de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.query

Class MetricalIndexRangeQuery<O,D extends NumberDistance<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.metrical.mtreevariants.query.MetricalIndexRangeQuery<O,D>

All Implemented Interfaces:

DatabaseQuery, RangeQuery<O,D>

public class MetricalIndexRangeQuery<O,D extends NumberDistance<D,?>>
extends AbstractDistanceRangeQuery<O,D>

Instance of a range query for a particular spatial index.

Field Summary

Fields

Modifier and Type	Field and Description
protected AbstractMTree<O,D,?,?,?>	index 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
MetricalIndexRangeQuery(AbstractMTree<O,D,?,?,?> index, DistanceQuery<O,D> distanceQuery) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
private void	doRangeQuery(DBID o_p, AbstractMTreeNode<O,D,?,?> node, O q, D r_q, GenericDistanceDBIDList<D> result) Performs a range query on the specified subtree.
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

index

protected final AbstractMTree<O,D extends NumberDistance<D,?>,?,?,?> index

The index to use

Constructor Detail

MetricalIndexRangeQuery

public MetricalIndexRangeQuery(AbstractMTree<O,D,?,?,?> index,
                       DistanceQuery<O,D> distanceQuery)

Constructor.

Parameters:

index - Index to use

distanceQuery - Distance query used

Method Detail

doRangeQuery

private void doRangeQuery(DBID o_p,
                AbstractMTreeNode<O,D,?,?> node,
                O q,
                D r_q,
                GenericDistanceDBIDList<D> result)

Performs a range query on the specified subtree. It recursively traverses all paths from the specified node, which cannot be excluded from leading to qualifying objects.

Parameters:

o_p - the routing object of the specified node

node - the root of the subtree to be traversed

q - the id of the query object

r_q - the query range

result - the list holding the query results

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 NumberDistance<D,?>>

Specified by:

getRangeForObject in class AbstractDistanceRangeQuery<O,D extends NumberDistance<D,?>>

Parameters:

obj - Query object

range - Query range

Returns:

neighbors