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  1. camunda BPM
  2. CAM-12910 Integrate Scala DMN Engine
  3. CAM-12925

In Process Engine, I can restore the legacy behavior

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Details

    • Sub-task
    • Resolution: Unresolved
    • L3 - Default
    • None
    • None
    • scala-dmn
    • None

    Description

      AT

      In the Process Engine, I can restore the DMN legacy behavior to keep my current DMN models as-is.

      Scope

      • Minimum: legacy mode can be turned on for all DMN models or none
      • Maximum: legacy mode can be turned on/off per DMN model

      Implementation outline

      • Different factories for different versions of the engine (Legacy & Scala)
      • Flag for enabling legacy behavior to generate the legacy engine or Scala engine
      • DecisionInvocation uses the DmnEngine from the config
      • ProcessEngineConfigurationImpl#initDmnEngine should look for a flag for legacy behavior and initialize the corresponding engine
      • Maximum Scope
        • Gradual update of single models could be achieved by
          • Register two DMN deployers (legacy and Scala) that receive the deployment unit and need to decide based on the config if they parse the DMN deployment or not
          • Allow to configure which models to parse as legacy by either
            • Provide an engine config option with a list of DMN model keys that should be parsed as legacy OR
            • Allow to define a marker in the respective models to be parsed as legacy or not
          • Get the right engine for the model by either
            • introduce new getter in engine config “getDmnEngineByKey” that receives the engine respecting the DMN model key OR
            • change the current getter “getDmnEngine” to require a key parameter so people notice right away something changed in that behavior (it is private API)

      See
      https://docs.google.com/document/d/1fvp2qf75W7VBSFjfHVz3iRN4Ynq349R6qtq3eP62opw/edit#bookmark=id.w7tx54oviqyj

      mgm-controller-panel

        This is the controller panel for Smart Panels app

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                Unassigned Unassigned
                tobias.metzke Tobias Metzke-Bernstein
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                Dates

                  Created:
                  Updated:

                  Salesforce