Uses of Class
org.apache.calcite.rel.core.SemiJoin

Packages that use SemiJoin

Package	Description
org.apache.calcite.adapter.enumerable	Query optimizer rules for Java calling convention.
org.apache.calcite.rel.core	Defines core relational expressions.
org.apache.calcite.rel.metadata	Defines metadata interfaces and utilities for relational expressions.
org.apache.calcite.rel.rules	Provides a core set of planner rules.

Uses of SemiJoin in org.apache.calcite.adapter.enumerable

Subclasses of SemiJoin in org.apache.calcite.adapter.enumerable

Modifier and Type	Class and Description
class	EnumerableSemiJoin Implementation of SemiJoin in enumerable calling convention.

Methods in org.apache.calcite.adapter.enumerable that return SemiJoin

Modifier and Type	Method and Description
SemiJoin	EnumerableSemiJoin.copy(RelTraitSet traitSet, RexNode condition, RelNode left, RelNode right, JoinRelType joinType, boolean semiJoinDone)

Uses of SemiJoin in org.apache.calcite.rel.core

Methods in org.apache.calcite.rel.core that return SemiJoin

Modifier and Type	Method and Description
SemiJoin	SemiJoin.copy(RelTraitSet traitSet, RexNode condition, RelNode left, RelNode right, JoinRelType joinType, boolean semiJoinDone)
static SemiJoin	SemiJoin.create(RelNode left, RelNode right, RexNode condition, ImmutableIntList leftKeys, ImmutableIntList rightKeys) Creates a SemiJoin.

Uses of SemiJoin in org.apache.calcite.rel.metadata

Methods in org.apache.calcite.rel.metadata with parameters of type SemiJoin

Modifier and Type	Method and Description
Boolean	RelMdColumnUniqueness.areColumnsUnique(SemiJoin rel, RelMetadataQuery mq, ImmutableBitSet columns, boolean ignoreNulls)
List<Double>	RelMdSize.averageColumnSizes(SemiJoin rel, RelMetadataQuery mq)
static double	RelMdUtil.computeSemiJoinSelectivity(RelMetadataQuery mq, RelNode factRel, RelNode dimRel, SemiJoin rel) Computes the selectivity of a semijoin filter if it is applied on a fact table.
static double	RelMdUtil.computeSemiJoinSelectivity(RelMetadataQuery mq, SemiJoin rel) Computes the selectivity of a semijoin filter if it is applied on a fact table.
Double	RelMdDistinctRowCount.getDistinctRowCount(SemiJoin rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
com.google.common.collect.Multimap<Class<? extends RelNode>,RelNode>	RelMdNodeTypes.getNodeTypes(SemiJoin rel, RelMetadataQuery mq)
Double	RelMdPopulationSize.getPopulationSize(SemiJoin rel, RelMetadataQuery mq, ImmutableBitSet groupKey)
RelOptPredicateList	RelMdPredicates.getPredicates(SemiJoin semiJoin, RelMetadataQuery mq) Infers predicates for a SemiJoin.
Double	RelMdRowCount.getRowCount(SemiJoin rel, RelMetadataQuery mq)
Double	RelMdSelectivity.getSelectivity(SemiJoin rel, RelMetadataQuery mq, RexNode predicate)
Set<ImmutableBitSet>	RelMdUniqueKeys.getUniqueKeys(SemiJoin rel, RelMetadataQuery mq, boolean ignoreNulls)
static RexNode	RelMdUtil.makeSemiJoinSelectivityRexNode(RelMetadataQuery mq, SemiJoin rel) Creates a RexNode that stores a selectivity value corresponding to the selectivity of a semijoin.

Uses of SemiJoin in org.apache.calcite.rel.rules

Fields in org.apache.calcite.rel.rules declared as SemiJoin

Modifier and Type	Field and Description
(package private) SemiJoin[]	LoptMultiJoin.joinRemovalSemiJoins The semijoins that allow the join of a dimension table to be removed

Fields in org.apache.calcite.rel.rules with type parameters of type SemiJoin

Modifier and Type	Field and Description
private Map<Integer,Map<Integer,SemiJoin>>	LoptSemiJoinOptimizer.possibleSemiJoins Associates potential semijoins with each fact table factor.

Methods in org.apache.calcite.rel.rules that return SemiJoin

Modifier and Type	Method and Description
private SemiJoin	LoptSemiJoinOptimizer.findSemiJoinIndexByCost(LoptMultiJoin multiJoin, List<RexNode> joinFilters, int factIdx, int dimIdx) Given a list of possible filters on a fact table, determine if there is an index that can be used, provided all the fact table keys originate from the same underlying table.
SemiJoin	LoptMultiJoin.getJoinRemovalSemiJoin(int dimIdx)

Methods in org.apache.calcite.rel.rules with parameters of type SemiJoin

Modifier and Type	Method and Description
private RexNode	SemiJoinProjectTransposeRule.adjustCondition(LogicalProject project, SemiJoin semiJoin) Pulls the project above the semijoin and returns the resulting semijoin condition.
private double	LoptSemiJoinOptimizer.computeScore(RelNode factRel, RelNode dimRel, SemiJoin semiJoin) Computes a score relevant to applying a set of semijoins on a fact table.
private void	LoptSemiJoinOptimizer.removeJoin(LoptMultiJoin multiJoin, SemiJoin semiJoin, int factIdx, int dimIdx) Determines whether a join of the dimension table in a semijoin can be removed.
void	LoptMultiJoin.setJoinRemovalSemiJoin(int dimIdx, SemiJoin semiJoin) Indicates the semijoin that allows the join of a dimension table to be removed

Method parameters in org.apache.calcite.rel.rules with type arguments of type SemiJoin

Modifier and Type	Method and Description
private void	LoptSemiJoinOptimizer.removePossibleSemiJoin(Map<Integer,SemiJoin> possibleDimensions, Integer factIdx, Integer dimIdx) Removes a dimension table from a fact table's list of possible semijoins