Package elki.database.query.range

Class WrappedRangeDBIDByLookup<O>

java.lang.Object

elki.database.query.range.WrappedRangeDBIDByLookup<O>

Type Parameters:

O - relation object type

All Implemented Interfaces:

RangeSearcher<DBIDRef>

Direct Known Subclasses:

WrappedRangeDBIDByLookup.Linear

public class WrappedRangeDBIDByLookup<O>
extends java.lang.Object
implements RangeSearcher<DBIDRef>

Find radius neighbors by querying with the original object.

Since:

0.8.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	WrappedRangeDBIDByLookup.Linear<O>	Linear scan searcher.

Field Summary

Fields

Modifier and Type	Field	Description
private RangeSearcher<O>	inner	Inner radius searcher.
private Relation<? extends O>	relation	Data relation.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	WrappedRangeDBIDByLookup(Relation<? extends O> relation, RangeSearcher<O> inner)	Constructor.

Method Summary

Modifier and Type	Method	Description
ModifiableDoubleDBIDList	getRange(DBIDRef query, double range, ModifiableDoubleDBIDList result)	Get the neighbors for a particular id in a given query range.
static <O> RangeSearcher<DBIDRef>	wrap(Relation<? extends O> relation, RangeSearcher<O> inner)	Wrap a query, if not null.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface elki.database.query.range.RangeSearcher

getRange

Field Detail

relation

private Relation<? extends O> relation

Data relation.

inner

private RangeSearcher<O> inner

Inner radius searcher.

Constructor Detail

WrappedRangeDBIDByLookup

private WrappedRangeDBIDByLookup(Relation<? extends O> relation,
                                 RangeSearcher<O> inner)

Constructor.

Parameters:

relation - data relation

inner - inner radius searcher

Method Detail

getRange

public ModifiableDoubleDBIDList getRange(DBIDRef query,
                                         double range,
                                         ModifiableDoubleDBIDList result)

Description copied from interface: RangeSearcher

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

Specified by:

getRange in interface RangeSearcher<O>

Parameters:

query - query object ID

range - Query range

result - Output data structure

Returns:

neighbors

wrap

public static <O> RangeSearcher<DBIDRef> wrap(Relation<? extends O> relation,
                                              RangeSearcher<O> inner)

Wrap a query, if not null.

Type Parameters:

O - inner data type

Parameters:

relation - Relation to get object from

inner - inner query

Returns:

wrapped query, or null if inner was null