original: self.subsettedProperty->notEmpty() implies (self.subsettingContext()->notEmpty() and self.subsettingContext()->forAll (sc | self.subsettedProperty->forAll(sp | sp.subsettingContext()->exists(c | sc.conformsTo(c)))))

Signature: subsetted_property_names() : Boolean;
Description: A property may not subset a property with the same name.
Expression: true

Signature: redefined_property_inherited() : Boolean;
Description: A redefined property must be inherited from a more general classifier containing the redefining property.
The OCL used here is not normative.
Editor's notes: Use implies, not if...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: true
Original: if (redefinedProperty->notEmpty()) then (redefinitionContext->notEmpty() and redefinedProperty->forAll(rp| ((redefinitionContext-> collect(fc| fc.allParents()))->asSet())->collect(c| c.allFeatures())->asSet()->includes(rp))

Signature: navigable_readonly() : Boolean;
Description: Only a navigable property can be marked as readOnly.
The OCL used here is not normative.
Editor's notes: isNavigable is commented out. Thus this cannot be used.
Expression: true
Original: isReadOnly implies self.isNavigable()

Signature: multiplicity_of_composite() : Boolean;
Description: A multiplicity on an aggregate end of a composite aggregation must not have an upper bound greater than 1.
The OCL used here is not normative.
Editor's notes: Rewrite supplied by Maged Elaasar, 2011-05-11
Expression: self.isComposite and self.association->notEmpty() implies let opposite = self.association.memberEnd->any(e|e<>self) in opposite.upperBound() <= 1
Original: isComposite implies (upperBound()->isEmpty() or upperBound() <= 1)

Signature: derived_union_is_read_only() : Boolean;
Description: A derived union is read only.
Expression: isDerivedUnion implies isReadOnly

Signature: derived_union_is_derived() : Boolean;
Description: A derived union is derived.
Expression: isDerivedUnion implies isDerived

Signature: deployment_target() : Boolean;
Description: A Property can be a DeploymentTarget if it is a kind of Node and functions as a part in the internal structure of an encompassing Node.
Expression: true

Signature: binding_to_attribute() : Boolean;
Description: A binding of a property template parameter representing an attribute must be to an attribute.
Editor's notes: templateParameterSubstitution not defined.
Expression: true

Operations:

Signature: subsettingContext() : Type;
Description: The query subsettingContext() gives the context for subsetting a property. It consists, in the case of an attribute, of the corresponding classifier, and in the case of an association end, all of the classifiers at the other ends.
The OCL used here is not normative.
Editor's notes: classifier not defined.
Expression: Set{}
Original: result = if association->notEmpty() then association.endType-type else if classifier->notEmpty() then Set{classifier} else Set{} endif endif

Signature: opposite.1() : Property;
Description: If this property is owned by a class, associated with a binary association, and the other end of the association is also owned by a class, then opposite gives the other end.
The OCL used here is not normative.
Editor's notes: excluding() not -. Added additional 'AND association->notEmpty()' to cut off case where self.association is empty.
Expression: result = if owningAssociation->isEmpty() and association->notEmpty() and association.memberEnd->size() = 2 then let otherEnd = (association.memberEnd->excluding(self))->any() in if otherEnd.owningAssociation->isEmpty() then otherEnd else Set{} endif else Set {} endif
Original: result = if owningAssociation->isEmpty() and association.memberEnd->size() = 2 then let otherEnd = (association.memberEnd - self)->any() in if otherEnd.owningAssociation->isEmpty() then otherEnd else Set{} endif else Set {} endif

Signature: isNavigable() : Boolean;
Description: The query isNavigable() indicates whether it is possible to navigate across the property.
Expression: result = not classifier->isEmpty() or association.owningAssociation.navigableOwnedEnd->includes(self)

Signature: isConsistentWith(redefinee : RedefinableElement; ) : Boolean;
Description: The query isConsistentWith() specifies, for any two Properties in a context in which redefinition is possible, whether redefinition would be logically consistent. A redefining property is consistent with a redefined property if the type of the redefining property conforms to the type of the redefined property, the multiplicity of the redefining property (if specified) is contained in the multiplicity of the redefined property, and the redefining property is derived if the redefined property is derived.
The OCL used here is not normative.
Editor's notes: Term testing upper bound needs to reference upperBound() not lowerBound().
Expression: result = redefinee.oclIsKindOf(Property) and let prop : Property = redefinee.oclAsType(Property) in (prop.type.conformsTo(self.type) and ((prop.lowerBound()->notEmpty() and self.lowerBound()->notEmpty()) implies prop.lowerBound() >= self.lowerBound()) and ((prop.upperBound()->notEmpty() and self.upperBound()->notEmpty()) implies prop.upperBound() <= self.upperBound()) and (self.isDerived implies prop.isDerived) and (self.isComposite implies prop.isComposite))
Original: result = redefinee.oclIsKindOf(Property) and let prop : Property = redefinee.oclAsType(Property) in (prop.type.conformsTo(self.type) and ((prop.lowerBound()->notEmpty() and self.lowerBound()->notEmpty()) implies prop.lowerBound() >= self.lowerBound()) and ((prop.upperBound()->notEmpty() and self.upperBound()->notEmpty()) implies prop.lowerBound() <= self.lowerBound()) and (self.isDerived implies prop.isDerived) and (self.isComposite implies prop.isComposite))

Signature: isComposite.1() : Boolean;
Description: The value of isComposite is true only if aggregation is composite.
Expression: result = (self.aggregation = #composite)

Signature: isCompatibleWith(p : ParameterableElement; ) : Boolean;
Description: The query isCompatibleWith() determines if this parameterable element is compatible with the specified parameterable element. By default parameterable element P is compatible with parameterable element Q if the kind of P is the same or a subtype as the kind of Q. In addition, for properties, the type must be conformant with the type of the specified parameterable element.
Expression: result = p->oclIsKindOf(self.oclType()) and self.type.conformsTo(p.oclAsType(TypedElement).type)

Signature: isAttribute(p : Property; ) : Boolean;
Description: The query isAttribute() is true if the Property is defined as an attribute of some classifier.
The OCL used here is not normative.
Editor's notes: allInstances() not allInstances
Expression: result = Classifier.allInstances()->exists(c | c.attribute->includes(p))
Original: result = Classifier.allInstances->exists(c | c.attribute->includes(p))


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