Package org.apache.calcite.adapter.enumerable.impl

Class AggResetContextImpl

java.lang.Object

org.apache.calcite.adapter.enumerable.NestedBlockBuilderImpl

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

All Implemented Interfaces:

AggResetContext, NestedBlockBuilder

Direct Known Subclasses:

AggResultContextImpl, WinAggResetContextImpl

public abstract class AggResetContextImpl
extends NestedBlockBuilderImpl
implements AggResetContext

Implementation of AggResetContext.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AggResetContextImpl(BlockBuilder block, List<Expression> accumulator)	Creates aggregate reset context.

Method Summary

Modifier and Type	Method	Description
List<Expression>	accumulator()	Returns accumulator variables that should be reset.
AggregateCall	call()

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

currentBlock, exitBlock, 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.NestedBlockBuilder

currentBlock, exitBlock, nestBlock, nestBlock

Constructor Details

AggResetContextImpl

protected AggResetContextImpl(BlockBuilder block,
 List<Expression> accumulator)

Creates aggregate reset context.

Parameters:

block - Code block that will contain the added initialization

accumulator - Accumulator variables that store the intermediate aggregate state

Method Details

accumulator

public List<Expression> accumulator()

Description copied from interface: AggResetContext

Returns accumulator variables that should be reset. There MUST be an assignment even if you just assign the default value.

Specified by:

accumulator in interface AggResetContext

Returns:

accumulator variables that should be reset or empty list when no accumulator variables are used by the aggregate implementation.

See Also:

• AggImplementor.getStateType(org.apache.calcite.adapter.enumerable.AggContext)

call

public AggregateCall call()