Lucene86PointsFormat (Lucene 9.0.0 backward-codecs API)

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.

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`DATA_EXTENSION`	Filename extension for the leaf blocks
`static String`	`INDEX_EXTENSION`	Filename extension for the index per field
`static String`	`META_EXTENSION`	Filename extension for the meta per field

Fields inherited from class org.apache.lucene.codecs.PointsFormat
EMPTY

Constructor Summary

Constructors
Constructor Description

Lucene86PointsFormat()
Sole constructor

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`PointsReader`	`fieldsReader(SegmentReadState state)`
`PointsWriter`	`fieldsWriter(SegmentWriteState state)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DATA_EXTENSION
```
public static final String DATA_EXTENSION
```
    Filename extension for the leaf blocks
    
    See Also:
    
    Constant Field Values
  - INDEX_EXTENSION
```
public static final String INDEX_EXTENSION
```
    Filename extension for the index per field
    
    See Also:
    
    Constant Field Values
  - META_EXTENSION
```
public static final String META_EXTENSION
```
    Filename extension for the meta per field
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Lucene86PointsFormat
```
public Lucene86PointsFormat()
```
    Sole constructor
- Method Detail
  - fieldsWriter
```
public PointsWriter fieldsWriter(SegmentWriteState state)
                          throws IOException
```
    Specified by:
    
    fieldsWriter in class PointsFormat
    
    Throws:
    
    IOException
  - fieldsReader
```
public PointsReader fieldsReader(SegmentReadState state)
                          throws IOException
```
    Specified by:
    
    fieldsReader in class PointsFormat
    
    Throws:
    
    IOException