danny0405 commented on a change in pull request #1884:
URL: https://github.com/apache/calcite/pull/1884#discussion_r422745928
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File path: core/src/main/java/org/apache/calcite/plan/Convention.java
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@@ -66,6 +67,13 @@ default boolean
useAbstractConvertersForConversion(RelTraitSet fromTraits,
return false;
}
+ /**
+ * Return RelFactories struct for the convention which can be used to build
RelNode
+ */
+ default RelFactories.Struct getRelFactories() {
+ return RelFactories.DEFAULT_STRUCT;
+ }
Review comment:
That's not a big problem, a builder to `RelFactories ` works.
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