org.apache.calcite.rel.core

Class SetOp

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.SetOp

All Implemented Interfaces:

Cloneable, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.hint.Hintable, org.apache.calcite.rel.RelNode

Direct Known Subclasses:

Intersect, Minus, Union

public abstract class SetOp
extends org.apache.calcite.rel.AbstractRelNode
implements org.apache.calcite.rel.hint.Hintable

SetOp is an abstract base for relational set operators such as UNION, MINUS (aka EXCEPT), and INTERSECT.

Temporarily copy from calcite to cherry-pick [CALCITE-5107] and will be removed when upgrade the latest calcite.

Nested Class Summary

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

org.apache.calcite.rel.RelNode.Context

Field Summary

Fields

Modifier and Type	Field and Description
boolean	all
protected com.google.common.collect.ImmutableList<org.apache.calcite.rel.hint.RelHint>	hints
protected com.google.common.collect.ImmutableList<org.apache.calcite.rel.RelNode>	inputs
org.apache.calcite.sql.SqlKind	kind

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

digest, id, rowType, traitSet

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SetOp(org.apache.calcite.rel.RelInput input) Creates a SetOp by parsing serialized output.
protected	SetOp(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traits, List<org.apache.calcite.rel.hint.RelHint> hints, List<org.apache.calcite.rel.RelNode> inputs, org.apache.calcite.sql.SqlKind kind, boolean all) Creates a SetOp.
protected	SetOp(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traits, List<org.apache.calcite.rel.RelNode> inputs, org.apache.calcite.sql.SqlKind kind, boolean all) Creates a SetOp.

Method Summary

Modifier and Type	Method and Description
SetOp	copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs)
abstract SetOp	copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs, boolean all)
protected org.apache.calcite.rel.type.RelDataType	deriveRowType()
org.apache.calcite.rel.RelWriter	explainTerms(org.apache.calcite.rel.RelWriter pw)
com.google.common.collect.ImmutableList<org.apache.calcite.rel.hint.RelHint>	getHints()
List<org.apache.calcite.rel.RelNode>	getInputs()
boolean	isHomogeneous(boolean compareNames) Returns whether all the inputs of this set operator have the same row type as its output row.
void	replaceInput(int ordinalInParent, org.apache.calcite.rel.RelNode p)

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

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, deepEquals, deepHashCode, equals, estimateRowCount, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rel.hint.Hintable

attachHints, withHints

Methods inherited from interface org.apache.calcite.rel.RelNode

explain

Field Detail

inputs

protected com.google.common.collect.ImmutableList<org.apache.calcite.rel.RelNode> inputs

kind

public final org.apache.calcite.sql.SqlKind kind

all

public final boolean all

hints

protected final com.google.common.collect.ImmutableList<org.apache.calcite.rel.hint.RelHint> hints

Constructor Detail

SetOp

protected SetOp(org.apache.calcite.plan.RelOptCluster cluster,
                org.apache.calcite.plan.RelTraitSet traits,
                List<org.apache.calcite.rel.hint.RelHint> hints,
                List<org.apache.calcite.rel.RelNode> inputs,
                org.apache.calcite.sql.SqlKind kind,
                boolean all)

Creates a SetOp.

SetOp

protected SetOp(org.apache.calcite.plan.RelOptCluster cluster,
                org.apache.calcite.plan.RelTraitSet traits,
                List<org.apache.calcite.rel.RelNode> inputs,
                org.apache.calcite.sql.SqlKind kind,
                boolean all)

Creates a SetOp.

SetOp

protected SetOp(org.apache.calcite.rel.RelInput input)

Creates a SetOp by parsing serialized output.

Method Detail

copy

public abstract SetOp copy(org.apache.calcite.plan.RelTraitSet traitSet,
                           List<org.apache.calcite.rel.RelNode> inputs,
                           boolean all)

copy

public SetOp copy(org.apache.calcite.plan.RelTraitSet traitSet,
                  List<org.apache.calcite.rel.RelNode> inputs)

Specified by:

copy in interface org.apache.calcite.rel.RelNode

Overrides:

copy in class org.apache.calcite.rel.AbstractRelNode

replaceInput

public void replaceInput(int ordinalInParent,
                         org.apache.calcite.rel.RelNode p)

Specified by:

replaceInput in interface org.apache.calcite.rel.RelNode

Overrides:

replaceInput in class org.apache.calcite.rel.AbstractRelNode

getInputs

public List<org.apache.calcite.rel.RelNode> getInputs()

Specified by:

getInputs in interface org.apache.calcite.plan.RelOptNode

Specified by:

getInputs in interface org.apache.calcite.rel.RelNode

Overrides:

getInputs in class org.apache.calcite.rel.AbstractRelNode

explainTerms

public org.apache.calcite.rel.RelWriter explainTerms(org.apache.calcite.rel.RelWriter pw)

Overrides:

explainTerms in class org.apache.calcite.rel.AbstractRelNode

deriveRowType

protected org.apache.calcite.rel.type.RelDataType deriveRowType()

Overrides:

deriveRowType in class org.apache.calcite.rel.AbstractRelNode

isHomogeneous

public boolean isHomogeneous(boolean compareNames)

Returns whether all the inputs of this set operator have the same row type as its output row.

Parameters:

compareNames - Whether column names are important in the homogeneity comparison

Returns:

Whether all the inputs of this set operator have the same row type as its output row

getHints

public com.google.common.collect.ImmutableList<org.apache.calcite.rel.hint.RelHint> getHints()

Specified by:

getHints in interface org.apache.calcite.rel.hint.Hintable