Package com.arpnetworking.metrics.mad.model.statistics

Class ExpressionStatistic

java.lang.Object

com.arpnetworking.metrics.mad.model.statistics.BaseStatistic

com.arpnetworking.metrics.mad.model.statistics.ExpressionStatistic

All Implemented Interfaces:

Statistic, Serializable

public final class ExpressionStatistic
extends BaseStatistic

The aggregation is performed with a user-defined expression. At this time this class is only a place holder, but evaluation of the expression will in theory be moved into each unique instance in the future. Use StatisticFactory for construction.

Author:

Ville Koskela (ville dot koskela at inscopemetrics dot io)

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
Accumulator<Void>	createCalculator()	Create a Calculator for this statistic.
Set<Statistic>	getDependencies()	Accessor for any dependencies.
String	getName()	Accessor for the name of the statistic.

Methods inherited from class com.arpnetworking.metrics.mad.model.statistics.BaseStatistic

assertUnit, equals, getAliases, hashCode, toString

Methods inherited from class java.lang.Object

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

Method Details

getName

public String getName()

Description copied from interface: Statistic

Accessor for the name of the statistic.

Returns:

The name of the statistic.

createCalculator

public Accumulator<Void> createCalculator()

Description copied from interface: Statistic

Create a Calculator for this statistic.

Returns:

The new Calculator instance.

getDependencies

public Set<Statistic> getDependencies()

Description copied from interface: Statistic

Accessor for any dependencies.

Specified by:

getDependencies in interface Statistic

Overrides:

getDependencies in class BaseStatistic

Returns:

The Set of Statistic dependencies.