Package elki.database.query.distance

Class PrimitiveDistanceQuery<O>

java.lang.Object

elki.database.query.distance.PrimitiveDistanceQuery<O>

Type Parameters:

O - Database object type.

All Implemented Interfaces:

DistanceQuery<O>

Direct Known Subclasses:

PrimitiveDistanceSimilarityQuery, SpatialPrimitiveDistanceQuery

public class PrimitiveDistanceQuery<O>
extends java.lang.Object
implements DistanceQuery<O>

Run a database query in a database context.

Since:

0.4.0

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field	Description
protected PrimitiveDistance<? super O>	distanceFunction	The distance function we use.
protected Relation<? extends O>	relation	The data to use for this query

Constructor Summary

Constructors

Constructor	Description
PrimitiveDistanceQuery(Relation<? extends O> relation, PrimitiveDistance<? super O> 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.
double	distance(DBIDRef id1, O o2)	Returns the distance between the two objects specified by their object ids.
double	distance(O o1, DBIDRef id2)	Returns the distance between the two objects specified by their object ids.
double	distance(O o1, O o2)	Returns the distance between the two objects specified by their object ids.
PrimitiveDistance<? super O>	getDistance()	Get the inner distance function.
Relation<? extends O>	getRelation()	Access the underlying data query.

Methods inherited from class java.lang.Object

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

Field Detail

relation

protected final Relation<? extends O> relation

The data to use for this query

distanceFunction

protected final PrimitiveDistance<? super O> distanceFunction

The distance function we use.

Constructor Detail

PrimitiveDistanceQuery

public PrimitiveDistanceQuery(Relation<? extends O> relation,
                              PrimitiveDistance<? super O> distanceFunction)

Constructor.

Parameters:

relation - Representation to use.

distanceFunction - Our distance function

Method Detail

distance

public final 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<O>

Parameters:

id1 - first object id

id2 - second object id

Returns:

the distance between the two objects specified by their object ids

distance

public final double distance(O o1,
                             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<O>

Parameters:

o1 - first object

id2 - second object id

Returns:

the distance between the two objects specified by their object ids

distance

public final double distance(DBIDRef id1,
                             O o2)

Description copied from interface: DistanceQuery

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

Specified by:

distance in interface DistanceQuery<O>

Parameters:

id1 - first object id

o2 - second object

Returns:

the distance between the two objects specified by their object ids

distance

public double distance(O o1,
                       O o2)

Description copied from interface: DistanceQuery

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

Specified by:

distance in interface DistanceQuery<O>

Parameters:

o1 - first object

o2 - second object

Returns:

the distance between the two objects specified by their object ids

getRelation

public Relation<? extends O> getRelation()

Description copied from interface: DistanceQuery

Access the underlying data query.

Specified by:

getRelation in interface DistanceQuery<O>

Returns:

data query in use

getDistance

public PrimitiveDistance<? super O> getDistance()

Description copied from interface: DistanceQuery

Get the inner distance function.

Specified by:

getDistance in interface DistanceQuery<O>

Returns:

Distance function