org.rhq.metrics.core

Class Interval

java.lang.Object

org.rhq.metrics.core.Interval

public class Interval
extends Object

Describes an interval or duration intended to be used with aggregated metrics. An interval describes the frequency at which aggregated metrics are computed/updated. It consists of two parts - length and units. Examples include,

• 1min
• 5min
• 1hr
• 5hr
• 1d
• 5d

where min denotes minute, hr denotes hour, and d denotes day.

Author:

John Sanda

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Interval.Units

Field Summary

Fields

Modifier and Type	Field and Description
static Interval	NONE

Constructor Summary

Constructors

Constructor and Description
Interval(int length, Interval.Units units)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o)
int	getLength()
Interval.Units	getUnits()
int	hashCode()
static Interval	parse(String s) Parses the string into an interval.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

NONE

public static final Interval NONE

Constructor Detail

Interval

public Interval(int length,
        Interval.Units units)

Method Detail

parse

public static Interval parse(String s)

Parses the string into an interval. The string must match the regular expression (\d+)(min|hr|d); otherwise, an exception is thrown.

Parameters:

s - The string to parse

Returns:

The Interval

Throws:

IllegalArgumentException - if the string does not parse

getLength

public int getLength()

getUnits

public Interval.Units getUnits()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object