com.sleepycat.je.utilint

Class StatWithValueType<T>

java.lang.Object

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

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

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

Type Parameters:

T - The statistic value type

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

AtomicIntStat, AtomicLongStat, IntStat, LatencyPercentileStat, LongAvgRateStat, LongAvgStat, LongStat

public abstract class StatWithValueType<T>
extends Stat<T>

Stat base class for stats that want to advertise a return value of a particular type.

See Also:

Serialized Form

Field Summary

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

definition

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	StatWithValueType(StatDefinition definition) Creates an instance without registering it with an owning group.
protected	StatWithValueType(StatGroup group, StatDefinition definition) Creates an instance that registers itself with an owning group.

Method Summary

Modifier and Type	Method and Description
<S> S	getForType(Class<S> requestedType) Returns the value of the statistic as an instance of the specified type, or null if the value is a different type.
abstract Class<T>	getValueType() Returns the type of the value returned by the BaseStat.get() method.

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

add, computeInterval, copy, copyAndAdd, copyAndClear, getDefinition, negate, set, toString, toStringVerbose

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

clear, get, getFormattedValue, isNotSet

Methods inherited from class java.lang.Object

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

Constructor Detail

StatWithValueType

protected StatWithValueType(StatGroup group,
                            StatDefinition definition)

Creates an instance that registers itself with an owning group.

Parameters:

group - the owning group

definition - the definition of the statistic

StatWithValueType

protected StatWithValueType(StatDefinition definition)

Creates an instance without registering it with an owning group.

Parameters:

definition - the definition of the statistic

Method Detail

getValueType

public abstract Class<T> getValueType()

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

Returns:

the type of the value returned by get

getForType

public <S> S getForType(Class<S> requestedType)

Returns the value of the statistic as an instance of the specified type, or null if the value is a different type.

Type Parameters:

S - the desired value type

Parameters:

requestedType - the class of the desired value type

Returns:

the statistic value or null