Package org.zkoss.pivot.impl.calc

Class SumCountContext

java.lang.Object

org.zkoss.pivot.impl.calc.SumCountContext

All Implemented Interfaces:

Context<SumCountContext>

public class SumCountContext
extends Object
implements Context<SumCountContext>

The most commonly used context including SUM, COUNT and COUNT_NUMBER aggregation.

Author:

simonpai

Field Summary

Fields

Modifier and Type	Field	Description
protected int	_count
protected int	_numCount
protected Numbers.MixedTypedNumber	_sum
static final ContextFactory<SumCountContext>	FACTORY

Constructor Summary

Constructors

Constructor	Description
SumCountContext()

Method Summary

Modifier and Type	Method	Description
void	add(Object item)	Add an item into the aggregation.
int	getCount()	Retrieve COUNT, which includes the count of non-number objects.
int	getNumberCount()	Retrieve NUMBER COUNT, which excludes the count of non-number objects.
Number	getSum()	Retrieve SUM.
void	merge(SumCountContext ctx)	Merge from another context of the same type.

Methods inherited from class java.lang.Object

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

Field Details

_sum

protected Numbers.MixedTypedNumber _sum

_numCount

protected int _numCount

_count

protected int _count

FACTORY

public static final ContextFactory<SumCountContext> FACTORY

Constructor Details

SumCountContext

public SumCountContext()

Method Details

add

public void add(Object item)

Description copied from interface: Context

Add an item into the aggregation.

Specified by:

add in interface Context<SumCountContext>

merge

public void merge(SumCountContext ctx)

Description copied from interface: Context

Merge from another context of the same type.

Specified by:

merge in interface Context<SumCountContext>

getCount

public int getCount()

Retrieve COUNT, which includes the count of non-number objects.

getNumberCount

public int getNumberCount()

Retrieve NUMBER COUNT, which excludes the count of non-number objects.

getSum

public Number getSum()

Retrieve SUM.