org.apache.calcite.rel.logical

Class LogicalAggregate

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Aggregate

org.apache.calcite.rel.logical.LogicalAggregate

All Implemented Interfaces:

Cloneable, RelOptNode, RelNode

public final class LogicalAggregate
extends Aggregate

LogicalAggregate is a relational operator which eliminates duplicates and computes totals.

Rules:

• AggregateProjectPullUpConstantsRule
• AggregateExpandDistinctAggregatesRule
• AggregateReduceFunctionsRule.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.rel.core.Aggregate

Aggregate.AggCallBinding, Aggregate.Group

Field Summary

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

aggCalls, groupSet, groupSets, indicator, IS_SIMPLE

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

digest, id, rowType, traitSet

Constructor Summary

Constructors

Constructor and Description
LogicalAggregate(RelInput input) Creates a LogicalAggregate by parsing serialized output.
LogicalAggregate(RelOptCluster cluster, RelNode child, boolean indicator, ImmutableBitSet groupSet, List<ImmutableBitSet> groupSets, List<AggregateCall> aggCalls) Deprecated.
LogicalAggregate(RelOptCluster cluster, RelTraitSet traitSet, RelNode child, boolean indicator, ImmutableBitSet groupSet, List<ImmutableBitSet> groupSets, List<AggregateCall> aggCalls) Creates a LogicalAggregate.

Method Summary

Methods

Modifier and Type	Method and Description
RelNode	accept(RelShuttle shuttle) Accepts a visit from a shuttle.
LogicalAggregate	copy(RelTraitSet traitSet, RelNode input, boolean indicator, ImmutableBitSet groupSet, List<ImmutableBitSet> groupSets, List<AggregateCall> aggCalls) Creates a copy of this aggregate.
static LogicalAggregate	create(RelNode input, boolean indicator, ImmutableBitSet groupSet, List<ImmutableBitSet> groupSets, List<AggregateCall> aggCalls) Creates a LogicalAggregate.

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

computeSelfCost, containsDistinctCall, copy, deriveRowType, deriveRowType, explainTerms, getAggCallList, getGroupCount, getGroupSet, getGroupSets, getGroupType, getIndicatorCount, getRows, isDistinct

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

childrenAccept, getInput, getInputs, replaceInput

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

accept, collectVariablesSet, collectVariablesUsed, computeDigest, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesStopped, 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

Constructor Detail

LogicalAggregate

public LogicalAggregate(RelOptCluster cluster,
                RelTraitSet traitSet,
                RelNode child,
                boolean indicator,
                ImmutableBitSet groupSet,
                List<ImmutableBitSet> groupSets,
                List<AggregateCall> aggCalls)

Creates a LogicalAggregate.

Use create(org.apache.calcite.rel.RelNode, boolean, org.apache.calcite.util.ImmutableBitSet, java.util.List<org.apache.calcite.util.ImmutableBitSet>, java.util.List<org.apache.calcite.rel.core.AggregateCall>) unless you know what you're doing.

Parameters:

cluster - Cluster that this relational expression belongs to

child - input relational expression

groupSet - Bit set of grouping fields

groupSets - Grouping sets, or null to use just groupSet

aggCalls - Array of aggregates to compute, not null

LogicalAggregate

@Deprecated
public LogicalAggregate(RelOptCluster cluster,
                           RelNode child,
                           boolean indicator,
                           ImmutableBitSet groupSet,
                           List<ImmutableBitSet> groupSets,
                           List<AggregateCall> aggCalls)

Deprecated.

LogicalAggregate

public LogicalAggregate(RelInput input)

Creates a LogicalAggregate by parsing serialized output.

Method Detail

create

public static LogicalAggregate create(RelNode input,
                      boolean indicator,
                      ImmutableBitSet groupSet,
                      List<ImmutableBitSet> groupSets,
                      List<AggregateCall> aggCalls)

Creates a LogicalAggregate.

copy

public LogicalAggregate copy(RelTraitSet traitSet,
                    RelNode input,
                    boolean indicator,
                    ImmutableBitSet groupSet,
                    List<ImmutableBitSet> groupSets,
                    List<AggregateCall> aggCalls)

Description copied from class: Aggregate

Creates a copy of this aggregate.

Specified by:

copy in class Aggregate

Parameters:

traitSet - Traits

input - Input

indicator - Whether row type should include indicator fields to indicate which grouping set is active; must be true if aggregate is not simple

groupSet - Bit set of grouping fields

groupSets - List of all grouping sets; null for just groupSet

aggCalls - Collection of calls to aggregate functions

Returns:

New Aggregate if any parameter differs from the value of this Aggregate, or just this if all the parameters are the same

See Also:

Aggregate.copy(org.apache.calcite.plan.RelTraitSet, java.util.List)

accept

public RelNode accept(RelShuttle shuttle)

Description copied from interface: RelNode

Accepts a visit from a shuttle.

Specified by:

accept in interface RelNode

Overrides:

accept in class AbstractRelNode

Parameters:

shuttle - Shuttle

Returns:

A copy of this node incorporating changes made by the shuttle to this node's children