Aaaaaaron commented on a change in pull request #2143:
URL: https://github.com/apache/calcite/pull/2143#discussion_r487387680
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File path: core/src/main/java/org/apache/calcite/rel/RelNode.java
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@@ -232,6 +233,21 @@
*/
RelNode onRegister(RelOptPlanner planner);
+ /**
+ * Returns a relational expression string of this {@code RelNode}.
+ * The string returned is the same as
+ * {@link RelOptUtil#toString(org.apache.calcite.rel.RelNode)}.
+ *
+ * This method is intended mainly for use while debugging in an IDE,
+ * as a convenient short-hand for RelOptUtil.toString.
+ * We recommend that sub-classes do not override this method.
+ *
+ * @return Relational expression string of this {@code RelNode}
+ */
+ default String explain() {
Review comment:
@rubenada Thanks for your advice, indeed better!
##########
File path: core/src/main/java/org/apache/calcite/rel/RelNode.java
##########
@@ -232,6 +233,21 @@
*/
RelNode onRegister(RelOptPlanner planner);
+ /**
+ * Returns a relational expression string of this {@code RelNode}.
+ * The string returned is the same as
+ * {@link RelOptUtil#toString(org.apache.calcite.rel.RelNode)}.
+ *
+ * This method is intended mainly for use while debugging in an IDE,
+ * as a convenient short-hand for RelOptUtil.toString.
+ * We recommend that sub-classes do not override this method.
+ *
+ * @return Relational expression string of this {@code RelNode}
+ */
+ default String explain() {
Review comment:
revised
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