Package org.h2.expression.aggregate

Class AggregateData

java.lang.Object

org.h2.expression.aggregate.AggregateData

Direct Known Subclasses:

AggregateDataAvg, AggregateDataBinarySet, AggregateDataCollecting, AggregateDataCount, AggregateDataDefault, AggregateDataDistinctWithCounts, AggregateDataEnvelope, AggregateDataStdVar

abstract class AggregateData
extends Object

Abstract class for the computation of an aggregate.

Constructor Summary

Constructors

Constructor	Description
AggregateData()

Method Summary

Modifier and Type	Method	Description
(package private) abstract void	add(SessionLocal session, Value v)	Add a value to this aggregate.
(package private) abstract Value	getValue(SessionLocal session)	Get the aggregate result.

Methods inherited from class java.lang.Object

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

Constructor Details

AggregateData

AggregateData()

Method Details

add

abstract void add(SessionLocal session,
 Value v)

Add a value to this aggregate.

Parameters:

session - the session

v - the value

getValue

abstract Value getValue(SessionLocal session)

Get the aggregate result.

Parameters:

session - the session

Returns:

the value