zero_input_parameters If the DecisionNode has no decisionInputFlow and an incoming ControlFlow, then any decisionInput Behavior has no in parameters.

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TIP/GOTCHA: SysMLv1/UML: Cameo Simulation Toolkit: If you use a «decisionInputFlow» to a DecisionNode you MUST also have a ControlFlow to the DecisionNode; if you don't use an explicit «decisionInputFlow» you don't need the "extra" ControlFlow
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Source
Unified Modeling Language 2.5.1
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About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes
Snippet kind
CONSTRAINT
UML keywords
DecisionNode
DecisionNode::decisionInputFlow
ControlFlow
DecisionNode::decisionInput
Behavior
Parameter
ParameterDirectionKind::in
ActivityNode::incoming
Behavior::ownedParameter
Behavior::inputParameters()
Full quote
zero_input_parameters

If the DecisionNode has no decisionInputFlow and an incoming ControlFlow, then any decisionInput Behavior has no in parameters.


       inv: (decisionInput<>null and decisionInputFlow=null and incoming-
       >exists(oclIsKindOf(ControlFlow))) implies
          decisionInput.inputParameters()->isEmpty()
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Related snippets
A DecisionNode is a ControlNode that chooses between outgoing ActivityEdges for the routing of tokens.
decisionInput : Behavior [0..1] ... A Behavior that is executed to provide an input to guard ValueSpecifications on ActivityEdges outgoing from the DecisionNode.
Related snippets (backlinks)
incoming_control_one_input_parameter If the DecisionNode has a decisionInputFlow and an incoming ControlFlow, then any decisionInput Behavior has one in Parameter ...
A decisionInput Behavior has no out parameters, no inout parameters, and one return parameter.
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