de.lmu.ifi.dbs.elki.distance.distancefunction

Class AbstractIndexBasedDistanceFunction.Instance<O,I extends Index,F extends DistanceFunction<? super O>>

java.lang.Object

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractIndexBasedDistanceFunction.Instance<O,I,F>

Type Parameters:

O - Object type

I - Index type

F - Distance function type

All Implemented Interfaces:

DatabaseQuery, DatabaseDistanceQuery<O>, DistanceQuery<O>, IndexBasedDistanceFunction.Instance<O,I>

Direct Known Subclasses:

SharedNearestNeighborJaccardDistanceFunction.Instance

Enclosing class:

AbstractIndexBasedDistanceFunction<O,F extends IndexFactory<O>>

public abstract static class AbstractIndexBasedDistanceFunction.Instance<O,I extends Index,F extends DistanceFunction<? super O>>
extends java.lang.Object
implements IndexBasedDistanceFunction.Instance<O,I>

The actual instance bound to a particular database.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
protected I	index Index we use
protected F	parent Our parent distance function
protected Relation<O>	relation Relation to 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
Instance(Relation<O> relation, I index, F parent) Constructor.

Method Summary

Modifier and Type	Method and Description
F	getDistanceFunction() Get the inner distance function.
I	getIndex() Get the index used.
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.DatabaseDistanceQuery

distance, distance, distance

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

distance

Field Detail

relation

protected final Relation<O> relation

Relation to query.

index

protected final I extends Index index

Index we use

parent

protected F extends DistanceFunction<? super O> parent

Our parent distance function

Constructor Detail

Instance

public Instance(Relation<O> relation,
                I index,
                F parent)

Constructor.

Parameters:

relation - Database

index - Index to use

parent - Parent distance function

Method Detail

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

getIndex

public I getIndex()

Description copied from interface: IndexBasedDistanceFunction.Instance

Get the index used.

Specified by:

getIndex in interface IndexBasedDistanceFunction.Instance<O,I extends Index>

Returns:

the index used

getDistanceFunction

public F getDistanceFunction()

Description copied from interface: DistanceQuery

Get the inner distance function.

Specified by:

getDistanceFunction in interface DistanceQuery<O>

Returns:

Distance function