Package org.apache.lucene.geo

Class GeoEncodingUtils.DistancePredicate

java.lang.Object

org.apache.lucene.geo.GeoEncodingUtils.Grid

org.apache.lucene.geo.GeoEncodingUtils.DistancePredicate

Enclosing class:

GeoEncodingUtils

public static class GeoEncodingUtils.DistancePredicate
extends GeoEncodingUtils.Grid

A predicate that checks whether a given point is within a distance of another point.

Field Summary

Fields

Modifier and Type	Field	Description
private double	distanceKey
private double	lat
private double	lon

Fields inherited from class org.apache.lucene.geo.GeoEncodingUtils.Grid

ARITY, latBase, latShift, lonBase, lonShift, maxLatDelta, maxLonDelta, relations

Constructor Summary

Constructors

Modifier	Constructor	Description
private	DistancePredicate(int latShift, int lonShift, int latBase, int lonBase, int maxLatDelta, int maxLonDelta, byte[] relations, double lat, double lon, double distanceKey)

Method Summary

Modifier and Type	Method	Description
boolean	test(int lat, int lon)	Check whether the given point is within a distance of another point.

Methods inherited from class java.lang.Object

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

Field Detail

lat

private final double lat

lon

private final double lon

distanceKey

private final double distanceKey

Constructor Detail

DistancePredicate

private DistancePredicate(int latShift,
                          int lonShift,
                          int latBase,
                          int lonBase,
                          int maxLatDelta,
                          int maxLonDelta,
                          byte[] relations,
                          double lat,
                          double lon,
                          double distanceKey)

Method Detail

test

public boolean test(int lat,
                    int lon)

Check whether the given point is within a distance of another point. NOTE: this operates directly on the encoded representation of points.