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

Class AbstractDistanceRangeQuery<O>

java.lang.Object

de.lmu.ifi.dbs.elki.database.query.range.AbstractDistanceRangeQuery<O>

Type Parameters:

O - Database object type

All Implemented Interfaces:

DatabaseQuery, RangeQuery<O>

Direct Known Subclasses:

AbstractRefiningIndex.AbstractRangeQuery, InMemoryInvertedIndex.ArcCosineRangeQuery, InMemoryInvertedIndex.CosineRangeQuery, LinearScanDistanceRangeQuery, LinearScanPrimitiveDistanceRangeQuery, MetricalIndexRangeQuery, MinimalisticMemoryKDTree.KDTreeRangeQuery, ProjectedIndex.ProjectedRangeQuery

public abstract class AbstractDistanceRangeQuery<O>
extends Object
implements RangeQuery<O>

Abstract base class for range queries that use a distance query in their instance

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
protected DistanceQuery<O>	distanceQuery Hold the distance function to be used.
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
AbstractDistanceRangeQuery(DistanceQuery<O> distanceQuery) Constructor.

Method Summary

Modifier and Type	Method and Description
DoubleDBIDList	getRangeForDBID(DBIDRef id, double range) Get the nearest neighbors for a particular id in a given query range
abstract DoubleDBIDList	getRangeForObject(O obj, double range) Get the nearest neighbors for a particular object in a given query range

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

distanceQuery

protected final DistanceQuery<O> distanceQuery

Hold the distance function to be used.

Constructor Detail

AbstractDistanceRangeQuery

public AbstractDistanceRangeQuery(DistanceQuery<O> distanceQuery)

Constructor.

Parameters:

distanceQuery - Distance query

Method Detail

getRangeForDBID

public DoubleDBIDList getRangeForDBID(DBIDRef id,
                                      double range)

Description copied from interface: RangeQuery

Get the nearest neighbors for a particular id in a given query range

Specified by:

getRangeForDBID in interface RangeQuery<O>

Parameters:

id - query object ID

range - Query range

Returns:

neighbors

getRangeForObject

public abstract DoubleDBIDList getRangeForObject(O obj,
                                                 double range)

Description copied from interface: RangeQuery

Get the nearest neighbors for a particular object in a given query range

Specified by:

getRangeForObject in interface RangeQuery<O>

Parameters:

obj - Query object

range - Query range

Returns:

neighbors