org.apache.storm.sql.compiler.backends.standalone

Class BuiltinAggregateFunctions

java.lang.Object

org.apache.storm.sql.compiler.backends.standalone.BuiltinAggregateFunctions

public class BuiltinAggregateFunctions
extends Object

Built-in implementations for some of the standard aggregation operations. Aggregations can be implemented as a class with the following methods viz. init, add and result. The class could contain only static methods, only non-static methods or be generic.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BuiltinAggregateFunctions.ByteSum
static class	BuiltinAggregateFunctions.Count
static class	BuiltinAggregateFunctions.DoubleAvg
static class	BuiltinAggregateFunctions.DoubleSum
static class	BuiltinAggregateFunctions.FloatSum
static class	BuiltinAggregateFunctions.IntAvg
static class	BuiltinAggregateFunctions.IntSum
static class	BuiltinAggregateFunctions.LongSum
static class	BuiltinAggregateFunctions.Max<T extends Comparable<T>>
static class	BuiltinAggregateFunctions.Min<T extends Comparable<T>>
static class	BuiltinAggregateFunctions.ShortSum
static class	BuiltinAggregateFunctions.TypeClass

Constructor Summary

Constructors

Constructor and Description
BuiltinAggregateFunctions()

Method Summary

Methods inherited from class java.lang.Object

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

Constructor Detail

BuiltinAggregateFunctions

public BuiltinAggregateFunctions()