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

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

java.lang.Object

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

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

de.lmu.ifi.dbs.elki.database.query.range.LinearScanPrimitiveDistanceRangeQuery<O,D>

Type Parameters:

O - Database object type

D - Distance type

All Implemented Interfaces:

DatabaseQuery, RangeQuery<O,D>

public class LinearScanPrimitiveDistanceRangeQuery<O,D extends Distance<D>>
extends AbstractDistanceRangeQuery<O,D>

Default linear scan range query class. Subtle optimization: for primitive distances, retrieve the query object only once from the relation.

Field Summary

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

distanceQuery

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
LinearScanPrimitiveDistanceRangeQuery(PrimitiveDistanceQuery<O,D> distanceQuery) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
DistanceDBIDList<D>	getRangeForDBID(DBIDRef id, D range) Get the nearest neighbors for a particular id in a given query range
DistanceDBIDList<D>	getRangeForObject(O obj, D range) Get the nearest neighbors for a particular object in a given query range

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

getDistanceFactory

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

Constructor Detail

LinearScanPrimitiveDistanceRangeQuery

public LinearScanPrimitiveDistanceRangeQuery(PrimitiveDistanceQuery<O,D> distanceQuery)

Constructor.

Parameters:

distanceQuery - Distance function to use

Method Detail

getRangeForDBID

public DistanceDBIDList<D> getRangeForDBID(DBIDRef id,
                                  D 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,D extends Distance<D>>

Overrides:

getRangeForDBID in class AbstractDistanceRangeQuery<O,D extends Distance<D>>

Parameters:

id - query object ID

range - Query range

Returns:

neighbors

getRangeForObject

public DistanceDBIDList<D> getRangeForObject(O obj,
                                    D 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,D extends Distance<D>>

Specified by:

getRangeForObject in class AbstractDistanceRangeQuery<O,D extends Distance<D>>

Parameters:

obj - Query object

range - Query range

Returns:

neighbors