org.apache.calcite.adapter.enumerable.impl

Class AggResultContextImpl

java.lang.Object

org.apache.calcite.adapter.enumerable.NestedBlockBuilderImpl

org.apache.calcite.adapter.enumerable.impl.AggResetContextImpl

org.apache.calcite.adapter.enumerable.impl.AggResultContextImpl

All Implemented Interfaces:

AggResetContext, AggResultContext, NestedBlockBuilder

Direct Known Subclasses:

AggAddContextImpl, WinAggResultContextImpl

public class AggResultContextImpl
extends AggResetContextImpl
implements AggResultContext

Implementation of AggResultContext

Field Summary

Fields

Modifier and Type	Field and Description
private AggregateCall	call
private ParameterExpression	key
private PhysType	keyPhysType

Constructor Summary

Constructors

Constructor and Description
AggResultContextImpl(BlockBuilder block, AggregateCall call, List<Expression> accumulator, ParameterExpression key, PhysType keyPhysType) Creates aggregate result context.

Method Summary

Modifier and Type	Method and Description
AggregateCall	call()
Expression	key() Expression by which to reference the key upon which the values in the accumulator were aggregated.
Expression	keyField(int i) Returns an expression that references the ith field of the key, cast to the appropriate type.

Methods inherited from class org.apache.calcite.adapter.enumerable.impl.AggResetContextImpl

accumulator

Methods inherited from class org.apache.calcite.adapter.enumerable.NestedBlockBuilderImpl

currentBlock, currentNullables, exitBlock, nestBlock, nestBlock, nestBlock

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.calcite.adapter.enumerable.AggResetContext

accumulator

Methods inherited from interface org.apache.calcite.adapter.enumerable.NestedBlockBuilder

currentBlock, currentNullables, exitBlock, nestBlock, nestBlock, nestBlock

Field Detail

call

private final AggregateCall call

key

private final ParameterExpression key

keyPhysType

private final PhysType keyPhysType

Constructor Detail

AggResultContextImpl

public AggResultContextImpl(BlockBuilder block,
                            AggregateCall call,
                            List<Expression> accumulator,
                            ParameterExpression key,
                            PhysType keyPhysType)

Creates aggregate result context.

Parameters:

block - Code block that will contain the result calculation statements

call - Aggregate call

accumulator - Accumulator variables that store the intermediate aggregate state

key - Key

Method Detail

key

public Expression key()

Description copied from interface: AggResultContext

Expression by which to reference the key upon which the values in the accumulator were aggregated. Most aggregate functions depend on only the accumulator, but quasi-aggregate functions such as GROUPING access at the key.

Specified by:

key in interface AggResultContext

keyField

public Expression keyField(int i)

Description copied from interface: AggResultContext

Returns an expression that references the ith field of the key, cast to the appropriate type.

Specified by:

keyField in interface AggResultContext

call

public AggregateCall call()

Specified by:

call in interface AggResultContext

Overrides:

call in class AggResetContextImpl