org.apache.calcite.rel.core

Class EquiJoin

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.BiRel

org.apache.calcite.rel.core.Join

org.apache.calcite.rel.core.EquiJoin

All Implemented Interfaces:

Cloneable, RelOptNode, RelNode

Direct Known Subclasses:

EnumerableJoin, EnumerableMergeJoin, EquiJoin, SemiJoin

public abstract class EquiJoin
extends Join

Base class for any join whose condition is based on column equality.

Field Summary

Fields

Modifier and Type	Field and Description
ImmutableIntList	leftKeys
ImmutableIntList	rightKeys

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

condition, joinType, variablesStopped

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

left, right

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

digest, id, rowType, traitSet

Constructor Summary

Constructors

Constructor and Description
EquiJoin(RelOptCluster cluster, RelTraitSet traits, RelNode left, RelNode right, RexNode condition, ImmutableIntList leftKeys, ImmutableIntList rightKeys, JoinRelType joinType, Set<String> variablesStopped) Creates an EquiJoin.

Method Summary

Methods

Modifier and Type	Method and Description
JoinInfo	analyzeCondition() Analyzes the join condition.
ImmutableIntList	getLeftKeys()
ImmutableIntList	getRightKeys()

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

accept, computeSelfCost, copy, copy, createJoinType, deriveJoinRowType, deriveRowType, estimateJoinedRows, explainTerms, getChildExps, getCondition, getJoinType, getRows, getSystemFieldList, getVariablesStopped, isSemiJoinDone, isValid_

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

childrenAccept, getInputs, getLeft, getRight, replaceInput

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

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

Methods inherited from class java.lang.Object

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

Field Detail

leftKeys

public final ImmutableIntList leftKeys

rightKeys

public final ImmutableIntList rightKeys

Constructor Detail

EquiJoin

public EquiJoin(RelOptCluster cluster,
        RelTraitSet traits,
        RelNode left,
        RelNode right,
        RexNode condition,
        ImmutableIntList leftKeys,
        ImmutableIntList rightKeys,
        JoinRelType joinType,
        Set<String> variablesStopped)

Creates an EquiJoin.

Method Detail

getLeftKeys

public ImmutableIntList getLeftKeys()

getRightKeys

public ImmutableIntList getRightKeys()

analyzeCondition

public JoinInfo analyzeCondition()

Description copied from class: Join

Analyzes the join condition.

Overrides:

analyzeCondition in class Join

Returns:

Analyzed join condition