LoopNode with loopVariable - ADVANCED REFERENCE

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Tutorial

TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo

Section

01:04: UML Behavior: Activities quick start

Tags and keywords

Topic level

UML keywords

Activity Diagram

LoopNode::setupPart

LoopNode::bodyPart

LoopNode:decider

LoopNode::result

LoopNode::bodyOutput

LoopNode::isTestedFirst

LoopNode::loopVariable

LoopNode::loopVariableInput

Keywords

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Don't be too intimidated, it's not (quite) as complicated as it looks. We'll see next how to use it, including a simulation micro-video.

Up next

LoopNode: running loopVariable example

Notes

[CAVEAT] Cameo Simulation Toolkit 19SP3 DOES NOT support 'setupPart' in LoopNode (because fUML does not)

[TIP]{OPTION} Not every task in Activity Diagrams is well-suited to graphical modelling and LoopNode and ConditionalNode are notoriously fiddly to setup; consider using Action Language Helper (ALH) or Action Language for Foundational UML (Alf)

[ISSUE] UML-2.5.1 refers to 'isTestFirst' in 16.11.3.4 but to isTestedFirst in the attributes list for LoopNode under 16.14.30.4 Attributes

Snippets (quotes/extracts)

[UML-2.5.1] A LoopNode may also define a set of loopVariable OutputPins used to hold intermediate values during each loop iteration. These OutputPins may have outgoing ActivityEdges, in order to make the values they hold available within the test and bodyPart ...

[UML-2.5.1] If a LoopNode has loopVariable OutputPins, then it must also have matching sets of loopVariableInput InputPins, bodyOutput OutputPins (owned by Actions within the bodyPart), and result OutputPins.

[UML-2.5.1] When the LoopNode begins executing, the tokens on the loopVariableInput InputPins are moved to the corresponding loopVariable OutputPins before the first iteration of the loop.

[UML-2.5.1] After the completion of each execution of the bodyPart of the LoopNode, any remaining tokens on the loopVariable OutputPins are destroyed and tokens on the bodyOutput OutputPins are copied to the corresponding loopVariable OutputPins so that they are ...

[UML-2.5.1] Once the test fails and the loop is completed, the tokens on the bodyOutput OutputPins from the last iteration are moved to the result OutputPins and offered on any edges outgoing from those OutputPins.

[fUML-1.4] 7.11.2.7 LoopNode [1] fuml_loop_node_no_setup_part no setupParts in fUML self.setupPart->isEmpty()

Visit also

Visit also (backlinks)

TRAIL: SysMLv1/UML: Cameo Simulation Toolkit® (Magic Model Analyst®): Some absolute basics for beginners and some more advanced cases [with mini videos]

Related slides (includes other tutorials)

Related slides (backlinks, includes other tutorials)

StructuredActitivityNodes (structured actions) - ADVANCED REFERENCE ONLY

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