org.apache.calcite.rel.rules

Class AggregateJoinTransposeRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.rel.rules.AggregateJoinTransposeRule

public class AggregateJoinTransposeRule
extends RelOptRule

Planner rule that pushes an Aggregate past a Join.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	AggregateJoinTransposeRule.Side Work space for an input to a join.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	allowFunctions
static AggregateJoinTransposeRule	EXTENDED Extended instance of the rule that can push down aggregate functions.
static AggregateJoinTransposeRule	INSTANCE

Fields inherited from class org.apache.calcite.plan.RelOptRule

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor and Description
AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass, Class<? extends Join> joinClass, RelBuilderFactory relBuilderFactory, boolean allowFunctions) Creates an AggregateJoinTransposeRule.
AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass, RelFactories.AggregateFactory aggregateFactory, Class<? extends Join> joinClass, RelFactories.JoinFactory joinFactory) Deprecated.
AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass, RelFactories.AggregateFactory aggregateFactory, Class<? extends Join> joinClass, RelFactories.JoinFactory joinFactory, boolean allowFunctions) Deprecated.
AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass, RelFactories.AggregateFactory aggregateFactory, Class<? extends Join> joinClass, RelFactories.JoinFactory joinFactory, RelFactories.ProjectFactory projectFactory) Deprecated.
AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass, RelFactories.AggregateFactory aggregateFactory, Class<? extends Join> joinClass, RelFactories.JoinFactory joinFactory, RelFactories.ProjectFactory projectFactory, boolean allowFunctions) Deprecated.

Method Summary

Modifier and Type	Method and Description
private static ImmutableBitSet	keyColumns(ImmutableBitSet aggregateColumns, com.google.common.collect.ImmutableList<RexNode> predicates) Computes the closure of a set of columns according to a given list of constraints.
void	onMatch(RelOptRuleCall call) Receives notification about a rule match.
private static void	populateEquivalence(Map<Integer,BitSet> equivalence, int i0, int i1)
private static void	populateEquivalences(Map<Integer,BitSet> equivalence, RexNode predicate)
private static <E> SqlSplittableAggFunction.Registry<E>	registry(List<E> list) Creates a SqlSplittableAggFunction.Registry that is a view of a list.

Methods inherited from class org.apache.calcite.plan.RelOptRule

any, convert, convert, convertList, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, none, operand, operand, operand, operand, operand, some, toString, unordered

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final AggregateJoinTransposeRule INSTANCE

EXTENDED

public static final AggregateJoinTransposeRule EXTENDED

Extended instance of the rule that can push down aggregate functions.

allowFunctions

private final boolean allowFunctions

Constructor Detail

AggregateJoinTransposeRule

public AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass,
                                  Class<? extends Join> joinClass,
                                  RelBuilderFactory relBuilderFactory,
                                  boolean allowFunctions)

Creates an AggregateJoinTransposeRule.

AggregateJoinTransposeRule

@Deprecated
public AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass,
                                              RelFactories.AggregateFactory aggregateFactory,
                                              Class<? extends Join> joinClass,
                                              RelFactories.JoinFactory joinFactory)

Deprecated.

AggregateJoinTransposeRule

@Deprecated
public AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass,
                                              RelFactories.AggregateFactory aggregateFactory,
                                              Class<? extends Join> joinClass,
                                              RelFactories.JoinFactory joinFactory,
                                              boolean allowFunctions)

Deprecated.

AggregateJoinTransposeRule

@Deprecated
public AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass,
                                              RelFactories.AggregateFactory aggregateFactory,
                                              Class<? extends Join> joinClass,
                                              RelFactories.JoinFactory joinFactory,
                                              RelFactories.ProjectFactory projectFactory)

Deprecated.

AggregateJoinTransposeRule

@Deprecated
public AggregateJoinTransposeRule(Class<? extends Aggregate> aggregateClass,
                                              RelFactories.AggregateFactory aggregateFactory,
                                              Class<? extends Join> joinClass,
                                              RelFactories.JoinFactory joinFactory,
                                              RelFactories.ProjectFactory projectFactory,
                                              boolean allowFunctions)

Deprecated.

Method Detail

onMatch

public void onMatch(RelOptRuleCall call)

Description copied from class: RelOptRule

Receives notification about a rule match. At the time that this method is called, call.rels holds the set of relational expressions which match the operands to the rule; call.rels[0] is the root expression.

Typically a rule would check that the nodes are valid matches, creates a new expression, then calls back RelOptRuleCall.transformTo(org.apache.calcite.rel.RelNode, java.util.Map<org.apache.calcite.rel.RelNode, org.apache.calcite.rel.RelNode>) to register the expression.

Specified by:

onMatch in class RelOptRule

Parameters:

call - Rule call

See Also:

RelOptRule.matches(RelOptRuleCall)

keyColumns

private static ImmutableBitSet keyColumns(ImmutableBitSet aggregateColumns,
                                          com.google.common.collect.ImmutableList<RexNode> predicates)

Computes the closure of a set of columns according to a given list of constraints. Each 'x = y' constraint causes bit y to be set if bit x is set, and vice versa.

populateEquivalences

private static void populateEquivalences(Map<Integer,BitSet> equivalence,
                                         RexNode predicate)

populateEquivalence

private static void populateEquivalence(Map<Integer,BitSet> equivalence,
                                        int i0,
                                        int i1)

registry

private static <E> SqlSplittableAggFunction.Registry<E> registry(List<E> list)

Creates a SqlSplittableAggFunction.Registry that is a view of a list.