/// <summary> Save this segment's info.</summary>
internal void Write(IndexOutput output)
{
output.WriteString(name);
output.WriteInt(docCount);
output.WriteLong(delGen);
output.WriteInt(docStoreOffset);
if (docStoreOffset != -1)
{
output.WriteString(docStoreSegment);
output.WriteByte((byte)(docStoreIsCompoundFile?1:0));
}
output.WriteByte((byte)(hasSingleNormFile?1:0));
if (normGen == null)
{
output.WriteInt(NO);
}
else
{
output.WriteInt(normGen.Length);
for (int j = 0; j < normGen.Length; j++)
{
output.WriteLong(normGen[j]);
}
}
output.WriteByte((byte)isCompoundFile);
output.WriteInt(delCount);
output.WriteByte((byte)(hasProx?1:0));
output.WriteStringStringMap(diagnostics);
}
private void MergeNorms()
{
byte[] normBuffer = null;
IndexOutput output = null;
try
{
int numFieldInfos = fieldInfos.Size();
for (int i = 0; i < numFieldInfos; i++)
{
FieldInfo fi = fieldInfos.FieldInfo(i);
if (fi.isIndexed && !fi.omitNorms)
{
if (output == null)
{
output = directory.CreateOutput(segment + "." + IndexFileNames.NORMS_EXTENSION);
output.WriteBytes(NORMS_HEADER, NORMS_HEADER.Length);
}
for (System.Collections.IEnumerator iter = readers.GetEnumerator(); iter.MoveNext();)
{
IndexReader reader = (IndexReader)iter.Current;
int maxDoc = reader.MaxDoc();
if (normBuffer == null || normBuffer.Length < maxDoc)
{
// the buffer is too small for the current segment
normBuffer = new byte[maxDoc];
}
reader.Norms(fi.name, normBuffer, 0);
if (!reader.HasDeletions())
{
//optimized case for segments without deleted docs
output.WriteBytes(normBuffer, maxDoc);
}
else
{
// this segment has deleted docs, so we have to
// check for every doc if it is deleted or not
for (int k = 0; k < maxDoc; k++)
{
if (!reader.IsDeleted(k))
{
output.WriteByte(normBuffer[k]);
}
}
}
checkAbort.Work(maxDoc);
}
}
}
}
finally
{
if (output != null)
{
output.Close();
}
}
}
/// <summary>Write as a d-gaps list </summary>
private void WriteDgaps(IndexOutput output)
{
output.WriteInt(-1); // mark using d-gaps
output.WriteInt(Size()); // write size
output.WriteInt(Count()); // write count
int last = 0;
int n = Count();
int m = bits.Length;
for (int i = 0; i < m && n > 0; i++)
{
if (bits[i] != 0)
{
output.WriteVInt(i - last);
output.WriteByte(bits[i]);
last = i;
n -= BYTE_COUNTS[bits[i] & 0xFF];
}
}
}
public void Write(IndexOutput output)
{
output.WriteVInt(CURRENT_FORMAT);
output.WriteVInt(Size());
for (int i = 0; i < Size(); i++)
{
FieldInfo fi = FieldInfo(i);
byte bits = (byte)(0x0);
if (fi.isIndexed)
{
bits |= IS_INDEXED;
}
if (fi.storeTermVector)
{
bits |= STORE_TERMVECTOR;
}
if (fi.storePositionWithTermVector)
{
bits |= STORE_POSITIONS_WITH_TERMVECTOR;
}
if (fi.storeOffsetWithTermVector)
{
bits |= STORE_OFFSET_WITH_TERMVECTOR;
}
if (fi.omitNorms)
{
bits |= OMIT_NORMS;
}
if (fi.storePayloads)
{
bits |= STORE_PAYLOADS;
}
if (fi.omitTermFreqAndPositions)
{
bits |= OMIT_TERM_FREQ_AND_POSITIONS;
}
output.WriteString(fi.name);
output.WriteByte(bits);
}
}
public void Write(IndexOutput output)
{
output.WriteVInt(CURRENT_FORMAT);
output.WriteVInt(Size());
for (int i = 0; i < Size(); i++)
{
FieldInfo fi = FieldInfo(i);
byte bits = (byte) (0x0);
if (fi.isIndexed)
bits |= IS_INDEXED;
if (fi.storeTermVector)
bits |= STORE_TERMVECTOR;
if (fi.storePositionWithTermVector)
bits |= STORE_POSITIONS_WITH_TERMVECTOR;
if (fi.storeOffsetWithTermVector)
bits |= STORE_OFFSET_WITH_TERMVECTOR;
if (fi.omitNorms)
bits |= OMIT_NORMS;
if (fi.storePayloads)
bits |= STORE_PAYLOADS;
if (fi.omitTermFreqAndPositions)
bits |= OMIT_TERM_FREQ_AND_POSITIONS;
output.WriteString(fi.name);
output.WriteByte(bits);
}
}
/// <summary>Produce _X.nrm if any document had a field with norms
/// not disabled
/// </summary>
public override void Flush(System.Collections.IDictionary threadsAndFields, SegmentWriteState state)
{
System.Collections.IDictionary byField = new System.Collections.Hashtable();
// Typically, each thread will have encountered the same
// field. So first we collate by field, ie, all
// per-thread field instances that correspond to the
// same FieldInfo
System.Collections.IEnumerator it = new System.Collections.Hashtable(threadsAndFields).GetEnumerator();
while (it.MoveNext())
{
System.Collections.DictionaryEntry entry = (System.Collections.DictionaryEntry)it.Current;
System.Collections.ICollection fields = (System.Collections.ICollection)entry.Value;
System.Collections.IEnumerator fieldsIt = fields.GetEnumerator();
System.Collections.ArrayList fieldsToRemove = new System.Collections.ArrayList();
while (fieldsIt.MoveNext())
{
NormsWriterPerField perField = (NormsWriterPerField)((System.Collections.DictionaryEntry)fieldsIt.Current).Key;
if (perField.upto > 0)
{
// It has some norms
System.Collections.IList l = (System.Collections.IList)byField[perField.fieldInfo];
if (l == null)
{
l = new System.Collections.ArrayList();
byField[perField.fieldInfo] = l;
}
l.Add(perField);
}
// Remove this field since we haven't seen it
// since the previous flush
else
{
fieldsToRemove.Add(perField);
}
}
System.Collections.Hashtable fieldsHT = (System.Collections.Hashtable)fields;
for (int i = 0; i < fieldsToRemove.Count; i++)
{
fieldsHT.Remove(fieldsToRemove[i]);
}
}
System.String normsFileName = state.segmentName + "." + IndexFileNames.NORMS_EXTENSION;
state.flushedFiles[normsFileName] = normsFileName;
IndexOutput normsOut = state.directory.CreateOutput(normsFileName);
try
{
normsOut.WriteBytes(SegmentMerger.NORMS_HEADER, 0, SegmentMerger.NORMS_HEADER.Length);
int numField = fieldInfos.Size();
int normCount = 0;
for (int fieldNumber = 0; fieldNumber < numField; fieldNumber++)
{
FieldInfo fieldInfo = fieldInfos.FieldInfo(fieldNumber);
System.Collections.IList toMerge = (System.Collections.IList)byField[fieldInfo];
int upto = 0;
if (toMerge != null)
{
int numFields = toMerge.Count;
normCount++;
NormsWriterPerField[] fields = new NormsWriterPerField[numFields];
int[] uptos = new int[numFields];
for (int j = 0; j < numFields; j++)
{
fields[j] = (NormsWriterPerField)toMerge[j];
}
int numLeft = numFields;
while (numLeft > 0)
{
System.Diagnostics.Debug.Assert(uptos [0] < fields [0].docIDs.Length, " uptos[0]=" + uptos [0] + " len=" + (fields [0].docIDs.Length));
int minLoc = 0;
int minDocID = fields[0].docIDs[uptos[0]];
for (int j = 1; j < numLeft; j++)
{
int docID = fields[j].docIDs[uptos[j]];
if (docID < minDocID)
{
minDocID = docID;
minLoc = j;
}
}
System.Diagnostics.Debug.Assert(minDocID < state.numDocs);
// Fill hole
for (; upto < minDocID; upto++)
{
normsOut.WriteByte(defaultNorm);
}
normsOut.WriteByte(fields[minLoc].norms[uptos[minLoc]]);
(uptos[minLoc])++;
upto++;
if (uptos[minLoc] == fields[minLoc].upto)
{
fields[minLoc].Reset();
if (minLoc != numLeft - 1)
{
fields[minLoc] = fields[numLeft - 1];
uptos[minLoc] = uptos[numLeft - 1];
}
numLeft--;
}
}
// Fill final hole with defaultNorm
for (; upto < state.numDocs; upto++)
{
normsOut.WriteByte(defaultNorm);
}
}
else if (fieldInfo.isIndexed && !fieldInfo.omitNorms)
{
normCount++;
// Fill entire field with default norm:
for (; upto < state.numDocs; upto++)
{
normsOut.WriteByte(defaultNorm);
}
}
System.Diagnostics.Debug.Assert(4 + normCount * state.numDocs == normsOut.GetFilePointer(), ".nrm file size mismatch: expected=" + (4 + normCount * state.numDocs) + " actual=" + normsOut.GetFilePointer());
}
}
finally
{
normsOut.Close();
}
}
internal void WriteField(FieldInfo fi, Fieldable field)
{
// if the field as an instanceof FieldsReader.FieldForMerge, we're in merge mode
// and field.binaryValue() already returns the compressed value for a field
// with isCompressed()==true, so we disable compression in that case
bool disableCompression = (field is FieldsReader.FieldForMerge);
fieldsStream.WriteVInt(fi.number);
byte bits = 0;
if (field.IsTokenized())
{
bits |= FieldsWriter.FIELD_IS_TOKENIZED;
}
if (field.IsBinary())
{
bits |= FieldsWriter.FIELD_IS_BINARY;
}
if (field.IsCompressed())
{
bits |= FieldsWriter.FIELD_IS_COMPRESSED;
}
fieldsStream.WriteByte(bits);
if (field.IsCompressed())
{
// compression is enabled for the current field
byte[] data;
int len;
int offset;
if (disableCompression)
{
// optimized case for merging, the data
// is already compressed
data = field.GetBinaryValue();
System.Diagnostics.Debug.Assert(data != null);
len = field.GetBinaryLength();
offset = field.GetBinaryOffset();
}
else
{
// check if it is a binary field
if (field.IsBinary())
{
data = CompressionTools.Compress(field.GetBinaryValue(), field.GetBinaryOffset(), field.GetBinaryLength());
}
else
{
byte[] x = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(field.StringValue());
data = CompressionTools.Compress(x, 0, x.Length);
}
len = data.Length;
offset = 0;
}
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, offset, len);
}
else
{
// compression is disabled for the current field
if (field.IsBinary())
{
byte[] data;
int len;
int offset;
data = field.GetBinaryValue();
len = field.GetBinaryLength();
offset = field.GetBinaryOffset();
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, offset, len);
}
else
{
fieldsStream.WriteString(field.StringValue());
}
}
}
/// <summary> Save this segment's info.</summary>
internal void Write(IndexOutput output)
{
output.WriteString(name);
output.WriteInt(docCount);
output.WriteLong(delGen);
output.WriteInt(docStoreOffset);
if (docStoreOffset != - 1)
{
output.WriteString(docStoreSegment);
output.WriteByte((byte) (docStoreIsCompoundFile?1:0));
}
output.WriteByte((byte) (hasSingleNormFile?1:0));
if (normGen == null)
{
output.WriteInt(NO);
}
else
{
output.WriteInt(normGen.Length);
for (int j = 0; j < normGen.Length; j++)
{
output.WriteLong(normGen[j]);
}
}
output.WriteByte((byte) isCompoundFile);
output.WriteInt(delCount);
output.WriteByte((byte) (hasProx?1:0));
output.WriteStringStringMap(diagnostics);
}
/// <summary>Called once per field per document if term vectors
/// are enabled, to write the vectors to
/// RAMOutputStream, which is then quickly flushed to
/// the real term vectors files in the Directory.
/// </summary>
internal override void Finish()
{
System.Diagnostics.Debug.Assert(docState.TestPoint("TermVectorsTermsWriterPerField.finish start"));
int numPostings = termsHashPerField.numPostings;
System.Diagnostics.Debug.Assert(numPostings >= 0);
if (!doVectors || numPostings == 0)
{
return;
}
if (numPostings > maxNumPostings)
{
maxNumPostings = numPostings;
}
IndexOutput tvf = perThread.doc.perDocTvf;
// This is called once, after inverting all occurences
// of a given field in the doc. At this point we flush
// our hash into the DocWriter.
System.Diagnostics.Debug.Assert(fieldInfo.storeTermVector);
System.Diagnostics.Debug.Assert(perThread.VectorFieldsInOrder(fieldInfo));
perThread.doc.AddField(termsHashPerField.fieldInfo.number);
RawPostingList[] postings = termsHashPerField.SortPostings();
tvf.WriteVInt(numPostings);
byte bits = (byte)(0x0);
if (doVectorPositions)
{
bits |= TermVectorsReader.STORE_POSITIONS_WITH_TERMVECTOR;
}
if (doVectorOffsets)
{
bits |= TermVectorsReader.STORE_OFFSET_WITH_TERMVECTOR;
}
tvf.WriteByte(bits);
int encoderUpto = 0;
int lastTermBytesCount = 0;
ByteSliceReader reader = perThread.vectorSliceReader;
char[][] charBuffers = perThread.termsHashPerThread.charPool.buffers;
for (int j = 0; j < numPostings; j++)
{
TermVectorsTermsWriter.PostingList posting = (TermVectorsTermsWriter.PostingList)postings[j];
int freq = posting.freq;
char[] text2 = charBuffers[posting.textStart >> DocumentsWriter.CHAR_BLOCK_SHIFT];
int start2 = posting.textStart & DocumentsWriter.CHAR_BLOCK_MASK;
// We swap between two encoders to save copying
// last Term's byte array
UnicodeUtil.UTF8Result utf8Result = perThread.utf8Results[encoderUpto];
// TODO: we could do this incrementally
UnicodeUtil.UTF16toUTF8(text2, start2, utf8Result);
int termBytesCount = utf8Result.length;
// TODO: UTF16toUTF8 could tell us this prefix
// Compute common prefix between last term and
// this term
int prefix = 0;
if (j > 0)
{
byte[] lastTermBytes = perThread.utf8Results[1 - encoderUpto].result;
byte[] termBytes = perThread.utf8Results[encoderUpto].result;
while (prefix < lastTermBytesCount && prefix < termBytesCount)
{
if (lastTermBytes[prefix] != termBytes[prefix])
{
break;
}
prefix++;
}
}
encoderUpto = 1 - encoderUpto;
lastTermBytesCount = termBytesCount;
int suffix = termBytesCount - prefix;
tvf.WriteVInt(prefix);
tvf.WriteVInt(suffix);
tvf.WriteBytes(utf8Result.result, prefix, suffix);
tvf.WriteVInt(freq);
if (doVectorPositions)
{
termsHashPerField.InitReader(reader, posting, 0);
reader.WriteTo(tvf);
}
if (doVectorOffsets)
{
termsHashPerField.InitReader(reader, posting, 1);
reader.WriteTo(tvf);
}
}
termsHashPerField.Reset();
// NOTE: we clear, per-field, at the thread level,
// because term vectors fully write themselves on each
// field; this saves RAM (eg if large doc has two large
// fields w/ term vectors on) because we recycle/reuse
// all RAM after each field:
perThread.termsHashPerThread.Reset(false);
}
/// <summary>Write as a d-gaps list </summary>
private void WriteDgaps(IndexOutput output)
{
output.WriteInt(- 1); // mark using d-gaps
output.WriteInt(Size()); // write size
output.WriteInt(Count()); // write count
int last = 0;
int n = Count();
int m = bits.Length;
for (int i = 0; i < m && n > 0; i++)
{
if (bits[i] != 0)
{
output.WriteVInt(i - last);
output.WriteByte(bits[i]);
last = i;
n -= BYTE_COUNTS[bits[i] & 0xFF];
}
}
}
