hsyuan commented on a change in pull request #1451: [CALCITE-3334] Refinement
for Substitution-Based MV Matching
URL: https://github.com/apache/calcite/pull/1451#discussion_r338183919
##########
File path: core/src/main/java/org/apache/calcite/plan/SubstitutionVisitor.java
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@@ -997,233 +1022,520 @@ public UnifyResult apply(UnifyRuleCall call) {
}
}
- /** Implementation of {@link UnifyRule} that matches
- * {@link org.apache.calcite.rel.core.TableScan}. */
- private static class ScanToProjectUnifyRule extends AbstractUnifyRule {
- public static final ScanToProjectUnifyRule INSTANCE =
- new ScanToProjectUnifyRule();
+ /**
+ * A {@link SubstitutionVisitor.UnifyRule} that matches a
+ * {@link MutableScan} to a {@link MutableCalc} which has {@link
MutableScan} as child.
Review comment:
break line
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