ExternalCallAction models the invocation of a service specified in a required interface. Therefore, it references a Role, from which the providing component can be derived, and a Signature to specify the called service. ExternalCallActions model synchronous calls to required services, i.e., the caller waits until the called service finishes execution before continuing execution itself. The PCM allows modelling asynchronous calls to required services by using an ExternalCallAction inside a ForkedBehaviour.
ExternalCallActions do not have resource demands by themselves. Component developers need to specify the resource demand of the called service in the RDSEFF of that service. The resource demand can also be calculated by analysing the providing component. This keeps the RDSEFF specification of different component developers independent from each other and makes them replaceable in an architectural model.
ExternalCallActions may contain two sets of VariableUsages specifying input parameter characterisations and output parameter characterisations respectively. VariableUsages for input parameters may only reference IN or INOUT parameters of the call’s referenced signature. The random variable characterisation inside such a VariableUsage may be constants, probability distribution functions, or include a stochastic expression involving for example arithmetic operations. The latter models a dependency between the current service’s own input parameters and the input parameters of the required service.

Attribute
<<variationPoint>> <Class> Operation	calledService
<Class> InterfacePort	calledInterfacePort

!!TableHeading.InheritedAttributes!! seff::AbstractAction

predecessor_AbstractAction,  successor_AbstractAction

!!TableHeading.InheritedAttributes!! samm::core::Entity

documentation

!!TableHeading.InheritedAttributes!! samm::core::NamedEntity

name

!!TableHeading.InheritedAttributes!! identifier::Identifier

id

!!TableHeading.InheritedOperations!! seff::AbstractAction

!!TableHeading.InheritedOperations!! samm::core::Entity

!!TableHeading.InheritedOperations!! samm::core::NamedEntity

!!TableHeading.InheritedOperations!! identifier::Identifier

 calledInterfacePort

Public <Class> InterfacePort calledInterfacePort

Eigenschaften:

Aggregation	None
Alias
Association	<Association> A_calledInterfacePort_externalCallAction
Association End
Class	<Class> ExternalCallAction
Datatype
Default
Default Value
Is Composite	false
Is Derived	false
Is Derived Union	false
Is Leaf	false
Is Ordered	false
Is Read Only	false
Is Static	false
Is Unique	true
Keywords
Lower	1
Lower Value	<Literal Integer> 1
Multiplicity	1
Name	calledInterfacePort
Name Expression
Namespace	<Class> ExternalCallAction
Opposite
Owned Template Signature
Owner	<Class> ExternalCallAction
Owning Association
Owning Template Parameter
Qualified Name	seff::ExternalCallAction::calledInterfacePort
Stereotype
Template Parameter
Type	<Class> InterfacePort
Upper	1
Upper Value	<Literal Unlimited Natural> 1
Visibility	Public

 calledService

Public <<variationPoint>> <Class> Operation calledService

Eigenschaften:

Aggregation	None
Alias
Association	<Association> A_calledService_externalCallAction
Association End
Class	<Class> ExternalCallAction
Datatype
Default
Default Value
Is Composite	false
Is Derived	false
Is Derived Union	false
Is Leaf	false
Is Ordered	false
Is Read Only	false
Is Static	false
Is Unique	true
Keywords
Lower	1
Lower Value
Multiplicity	1
Name	calledService
Name Expression
Namespace	<Class> ExternalCallAction
Opposite
Owned Template Signature
Owner	<Class> ExternalCallAction
Owning Association
Owning Template Parameter
Qualified Name	seff::ExternalCallAction::calledService
Stereotype
Template Parameter
Type	<<variationPoint>> <Class> Operation
Upper	1
Upper Value
Visibility	Public