com.yahoo.metrics.simple

Class Point

java.lang.Object

com.yahoo.metrics.simple.Point

All Implemented Interfaces:

com.yahoo.jdisc.Metric.Context

@Beta
public final class Point
extends Object
implements com.yahoo.jdisc.Metric.Context

An efficiently comparable point in a sparse vector space.

Author:

steinar

Field Summary

Fields

Modifier and Type	Field and Description
private String[]	dimensions
private Value[]	location
private static Point	theEmptyPoint

Constructor Summary

Constructors

Modifier	Constructor and Description
	Point(Map<String,?> properties)
(package private)	Point(String[] dimensions, Value[] location) Only to be used by simplemetrics itself.
private	Point(com.yahoo.collections.Tuple2<String[],Value[]> dimensionsAndLocation)

Method Summary

Modifier and Type	Method and Description
private static com.yahoo.collections.Tuple2<String[],Value[]>	buildParameters(Map<String,?> properties)
int	dimensionality() Get the number of dimensions defined for this Point, i.e.
List<String>	dimensions() Get an immutable list view of the names of each dimension.
static Point	emptyPoint() the canonical 0-dimensional Point.
boolean	equals(Object obj)
(package private) String[]	getDimensions() package private accessor only for simplemetrics itself
(package private) Value[]	getLocation() package private accessor only for simplemetrics itself
int	hashCode()
List<Value>	location() Get an immutable list view of the values for each dimension.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

location

private final Value[] location

dimensions

private final String[] dimensions

theEmptyPoint

private static final Point theEmptyPoint

Constructor Detail

Point

public Point(Map<String,?> properties)

Point

private Point(com.yahoo.collections.Tuple2<String[],Value[]> dimensionsAndLocation)

Point

Point(String[] dimensions,
      Value[] location)

Only to be used by simplemetrics itself.

Parameters:

dimensions - dimension name, Point takes ownership of the array

location - dimension values, Point takes ownership of the array

Method Detail

emptyPoint

public static Point emptyPoint()

the canonical 0-dimensional Point.

buildParameters

private static com.yahoo.collections.Tuple2<String[],Value[]> buildParameters(Map<String,?> properties)

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

location

public List<Value> location()

Get an immutable list view of the values for each dimension.

dimensions

public List<String> dimensions()

Get an immutable list view of the names of each dimension.

dimensionality

public int dimensionality()

Get the number of dimensions defined for this Point, i.e. the size of the collection returned by dimensions().

getDimensions

String[] getDimensions()

package private accessor only for simplemetrics itself

getLocation

Value[] getLocation()

package private accessor only for simplemetrics itself