fish.payara.monitoring.model

Class StableDataset

java.lang.Object

fish.payara.monitoring.model.SeriesDataset

fish.payara.monitoring.model.ConstantDataset

fish.payara.monitoring.model.StableDataset

All Implemented Interfaces:

Serializable

public final class StableDataset
extends ConstantDataset

A StableDataset is a dataset of a Series that was a PartialDataset before it became stable for such a long duration that it moved to a StableDataset. In contrast to a ConstantDataset a StableDataset does have a history of observed values changes and differing sum, minimum and maximum values. A ConstantDataset on the other hand has only ever observed the very same value which is its minimum, maximum and average value for any number of observed values.

Author:

Jan Bernitt

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
StableDataset(SeriesDataset predecessor, long time)

Method Summary

Modifier and Type	Method and Description
SeriesDataset	add(long time, long value)
int	estimatedBytesMemory()
long	getObservedMax()
long	getObservedMin()
BigInteger	getObservedSum()
int	getObservedValueChanges() Note that minimum is 1 (changing from unknown to know value).
int	getStableCount()

Methods inherited from class fish.payara.monitoring.model.ConstantDataset

capacity, firstTime, getStableSince, isOutdated, lastTime, lastValue, points, size

Methods inherited from class fish.payara.monitoring.model.SeriesDataset

equals, getInstance, getObservedAvg, getObservedSince, getObservedValues, getSeries, hashCode, isStable, isStableZero, perSecond, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

StableDataset

public StableDataset(SeriesDataset predecessor,
                     long time)

Method Detail

getObservedValueChanges

public int getObservedValueChanges()

Description copied from class: SeriesDataset

Note that minimum is 1 (changing from unknown to know value). Zero means no values have been observed yet. Note also that change count of 1 does not imply that the value never did change just that such a change was never observed.

Overrides:

getObservedValueChanges in class ConstantDataset

Returns:

Number of times the value as altered since it has been monitored.

getObservedMax

public long getObservedMax()

Overrides:

getObservedMax in class ConstantDataset

Returns:

The largest value observed so far. If no value was observed Long.MIN_VALUE.

getObservedMin

public long getObservedMin()

Overrides:

getObservedMin in class ConstantDataset

Returns:

The smallest value observed so far. If no value was observed Long.MAX_VALUE.

getObservedSum

public BigInteger getObservedSum()

Overrides:

getObservedSum in class ConstantDataset

Returns:

sum of all observed values.

getStableCount

public int getStableCount()

Overrides:

getStableCount in class ConstantDataset

Returns:

the number of recent observed points that all had the same value which is same as SeriesDataset.lastValue()

add

public SeriesDataset add(long time,
                         long value)

Overrides:

add in class ConstantDataset

estimatedBytesMemory

public int estimatedBytesMemory()

Overrides:

estimatedBytesMemory in class ConstantDataset

Returns:

the estimated memory in bytes used by this dataset. Since the object layout in memory is a JVM internal this is only a rough estimation based on the fields. References are assumed to use 8 bytes. Padding is not included.