com.facebook.presto.sql.planner.iterative.rule

Class PruneTableScanColumns

java.lang.Object

com.facebook.presto.sql.planner.iterative.rule.ProjectOffPushDownRule<TableScanNode>

com.facebook.presto.sql.planner.iterative.rule.PruneTableScanColumns

All Implemented Interfaces:

Rule<ProjectNode>

public class PruneTableScanColumns
extends ProjectOffPushDownRule<TableScanNode>

Nested Class Summary

Nested classes/interfaces inherited from interface com.facebook.presto.sql.planner.iterative.Rule

Rule.Context, Rule.Result

Constructor Summary

Constructors

Constructor and Description
PruneTableScanColumns()

Method Summary

Modifier and Type	Method and Description
protected Optional<PlanNode>	pushDownProjectOff(PlanNodeIdAllocator idAllocator, PlanVariableAllocator variableAllocator, TableScanNode tableScanNode, Set<VariableReferenceExpression> referencedOutputs)

Methods inherited from class com.facebook.presto.sql.planner.iterative.rule.ProjectOffPushDownRule

apply, getPattern

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.facebook.presto.sql.planner.iterative.Rule

isEnabled

Constructor Detail

PruneTableScanColumns

public PruneTableScanColumns()

Method Detail

pushDownProjectOff

protected Optional<PlanNode> pushDownProjectOff(PlanNodeIdAllocator idAllocator,
                                                PlanVariableAllocator variableAllocator,
                                                TableScanNode tableScanNode,
                                                Set<VariableReferenceExpression> referencedOutputs)

Specified by:

pushDownProjectOff in class ProjectOffPushDownRule<TableScanNode>