org.apache.lucene.collation

## Class CollationDocValuesField

- java.lang.Object
- - org.apache.lucene.document.Field
  - - org.apache.lucene.collation.CollationDocValuesField

- All Implemented Interfaces:
    IndexableField

      public final class CollationDocValuesField
      extends Field

  Indexes collation keys as a single-valued `SortedDocValuesField`.

  This is more efficient that `CollationKeyAnalyzer` if the field only has one value: no uninversion is necessary to sort on the field, locale-sensitive range queries can still work via `DocValuesRangeQuery`, and the underlying data structures built at index-time are likely more efficient and use less memory than FieldCache.

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class org.apache.lucene.document.Field

      `Field.Store`

  - ### Field Summary

    - ### Fields inherited from class org.apache.lucene.document.Field

      `fieldsData, tokenStream, type`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `CollationDocValuesField(String name, Collator collator)` Create a new ICUCollationDocValuesField.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `String` | `name()`
    `void` | `setStringValue(String value)`

    - ### Methods inherited from class org.apache.lucene.document.Field

      `binaryValue, fieldType, getCharSequenceValue, numericValue, readerValue, setBytesValue, setBytesValue, setByteValue, setDoubleValue, setFloatValue, setIntValue, setLongValue, setReaderValue, setShortValue, setTokenStream, stringValue, tokenStream, tokenStreamValue, toString`

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

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### CollationDocValuesField

          public CollationDocValuesField(String name,
                                         Collator collator)

      Create a new ICUCollationDocValuesField.

      NOTE: you should not create a new one for each document, instead just make one and reuse it during your indexing process, setting the value via `setStringValue(String)`.

      Parameters:
        `name` - field name
        `collator` - Collator for generating collation keys.

  - ### Method Detail

    - #### name

          public String name()

      Specified by:
        `name` in interface `IndexableField`
      Overrides:
        `name` in class `Field`

    - #### setStringValue

          public void setStringValue(String value)

      Overrides:
        `setStringValue` in class `Field`

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