QueryHintsResolver (Flink : 2.0-SNAPSHOT API)

java.lang.Object
- org.apache.calcite.rel.RelShuttleImpl
- - org.apache.flink.table.planner.hint.QueryHintsRelShuttle
  - - org.apache.flink.table.planner.plan.optimize.QueryHintsResolver

All Implemented Interfaces:

org.apache.calcite.rel.RelShuttle
```
public class QueryHintsResolver
extends QueryHintsRelShuttle
```
Resolve and validate the query hints.
Note: duplicate query hints are not checked here.
For KV hints such as state ttl hints and lookup join hints, they will be merged. If the keys with same hint name conflict, only the first value is chosen.
For LIST hints such as regular join hints, they will all be retained.

- Field Summary
  - Fields inherited from class org.apache.calcite.rel.RelShuttleImpl
    stack
- Constructor Summary
  
  Constructors
  Constructor Description
  
  QueryHintsResolver()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method 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
- QueryHintsResolver
```
public QueryHintsResolver()
```

Method Detail

doVisit

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

Specified by:: doVisit in class QueryHintsRelShuttle