org.apache.lucene.codecs.lucene42

Class Lucene42NormsFormat

java.lang.Object

org.apache.lucene.codecs.NormsFormat

org.apache.lucene.codecs.lucene42.Lucene42NormsFormat

Deprecated.

only for reading old 4.x segments

@Deprecated
public class Lucene42NormsFormat
extends NormsFormat

Lucene 4.2 score normalization format.

Constructor Summary

Constructors

Constructor and Description
Lucene42NormsFormat() Deprecated. Calls Lucene42DocValuesFormat(PackedInts.FASTEST)
Lucene42NormsFormat(float acceptableOverheadRatio) Deprecated. Creates a new Lucene42DocValuesFormat with the specified acceptableOverheadRatio for NumericDocValues.

Method Summary

Modifier and Type	Method and Description
NormsConsumer	normsConsumer(SegmentWriteState state) Deprecated. Returns a NormsConsumer to write norms to the index.
NormsProducer	normsProducer(SegmentReadState state) Deprecated. Returns a NormsProducer to read norms from the index.

Methods inherited from class java.lang.Object

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

Constructor Detail

Lucene42NormsFormat

public Lucene42NormsFormat()

Deprecated.

Calls Lucene42DocValuesFormat(PackedInts.FASTEST)

Lucene42NormsFormat

public Lucene42NormsFormat(float acceptableOverheadRatio)

Deprecated.

Creates a new Lucene42DocValuesFormat with the specified acceptableOverheadRatio for NumericDocValues.

Parameters:

acceptableOverheadRatio - compression parameter for numerics. Currently this is only used when the number of unique values is small.

Method Detail

normsConsumer

public NormsConsumer normsConsumer(SegmentWriteState state)
                            throws IOException

Deprecated.

Description copied from class: NormsFormat

Returns a NormsConsumer to write norms to the index.

Specified by:

normsConsumer in class NormsFormat

Throws:

IOException

normsProducer

public final NormsProducer normsProducer(SegmentReadState state)
                                  throws IOException

Deprecated.

Description copied from class: NormsFormat

Returns a NormsProducer to read norms from the index.

NOTE: by the time this call returns, it must hold open any files it will need to use; else, those files may be deleted. Additionally, required files may be deleted during the execution of this call before there is a chance to open them. Under these circumstances an IOException should be thrown by the implementation. IOExceptions are expected and will automatically cause a retry of the segment opening logic with the newly revised segments.

Specified by:

normsProducer in class NormsFormat

Throws:

IOException