org.apache.calcite.rel.logical

Class LogicalExchange

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Exchange

org.apache.calcite.rel.logical.LogicalExchange

All Implemented Interfaces:

Cloneable, RelOptNode, RelNode

public final class LogicalExchange
extends Exchange

Sub-class of Exchange not targeted at any particular engine or calling convention.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.rel.RelNode

RelNode.Context

Field Summary

Fields inherited from class org.apache.calcite.rel.core.Exchange

distribution

Fields inherited from class org.apache.calcite.rel.SingleRel

input

Fields inherited from class org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

Constructor Summary

Constructors

Modifier	Constructor and Description
	LogicalExchange(RelInput input) Creates a LogicalExchange by parsing serialized output.
private	LogicalExchange(RelOptCluster cluster, RelTraitSet traitSet, RelNode input, RelDistribution distribution)

Method Summary

Modifier and Type	Method and Description
RelNode	accept(RelShuttle shuttle) Accepts a visit from a shuttle.
Exchange	copy(RelTraitSet traitSet, RelNode newInput, RelDistribution newDistribution)
static LogicalExchange	create(RelNode input, RelDistribution distribution) Creates a LogicalExchange.

Methods inherited from class org.apache.calcite.rel.core.Exchange

computeSelfCost, copy, explainTerms, getDistribution

Methods inherited from class org.apache.calcite.rel.SingleRel

childrenAccept, deriveRowType, estimateRowCount, getInput, getInputs, replaceInput

Methods inherited from class org.apache.calcite.rel.AbstractRelNode

accept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraitSet, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

LogicalExchange

private LogicalExchange(RelOptCluster cluster,
                        RelTraitSet traitSet,
                        RelNode input,
                        RelDistribution distribution)

LogicalExchange

public LogicalExchange(RelInput input)

Creates a LogicalExchange by parsing serialized output.

Method Detail

create

public static LogicalExchange create(RelNode input,
                                     RelDistribution distribution)

Creates a LogicalExchange.

Parameters:

input - Input relational expression

distribution - Distribution specification

copy

public Exchange copy(RelTraitSet traitSet,
                     RelNode newInput,
                     RelDistribution newDistribution)

Specified by:

copy in class Exchange

accept

public RelNode accept(RelShuttle shuttle)

Description copied from interface: RelNode

Accepts a visit from a shuttle.

Specified by:

accept in interface RelNode

Overrides:

accept in class AbstractRelNode

Parameters:

shuttle - Shuttle

Returns:

A copy of this node incorporating changes made by the shuttle to this node's children