Aaaaaaron commented on a change in pull request #2143:
URL: https://github.com/apache/calcite/pull/2143#discussion_r487622205
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File path: core/src/main/java/org/apache/calcite/rel/RelNode.java
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@@ -222,6 +223,22 @@
*/
void explain(RelWriter pw);
+ /**
+ * 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 classes implementing this interface
+ * do not override this method.
+ *
+ * @return Relational expression string of this {@code RelNode}
+ */
+ default String explain() {
+ return RelOptUtil.toString(this);
Review comment:
RelOptUtil#dumpPlan can dump other formats like XML/JSON, we don't need
this here.
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