jcamachor commented on a change in pull request #2349:
URL: https://github.com/apache/calcite/pull/2349#discussion_r644129961
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File path: core/src/main/java/org/apache/calcite/rel/core/JoinRelType.java
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@@ -152,4 +152,29 @@ public JoinRelType cancelNullsOnRight() {
public boolean projectsRight() {
return this != SEMI && this != ANTI;
}
+
+ /** Returns whether this join type accepts pushing predicates from above
into its predicate. */
+ public boolean canPushIntoFromAbove() {
+ return (this == INNER) || (this == SEMI);
+ }
+
+ /** Returns whether this join type accepts pushing predicates from above
into its left input. */
+ public boolean canPushLeftFromAbove() {
+ return (this == INNER) || (this == LEFT) || (this == SEMI) || (this ==
ANTI);
+ }
+
+ /** Returns whether this join type accepts pushing predicates from above
into its right input. */
+ public boolean canPushRightFromAbove() {
+ return (this == INNER) || (this == RIGHT);
+ }
+
+ /** Returns whether this join type accepts pushing predicates from within
into its left input. */
+ public boolean canPushLeftFromWithin() {
+ return (this == INNER) || (this == RIGHT) || (this == SEMI);
+ }
+
+ /** Returns whether this join type accepts pushing predicates from within
into its right input. */
+ public boolean canPushRightFromWithin() {
+ return (this == INNER) || (this == LEFT) || (this == SEMI);
+ }
Review comment:
Added the experimental annotation.
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