Description
Current behavior:
- For a multi-instance activity with a collection expression and an element variable, the collection expression is invoked n + 1 times. Once to determine the number of iterations, and n times to determine the element variable value for every iteration
- It is possible to use the execution as a variable in the collection expression, e.g. ${myBean.resolveCollection(execution)}.
- for the invocations that determine the element variable, the execution is not in a state that the DelegateExecution interface provides. For example, the method #getCurrentActivityId returns null
Expected behavior:
- All methods in the DelegateExecution interface can be used when resolving a collection expression
Failing test case: https://github.com/camunda/camunda-bpm-platform/commit/8d7a4e06b33da9730865b3dded147e968119a0d0
Solution ideas:
1. Invoke collection expression only once and store the collection somewhere to iterate over it (e.g. next to the multi-instance variables). Downside: collections must be serializable
2. Make sure the executions are properly initialized before the collection expression is invoked
mgm-controller-panel
This is the controller panel for Smart Panels app
Attachments
Issue Links
- is related to
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CAM-7304 Multi instance collection expression is evaluated multiple times
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- Open
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- links to
