org.apache.lucene.codecs.blockterms

Class LuceneVarGapDocFreqInterval

java.lang.Object

org.apache.lucene.codecs.PostingsFormat

org.apache.lucene.codecs.blockterms.LuceneVarGapDocFreqInterval

All Implemented Interfaces:

NamedSPILoader.NamedSPI

public final class LuceneVarGapDocFreqInterval
extends PostingsFormat

Customized version of Lucene50PostingsFormat that uses VariableGapTermsIndexWriter with a fixed interval, but forcing high docfreq terms to be indexed terms.

Field Summary

Fields inherited from class org.apache.lucene.codecs.PostingsFormat

EMPTY

Constructor Summary

Constructors

Constructor and Description
LuceneVarGapDocFreqInterval()
LuceneVarGapDocFreqInterval(int docFreqThreshold, int termIndexInterval)

Method Summary

Modifier and Type	Method and Description
FieldsConsumer	fieldsConsumer(SegmentWriteState state) Writes a new segment
FieldsProducer	fieldsProducer(SegmentReadState state) Reads a segment.

Methods inherited from class org.apache.lucene.codecs.PostingsFormat

availablePostingsFormats, forName, getName, reloadPostingsFormats, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

LuceneVarGapDocFreqInterval

public LuceneVarGapDocFreqInterval()

LuceneVarGapDocFreqInterval

public LuceneVarGapDocFreqInterval(int docFreqThreshold,
                                   int termIndexInterval)

Method Detail

fieldsConsumer

public FieldsConsumer fieldsConsumer(SegmentWriteState state)
                              throws java.io.IOException

Description copied from class: PostingsFormat

Writes a new segment

Specified by:

fieldsConsumer in class PostingsFormat

Throws:

java.io.IOException

fieldsProducer

public FieldsProducer fieldsProducer(SegmentReadState state)
                              throws java.io.IOException

Description copied from class: PostingsFormat

Reads a segment. 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:

fieldsProducer in class PostingsFormat

Throws:

java.io.IOException