Package org.apache.calcite.adapter.enumerable

Class EnumerableAggregateBase

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Aggregate

org.apache.calcite.adapter.enumerable.EnumerableAggregateBase

All Implemented Interfaces:

Cloneable, RelOptNode, Hintable, RelNode

Direct Known Subclasses:

EnumerableAggregate, EnumerableSortedAggregate

public abstract class EnumerableAggregateBase
extends Aggregate

Base class for EnumerableAggregate and EnumerableSortedAggregate.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	EnumerableAggregateBase.AggContextImpl	An implementation of AggContext.

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

Aggregate.AggCallBinding, Aggregate.Group, Aggregate.PercentileDiscAggCallBinding

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

RelNode.Context

Field Summary

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

aggCalls, groupSet, groupSets, hints, indicator, IS_NOT_GRAND_TOTAL, IS_SIMPLE, NO_INDICATOR

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

input

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

digest, id, rowType, traitSet

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	EnumerableAggregateBase(RelOptCluster cluster, RelTraitSet traitSet, List<RelHint> hints, RelNode input, ImmutableBitSet groupSet, @Nullable List<ImmutableBitSet> groupSets, List<AggregateCall> aggCalls)

Method Summary

Modifier and Type	Method	Description
protected void	createAccumulatorAdders(ParameterExpression inParameter, List<AggImpState> aggs, PhysType accPhysType, ParameterExpression accExpr, PhysType inputPhysType, BlockBuilder builder, EnumerableRelImplementor implementor, JavaTypeFactory typeFactory)
protected List<Type>	createAggStateTypes(List<Expression> initExpressions, BlockBuilder initBlock, List<AggImpState> aggs, JavaTypeFactory typeFactory)
protected void	declareParentAccumulator(List<Expression> initExpressions, BlockBuilder initBlock, PhysType accPhysType)
protected static boolean	hasOrderedCall(List<AggImpState> aggs)
protected void	implementLambdaFactory(BlockBuilder builder, PhysType inputPhysType, List<AggImpState> aggs, Expression accumulatorInitializer, boolean hasOrderedCall, ParameterExpression lambdaFactory)	Implements the AggregateLambdaFactory.

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

checkIndicator, computeSelfCost, containsDistinctCall, copy, copy, copy, deriveRowType, deriveRowType, estimateRowCount, explainTerms, getAggCallList, getGroupCount, getGroupSet, getGroupSets, getGroupType, getHints, getIndicatorCount, getNamedAggCalls, isNotGrandTotal, isSimple, isValid, noIndicator

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

childrenAccept, getInput, getInputs, replaceInput

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

accept, accept, collectVariablesSet, collectVariablesUsed, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, 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

Constructor Details

EnumerableAggregateBase

protected EnumerableAggregateBase(RelOptCluster cluster,
 RelTraitSet traitSet,
 List<RelHint> hints,
 RelNode input,
 ImmutableBitSet groupSet,
 @Nullable List<ImmutableBitSet> groupSets,
 List<AggregateCall> aggCalls)

Method Details

hasOrderedCall

protected static boolean hasOrderedCall(List<AggImpState> aggs)

declareParentAccumulator

protected void declareParentAccumulator(List<Expression> initExpressions,
 BlockBuilder initBlock,
 PhysType accPhysType)

implementLambdaFactory

protected void implementLambdaFactory(BlockBuilder builder,
 PhysType inputPhysType,
 List<AggImpState> aggs,
 Expression accumulatorInitializer,
 boolean hasOrderedCall,
 ParameterExpression lambdaFactory)

Implements the AggregateLambdaFactory.

Behavior depends upon ordering:

• hasOrderedCall == true means there is at least one aggregate call including sort spec. We use LazyAggregateLambdaFactory implementation to implement sorted aggregates for that.
• hasOrderedCall == false indicates to use BasicAggregateLambdaFactory to implement a non-sort aggregate.

createAccumulatorAdders

protected void createAccumulatorAdders(ParameterExpression inParameter,
 List<AggImpState> aggs,
 PhysType accPhysType,
 ParameterExpression accExpr,
 PhysType inputPhysType,
 BlockBuilder builder,
 EnumerableRelImplementor implementor,
 JavaTypeFactory typeFactory)

createAggStateTypes

protected List<Type> createAggStateTypes(List<Expression> initExpressions,
 BlockBuilder initBlock,
 List<AggImpState> aggs,
 JavaTypeFactory typeFactory)