org.apache.calcite.sql2rel

Class StandardConvertletTable.AvgVarianceConvertlet

java.lang.Object

org.apache.calcite.sql2rel.StandardConvertletTable.AvgVarianceConvertlet

All Implemented Interfaces:

SqlRexConvertlet

Enclosing class:

StandardConvertletTable

private static class StandardConvertletTable.AvgVarianceConvertlet
extends Object
implements SqlRexConvertlet

Convertlet that handles AVG and VARIANCE windowed aggregate functions.

Field Summary

Fields

Modifier and Type	Field and Description
private SqlKind	kind

Constructor Summary

Constructors

Constructor and Description
AvgVarianceConvertlet(SqlKind kind)

Method Summary

Modifier and Type	Method and Description
RexNode	convertCall(SqlRexContext cx, SqlCall call)
private SqlNode	expandAvg(SqlNode arg, RelDataType avgType, SqlRexContext cx)
private SqlNode	expandVariance(SqlNode argInput, RelDataType varType, SqlRexContext cx, boolean biased, boolean sqrt)

Methods inherited from class java.lang.Object

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

Field Detail

kind

private final SqlKind kind

Constructor Detail

AvgVarianceConvertlet

AvgVarianceConvertlet(SqlKind kind)

Method Detail

convertCall

public RexNode convertCall(SqlRexContext cx,
                           SqlCall call)

Specified by:

convertCall in interface SqlRexConvertlet

expandAvg

private SqlNode expandAvg(SqlNode arg,
                          RelDataType avgType,
                          SqlRexContext cx)

expandVariance

private SqlNode expandVariance(SqlNode argInput,
                               RelDataType varType,
                               SqlRexContext cx,
                               boolean biased,
                               boolean sqrt)