Package 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, Hintable, RelNode

Direct Known Subclasses:

EquiJoin

@Deprecated
public abstract class EquiJoin
extends Join

Deprecated.

This class is no longer needed; if you are writing a sub-class of Join that only accepts equi conditions, it is sufficient that it extends Join. It will be evident that it is an equi-join when its JoinInfo.nonEquiConditions is an empty list.

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

For most of the cases, JoinInfo.isEqui() can already decide if the join condition is based on column equality.

EquiJoin is an abstract class for inheritance of Calcite enumerable joins and join implementation of other system. You should inherit the EquiJoin if your join implementation does not support non-equi join conditions. Calcite would eliminate some optimize logic for EquiJoin in some planning rules. e.g. FilterJoinRule would not push non-equi join conditions of the above filter into the join underneath if it is an EquiJoin.

Nested Class Summary

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

RelNode.Context

Field Summary

Fields

Modifier and Type	Field	Description
final ImmutableIntList	leftKeys	Deprecated.
final ImmutableIntList	rightKeys	Deprecated.

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

condition, hints, joinInfo, joinType, variablesSet

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

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

Method Summary

Modifier and Type	Method	Description
ImmutableIntList	getLeftKeys()	Deprecated.
ImmutableIntList	getRightKeys()	Deprecated.

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

accept, analyzeCondition, computeSelfCost, copy, copy, createJoinType, deepEquals0, deepHashCode0, deriveJoinRowType, deriveRowType, estimateJoinedRows, estimateRowCount, explainTerms, getCondition, getHints, getJoinType, getSystemFieldList, getVariablesSet, isSemiJoin, 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, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, hashCode, isEnforcer, 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, fieldIsNullable, stripped

Field Details

leftKeys

public final ImmutableIntList leftKeys

Deprecated.

rightKeys

public final ImmutableIntList rightKeys

Deprecated.

Constructor Details

EquiJoin

protected EquiJoin(RelOptCluster cluster,
 RelTraitSet traits,
 RelNode left,
 RelNode right,
 RexNode condition,
 Set<CorrelationId> variablesSet,
 JoinRelType joinType)

Deprecated.

Creates an EquiJoin.

EquiJoin

@Deprecated
protected EquiJoin(RelOptCluster cluster,
 RelTraitSet traits,
 RelNode left,
 RelNode right,
 RexNode condition,
 ImmutableIntList leftKeys,
 ImmutableIntList rightKeys,
 Set<CorrelationId> variablesSet,
 JoinRelType joinType)

Deprecated.

Creates an EquiJoin.

EquiJoin

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

Deprecated.

Method Details

getLeftKeys

public ImmutableIntList getLeftKeys()

Deprecated.

getRightKeys

public ImmutableIntList getRightKeys()

Deprecated.