Package org.springframework.data.geo

Class Distance

java.lang.Object

org.springframework.data.geo.Distance

All Implemented Interfaces:

Serializable, Comparable<Distance>

public final class Distance
extends Object
implements Serializable, Comparable<Distance>

Value object to represent distances in a given metric.

Since:

1.8

Author:

Oliver Gierke, Thomas Darimont

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Distance(double value)	Creates a new Distance with a neutral metric.
Distance(double value, Metric metric)	Creates a new Distance with the given Metric.

Method Summary

Modifier and Type	Method	Description
Distance	add(Distance other)	Adds the given distance to the current one.
Distance	add(Distance other, Metric metric)	Adds the given Distance to the current one and forces the result to be in a given Metric.
static Range<Distance>	between(double minValue, Metric minMetric, double maxValue, Metric maxMetric)	Creates a new Range by creating minimum and maximum Distance from the given values.
static Range<Distance>	between(Distance min, Distance max)	Creates a Range between the given Distance.
int	compareTo(Distance that)
boolean	equals(Object o)
Metric	getMetric()
double	getNormalizedValue()	Returns the normalized value regarding the underlying Metric.
String	getUnit()	Returns a String representation of the unit the distance is in.
double	getValue()
int	hashCode()
Distance	in(Metric metric)	Returns a new Distance in the given Metric.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

Distance

public Distance(double value)

Creates a new Distance with a neutral metric. This means the provided value needs to be in normalized form.

Parameters:

value -

Distance

public Distance(double value,
 Metric metric)

Creates a new Distance with the given Metric.

Parameters:

value -

metric - must not be null.

Method Details

between

public static Range<Distance> between(Distance min,
 Distance max)

Creates a Range between the given Distance.

Parameters:

min - can be null.

max - can be null.

Returns:

will never be null.

between

public static Range<Distance> between(double minValue,
 Metric minMetric,
 double maxValue,
 Metric maxMetric)

Creates a new Range by creating minimum and maximum Distance from the given values.

Parameters:

minValue -

minMetric - can be null.

maxValue -

maxMetric - can be null.

Returns:

getNormalizedValue

public double getNormalizedValue()

Returns the normalized value regarding the underlying Metric.

Returns:

getUnit

public String getUnit()

Returns a String representation of the unit the distance is in.

Returns:

the unit

See Also:

• Metric.getAbbreviation()

add

public Distance add(Distance other)

Adds the given distance to the current one. The resulting Distance will be in the same metric as the current one.

Parameters:

other - must not be null.

Returns:

add

public Distance add(Distance other,
 Metric metric)

Adds the given Distance to the current one and forces the result to be in a given Metric.

Parameters:

other - must not be null.

metric - must not be null.

Returns:

in

public Distance in(Metric metric)

Returns a new Distance in the given Metric. This means that the returned instance will have the same normalized value as the original instance.

Parameters:

metric - must not be null.

Returns:

compareTo

public int compareTo(@Nullable
 Distance that)

Specified by:

compareTo in interface Comparable<Distance>

toString

public String toString()

Overrides:

toString in class Object

getValue

public double getValue()

getMetric

public Metric getMetric()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object