Package org.apache.lucene.document

Class FloatPointNearestNeighbor

java.lang.Object

org.apache.lucene.document.FloatPointNearestNeighbor

public class FloatPointNearestNeighbor
extends java.lang.Object

KNN search on top of N dimensional indexed float points.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	FloatPointNearestNeighbor.Cell
(package private) static class	FloatPointNearestNeighbor.NearestHit	Holds one hit from nearest(java.util.List<org.apache.lucene.util.bkd.BKDReader>, java.util.List<org.apache.lucene.util.Bits>, java.util.List<java.lang.Integer>, int, float[])
private static class	FloatPointNearestNeighbor.NearestVisitor

Constructor Summary

Constructors

Constructor	Description
FloatPointNearestNeighbor()

Method Summary

Modifier and Type	Method	Description
private static FloatPointNearestNeighbor.NearestHit[]	nearest(java.util.List<BKDReader> readers, java.util.List<Bits> liveDocs, java.util.List<java.lang.Integer> docBases, int topN, float[] origin)
static TopFieldDocs	nearest(IndexSearcher searcher, java.lang.String field, int topN, float... origin)
private static double	pointToRectangleDistanceSquared(byte[] minPackedValue, byte[] maxPackedValue, float[] value)

Methods inherited from class java.lang.Object

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

Constructor Detail

FloatPointNearestNeighbor

public FloatPointNearestNeighbor()

Method Detail

nearest

private static FloatPointNearestNeighbor.NearestHit[] nearest(java.util.List<BKDReader> readers,
                                                              java.util.List<Bits> liveDocs,
                                                              java.util.List<java.lang.Integer> docBases,
                                                              int topN,
                                                              float[] origin)
                                                       throws java.io.IOException

Throws:

java.io.IOException

pointToRectangleDistanceSquared

private static double pointToRectangleDistanceSquared(byte[] minPackedValue,
                                                      byte[] maxPackedValue,
                                                      float[] value)

nearest

public static TopFieldDocs nearest(IndexSearcher searcher,
                                   java.lang.String field,
                                   int topN,
                                   float... origin)
                            throws java.io.IOException

Throws:

java.io.IOException