yinzhijian commented on code in PR #10415:
URL: https://github.com/apache/doris/pull/10415#discussion_r910757341


##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/ExpressionConverter.java:
##########
@@ -44,19 +45,14 @@
  * Used to convert expression of new optimizer to stale expr.
  */
 @SuppressWarnings("rawtypes")
-public class ExpressionConverter extends ExpressionVisitor<Expr, 
PlanTranslatorContext> {
+public class ExpressionConverter extends DefaultExpressionVisitor<Expr, 
PlanTranslatorContext> {
 
     public static ExpressionConverter converter = new ExpressionConverter();
 
     public static Expr convert(Expression expression, PlanTranslatorContext 
planContext) {
         return converter.visit(expression, planContext);

Review Comment:
   ```suggestion
           return expression.accept(converter, planContext);
   ```



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