zabetak commented on a change in pull request #1157: [CALCITE-2969] Improve
design of join-like relational expressions
URL: https://github.com/apache/calcite/pull/1157#discussion_r285269949
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File path:
core/src/main/java/org/apache/calcite/rel/rules/SemiJoinProjectTransposeRule.java
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@@ -63,42 +63,35 @@
*/
private SemiJoinProjectTransposeRule(RelBuilderFactory relBuilderFactory) {
super(
- operand(SemiJoin.class,
+ operandJ(LogicalJoin.class, null, Join::isSemiJoin,
Review comment:
I mostly agree but since `SemiJoin` has a public constructor and factory we
cannot be really sure how people are using it. I'm not saying not change it,
I'm just a bit defensive and think that a short notice does not harm anybody.
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