io.prestosql.sql.planner.iterative.rule

Class PruneOutputColumns

java.lang.Object

io.prestosql.sql.planner.iterative.rule.PruneOutputColumns

All Implemented Interfaces:

Rule<OutputNode>

public class PruneOutputColumns
extends Object
implements Rule<OutputNode>

Nested Class Summary

Nested classes/interfaces inherited from interface io.prestosql.sql.planner.iterative.Rule

Rule.Context, Rule.Result

Constructor Summary

Constructors

Constructor and Description
PruneOutputColumns()

Method Summary

Modifier and Type	Method and Description
Rule.Result	apply(OutputNode outputNode, Captures captures, Rule.Context context)
Pattern<OutputNode>	getPattern() Returns a pattern to which plan nodes this rule applies.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.prestosql.sql.planner.iterative.Rule

isEnabled

Constructor Detail

PruneOutputColumns

public PruneOutputColumns()

Method Detail

getPattern

public Pattern<OutputNode> getPattern()

Description copied from interface: Rule

Returns a pattern to which plan nodes this rule applies.

Specified by:

getPattern in interface Rule<OutputNode>

apply

public Rule.Result apply(OutputNode outputNode,
                         Captures captures,
                         Rule.Context context)

Specified by:

apply in interface Rule<OutputNode>