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  1. camunda BPM
  2. CAM-13950

DMN table on decision instance view shows never-ending loading spinner




      Environment (Required on creation):

      • Tomcat + H2
      • 7.16.0-alpha5-ee
      • Chrome 93.0.4577.82 on macOS

      Description (Required on creation; please attach any relevant screenshots, stacktraces, log files, etc. to the ticket):

      • DMN table on decision instance view shows never-ending loading spinner
      • An error is shown in the browser console
        TypeError: Cannot read properties of undefined (reading 'appendChild')
      • See the screenshot below

      Steps to reproduce (Required on creation):

      1. Deploy a DMN decision with a DMN table to the engine
      2. Evaluate the decision
      3. In Cockpit, open the decision instance view

      Observed Behavior (Required on creation):

      • A never-ending loading spinner overlays the DMN Table.
      • An error is shown in the browser console.

      Expected behavior (Required on creation):

      • The loading spinner is hidden as soon as the DMN Table has been loaded.
      • No error is shown in the browser console.

      Root Cause (Required on prioritization):

      • The table is already rendered before the decision definition request returned and $scope.decisionDefinition
      • The decision-table directive is rendered with an empty table property
      • In the cam-widget-dmn-viewer directive we assume that a diagram is a DRD if $scope.table is falsy
        • This leads to calling $scope.initializeTablePlugins() even though the a DMN table diagram does not exist

      Solution Ideas (Optional):

      The cam-widget-dmn-viewer already registers a watcher if the table name is empty or undefined to open the diagram again if the table name changes [1]. However, we also need to skip calling the onLoad callback when the table name is empty.

      Hints (optional):

      [1] https://github.com/camunda/camunda-bpm-platform/blob/master/webapps/camunda-commons-ui/lib/widgets/dmn-viewer/cam-widget-dmn-viewer.js#L272-L296


        This is the controller panel for Smart Panels app


          Issue Links



                michael.schoettes Michael Schoettes
                tassilo.weidner Tassilo Weidner
                Tassilo Weidner Tassilo Weidner
                Martin Stamm Martin Stamm
                Michael Schoettes Michael Schoettes
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