org.apache.lucene.queries.function.valuesource

## Class BytesRefFieldSource

- java.lang.Object
- - org.apache.lucene.queries.function.ValueSource
  - - org.apache.lucene.queries.function.valuesource.FieldCacheSource
    - - org.apache.lucene.queries.function.valuesource.BytesRefFieldSource

-     public class BytesRefFieldSource
      extends FieldCacheSource

  An implementation for retrieving `FunctionValues` instances for string based fields.

- - ### Field Summary

    - ### Fields inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource

      `field`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `BytesRefFieldSource(String field)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `FunctionValues` | `getValues(Map context, LeafReaderContext readerContext)` Gets the values for this reader and the context that was previously passed to createWeight().

    - ### Methods inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource

      `description, equals, getField, hashCode`

    - ### Methods inherited from class org.apache.lucene.queries.function.ValueSource

      `asDoubleValuesSource, asLongValuesSource, createWeight, fromDoubleValuesSource, getSortField, newContext, toString`

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

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

- - ### Constructor Detail

    - #### BytesRefFieldSource

          public BytesRefFieldSource(String field)

  - ### Method Detail

    - #### getValues

          public FunctionValues getValues(Map context,
                                          LeafReaderContext readerContext)
                                   throws IOException

      Description copied from class: `ValueSource`
      Gets the values for this reader and the context that was previously passed to createWeight(). The values must be consumed in a forward docID manner, and you must call this method again to iterate through the values again.
      Specified by:
        `getValues` in class `ValueSource`
      Throws:
        `IOException`

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