FSTTermsReader (Lucene 9.0.0 codecs API)

java.lang.Object
- org.apache.lucene.index.Fields
- - org.apache.lucene.codecs.FieldsProducer
  - - org.apache.lucene.codecs.memory.FSTTermsReader

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<String>
```
public class FSTTermsReader
extends FieldsProducer
```
FST-based terms dictionary reader.
The FST directly maps each term and its metadata, it is memory resident.

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

Field Summary
- Fields inherited from class org.apache.lucene.index.Fields
  EMPTY_ARRAY

Constructor Summary

Constructors
Constructor Description

FSTTermsReader(SegmentReadState state, PostingsReaderBase postingsReader)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`checkIntegrity()`
`void`	`close()`
`Iterator<String>`	`iterator()`
`int`	`size()`
`Terms`	`terms(String field)`
`String`	`toString()`

Methods inherited from class org.apache.lucene.codecs.FieldsProducer
getMergeInstance

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

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Constructor Detail
  - FSTTermsReader
```
public FSTTermsReader(SegmentReadState state,
                      PostingsReaderBase postingsReader)
               throws IOException
```
    Throws:
    
    IOException
- Method Detail
  - iterator
```
public Iterator<String> iterator()
```
    Specified by:
    
    iterator in interface Iterable<String>
    
    Specified by:
    
    iterator in class Fields
  - terms
```
public Terms terms(String field)
            throws IOException
```
    Specified by:
    
    terms in class Fields
    
    Throws:
    
    IOException
  - size
```
public int size()
```
    Specified by:
    
    size in class Fields
  - close
```
public void close()
           throws IOException
```
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface Closeable
    
    Specified by:
    
    close in class FieldsProducer
    
    Throws:
    
    IOException
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - checkIntegrity
```
public void checkIntegrity()
                    throws IOException
```
    Specified by:
    
    checkIntegrity in class FieldsProducer
    
    Throws:
    
    IOException