de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.query

Class GenericRStarTreeRangeQuery<O extends SpatialComparable,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.index.tree.spatial.rstarvariants.query.GenericRStarTreeRangeQuery<O,D>

All Implemented Interfaces:

DatabaseQuery, RangeQuery<O,D>

@Reference(authors="J. Kuan, P. Lewis",
           title="Fast k nearest neighbour search for R-tree family",
           booktitle="Proc. Int. Conf Information, Communications and Signal Processing, ICICS 1997",
           url="http://dx.doi.org/10.1109/ICICS.1997.652114")
public class GenericRStarTreeRangeQuery<O extends SpatialComparable,D extends Distance<D>>
extends AbstractDistanceRangeQuery<O,D>

Instance of a range query for a particular spatial index. Reference:

J. Kuan, P. Lewis
Fast k nearest neighbour search for R-tree family
In Proc. Int. Conf Information, Communications and Signal Processing, ICICS 1997

Field Summary

Fields

Modifier and Type	Field and Description
protected SpatialPrimitiveDistanceFunction<? super O,D>	distanceFunction Spatial primitive distance function
protected AbstractRStarTree<?,?,?>	tree The index to use

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
GenericRStarTreeRangeQuery(AbstractRStarTree<?,?,?> tree, SpatialDistanceQuery<O,D> distanceQuery) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected DistanceDBIDList<D>	doRangeQuery(O object, D epsilon) Perform the actual query process.
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, getRangeForDBID

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

Field Detail

tree

protected final AbstractRStarTree<?,?,?> tree

The index to use

distanceFunction

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

Spatial primitive distance function

Constructor Detail

GenericRStarTreeRangeQuery

public GenericRStarTreeRangeQuery(AbstractRStarTree<?,?,?> tree,
                          SpatialDistanceQuery<O,D> distanceQuery)

Constructor.

Parameters:

tree - Index to use

distanceQuery - Distance query to use

Method Detail

doRangeQuery

protected DistanceDBIDList<D> doRangeQuery(O object,
                               D epsilon)

Perform the actual query process.

Parameters:

object - Query object

epsilon - Query range

Returns:

Objects contained in query range.

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 extends SpatialComparable,D extends Distance<D>>

Specified by:

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

Parameters:

obj - Query object

range - Query range

Returns:

neighbors