xndai commented on a change in pull request #1860: [CALCITE-2970] Add
abstractConverter only between derived and required traitset
URL: https://github.com/apache/calcite/pull/1860#discussion_r400556857
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File path: core/src/main/java/org/apache/calcite/plan/Convention.java
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@@ -59,8 +61,10 @@
* @param toTraits Target traits
* @return Whether we should add converters
*/
- boolean useAbstractConvertersForConversion(RelTraitSet fromTraits,
- RelTraitSet toTraits);
+ default boolean useAbstractConvertersForConversion(RelTraitSet fromTraits,
+ RelTraitSet toTraits) {
+ return true;
Review comment:
Why do we want to change the base method?
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