Mihai Budiu created CALCITE-7653:
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             Summary: ARRAY[NULL] produces uncompilable Java code
                 Key: CALCITE-7653
                 URL: https://issues.apache.org/jira/browse/CALCITE-7653
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.42.0
            Reporter: Mihai Budiu
            Assignee: Mihai Budiu


RexToLixTranslator implements the NULL value as a Void value in Java, which 
generates uncompilable code.

The generated code (passed to Janino) contains this fragment:
{code:java}
public Integer apply(Void root) {
  return (Integer) root;
} {code}



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