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Unable to create data flow run with nested data flows



Unable to create a data flow run when the UI has a different data flow as its primary source.

Error Messages

An StackOverFlowError will happen when evaluating pzDataFlowContainsEventStrategy when rule.
Problem during PRException.getRuleMessage: "Error occurred while executing forward chaining on page '.pyModelProcess.pyShapes(Source)', using rule: {pyClassName=Data-MO-DDF-Source, pxObjClass=Rule-Declare-Expressions, pyTargetProperty=.pyInputClass, pyPageContext=}"

Steps to Reproduce

  1. Create a data flow in class A with any source and a Convert shape that converts class A to class B with an abstract output.
  2. Create a data flow in class B that used the previously created data flow as the primary source with an abstract output.
  3. Use the DataFlow LP to create a run using this data flow as the source.

Root Cause

The pzDataFlowContainsEventStrategy function is recursive and may call itself to check the sub-data flow of the current data flow. However, it must filter out the cases where the sub-data flow is identical to the current data flow.


Apply HFix-39759

Published February 20, 2018 - Updated October 8, 2020

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