org.apache.calcite.adapter.enumerable

Interface AggResetContext

All Superinterfaces:

NestedBlockBuilder

All Known Subinterfaces:

AggAddContext, AggResultContext, WinAggAddContext, WinAggResetContext, WinAggResultContext

All Known Implementing Classes:

AggAddContextImpl, AggResetContextImpl, AggResultContextImpl, WinAggAddContextImpl, WinAggResetContextImpl, WinAggResultContextImpl

public interface AggResetContext
extends NestedBlockBuilder

Information for a call to AggImplementor.implementReset(AggContext, AggResetContext). AggResetContext provides access to the accumulator variables that should be reset.

Method Summary

Methods

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

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

currentBlock, currentNullables, exitBlock, nestBlock, nestBlock, nestBlock

Method Detail

accumulator

List<Expression> accumulator()

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

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)