Ensure correct use of EffectivePredicateExtractor
Correct use is via `EffectivePredicateExtractor#extract` method.
@@ -82,6 +82,8 @@ public class EffectivePredicateExtractor
return new ComparisonExpression(ComparisonExpressionType.EQUAL, reference, expression);
};
+ private EffectivePredicateExtractor() {}
+
@Override
protected Expression visitPlan(PlanNode node, Void context)
{
