/// <summary>
/// Constructor which takes segment suffix.
/// </summary>
/// <seealso cref="SegmentWriteState(InfoStream, Directory, SegmentInfo, FieldInfos, int,
/// BufferedUpdates, IOContext)"/>
public SegmentWriteState(InfoStream infoStream, Directory directory, SegmentInfo segmentInfo, FieldInfos fieldInfos, int termIndexInterval, BufferedUpdates segUpdates, IOContext context, string segmentSuffix)
{
this.InfoStream = infoStream;
this.SegUpdates = segUpdates;
this.Directory = directory;
this.SegmentInfo = segmentInfo;
this.FieldInfos = fieldInfos;
this.TermIndexInterval = termIndexInterval;
this.SegmentSuffix = segmentSuffix;
this.Context = context;
}
/// <summary>
/// Create a shallow copy of <see cref="SegmentWriteState"/> with a new segment suffix. </summary>
public SegmentWriteState(SegmentWriteState state, string segmentSuffix)
{
InfoStream = state.InfoStream;
Directory = state.Directory;
SegmentInfo = state.SegmentInfo;
FieldInfos = state.FieldInfos;
TermIndexInterval = state.TermIndexInterval;
Context = state.Context;
this.SegmentSuffix = segmentSuffix;
SegUpdates = state.SegUpdates;
DelCountOnFlush = state.DelCountOnFlush;
}
/// <summary>
/// Save a single segment's info. </summary>
public override void Write(Directory dir, SegmentInfo si, FieldInfos fis, IOContext ioContext)
{
string fileName = IndexFileNames.SegmentFileName(si.Name, "", Lucene46SegmentInfoFormat.SI_EXTENSION);
si.AddFile(fileName);
IndexOutput output = dir.CreateOutput(fileName, ioContext);
bool success = false;
try
{
CodecUtil.WriteHeader(output, Lucene46SegmentInfoFormat.CODEC_NAME, Lucene46SegmentInfoFormat.VERSION_CURRENT);
// Write the Lucene version that created this segment, since 3.1
output.WriteString(si.Version);
output.WriteInt32(si.DocCount);
output.WriteByte((byte)(sbyte)(si.UseCompoundFile ? SegmentInfo.YES : SegmentInfo.NO));
output.WriteStringStringMap(si.Diagnostics);
output.WriteStringSet(si.GetFiles());
CodecUtil.WriteFooter(output);
success = true;
}
finally
{
if (!success)
{
IOUtils.DisposeWhileHandlingException(output);
si.Dir.DeleteFile(fileName);
}
else
{
output.Dispose();
}
}
}
/// <summary> /// Returns a <see cref="StoredFieldsReader"/> to load stored /// fields. /// </summary> public abstract StoredFieldsReader FieldsReader(Directory directory, SegmentInfo si, FieldInfos fn, IOContext context);
/// <summary> /// Writes the provided <see cref="FieldInfos"/> to the /// directory. /// </summary> public abstract void Write(Directory directory, string segmentName, string segmentSuffix, FieldInfos infos, IOContext context);
public override StoredFieldsWriter FieldsWriter(Directory directory, SegmentInfo si, IOContext context)
{
return(new CompressingStoredFieldsWriter(directory, si, segmentSuffix, context, formatName, compressionMode, chunkSize));
}
public override StoredFieldsReader FieldsReader(Directory directory, SegmentInfo si, FieldInfos fn, IOContext context)
{
return(new CompressingStoredFieldsReader(directory, si, segmentSuffix, fn, context, formatName, compressionMode));
}
/// <summary> /// Returns a <see cref="TermVectorsWriter"/> to write term /// vectors. /// </summary> public abstract TermVectorsWriter VectorsWriter(Directory directory, SegmentInfo segmentInfo, IOContext context);
/// <summary> /// Read the <see cref="FieldInfos"/> previously written with /// <see cref="FieldInfosWriter"/>. /// </summary> public abstract FieldInfos Read(Directory directory, string segmentName, string segmentSuffix, IOContext iocontext);
public override StoredFieldsReader FieldsReader(Directory directory, SegmentInfo si, FieldInfos fn, IOContext context)
{
return(new Lucene40StoredFieldsReader(directory, si, fn, context));
}
/// <summary>
/// Create a <see cref="SegmentReadState"/>. </summary>
public SegmentReadState(Directory dir, SegmentInfo info, FieldInfos fieldInfos, IOContext context, int termsIndexDivisor, string segmentSuffix)
{
this.Directory = dir;
this.SegmentInfo = info;
this.FieldInfos = fieldInfos;
this.Context = context;
this.TermsIndexDivisor = termsIndexDivisor;
this.SegmentSuffix = segmentSuffix;
}
/// <summary>
/// Create a <see cref="SegmentReadState"/>. </summary>
public SegmentReadState(Directory dir, SegmentInfo info, FieldInfos fieldInfos, IOContext context, int termsIndexDivisor)
: this(dir, info, fieldInfos, context, termsIndexDivisor, "")
{
}
/// <summary>
/// Sole constructor. </summary>
public SegmentWriteState(InfoStream infoStream, Directory directory, SegmentInfo segmentInfo, FieldInfos fieldInfos, int termIndexInterval, BufferedUpdates segUpdates, IOContext context)
: this(infoStream, directory, segmentInfo, fieldInfos, termIndexInterval, segUpdates, context, "")
{
}
public override TermVectorsWriter VectorsWriter(Directory directory, SegmentInfo segmentInfo, IOContext context)
{
return(new Lucene40TermVectorsWriter(directory, segmentInfo.Name, context));
}
public override TermVectorsReader VectorsReader(Directory directory, SegmentInfo segmentInfo, FieldInfos fieldInfos, IOContext context)
{
return(new Lucene40TermVectorsReader(directory, segmentInfo, fieldInfos, context));
}
/// <summary> /// Returns a <see cref="StoredFieldsWriter"/> to write stored /// fields. /// </summary> public abstract StoredFieldsWriter FieldsWriter(Directory directory, SegmentInfo si, IOContext context);
/// <summary> /// Write <see cref="SegmentInfo"/> data. </summary> /// <exception cref="System.IO.IOException"> If an I/O error occurs. </exception> public abstract void Write(Directory dir, SegmentInfo info, FieldInfos fis, IOContext ioContext);
/// <summary> /// Returns a <see cref="TermVectorsReader"/> to read term /// vectors. /// </summary> public abstract TermVectorsReader VectorsReader(Directory directory, SegmentInfo segmentInfo, FieldInfos fieldInfos, IOContext context);
public override StoredFieldsWriter FieldsWriter(Directory directory, SegmentInfo si, IOContext context)
{
return(new Lucene40StoredFieldsWriter(directory, si.Name, context));
}
/// <summary> /// Read <see cref="SegmentInfo"/> data from a directory. </summary> /// <param name="directory"> Directory to read from. </param> /// <param name="segmentName"> Name of the segment to read. </param> /// <param name="context"> IO context. </param> /// <returns> Infos instance to be populated with data. </returns> /// <exception cref="System.IO.IOException"> If an I/O error occurs. </exception> public abstract SegmentInfo Read(Directory directory, string segmentName, IOContext context);
