Package org.apache.lucene.index
Enum IndexOptions
- java.lang.Object
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- java.lang.Enum<IndexOptions>
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- org.apache.lucene.index.IndexOptions
 
 
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- All Implemented Interfaces:
- Serializable,- Comparable<IndexOptions>
 
 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.
 
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Enum Constant SummaryEnum Constants Enum Constant Description DOCSOnly documents are indexed: term frequencies and positions are omitted.DOCS_AND_FREQSOnly documents and term frequencies are indexed: positions are omitted.DOCS_AND_FREQS_AND_POSITIONSIndexes documents, frequencies and positions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETSIndexes documents, frequencies, positions and offsets.NONENot indexed
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Method SummaryAll Methods Static Methods Concrete Methods Modifier and Type Method Description static IndexOptionsvalueOf(String name)Returns the enum constant of this type with the specified name.static IndexOptions[]values()Returns an array containing the constants of this enum type, in the order they are declared.
 
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Enum Constant Detail- 
NONEpublic static final IndexOptions NONE Not indexed
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DOCSpublic 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.
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DOCS_AND_FREQSpublic 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.
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DOCS_AND_FREQS_AND_POSITIONSpublic 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.
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DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETSpublic static final IndexOptions DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS Indexes documents, frequencies, positions and offsets. Character offsets are encoded alongside the positions.
 
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Method Detail- 
valuespublic static IndexOptions[] values() Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (IndexOptions c : IndexOptions.values()) System.out.println(c); - Returns:
- an array containing the constants of this enum type, in the order they are declared
 
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valueOfpublic static IndexOptions valueOf(String name) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name
- NullPointerException- if the argument is null
 
 
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