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