org.apache.lucene.document

## Class FloatDocValuesField

- java.lang.Object
- - org.apache.lucene.document.Field
  - - org.apache.lucene.document.NumericDocValuesField
    - - org.apache.lucene.document.FloatDocValuesField

- All Implemented Interfaces:
    IndexableField

      public class FloatDocValuesField
      extends NumericDocValuesField

  Syntactic sugar for encoding floats as NumericDocValues via `Float.floatToRawIntBits(float)`.

  Per-document floating point values can be retrieved via `LeafReader.getNumericDocValues(String)`.

  NOTE: In most all cases this will be rather inefficient, requiring four bytes per document. Consider encoding floating point values yourself with only as much precision as you require.

- - ### 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.NumericDocValuesField

      `TYPE`

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

      `boost, fieldsData, name, tokenStream, type`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `FloatDocValuesField(String name, float value)` Creates a new DocValues field with the specified 32-bit float value

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `setFloatValue(float value)` Expert: change the value of this field.
    `void` | `setLongValue(long value)` Expert: change the value of this field.

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

      `newExactQuery, newRangeQuery`

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

      `binaryValue, boost, fieldType, name, numericValue, readerValue, setBoost, setBytesValue, setBytesValue, setByteValue, setDoubleValue, setIntValue, setReaderValue, setShortValue, setStringValue, setTokenStream, stringValue, tokenStream, tokenStreamValue, toString`

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

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

- - ### Constructor Detail

    - #### FloatDocValuesField

          public FloatDocValuesField(String name,
                                     float value)

      Creates a new DocValues field with the specified 32-bit float value
      Parameters:
        `name` - field name
        `value` - 32-bit float value
      Throws:
        `IllegalArgumentException` - if the field name is null

  - ### Method Detail

    - #### setFloatValue

          public void setFloatValue(float value)

      Description copied from class: `Field`
      Expert: change the value of this field. See `Field.setStringValue(String)`.
      Overrides:
        `setFloatValue` in class `Field`

    - #### setLongValue

          public void setLongValue(long value)

      Description copied from class: `Field`
      Expert: change the value of this field. See `Field.setStringValue(String)`.
      Overrides:
        `setLongValue` in class `Field`

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