org.apache.flink.table.planner.hint

Class ClearQueryHintsWithInvalidPropagationShuttle

java.lang.Object

org.apache.calcite.rel.RelShuttleImpl

org.apache.flink.table.planner.hint.QueryHintsRelShuttle

org.apache.flink.table.planner.hint.ClearQueryHintsWithInvalidPropagationShuttle

All Implemented Interfaces:

org.apache.calcite.rel.RelShuttle

public class ClearQueryHintsWithInvalidPropagationShuttle
extends QueryHintsRelShuttle

Due to Calcite will expand the whole SQL RelNode tree that contains query block, query hints (including join hints and state ttl hints) will be propagated from root to leaves in the whole RelNode tree. This shuttle is used to clear the query hints that are propagated into the query block incorrectly.

See more at SqlToRelConverter.convertFrom(SqlToRelConverter.Blackboard, SqlNode, List).

Field Summary

Fields inherited from class org.apache.calcite.rel.RelShuttleImpl

stack

Constructor Summary

Constructors

Constructor and Description
ClearQueryHintsWithInvalidPropagationShuttle()

Method Summary

Modifier and Type	Method and Description
protected org.apache.calcite.rel.RelNode	doVisit(org.apache.calcite.rel.RelNode node)

Methods inherited from class org.apache.flink.table.planner.hint.QueryHintsRelShuttle

visit, visit, visit, visit, visit

Methods inherited from class org.apache.calcite.rel.RelShuttleImpl

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visitChild, visitChildren

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClearQueryHintsWithInvalidPropagationShuttle

public ClearQueryHintsWithInvalidPropagationShuttle()

Method Detail

doVisit

protected org.apache.calcite.rel.RelNode doVisit(org.apache.calcite.rel.RelNode node)

Specified by:

doVisit in class QueryHintsRelShuttle