org.apache.calcite.rel.hint

Class NodeTypeHintPredicate

java.lang.Object

org.apache.calcite.rel.hint.NodeTypeHintPredicate

All Implemented Interfaces:

HintPredicate

public class NodeTypeHintPredicate
extends Object
implements HintPredicate

A hint predicate that specifies which kind of relational expression the hint can be applied to.

Constructor Summary

Constructors

Constructor and Description
NodeTypeHintPredicate(org.apache.calcite.rel.hint.NodeTypeHintPredicate.NodeType nodeType)

Method Summary

Modifier and Type	Method and Description
boolean	apply(RelHint hint, RelNode rel) Decides if the given hint can be applied to the relational expression rel.

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeTypeHintPredicate

public NodeTypeHintPredicate(org.apache.calcite.rel.hint.NodeTypeHintPredicate.NodeType nodeType)

Method Detail

apply

public boolean apply(RelHint hint,
                     RelNode rel)

Description copied from interface: HintPredicate

Decides if the given hint can be applied to the relational expression rel.

Specified by:

apply in interface HintPredicate

Parameters:

hint - The hint

rel - The relational expression

Returns:

True if the hint can be applied to the rel