Class Lucene40SegmentInfoFormat
Lucene 4.0 Segment info format.
Files:
- .si: Header, SegVersion, SegSize, IsCompoundFile, Diagnostics, Attributes, Files
- Header --> CodecHeader (WriteHeader(DataOutput, string, int))
- SegSize --> Int32 (WriteInt32(int))
- SegVersion --> String (WriteString(string))
- Files --> ISet<String> (WriteStringSet(ISet<string>))
- Diagnostics, Attributes --> IDictionary<String,String> (WriteStringStringMap(IDictionary<string, string>))
- IsCompoundFile --> Int8 (WriteByte(byte))
- 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.
Note
This API is experimental and might change in incompatible ways in the next release.
Inherited Members
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 : SegmentInfoFormatConstructors
Lucene40SegmentInfoFormat()
Sole constructor.
Declaration
public Lucene40SegmentInfoFormat()See Also
Fields
SI_EXTENSION
File extension used to store SegmentInfo.
Declaration
public const string SI_EXTENSION = "si"Field Value
| Type | Description |
|---|---|
| string |
See Also
Properties
SegmentInfoReader
Returns the SegmentInfoReader for reading SegmentInfo instances.
Declaration
public override SegmentInfoReader SegmentInfoReader { get; }Property Value
| Type | Description |
|---|---|
| SegmentInfoReader |
Overrides
See Also
SegmentInfoWriter
Returns the SegmentInfoWriter for writing SegmentInfo instances.
Declaration
public override SegmentInfoWriter SegmentInfoWriter { get; }Property Value
| Type | Description |
|---|---|
| SegmentInfoWriter |