Package org.apache.lucene.codecs.blocktreeords

Class BlockTreeOrdsPostingsFormat

java.lang.Object

org.apache.lucene.codecs.PostingsFormat

org.apache.lucene.codecs.blocktreeords.BlockTreeOrdsPostingsFormat

All Implemented Interfaces:

NamedSPILoader.NamedSPI

public class BlockTreeOrdsPostingsFormat
extends PostingsFormat

Uses OrdsBlockTreeTermsWriter with Lucene84PostingsWriter.

Field Summary

Fields

Modifier and Type	Field	Description
static int	BLOCK_SIZE	Fixed packed block size, number of integers encoded in a single packed block.
private int	maxTermBlockSize
private int	minTermBlockSize

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

EMPTY

Constructor Summary

Constructors

Constructor	Description
BlockTreeOrdsPostingsFormat()	Creates Lucene41PostingsFormat with default settings.
BlockTreeOrdsPostingsFormat(int minTermBlockSize, int maxTermBlockSize)	Creates Lucene41PostingsFormat with custom values for minBlockSize and maxBlockSize passed to block terms dictionary.

Method Summary

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

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

availablePostingsFormats, forName, getName, reloadPostingsFormats

Methods inherited from class java.lang.Object

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

Field Detail

minTermBlockSize

private final int minTermBlockSize

maxTermBlockSize

private final int maxTermBlockSize

BLOCK_SIZE

public static final int BLOCK_SIZE

Fixed packed block size, number of integers encoded in a single packed block.

See Also:

Constant Field Values

Constructor Detail

BlockTreeOrdsPostingsFormat

public BlockTreeOrdsPostingsFormat()

Creates Lucene41PostingsFormat with default settings.

BlockTreeOrdsPostingsFormat

public BlockTreeOrdsPostingsFormat(int minTermBlockSize,
                                   int maxTermBlockSize)

Creates Lucene41PostingsFormat with custom values for minBlockSize and maxBlockSize passed to block terms dictionary.

See Also:

OrdsBlockTreeTermsWriter(SegmentWriteState,PostingsWriterBase,int,int)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class PostingsFormat

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