ihuzenko commented on a change in pull request #1945: DRILL-7502: Invalid
codegen for typeof() with UNION
URL: https://github.com/apache/drill/pull/1945#discussion_r362884952
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/expr/EvaluationVisitor.java
##########
@@ -146,6 +135,19 @@ public boolean equals(Object obj) {
Stack<Map<ExpressionHolder,HoldingContainer>> mapStack = new Stack<>();
+ public EvaluationVisitor() { }
+
+ public HoldingContainer addExpr(LogicalExpression e, ClassGenerator<?>
generator) {
+
Review comment:
```suggestion
```
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