unable to transform single decision table

[nhomble]

Expected Behavior

Expected to translate a decision table into a Java object.

Actual Behavior

The maven plugin errored with Name and variable cannot be null. Found 'Test Table' and 'null'

jDMN Version where this issue was observed

<groupId>com.goldmansachs.jdmn</groupId>
<artifactId>jdmn-maven-plugin</artifactId>
<version>8.2.1</version>

Steps to reproduce the behavior

Used the Camunda Modeler to create a DMN v8 table

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="https://www.omg.org/spec/DMN/20191111/MODEL/" xmlns:dmndi="https://www.omg.org/spec/DMN/20191111/DMNDI/" xmlns:dc="http://www.omg.org/spec/DMN/20180521/DC/" xmlns:modeler="http://camunda.org/schema/modeler/1.0" id="Definitions_02tdzst" name="DRD" namespace="http://camunda.org/schema/1.0/dmn">
  <decision id="Decision_1ox66vb" name="Test Table">
    <decisionTable id="DecisionTable_1b0rptv" hitPolicy="FIRST">
      <input id="Input_1" label="input number">
        <inputExpression id="InputExpression_1" typeRef="number">
          <text>n</text>
        </inputExpression>
      </input>
      <output id="Output_1" label="describe" name="output" typeRef="string" />
      <rule id="DecisionRule_1xms2ep">
        <inputEntry id="UnaryTests_0k9ck88">
          <text>&gt;= 1</text>
        </inputEntry>
        <outputEntry id="LiteralExpression_0yra77b">
          <text>"at least 1"</text>
        </outputEntry>
      </rule>
      <rule id="DecisionRule_0t51c5e">
        <inputEntry id="UnaryTests_1blk8bh">
          <text>&lt; 1</text>
        </inputEntry>
        <outputEntry id="LiteralExpression_0opa3o7">
          <text>"lt 1"</text>
        </outputEntry>
      </rule>
    </decisionTable>
  </decision>
  <dmndi:DMNDI>
    <dmndi:DMNDiagram>
      <dmndi:DMNShape dmnElementRef="Decision_1ox66vb">
        <dc:Bounds height="80" width="180" x="160" y="100" />
      </dmndi:DMNShape>
    </dmndi:DMNDiagram>
  </dmndi:DMNDI>
</definitions>

Specifically, the variable field on the TDecision object is never set

[opatrascoiu]

The variable field is a mandatory field and it should be populated. Please have a look at a few test cases in the TCK project https://github.com/dmn-tck/tck/tree/master/TestCases

[nhomble]

Sorry for the obvious issue, I was caught off guard by the lack of tck compliance in my editor.

For the sake of using our existing toolset, would this be a good use case for a custom DMNTransformer to add the missing variable node? In my case, the name of the table is the variable name.

[opatrascoiu]

We need the typeRef as well, this cannot be inferred all the time, e.g. for input data.