com.facebook.presto.spi.plan

Class ProjectNode

java.lang.Object

com.facebook.presto.spi.plan.PlanNode

com.facebook.presto.spi.plan.ProjectNode

@Immutable
public final class ProjectNode
extends PlanNode

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ProjectNode.Locality

Constructor Summary

Constructors

Constructor and Description
ProjectNode(Optional<SourceLocation> sourceLocation, PlanNodeId id, Optional<PlanNode> statsEquivalentPlanNode, PlanNode source, Assignments assignments, ProjectNode.Locality locality)
ProjectNode(Optional<SourceLocation> sourceLocation, PlanNodeId id, PlanNode source, Assignments assignments, ProjectNode.Locality locality)
ProjectNode(PlanNodeId id, PlanNode source, Assignments assignments)

Method Summary

Modifier and Type	Method and Description
<R,C> R	accept(PlanVisitor<R,C> visitor, C context) A visitor pattern interface to operate on IR.
PlanNode	assignStatsEquivalentPlanNode(Optional<PlanNode> statsEquivalentPlanNode) Assigns statsEquivalentPlanNode to the plan node
LogicalProperties	computeLogicalProperties(LogicalPropertiesProvider logicalPropertiesProvider) Logical properties are a function of source properties and the operation performed by the plan node
boolean	equals(Object o)
Assignments	getAssignments()
ProjectNode.Locality	getLocality()
List<VariableReferenceExpression>	getOutputVariables() The output from the upstream PlanNodes.
PlanNode	getSource()
List<PlanNode>	getSources() Get the upstream PlanNodes (i.e., children) of the current PlanNode.
int	hashCode()
PlanNode	replaceChildren(List<PlanNode> newChildren) Alter the upstream PlanNodes of the current PlanNode.

Methods inherited from class com.facebook.presto.spi.plan.PlanNode

getId, getSourceLocation, getStatsEquivalentPlanNode

Methods inherited from class java.lang.Object

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

Constructor Detail

ProjectNode

public ProjectNode(PlanNodeId id,
                   PlanNode source,
                   Assignments assignments)

ProjectNode

public ProjectNode(Optional<SourceLocation> sourceLocation,
                   PlanNodeId id,
                   PlanNode source,
                   Assignments assignments,
                   ProjectNode.Locality locality)

ProjectNode

public ProjectNode(Optional<SourceLocation> sourceLocation,
                   PlanNodeId id,
                   Optional<PlanNode> statsEquivalentPlanNode,
                   PlanNode source,
                   Assignments assignments,
                   ProjectNode.Locality locality)

Method Detail

getOutputVariables

public List<VariableReferenceExpression> getOutputVariables()

Description copied from class: PlanNode

The output from the upstream PlanNodes. It should serve as the input for the current PlanNode.

Specified by:

getOutputVariables in class PlanNode

getAssignments

public Assignments getAssignments()

getSources

public List<PlanNode> getSources()

Description copied from class: PlanNode

Get the upstream PlanNodes (i.e., children) of the current PlanNode.

Specified by:

getSources in class PlanNode

getSource

public PlanNode getSource()

getLocality

public ProjectNode.Locality getLocality()

accept

public <R,C> R accept(PlanVisitor<R,C> visitor,
                      C context)

Description copied from class: PlanNode

A visitor pattern interface to operate on IR.

Overrides:

accept in class PlanNode

assignStatsEquivalentPlanNode

public PlanNode assignStatsEquivalentPlanNode(Optional<PlanNode> statsEquivalentPlanNode)

Description copied from class: PlanNode

Assigns statsEquivalentPlanNode to the plan node

Specified by:

assignStatsEquivalentPlanNode in class PlanNode

replaceChildren

public PlanNode replaceChildren(List<PlanNode> newChildren)

Description copied from class: PlanNode

Alter the upstream PlanNodes of the current PlanNode.

Specified by:

replaceChildren in class PlanNode

computeLogicalProperties

public LogicalProperties computeLogicalProperties(LogicalPropertiesProvider logicalPropertiesProvider)

Description copied from class: PlanNode

Logical properties are a function of source properties and the operation performed by the plan node

Overrides:

computeLogicalProperties in class PlanNode

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object