io.prestosql.sql.planner.plan

Class SetOperationNode

java.lang.Object

io.prestosql.sql.planner.plan.PlanNode

io.prestosql.sql.planner.plan.SetOperationNode

Direct Known Subclasses:

ExceptNode, IntersectNode, UnionNode

@Immutable
public abstract class SetOperationNode
extends PlanNode

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SetOperationNode(PlanNodeId id, List<PlanNode> sources, com.google.common.collect.ListMultimap<Symbol,Symbol> outputToInputs, List<Symbol> outputs)

Method Summary

Modifier and Type	Method and Description
List<Symbol>	getOutputSymbols()
List<PlanNode>	getSources()
com.google.common.collect.ListMultimap<Symbol,Symbol>	getSymbolMapping()
com.google.common.collect.Multimap<Symbol,SymbolReference>	outputSymbolMap(int sourceIndex) Returns the input to output symbol mapping for the given source channel.
List<Symbol>	sourceOutputLayout(int sourceIndex)
Map<Symbol,SymbolReference>	sourceSymbolMap(int sourceIndex) Returns the output to input symbol mapping for the given source channel

Methods inherited from class io.prestosql.sql.planner.plan.PlanNode

accept, getId, replaceChildren

Methods inherited from class java.lang.Object

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

Constructor Detail

SetOperationNode

protected SetOperationNode(PlanNodeId id,
                           List<PlanNode> sources,
                           com.google.common.collect.ListMultimap<Symbol,Symbol> outputToInputs,
                           List<Symbol> outputs)

Method Detail

getSources

public List<PlanNode> getSources()

Specified by:

getSources in class PlanNode

getOutputSymbols

public List<Symbol> getOutputSymbols()

Specified by:

getOutputSymbols in class PlanNode

getSymbolMapping

public com.google.common.collect.ListMultimap<Symbol,Symbol> getSymbolMapping()

sourceOutputLayout

public List<Symbol> sourceOutputLayout(int sourceIndex)

sourceSymbolMap

public Map<Symbol,SymbolReference> sourceSymbolMap(int sourceIndex)

Returns the output to input symbol mapping for the given source channel

outputSymbolMap

public com.google.common.collect.Multimap<Symbol,SymbolReference> outputSymbolMap(int sourceIndex)

Returns the input to output symbol mapping for the given source channel. A single input symbol can map to multiple output symbols, thus requiring a Multimap.