Package org.apache.lucene.util.bkd
package org.apache.lucene.util.bkd
Block KD-tree, implementing the generic spatial data structure described in this paper.
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ClassDescriptionBasic parameters for indexing points on the BKD tree.Offline Radix selector for BKD tree.Sliced reference to points in an PointWriter.Handles reading a block KD-tree in byte[] space previously written with
BKDWriter.Recursively builds a block KD-tree to assign all incoming points in N-dim space to smaller and smaller N-dim rectangles (cells) until the number of points in a given rectangle is <=config.maxPointsInLeafNode.Utility class to read buffered points from in-heap arrays.Utility class to write new points into in-heap arrays.Utility APIs for sorting and partitioning buffered points.Reads points from disk in a fixed-with format, previously written withOfflinePointWriter.Writes points to disk in a fixed-with format.One pass iterator through all points previously written with aPointWriter, abstracting away whether points are read from (offline) disk or simple arrays in heap.Represents a dimensional point value written in the BKD tree.Appends many points, and then at the end provides aPointReaderto iterate those points.