com.sleepycat.je.utilint

Class LongAvgStat

java.lang.Object

com.sleepycat.je.utilint.BaseStat<T>

com.sleepycat.je.utilint.Stat<T>

com.sleepycat.je.utilint.StatWithValueType<Long>

com.sleepycat.je.utilint.LongAvgStat

All Implemented Interfaces:

Serializable, Cloneable

public class LongAvgStat
extends StatWithValueType<Long>

A long JE stat that computes the average of the values in the current time period. Returns zero if no values are observed.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.sleepycat.je.utilint.Stat

definition

Constructor Summary

Constructors

Constructor and Description
LongAvgStat(StatGroup group, StatDefinition definition) Creates an instance of this class.

Method Summary

Modifier and Type	Method and Description
void	add(long value) Adds a new value to the average.
void	add(Stat<Long> other) Add the value of "other" to this stat.
void	clear() Resets the statistic to its initial state.
Stat<Long>	computeInterval(Stat<Long> base) Compute interval value with respect to the base value.
LongAvgStat	copy() Returns a copy of this statistic.
Long	get() Returns the value of the statistic.
protected String	getFormattedValue() Returns the value of the statistic as a formatted string.
Class<Long>	getValueType() Returns the type of the value returned by the BaseStat.get() method.
boolean	isNotSet() Returns whether the statistic is in its initial state.
void	negate() Negate the value.
void	set(Long newValue) Set the stat value.

Methods inherited from class com.sleepycat.je.utilint.StatWithValueType

getForType

Methods inherited from class com.sleepycat.je.utilint.Stat

copyAndAdd, copyAndClear, getDefinition, toString, toStringVerbose

Methods inherited from class java.lang.Object

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

Constructor Detail

LongAvgStat

public LongAvgStat(StatGroup group,
                   StatDefinition definition)

Creates an instance of this class. The definition type must be INCREMENTAL.

Parameters:

group - the statistics group

definition - the statistics definition

Method Detail

add

public void add(long value)

Adds a new value to the average.

Parameters:

value - the new value

getValueType

public Class<Long> getValueType()

Description copied from class: StatWithValueType

Returns the type of the value returned by the BaseStat.get() method.

Specified by:

getValueType in class StatWithValueType<Long>

Returns:

the type of the value returned by get

set

public void set(Long newValue)

Set the stat value.

Specified by:

set in class Stat<Long>

Throws:

UnsupportedOperationException - always

add

public void add(Stat<Long> other)

Description copied from class: Stat

Add the value of "other" to this stat.

Specified by:

add in class Stat<Long>

computeInterval

public Stat<Long> computeInterval(Stat<Long> base)

Compute interval value with respect to the base value.

Specified by:

computeInterval in class Stat<Long>

Throws:

IllegalArgumentException - if argument is not a LongAvgStat

negate

public void negate()

Description copied from class: Stat

Negate the value.

Specified by:

negate in class Stat<Long>

copy

public LongAvgStat copy()

Description copied from class: BaseStat

Returns a copy of this statistic.

Overrides:

copy in class Stat<Long>

Returns:

a copy

get

public Long get()

Description copied from class: BaseStat

Returns the value of the statistic.

Specified by:

get in class BaseStat<Long>

Returns:

the value

clear

public void clear()

Description copied from class: BaseStat

Resets the statistic to its initial state.

Specified by:

clear in class BaseStat<Long>

getFormattedValue

protected String getFormattedValue()

Description copied from class: BaseStat

Returns the value of the statistic as a formatted string.

Specified by:

getFormattedValue in class BaseStat<Long>

Returns:

the value as a formatted string

isNotSet

public boolean isNotSet()

Description copied from class: BaseStat

Returns whether the statistic is in its initial state.

Specified by:

isNotSet in class BaseStat<Long>

Returns:

if the statistic is in its initial state