Class UML 2.4.1::Operation
Description:
An operation is a behavioral feature of a classifier that specifies the name, type, parameters, and constraints for invoking an associated behavior.An operation may invoke both the execution of method behaviors as well as other behavioral responses.Operation specializes TemplateableElement in order to support specification of template operations and bound operations. Operation specializes ParameterableElement to specify that an operation can be exposed as a formal template parameter, and provided as an actual parameter in a binding of a template.Direct Superclasses: TemplateableElement, BehavioralFeature, ParameterableElementDirect Subclasses: Class Precedence List: Operation, TemplateableElement, BehavioralFeature, Namespace, Feature, RedefinableElement, NamedElement, ParameterableElement, ElementProperties:
bodyCondition : Constraint (0 1); -- source Operation class : Class (0 1); -- source Operation datatype : DataType (0 1); -- source Operation
interface : Interface (0 1); -- source OperationThe Interface that owns this Operation.Subsets: Feature.featuringClassifier, NamedElement.namespace, RedefinableElement.redefinitionContext
Opposite: Interface.ownedOperation
isOrdered : Boolean (1 1); -- source Operation isQuery : Boolean (1 1); -- source Operation isUnique : Boolean (1 1); -- source Operation lower : Integer (0 1); -- source Operation postcondition : Constraint (0 *); -- source Operation precondition : Constraint (0 *); -- source Operation redefinedOperation : Operation (0 *); -- source Operation templateParameter : OperationTemplateParameter (0 1); -- source Operation type : Type (0 1); -- source Operation upper : UnlimitedNatural (0 1); -- source Operation ownedTemplateSignature : TemplateSignature (0 1); -- source TemplateableElement templateBinding : TemplateBinding (0 *); -- source TemplateableElement concurrency : CallConcurrencyKind (1 1); -- source BehavioralFeature isAbstract : Boolean (1 1); -- source BehavioralFeature method : Behavior (0 *); -- source BehavioralFeature ownedParameter : Parameter (0 *); -- source BehavioralFeature ownedParameterSet : ParameterSet (0 *); -- source BehavioralFeature raisedException : Type (0 *); -- source BehavioralFeature 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 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 owningTemplateParameter : TemplateParameter (0 1); -- source ParameterableElement ownedComment : Comment (0 *); -- source Element ownedElement : Element (0 *); -- source Element owner : Element (0 1); -- source ElementConstraints:
Signature: CMOF_14_3_17a() : Boolean;Description: 14.3 [17] An Operation can have up to one Parameter whose direction is 'return'; furthermore, an Operation cannot have any ParameterSet per 12.4 [8].
Expression:
ownedParameter->select(direction = ParameterDirectionKind::return)->size() < 2 and
ownedParameterSet->isEmpty()Signature: CMOF_14_3_2() : Boolean;Description: 14.3 [2] The type of Operation::raisedException is limited to be Class rather than Type. see also: https://sites.google.com/site/metamodelingantipatterns/catalog/mof/operation-has-non-class-exception
Expression:
raisedException->forAll(e | e.oclIsTypeOf(Class))Signature: only_body_for_query() : Boolean;Description: A bodyCondition can only be specified for a query operation.
Expression:
bodyCondition->notEmpty() implies isQuerySignature: at_most_one_return() : Boolean;Description: An operation can have at most one return parameter; i.e., an owned parameter with the direction set to 'return'
Expression:
self.ownedParameter->select(par | par.direction = #return)->size() <= 1Operations:
Signature: upper.1() : UnlimitedNatural;Description: If this operation has a return parameter, upper equals the value of upper for that parameter. Otherwise upper is not defined.
Expression:
result = if returnResult()->notEmpty() then returnResult()->any().upper else Set{} endifSignature: type.1() : Type;Description: If this operation has a return parameter, type equals the value of type for that parameter. Otherwise type is not defined.
Expression:
result = if returnResult()->notEmpty() then returnResult()->any().type else Set{} endifSignature: returnResult() : Parameter;Description: The query returnResult() returns the set containing the return parameter of the Operation if one exists, otherwise, it returns an empty set
Expression:
result = ownedParameter->select (par | par.direction = #return)Signature: lower.1() : Integer;Description: If this operation has a return parameter, lower equals the value of lower for that parameter. Otherwise lower is not defined.
Expression:
result = if returnResult()->notEmpty() then returnResult()->any().lower else Set{} endifSignature: isUnique.1() : Boolean;Description: If this operation has a return parameter, isUnique equals the value of isUnique for that parameter. Otherwise isUnique is true.
Expression:
result = if returnResult()->notEmpty() then returnResult()->any().isUnique else true endifSignature: isOrdered.1() : Boolean;Description: If this operation has a return parameter, isOrdered equals the value of isOrdered for that parameter. Otherwise isOrdered is false.
Expression:
result = if returnResult()->notEmpty() then returnResult()->any().isOrdered else false endifSignature: isConsistentWith(redefinee : RedefinableElement; ) : Boolean;Description: A redefining operation is consistent with a redefined operation if it has the same number of owned parameters, and the type of each owned parameter conforms to the type of the corresponding redefined parameter. The query isConsistentWith() specifies, for any two Operations in a context in which redefinition is possible, whether redefinition would be consistent in the sense of maintaining type covariance. Other senses of consistency may be required, for example to determine consistency in the sense of contravariance. Users may define alternative queries under names different from 'isConsistentWith()', as for example, users may define a query named 'isContravariantWith()'.
The OCL used here is not normative.
Editor's notes: Needs investigation
Expression:
trueOriginal:
redefinee.isRedefinitionContextValid(self)
result = redefinee.oclIsKindOf(Operation) and let op : Operation = redefinee.oclAsType(Operation) in self.ownedParameter->size() = op.ownedParameter->size() and Sequence{1..self.ownedParameter->size()}-> forAll(i |op.ownedParameter->at(1).type.conformsTo(self.ownedParameter->at(i).type))Send questions or comments to [email protected].