Package org.apache.lucene.backward_codecs.lucene86

Class Lucene86PointsFormat

java.lang.Object
org.apache.lucene.codecs.PointsFormat
org.apache.lucene.backward_codecs.lucene86.Lucene86PointsFormat
public class Lucene86PointsFormat extends PointsFormat
Lucene 8.6 point format, which encodes dimensional values in a block KD-tree structure for fast 1D range and N dimensional shape intersection filtering. See this paper for details.

Data is stored across three files

  • A .kdm file that records metadata about the fields, such as numbers of dimensions or numbers of bytes per dimension.
  • A .kdi file that stores inner nodes of the tree.
  • A .kdd file that stores leaf nodes, where most of the data lives.
See this wiki for detailed data structures of the three files.
WARNING: This API is experimental and might change in incompatible ways in the next release.