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

Class PrimitiveDistanceQuery<O,D extends Distance<D>>

java.lang.Object

de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery<O>

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

de.lmu.ifi.dbs.elki.database.query.distance.PrimitiveDistanceQuery<O,D>

Type Parameters:

O - Database object type.

D - Distance result type.

All Implemented Interfaces:

DatabaseQuery, DistanceQuery<O,D>

Direct Known Subclasses:

PrimitiveDistanceSimilarityQuery, SpatialPrimitiveDistanceQuery

public class PrimitiveDistanceQuery<O,D extends Distance<D>>
extends AbstractDistanceQuery<O,D>

Run a database query in a database context.

Field Summary

Fields

Modifier and Type	Field and Description
protected PrimitiveDistanceFunction<? super O,D>	distanceFunction The distance function we use.

Fields inherited from class de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery

relation

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
PrimitiveDistanceQuery(Relation<? extends O> relation, PrimitiveDistanceFunction<? super O,D> distanceFunction) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
D	distance(DBID id1, DBID id2) Returns the distance between the two objects specified by their object ids.
D	distance(DBID id1, O o2) Returns the distance between the two objects specified by their object ids.
D	distance(O o1, DBID id2) Returns the distance between the two objects specified by their object ids.
D	distance(O o1, O o2) Returns the distance between the two objects specified by their object ids.
PrimitiveDistanceFunction<? super O,D>	getDistanceFunction() Get the inner distance function.

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.distance.AbstractDistanceQuery

getDistanceFactory, infiniteDistance, nullDistance, undefinedDistance

Methods inherited from class de.lmu.ifi.dbs.elki.database.query.AbstractDataBasedQuery

getRelation

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

getRelation

Field Detail

distanceFunction

protected final PrimitiveDistanceFunction<? super O,D extends Distance<D>> distanceFunction

The distance function we use.

Constructor Detail

PrimitiveDistanceQuery

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

Constructor.

Parameters:

relation - Representation to use.

distanceFunction - Our distance function

Method Detail

distance

public D distance(DBID id1,
         DBID id2)

Description copied from class: AbstractDistanceQuery

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

Specified by:

distance in interface DistanceQuery<O,D extends Distance<D>>

Specified by:

distance in class AbstractDistanceQuery<O,D extends Distance<D>>

Parameters:

id1 - first object id

id2 - second object id

Returns:

the distance between the two objects specified by their object ids

distance

public D distance(O o1,
         DBID id2)

Description copied from class: AbstractDistanceQuery

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

Specified by:

distance in interface DistanceQuery<O,D extends Distance<D>>

Specified by:

distance in class AbstractDistanceQuery<O,D extends Distance<D>>

Parameters:

o1 - first object

id2 - second object id

Returns:

the distance between the two objects specified by their object ids

distance

public D distance(DBID id1,
         O o2)

Description copied from class: AbstractDistanceQuery

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

Specified by:

distance in interface DistanceQuery<O,D extends Distance<D>>

Specified by:

distance in class AbstractDistanceQuery<O,D extends Distance<D>>

Parameters:

id1 - first object id

o2 - second object

Returns:

the distance between the two objects specified by their object ids

distance

public D distance(O o1,
         O o2)

Description copied from class: AbstractDistanceQuery

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

Specified by:

distance in interface DistanceQuery<O,D extends Distance<D>>

Specified by:

distance in class AbstractDistanceQuery<O,D extends Distance<D>>

Parameters:

o1 - first object

o2 - second object

Returns:

the distance between the two objects specified by their object ids

getDistanceFunction

public PrimitiveDistanceFunction<? super O,D> getDistanceFunction()

Description copied from interface: DistanceQuery

Get the inner distance function.

Returns:

Distance function