eu.stratosphere.core.testing.fuzzy

Class DoubleValueSimilarity

java.lang.Object

eu.stratosphere.core.testing.fuzzy.AbstractValueSimilarity<eu.stratosphere.types.DoubleValue>

eu.stratosphere.core.testing.fuzzy.DoubleValueSimilarity

All Implemented Interfaces:

ValueSimilarity<eu.stratosphere.types.DoubleValue>

public class DoubleValueSimilarity
extends AbstractValueSimilarity<eu.stratosphere.types.DoubleValue>

Computes the difference between double values and returns ValueSimilarity.NO_MATCH if the difference is * above a given threshold.

Field Summary

Fields inherited from interface eu.stratosphere.core.testing.fuzzy.ValueSimilarity

NO_MATCH

Constructor Summary

Constructors

Constructor and Description
DoubleValueSimilarity(double delta) Initializes DoubleValueSimilarity with the given threshold.

Method Summary

Methods

Modifier and Type	Method and Description
double	getDelta() Returns the threshold.
double	getDistance(eu.stratosphere.types.DoubleValue value1, eu.stratosphere.types.DoubleValue value2) Returns the distance between the first and the second value or ValueSimilarity.NO_MATCH.

Methods inherited from class eu.stratosphere.core.testing.fuzzy.AbstractValueSimilarity

isApplicable

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoubleValueSimilarity

public DoubleValueSimilarity(double delta)

Initializes DoubleValueSimilarity with the given threshold.

Parameters:

delta - the threshold defining the maximum allowed difference.

Method Detail

getDelta

public double getDelta()

Returns the threshold.

Returns:

the threshold

getDistance

public double getDistance(eu.stratosphere.types.DoubleValue value1,
                 eu.stratosphere.types.DoubleValue value2)

Description copied from interface: ValueSimilarity

Returns the distance between the first and the second value or ValueSimilarity.NO_MATCH.

Parameters:

value1 - the first value

value2 - the second value

Returns:

a positive value corresponding to the distance or ValueSimilarity.NO_MATCH