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Illustration of BPMN Loop Types
The document discusses three types of loops in BPMN: standard loops, multi-instance parallel loops, and multi-instance sequential loops. Standard loops repeat an activity as long as a loop condition is true. Multi-instance loops allow multiple instances of an activity to run simultaneously or sequentially. Attributes like isSequential and loopCardinality control the behavior of multi-instance loops.
Illustration of BPMN Loop Types
- 1. Illustration of BPMNLoop Types Standard Loop Multi Instance – Parallel Multi Instance – Sequential Max Tay, OCEB® Business Advanced, CBPP® © 2014 Max Tay, MaxConsilium Pty Ltd
- 2. BPMN Loops Loop is a characteristics, LoopCharacteristics, that can be applied to any activity. There are three types of loop in BPMN: ◦ Standard loop ◦ Multi instance parallel ◦ Multi instance sequential © 2014 Max Tay, MaxConsilium Pty Ltd
- 3. Attributes of StandardLoop Attribute Description loopCondition: boolean A flag to control the loop where the activity will loop as long as the flag is true. testBefore: boolean A flag to control whether the loop condition is evaluated at the beginning or at the end of the iteration. © 2014 Max Tay, MaxConsilium Pty Ltd loopMaximum: number (optional) A numeric cap can be optionally specified.
- 4. Standard Loop Call subprocess Sub process Do task testBefore: false © 2014 Max Tay, MaxConsilium Pty Ltd
- 5. Standard Loop Call subprocess Sub process Do task © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #1 testBefore: false
- 6. Standard Loop Call subprocess Sub process Do task © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #1 testBefore: false
- 7. Standard Loop Call subprocess Sub process Do task Loop condition is true © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #1 testBefore: false
- 8. Standard Loop Call subprocess Sub process Do task © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #2 testBefore: false
- 9. Standard Loop Call subprocess Sub process Do task © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #2 testBefore: false
- 10. Standard Loop Call subprocess Sub process Do task © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #2 testBefore: false Loop condition is true
- 11. Standard Loop Call subprocess Sub process Do task © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #3 testBefore: false
- 12. Standard Loop Call subprocess Sub process Do task © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #3 testBefore: false
- 13. Standard Loop Call subprocess Sub process Do task © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #3 testBefore: false Loop condition is false
- 14. Standard Loop Call subprocess Sub process Do task © 2014 Max Tay, MaxConsilium Pty Ltd Iteration #3 testBefore: false Loop condition is false
- 15. Attributes of MultiInstance Note: This is not a complete list of all the attributes for multi instance. Attribute Description isSequential: boolean A flag to control sequential or in parallel instances. loopCardinality: number This controls the number of instances that will be created. © 2014 Max Tay, MaxConsilium Pty Ltd loopDataInputRef: data input Specifies the collection of data, which will be used by the multi instances. Also controls the number of instances that will be created – one instance per item. loopDataOutputRef: data output Specifies the collection of data, which will be produced by the multi instances. inputDataItem: data input Represents data for each instance of the collection stored in the loopDataInput. Number of item depends on number of instance. outputDataItem: data output Represent sdata for each instance of the collection stored in the loopDataOutput. Number of item depends on number of instance.
- 16. Attributes of MultiInstance (cont’) Attribute Description © 2014 Max Tay, MaxConsilium Pty Ltd behavior: none / one / all / complex Specifies when events is thrown from an instance that is about to complete. • None – the event defined in the noneBehaviorEventRef will be thrown for each instance completed. • One – the event defined in the oneBehaviorEventRef will be thrown upon the first instance completed. • All – no event is thrown, a token is produced after completion of all instances. • Complex – the complexBehaviorDefinition is checked to determine if and which events to throw. noneBehaviorEventRef: event The event that is thrown when the behavior is set to None and an instance has completed. oneBehaviorEventRef: event The event that is thrown when the behavior is set to One and an instance has completed. complexBehaviorDefinition: Controls when and which events are thrown where behavior is set to Complex. completionCondition: expression Defines a boolean expression that when evaluated to true, cancels the remaining instances and produces a token.
- 17. Multi Instance –Parallel Call subprocess isSequential: false loopCardinality: 4 behavior: all © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess Do task
- 18. Multi Instance –Parallel Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: false loopCardinality: 4 behavior: all Do task Do task Do task Do task
- 19. Multi Instance –Parallel Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: false loopCardinality: 4 behavior: all Do task Do task Do task Do task
- 20. Multi Instance –Parallel Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: false loopCardinality: 4 behavior: all Do task Do task Do task Do task Waiting for all instances to complete
- 21. Multi Instance –Parallel Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: false loopCardinality: 4 behavior: all Do task Do task Do task Do task All instances completed
- 22. Multi Instance –Parallel Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: false loopCardinality: 4 behavior: all Do task Do task Do task Do task All instances completed
- 23. Multi Instance –Sequential Call subprocess isSequential: true loopCardinality: 4 behavior: all © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess Do task
- 24. Multi Instance –Sequential Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: true loopCardinality: 4 behavior: all Do task Do task Do task Do task
- 25. Multi Instance –Sequential Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: true loopCardinality: 4 behavior: all Do task Do task Do task Do task Waiting for all instances to complete
- 26. Multi Instance –Sequential Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: true loopCardinality: 4 behavior: all Do task Do task Do task Do task Waiting for all instances to complete
- 27. Multi Instance –Sequential Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: true loopCardinality: 4 behavior: all Do task Do task Do task Do task Waiting for all instances to complete
- 28. Multi Instance –Sequential Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: true loopCardinality: 4 behavior: all Do task Do task Do task Do task
- 29. Multi Instance –Sequential Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: true loopCardinality: 4 behavior: all Do task Do task Do task Do task All instances completed
- 30. Multi Instance –Sequential Call subprocess © 2014 Max Tay, MaxConsilium Pty Ltd Subprocess isSequential: true loopCardinality: 4 behavior: all Do task Do task Do task Do task All instances completed
- 31. © 2014 MaxTay, MaxConsilium Pty Ltd