Abstract Class UML 2.3::MultiplicityElement
Description:
A multiplicity is a definition of an inclusive interval of non-negative
integers beginning with a lower bound and ending with a (possibly infinite)
upper bound. A multiplicity element embeds this information to specify
the allowable cardinalities for an instantiation of this element.
Direct Superclasses: ElementDirect Subclasses: Variable,
StructuralFeature,
Pin,
Parameter,
ConnectorEndClass Precedence List: MultiplicityElement,
ElementProperties:
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 The specification of the upper bound for this multiplicity.
{
composite}
Subsets: Element.ownedElement
ownedComment :
Comment (0 *); -- source
Element ownedElement :
Element (0 *); -- source
Element owner :
Element (0 1); -- source
ElementConstraints:
Signature: CMOF_14_3_13() : Boolean;
Description: 14.3 [13] The values of MultiplicityElement::lowerValue and upperValue must be of kind LiteralInteger
and LiteralUnlimitedNatural respectively
see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/multiplicity-element-has-non-integer-lower-value
see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/multiplicity-element-has-non-unlimited-natural-upper-value
Expression: lowerValue.oclIsKindOf(LiteralInteger) and upperValue.oclIsKindOf(LiteralUnlimitedNatural)
Signature: value_specification_no_side_effects() : Boolean;
Description: If a non-literal ValueSpecification is used for the lower or upper bound,
then evaluating that specification must not have side effects.
Expression: true
Signature: value_specification_constant() : Boolean;
Description: If a non-literal ValueSpecification is used for the lower or upper bound,
then that specification must be a constant expression.
Expression: true
Signature: upper_ge_lower() : Boolean;
Description: The upper bound must be greater than or equal to the lower bound.
Expression: (upperBound()->notEmpty() and lowerBound()->notEmpty()) implies upperBound() >= lowerBound()
Signature: lower_ge_0() : Boolean;
Description: The lower bound must be a non-negative integer literal.
The OCL used here is not normative.Editor's notes: Rewrite was probably pointless. Needs examination.
Expression: not lowerBound().oclIsUndefined() implies lowerBound() >= 0
Original: lowerBound()->notEmpty() implies lowerBound() >= 0
Operations:
Signature: upperBound() : UnlimitedNatural;
Description: The query upperBound() returns the upper bound of the multiplicity for a bounded multiplicity as an unlimited natural.
The OCL used here is not normative.Editor's notes: Rewrite was probably pointless. Needs examination.
Expression: result = if upperValue.oclIsUndefined() then 1 else upperValue.unlimitedValue() endif
Original: result = if upperValue->isEmpty() then 1 else upperValue.unlimitedValue() endif
Signature: upper.1() : UnlimitedNatural;
Description: The derived upper attribute must equal the upperBound.
Expression: result = upperBound()
Signature: lowerBound() : Integer;
Description: The query lowerBound() returns the lower bound of the multiplicity as an integer.
Expression: result = if lowerValue->isEmpty() then 1 else lowerValue.integerValue() endif
Signature: lower.1() : Integer;
Description: The derived lower attribute must equal the lowerBound.
Expression: result = lowerBound()
Signature: isMultivalued() : Boolean;
Description: The query isMultivalued() checks whether this multiplicity has an upper bound greater than one.
Expression: result = upperBound() > 1
Signature: is(lowerbound : Integer; upperbound : Integer; ) : Boolean;
Description: The operation is determines if the upper and lower bound of the ranges are the ones given.
The OCL used here is not normative.Editor's notes: The names of the attributes are upper and lower, not upperbound and lowerbound.
Expression: result = (lowerbound = self.lower and upperbound = self.upper)
Original: result = (lowerbound = self.lowerbound and upperbound = self.upperbound)
Signature: includesMultiplicity(M : MultiplicityElement; ) : Boolean;
Description: The query includesMultiplicity() checks whether this multiplicity includes all the cardinalities allowed by the specified multiplicity.
Expression: result = (self.lowerBound() <= M.lowerBound()) and (self.upperBound() >= M.upperBound())
Signature: includesCardinality(C : Integer; ) : Boolean;
Description: The query includesCardinality() checks whether the specified cardinality is valid for this multiplicity.
Expression: result = (lowerBound() <= C) and (upperBound() >= C)
Signature: compatibleWith(other : MultiplicityElement; ) : Boolean;
Description: The operation compatibleWith takes another multiplicity as input. It checks if one multiplicity is compatible with another.
The OCL used here is not normative.Editor's notes: This is supposed to look at the population of Intergers in the model? They aren't boxed in my implementation.
Expression: Set{}
Original: result = Integer.allInstances()->forAll(i : Integer | self.includesCardinality(i) implies other.includesCardinality(i))
Send questions or comments to
[email protected].