924060929 commented on code in PR #10415:
URL: https://github.com/apache/doris/pull/10415#discussion_r910575894
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fe/fe-core/src/main/java/org/apache/doris/nereids/trees/TreeNode.java:
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@@ -46,4 +48,27 @@
NODE_TYPE withChildren(List<NODE_TYPE> children);
+ default void foreach(Consumer<TreeNode<NODE_TYPE>> func) {
Review Comment:
I think we have a promise: if the traverse function no order info, it must
be top-down implicitly
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