Package elki.database.query.distance

Class DBIDRangeDistanceQuery

java.lang.Object

elki.database.query.distance.DBIDDistanceQuery

elki.database.query.distance.DBIDRangeDistanceQuery

All Implemented Interfaces:

DatabaseDistanceQuery<DBID>, DistanceQuery<DBID>

public class DBIDRangeDistanceQuery
extends DBIDDistanceQuery

Run a distance query based on DBIDRanges

Since:

0.7.0

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field	Description
protected DBIDRangeDistance	distanceFunction	The distance function we use.
protected DBIDRange	range	The DBID range we are accessing.

Fields inherited from class elki.database.query.distance.DBIDDistanceQuery

relation

Constructor Summary

Constructors

Constructor	Description
DBIDRangeDistanceQuery(Relation<DBID> relation, DBIDRangeDistance distanceFunction)	Constructor.

Method Summary

Modifier and Type	Method	Description
double	distance(DBIDRef id1, DBIDRef id2)	Returns the distance between the two objects specified by their object ids.
DBIDDistance	getDistance()	Get the inner distance function.

Methods inherited from class elki.database.query.distance.DBIDDistanceQuery

getRelation

Methods inherited from class java.lang.Object

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

Methods inherited from interface elki.database.query.distance.DatabaseDistanceQuery

distance, distance, distance

Field Detail

distanceFunction

protected final DBIDRangeDistance distanceFunction

The distance function we use.

range

protected final DBIDRange range

The DBID range we are accessing.

Constructor Detail

DBIDRangeDistanceQuery

public DBIDRangeDistanceQuery(Relation<DBID> relation,
                              DBIDRangeDistance distanceFunction)

Constructor.

Parameters:

relation - Database to use.

distanceFunction - Our distance function

Method Detail

distance

public double distance(DBIDRef id1,
                       DBIDRef id2)

Description copied from interface: DistanceQuery

Returns the distance between the two objects specified by their object ids.

Specified by:

distance in interface DistanceQuery<DBID>

Overrides:

distance in class DBIDDistanceQuery

Parameters:

id1 - first object id

id2 - second object id

Returns:

the distance between the two objects specified by their object ids

getDistance

public DBIDDistance getDistance()

Description copied from interface: DistanceQuery

Get the inner distance function.

Specified by:

getDistance in interface DistanceQuery<DBID>

Overrides:

getDistance in class DBIDDistanceQuery

Returns:

Distance function