org.apache.lucene.document

Class LatLonPointDistanceQuery

java.lang.Object

org.apache.lucene.search.Query

org.apache.lucene.document.LatLonPointDistanceQuery

final class LatLonPointDistanceQuery
extends Query

Distance query for LatLonPoint.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) java.lang.String	field
(package private) double	latitude
(package private) double	longitude
(package private) double	radiusMeters

Constructor Summary

Constructors

Constructor and Description
LatLonPointDistanceQuery(java.lang.String field, double latitude, double longitude, double radiusMeters)

Method Summary

Modifier and Type	Method and Description
Weight	createWeight(IndexSearcher searcher, boolean needsScores) Expert: Constructs an appropriate Weight implementation for this query.
boolean	equals(java.lang.Object other) Override and implement query instance equivalence properly in a subclass.
private boolean	equalsTo(LatLonPointDistanceQuery other)
java.lang.String	getField()
double	getLatitude()
double	getLongitude()
double	getRadiusMeters()
int	hashCode() Override and implement query hash code properly in a subclass.
(package private) static double	sortKey(double radius) binary search to find the exact sortKey needed to match the specified radius any sort key <= this is a query match.
java.lang.String	toString(java.lang.String field) Prints a query to a string, with field assumed to be the default field and omitted.

Methods inherited from class org.apache.lucene.search.Query

classHash, rewrite, sameClassAs, toString

Methods inherited from class java.lang.Object

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

Field Detail

field

final java.lang.String field

latitude

final double latitude

longitude

final double longitude

radiusMeters

final double radiusMeters

Constructor Detail

LatLonPointDistanceQuery

public LatLonPointDistanceQuery(java.lang.String field,
                                double latitude,
                                double longitude,
                                double radiusMeters)

Method Detail

createWeight

public Weight createWeight(IndexSearcher searcher,
                           boolean needsScores)
                    throws java.io.IOException

Description copied from class: Query

Expert: Constructs an appropriate Weight implementation for this query.

Only implemented by primitive queries, which re-write to themselves.

Overrides:

createWeight in class Query

needsScores - True if document scores (Scorer.score()) or match frequencies (Scorer.freq()) are needed.

Throws:

java.io.IOException

sortKey

static double sortKey(double radius)

binary search to find the exact sortKey needed to match the specified radius any sort key <= this is a query match.

getField

public java.lang.String getField()

getLatitude

public double getLatitude()

getLongitude

public double getLongitude()

getRadiusMeters

public double getRadiusMeters()

hashCode

public int hashCode()

Description copied from class: Query

Override and implement query hash code properly in a subclass. This is required so that QueryCache works properly.

Specified by:

hashCode in class Query

See Also:

Query.equals(Object)

equals

public boolean equals(java.lang.Object other)

Description copied from class: Query

Override and implement query instance equivalence properly in a subclass. This is required so that QueryCache works properly. Typically a query will be equal to another only if it's an instance of the same class and its document-filtering properties are identical that other instance. Utility methods are provided for certain repetitive code.

Specified by:

equals in class Query

See Also:

Query.sameClassAs(Object), Query.classHash()

equalsTo

private boolean equalsTo(LatLonPointDistanceQuery other)

toString

public java.lang.String toString(java.lang.String field)

Description copied from class: Query

Prints a query to a string, with field assumed to be the default field and omitted.

Specified by:

toString in class Query