de.lmu.ifi.dbs.elki.database.query.distance
Class DBIDDistanceQuery<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.AbstractDatabaseDistanceQuery<DBID,D>
              de.lmu.ifi.dbs.elki.database.query.distance.DBIDDistanceQuery<D>

Type Parameters:

D - Distance result type.

All Implemented Interfaces:

DatabaseQuery, DistanceQuery<DBID,D>

public class DBIDDistanceQuery<D extends Distance<D>>
extends AbstractDatabaseDistanceQuery<DBID,D>

Run a distance query based on DBIDs

Field Summary

protected DBIDDistanceFunction<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

DBIDDistanceQuery(Relation<DBID> relation, DBIDDistanceFunction<D> distanceFunction)
Constructor.

Method Summary

D	distance(DBID id1, DBID id2) Returns the distance between the two objects specified by their object ids.
DBIDDistanceFunction<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 DBIDDistanceFunction<D extends Distance<D>> distanceFunction

The distance function we use.

Constructor Detail

DBIDDistanceQuery

public DBIDDistanceQuery(Relation<DBID> relation,
                         DBIDDistanceFunction<D> distanceFunction)

Constructor.

Parameters:

relation - Database 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<DBID,D extends Distance<D>>

Overrides:

distance in class AbstractDatabaseDistanceQuery<DBID,D extends Distance<D>>

Parameters:

id1 - first object

id2 - second object

Returns:

the distance between the two objects specified by their object ids

getDistanceFunction

public DBIDDistanceFunction<D> getDistanceFunction()

Description copied from interface: DistanceQuery

Get the inner distance function.

Returns:

Distance function