org.apache.calcite.adapter.enumerable

Interface WinAggResultContext

All Superinterfaces:

AggResetContext, AggResultContext, NestedBlockBuilder, WinAggFrameContext, WinAggFrameResultContext

All Known Subinterfaces:

WinAggAddContext

All Known Implementing Classes:

WinAggAddContextImpl, WinAggResultContextImpl

public interface WinAggResultContext
extends AggResultContext, WinAggFrameResultContext

Information for a call to AggImplementor.implementResult(AggContext, AggResultContext).

Typically, the aggregation implementation will convert AggResetContext.accumulator() to the resulting value of the aggregation. The implementation MUST NOT destroy the contents of AggResetContext.accumulator().

Method Summary

Methods

Modifier and Type	Method and Description
List<Expression>	arguments(Expression rowIndex) Returns Linq4j form of arguments.
List<RexNode>	rexArguments() Returns RexNode representation of arguments.

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

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

compareRows, computeIndex, rowInFrame, rowInPartition, rowTranslator

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

endIndex, getFrameRowCount, getPartitionRowCount, hasRows, index, startIndex

Method Detail

rexArguments

List<RexNode> rexArguments()

Returns RexNode representation of arguments. This can be useful for manual translation of required arguments with different NullPolicy.

Returns:

RexNode representation of arguments

arguments

List<Expression> arguments(Expression rowIndex)

Returns Linq4j form of arguments. The resulting value is equivalent to rowTranslator().translateList(rexArguments()). This is handy if you need just operate on argument.

Parameters:

rowIndex - index of the requested row. The index must be in range of partition's startIndex and endIndex.

Returns:

Linq4j form of arguments of the particular row