de.lmu.ifi.dbs.elki.database.query.distance

Class AbstractDistanceQuery<O>

java.lang.Object

de.lmu.ifi.dbs.elki.database.query.distance.AbstractDistanceQuery<O>

All Implemented Interfaces:

DatabaseQuery, DistanceQuery<O>

Direct Known Subclasses:

AbstractDatabaseDistanceQuery, PrimitiveDistanceQuery

public abstract class AbstractDistanceQuery<O>
extends Object
implements DistanceQuery<O>

A distance query serves as adapter layer for database and primitive distances.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
protected Relation<? extends O>	relation The data to use for this query

Fields inherited from interface de.lmu.ifi.dbs.elki.database.query.DatabaseQuery

HINT_BULK, HINT_EXACT, HINT_HEAVY_USE, HINT_NO_CACHE, HINT_OPTIMIZED_ONLY, HINT_SINGLE

Constructor Summary

Constructors

Constructor and Description
AbstractDistanceQuery(Relation<? extends O> relation) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
abstract double	distance(DBIDRef id1, DBIDRef id2) Returns the distance between the two objects specified by their object ids.
abstract double	distance(DBIDRef id1, O o2) Returns the distance between the two objects specified by their object ids.
abstract double	distance(O o1, DBIDRef id2) Returns the distance between the two objects specified by their object ids.
abstract double	distance(O o1, O o2) Returns the distance between the two objects specified by their object ids.
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

Methods inherited from interface de.lmu.ifi.dbs.elki.database.query.distance.DistanceQuery

getDistanceFunction

Field Detail

relation

protected final Relation<? extends O> relation

The data to use for this query

Constructor Detail

AbstractDistanceQuery

public AbstractDistanceQuery(Relation<? extends O> relation)

Constructor.

Parameters:

relation - Relation to use.

Method Detail

distance

public abstract double distance(DBIDRef id1,
              DBIDRef id2)

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 abstract double distance(O o1,
              DBIDRef id2)

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 abstract double distance(DBIDRef id1,
              O o2)

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 abstract double distance(O o1,
              O o2)

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