Class Lucene86SegmentInfoFormat
- java.lang.Object
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- org.apache.lucene.codecs.SegmentInfoFormat
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- org.apache.lucene.backward_codecs.lucene86.Lucene86SegmentInfoFormat
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public class Lucene86SegmentInfoFormat extends SegmentInfoFormat
Lucene 8.6 Segment info format.Files:
.si
: Header, SegVersion, SegSize, IsCompoundFile, Diagnostics, Files, Attributes, IndexSort, Footer
- Header -->
IndexHeader
- SegSize -->
Int32
- SegVersion -->
String
- SegMinVersion -->
String
- Files -->
Set<String>
- Diagnostics,Attributes -->
Map<String,String>
- IsCompoundFile -->
Int8
- IndexSort -->
Int32
count, followed bycount
SortField - SortField -->
String
sort class, followed by a per-sort bytestream (seeSortFieldProvider.readSortField(DataInput)
) - Footer -->
CodecFooter
- SegVersion is the code version that created the segment.
- SegMinVersion is the minimum code version that contributed documents to the segment.
- SegSize is the number of documents contained in the segment index.
- IsCompoundFile records whether the segment is written as a compound file or not. If this is -1, the segment is not a compound file. If it is 1, the segment is a compound file.
- The Diagnostics Map is privately written by
IndexWriter
, as a debugging aid, for each segment it creates. It includes metadata like the current Lucene version, OS, Java version, why the segment was created (merge, flush, addIndexes), etc. - Files is a list of files referred to by this segment.
- See Also:
SegmentInfos
- WARNING: This API is experimental and might change in incompatible ways in the next release.
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Field Summary
Fields Modifier and Type Field Description static String
SI_EXTENSION
File extension used to storeSegmentInfo
.
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Constructor Summary
Constructors Constructor Description Lucene86SegmentInfoFormat()
Sole constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description SegmentInfo
read(Directory dir, String segment, byte[] segmentID, IOContext context)
void
write(Directory dir, SegmentInfo si, IOContext ioContext)
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Field Detail
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SI_EXTENSION
public static final String SI_EXTENSION
File extension used to storeSegmentInfo
.- See Also:
- Constant Field Values
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Method Detail
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read
public SegmentInfo read(Directory dir, String segment, byte[] segmentID, IOContext context) throws IOException
- Specified by:
read
in classSegmentInfoFormat
- Throws:
IOException
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write
public void write(Directory dir, SegmentInfo si, IOContext ioContext) throws IOException
- Specified by:
write
in classSegmentInfoFormat
- Throws:
IOException
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