com.sleepycat.je.utilint

Class LongDiffMapStat

java.lang.Object

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

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

com.sleepycat.je.utilint.MapStat<Long,LongDiffStat>

com.sleepycat.je.utilint.LongDiffMapStat

All Implemented Interfaces:

Serializable, Cloneable

public final class LongDiffMapStat
extends MapStat<Long,LongDiffStat>

A JE stat that maintains a map of individual LongDiffStat values which can be looked up with a String key, and that returns results as a formatted string. Only supports CUMULATIVE stats.

See Also:

Serialized Form

Field Summary

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

statMap

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

definition

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
LongDiffMapStat	computeInterval(Stat<String> base) Ignores base for a non-additive stat.
LongDiffMapStat	copy() Returns a copy of this statistic.
LongDiffStat	createStat(String key, Stat<Long> base) Creates, stores, and returns a new stat for the specified key and base stat.
void	negate() Does nothing for a non-additive stat.

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

add, clear, copyAndClear, get, getFormattedValue, getMap, isNotSet, removeStat, set

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

copyAndAdd, getDefinition, toString, toStringVerbose

Methods inherited from class java.lang.Object

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

Constructor Detail

LongDiffMapStat

public LongDiffMapStat(StatGroup group,
                       StatDefinition definition,
                       long validityMillis)

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

Parameters:

group - the owning group

definition - the associated definition

validityMillis - the amount of time, in milliseconds, which a computed difference remains valid

Method Detail

createStat

public LongDiffStat createStat(String key,
                               Stat<Long> base)

Creates, stores, and returns a new stat for the specified key and base stat.

Parameters:

key - the new key

base - the base stat

Returns:

the new stat

copy

public LongDiffMapStat copy()

Description copied from class: BaseStat

Returns a copy of this statistic.

Overrides:

copy in class Stat<String>

Returns:

a copy

computeInterval

public LongDiffMapStat computeInterval(Stat<String> base)

Ignores base for a non-additive stat.

Specified by:

computeInterval in class Stat<String>

negate

public void negate()

Does nothing for a non-additive stat.

Specified by:

negate in class Stat<String>