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## org.apache.lucene.facet.codecs.facet42
Class Facet42DocValuesFormat

    java.lang.Object
      org.apache.lucene.codecs.DocValuesFormat
          org.apache.lucene.facet.codecs.facet42.Facet42DocValuesFormat

All Implemented Interfaces:
  NamedSPILoader.NamedSPI

    public final class Facet42DocValuesFormat

extends DocValuesFormat

DocValues format that only handles binary doc values and is optimized for usage with facets. It uses more RAM than other formats in exchange for faster lookups.

NOTE: this format cannot handle more than 2 GB of facet data in a single segment. If your usage may hit this limit, you can either use Lucene's default DocValuesFormat, limit the maximum segment size in your MergePolicy, or send us a patch fixing the limitation.

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

Field Summary
`static String` | `CODEC`
`static String` | `EXTENSION`
`static int` | `VERSION_CURRENT`
`static int` | `VERSION_START`

Constructor Summary
`Facet42DocValuesFormat()`

Method Summary
`DocValuesConsumer` | `fieldsConsumer(SegmentWriteState state)`
`DocValuesProducer` | `fieldsProducer(SegmentReadState state)`

Methods inherited from class org.apache.lucene.codecs.DocValuesFormat
`availableDocValuesFormats, forName, getName, reloadDocValuesFormats, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### CODEC

    public static final String CODEC

See Also:
  Constant Field Values

### EXTENSION

    public static final String EXTENSION

See Also:
  Constant Field Values

### VERSION_START

    public static final int VERSION_START

See Also:
  Constant Field Values

### VERSION_CURRENT

    public static final int VERSION_CURRENT

See Also:
  Constant Field Values

Constructor Detail

### Facet42DocValuesFormat

    public Facet42DocValuesFormat()

Method Detail

### fieldsConsumer

    public DocValuesConsumer fieldsConsumer(SegmentWriteState state)
                                     throws IOException

  Specified by:
    `fieldsConsumer` in class `DocValuesFormat`
  Throws:
    `IOException`

### fieldsProducer

    public DocValuesProducer fieldsProducer(SegmentReadState state)
                                     throws IOException

  Specified by:
    `fieldsProducer` in class `DocValuesFormat`
  Throws:
    `IOException`

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