How to test

• Open KOGITO-3660.dmn file using https://sandbox.kie.org/
• Open 'My Decision' node
• Set the expression as: Decision table
  • Firstly using old boxed expression editor
  • Secondly using new boxed expression editor

Currently just the old boxed expression editor will generate Price and Color columns automatically

Acceptance criteria

• simple custom type (tMyString : string)
• complex custom type (tCar : {Color : string, Price: number})

• recursive custom type (tHuman : {Name : string, Parent: tHuman}) KOGITO-5452

Implementation Details

For the old boxed expression editor, we have a class https://github.com/kiegroup/kogito-tooling/blob/main/packages/stunner-editors/kie-wb-common-dmn/kie-wb-common-dmn-client/src/main/java/org/kie/workbench/common/dmn/client/editors/expressions/types/dtable/DecisionTableEditorDefinitionEnricher.java that it is dynamically creating input and output clauses based on connected input/decision nodes. This part is triggered when the user selects the Decision Table as a logic type, and it is completely missing in the new Boxed Expression Editor.
We have two possible approaches:

1. Rewrite all the logic held in DecisionTableEditorDefinitionEnricher inside the React component (ideal but expensive solution).
2. Call DecisionTableEditorDefinitionEnricher when the user is the new boxed expression editor and selects the "Decision Table" as logic type.

We agreed to follow approach #2.