Package io.trino.sql.planner.iterative.rule

Class PushTopNThroughProject

java.lang.Object

io.trino.sql.planner.iterative.rule.PushTopNThroughProject

All Implemented Interfaces:

Rule<TopNNode>

public final class PushTopNThroughProject
extends Object
implements Rule<TopNNode>

Transforms:

 - TopN
    - Project (non-identity)
       - Source other than Filter(TableScan) or TableScan
 

Into:

 - Project
    - TopN
       - Source
 

Nested Class Summary

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

Rule.Context, Rule.Result

Constructor Summary

Constructors

Constructor	Description
PushTopNThroughProject(TypeAnalyzer typeAnalyzer)

Method Summary

Modifier and Type	Method	Description
Rule.Result	apply(TopNNode parent, Captures captures, Rule.Context context)
Pattern<TopNNode>	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.trino.sql.planner.iterative.Rule

isEnabled

Constructor Details

PushTopNThroughProject

public PushTopNThroughProject(TypeAnalyzer typeAnalyzer)

Method Details

getPattern

public Pattern<TopNNode> getPattern()

Description copied from interface: Rule

Returns a pattern to which plan nodes this rule applies.

Specified by:

getPattern in interface Rule<TopNNode>

apply

public Rule.Result apply(TopNNode parent,
 Captures captures,
 Rule.Context context)

Specified by:

apply in interface Rule<TopNNode>