org.apache.lucene.index

Class SegmentWriteState

java.lang.Object

org.apache.lucene.index.SegmentWriteState

public class SegmentWriteState
extends Object

Holder class for common parameters used during write.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Field Summary

Fields

Modifier and Type	Field and Description
IOContext	context IOContext for all writes; you should pass this to Directory.createOutput(String,IOContext).
int	delCountOnFlush Number of deleted documents set while flushing the segment.
Directory	directory Directory where this segment will be written to.
FieldInfos	fieldInfos FieldInfos describing all fields in this segment.
InfoStream	infoStream InfoStream used for debugging messages.
MutableBits	liveDocs MutableBits recording live documents; this is only set if there is one or more deleted documents.
org.apache.lucene.index.BufferedDeletes	segDeletes Deletes to apply while we are flushing the segment.
SegmentInfo	segmentInfo SegmentInfo describing this segment.
String	segmentSuffix Unique suffix for any postings files written for this segment.
int	termIndexInterval Expert: The fraction of terms in the "dictionary" which should be stored in RAM.

Constructor Summary

Constructors

Constructor and Description
SegmentWriteState(InfoStream infoStream, Directory directory, SegmentInfo segmentInfo, FieldInfos fieldInfos, int termIndexInterval, org.apache.lucene.index.BufferedDeletes segDeletes, IOContext context) Sole constructor.
SegmentWriteState(SegmentWriteState state, String segmentSuffix) Create a shallow SegmentWriteState copy final a format ID

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

infoStream

public final InfoStream infoStream

InfoStream used for debugging messages.

directory

public final Directory directory

Directory where this segment will be written to.

segmentInfo

public final SegmentInfo segmentInfo

SegmentInfo describing this segment.

fieldInfos

public final FieldInfos fieldInfos

FieldInfos describing all fields in this segment.

delCountOnFlush

public int delCountOnFlush

Number of deleted documents set while flushing the segment.

segDeletes

public final org.apache.lucene.index.BufferedDeletes segDeletes

Deletes to apply while we are flushing the segment. A Term is enrolled in here if it was deleted at one point, and it's mapped to the docIDUpto, meaning any docID < docIDUpto containing this term should be deleted.

liveDocs

public MutableBits liveDocs

MutableBits recording live documents; this is only set if there is one or more deleted documents.

segmentSuffix

public final String segmentSuffix

Unique suffix for any postings files written for this segment. PerFieldPostingsFormat sets this for each of the postings formats it wraps. If you create a new PostingsFormat then any files you write/read must be derived using this suffix (use IndexFileNames.segmentFileName(String,String,String)).

termIndexInterval

public int termIndexInterval

Expert: The fraction of terms in the "dictionary" which should be stored in RAM. Smaller values use more memory, but make searching slightly faster, while larger values use less memory and make searching slightly slower. Searching is typically not dominated by dictionary lookup, so tweaking this is rarely useful.

context

public final IOContext context

IOContext for all writes; you should pass this to Directory.createOutput(String,IOContext).

Constructor Detail

SegmentWriteState

public SegmentWriteState(InfoStream infoStream,
                 Directory directory,
                 SegmentInfo segmentInfo,
                 FieldInfos fieldInfos,
                 int termIndexInterval,
                 org.apache.lucene.index.BufferedDeletes segDeletes,
                 IOContext context)

Sole constructor.

SegmentWriteState

public SegmentWriteState(SegmentWriteState state,
                 String segmentSuffix)

Create a shallow SegmentWriteState copy final a format ID