Class Lucene40SegmentInfoFormat

Lucene 4.0 Segment info format.

Files:

  • .si: Header, SegVersion, SegSize, IsCompoundFile, Diagnostics, Attributes, Files

Data types:

Field Descriptions:

  • SegVersion is the code version that created 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.
  • Checksum contains the CRC32 checksum of all bytes in the segments_N file up until the checksum. This is used to verify integrity of the file on opening the index.
  • 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, .NET/Java version, why the segment was created (merge, flush, addIndexes), etc.
  • Attributes: a key-value map of codec-private attributes.
  • Files is a list of files referred to by this segment.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk
Inheritance
System.Object
SegmentInfoFormat
Lucene40SegmentInfoFormat
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: Lucene.Net.Codecs.Lucene40
Assembly: Lucene.Net.dll
Syntax
[Obsolete("Only for reading old 4.0-4.5 segments, and supporting IndexWriter.AddIndexes()")]
public class Lucene40SegmentInfoFormat : SegmentInfoFormat

Constructors

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Lucene40SegmentInfoFormat()

Sole constructor.

Declaration
public Lucene40SegmentInfoFormat()

Fields

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SI_EXTENSION

File extension used to store SegmentInfo.

Declaration
public const string SI_EXTENSION = "si"
Field Value
Type Description
System.String

Properties

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SegmentInfoReader

Declaration
public override SegmentInfoReader SegmentInfoReader { get; }
Property Value
Type Description
SegmentInfoReader
Overrides
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SegmentInfoWriter

Declaration
public override SegmentInfoWriter SegmentInfoWriter { get; }
Property Value
Type Description
SegmentInfoWriter
Overrides

See Also