Package org.apache.lucene.backward_codecs.lucene50

Class Lucene50LiveDocsFormat

java.lang.Object

org.apache.lucene.codecs.LiveDocsFormat

org.apache.lucene.backward_codecs.lucene50.Lucene50LiveDocsFormat

public final class Lucene50LiveDocsFormat
extends LiveDocsFormat

Lucene 5.0 live docs format

The .liv file is optional, and only exists when a segment contains deletions.

Although per-segment, this file is maintained exterior to compound segment files.

Deletions (.liv) --> IndexHeader,Generation,Bits

• SegmentHeader --> IndexHeader
• Bits --> <Int64> ^LongCount

Field Summary

Fields

Modifier and Type	Field	Description
private static java.lang.String	CODEC_NAME	codec of live docs
private static java.lang.String	EXTENSION	extension of live docs
private static int	VERSION_CURRENT
private static int	VERSION_START	supported version range

Constructor Summary

Constructors

Constructor	Description
Lucene50LiveDocsFormat()	Sole constructor.

Method Summary

Modifier and Type	Method	Description
void	files(SegmentCommitInfo info, java.util.Collection<java.lang.String> files)	Records all files in use by this SegmentCommitInfo into the files argument.
private FixedBitSet	readFixedBitSet(IndexInput input, int length)
Bits	readLiveDocs(Directory dir, SegmentCommitInfo info, IOContext context)	Read live docs bits.
private int	writeBits(IndexOutput output, Bits bits)
void	writeLiveDocs(Bits bits, Directory dir, SegmentCommitInfo info, int newDelCount, IOContext context)	Note: although this format is only used on older versions, we need to keep the write logic in addition to the read logic.

Methods inherited from class java.lang.Object

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

Field Detail

EXTENSION

private static final java.lang.String EXTENSION

extension of live docs

See Also:

Constant Field Values

CODEC_NAME

private static final java.lang.String CODEC_NAME

codec of live docs

See Also:

Constant Field Values

VERSION_START

private static final int VERSION_START

supported version range

See Also:

Constant Field Values

VERSION_CURRENT

private static final int VERSION_CURRENT

See Also:

Constant Field Values

Constructor Detail

Lucene50LiveDocsFormat

public Lucene50LiveDocsFormat()

Sole constructor.

Method Detail

readLiveDocs

public Bits readLiveDocs(Directory dir,
                         SegmentCommitInfo info,
                         IOContext context)
                  throws java.io.IOException

Description copied from class: LiveDocsFormat

Read live docs bits.

Specified by:

readLiveDocs in class LiveDocsFormat

Throws:

java.io.IOException

readFixedBitSet

private FixedBitSet readFixedBitSet(IndexInput input,
                                    int length)
                             throws java.io.IOException

Throws:

java.io.IOException

writeLiveDocs

public void writeLiveDocs(Bits bits,
                          Directory dir,
                          SegmentCommitInfo info,
                          int newDelCount,
                          IOContext context)
                   throws java.io.IOException

Note: although this format is only used on older versions, we need to keep the write logic in addition to the read logic. When we delete documents that live in an older segment, we write to the live docs for that segment.

Specified by:

writeLiveDocs in class LiveDocsFormat

Throws:

java.io.IOException

writeBits

private int writeBits(IndexOutput output,
                      Bits bits)
               throws java.io.IOException

Throws:

java.io.IOException

files

public void files(SegmentCommitInfo info,
                  java.util.Collection<java.lang.String> files)
           throws java.io.IOException

Description copied from class: LiveDocsFormat

Records all files in use by this SegmentCommitInfo into the files argument.

Specified by:

files in class LiveDocsFormat

Throws:

java.io.IOException