DirectPostingsFormat (Lucene 9.0.0 codecs API)

java.lang.Object
- org.apache.lucene.codecs.PostingsFormat
- - org.apache.lucene.codecs.memory.DirectPostingsFormat

All Implemented Interfaces:

NamedSPILoader.NamedSPI
```
public final class DirectPostingsFormat
extends PostingsFormat
```
Wraps Lucene90PostingsFormat format for on-disk storage, but then at read time loads and stores all terms and postings directly in RAM as byte[], int[].
WARNING: This is exceptionally RAM intensive: it makes no effort to compress the postings data, storing terms as separate byte[] and postings as separate int[], but as a result it gives substantial increase in search performance.
This postings format supports TermsEnum.ord() and TermsEnum.seekExact(long).
Because this holds all term bytes as a single byte[], you cannot have more than 2.1GB worth of term bytes in a single segment.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Field Summary
- Fields inherited from class org.apache.lucene.codecs.PostingsFormat
  EMPTY

Constructor Summary

Constructors
Constructor	Description
`DirectPostingsFormat()`
`DirectPostingsFormat(int minSkipCount, int lowFreqCutoff)`	minSkipCount is how many terms in a row must have the same prefix before we put a skip pointer down.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`FieldsConsumer`	`fieldsConsumer(SegmentWriteState state)`
`FieldsProducer`	`fieldsProducer(SegmentReadState state)`

Methods inherited from class org.apache.lucene.codecs.PostingsFormat
availablePostingsFormats, forName, getName, reloadPostingsFormats, toString

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

- Constructor Detail
  - DirectPostingsFormat
```
public DirectPostingsFormat()
```
  - DirectPostingsFormat
```
public DirectPostingsFormat(int minSkipCount,
                            int lowFreqCutoff)
```
    minSkipCount is how many terms in a row must have the same prefix before we put a skip pointer down. Terms with docFreq <= lowFreqCutoff will use a single int[] to hold all docs, freqs, position and offsets; terms with higher docFreq will use separate arrays.
- Method Detail
  - fieldsConsumer
```
public FieldsConsumer fieldsConsumer(SegmentWriteState state)
                              throws IOException
```
    Specified by:
    
    fieldsConsumer in class PostingsFormat
    
    Throws:
    
    IOException
  - fieldsProducer
```
public FieldsProducer fieldsProducer(SegmentReadState state)
                              throws IOException
```
    Specified by:
    
    fieldsProducer in class PostingsFormat
    
    Throws:
    
    IOException