Package org.apache.lucene.index

# Enum Class IndexOptions

java.lang.Object
java.lang.Enum<IndexOptions>
org.apache.lucene.index.IndexOptions

All Implemented Interfaces:
  `Serializable`, `Comparable<IndexOptions>`, `Constable`

public enum IndexOptions extends Enum<IndexOptions>
Controls how much information is stored in the postings lists.

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

## Nested Class Summary

## Nested classes/interfaces inherited from class java.lang.Enum

`Enum.EnumDesc<E extends Enum<E>>`

## Enum Constant Summary

Enum Constants
Enum Constant
Description
`DOCS`
Only documents are indexed: term frequencies and positions are omitted.
`DOCS_AND_FREQS`
Only documents and term frequencies are indexed: positions are omitted.
`DOCS_AND_FREQS_AND_POSITIONS`
Indexes documents, frequencies and positions.
`DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS`
Indexes documents, frequencies, positions and offsets.
`NONE`
Not indexed

## Method Summary

Modifier and Type
Method
Description
`static IndexOptions`
`valueOf(String name)`
Returns the enum constant of this class with the specified name.
`static IndexOptions[]`
`values()`
Returns an array containing the constants of this enum class, in the order they are declared.

### Methods inherited from class java.lang.Enum

`clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf`

### Methods inherited from class java.lang.Object

`getClass, notify, notifyAll, wait, wait, wait`

## Enum Constant Details

### NONE

public static final IndexOptions NONE
Not indexed

### DOCS

public static final IndexOptions DOCS
Only documents are indexed: term frequencies and positions are omitted. Phrase and other positional queries on the field will throw an exception, and scoring will behave as if any term in the document appears only once.

### DOCS_AND_FREQS

public static final IndexOptions DOCS_AND_FREQS
Only documents and term frequencies are indexed: positions are omitted. This enables normal scoring, except Phrase and other positional queries will throw an exception.

### DOCS_AND_FREQS_AND_POSITIONS

public static final IndexOptions DOCS_AND_FREQS_AND_POSITIONS
Indexes documents, frequencies and positions. This is a typical default for full-text search: full scoring is enabled and positional queries are supported.

### DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS

public static final IndexOptions DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS
Indexes documents, frequencies, positions and offsets. Character offsets are encoded alongside the positions.

## Method Details

### values

public static IndexOptions[] values()
Returns an array containing the constants of this enum class, in the order they are declared.

Returns:
  an array containing the constants of this enum class, in the order they are declared

### valueOf

public static IndexOptions valueOf(String name)
Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:
  `name` - the name of the enum constant to be returned.
Returns:
  the enum constant with the specified name
Throws:
  `IllegalArgumentException` - if this enum class has no constant with the specified name
  `NullPointerException` - if the argument is null