private void Read(IndexInput input, String fileName) { int firstInt = input.ReadVInt(); if (firstInt < 0) { // This is a real format format = firstInt; } else { format = FORMAT_PRE; } if (format != FORMAT_PRE & format != FORMAT_START) { throw new CorruptIndexException("unrecognized format " + format + " in file \"" + fileName + "\""); } int size; if (format == FORMAT_PRE) { size = firstInt; } else { size = input.ReadVInt(); //read in the size } for (int i = 0; i < size; i++) { String name = StringHelper.Intern(input.ReadString()); byte bits = input.ReadByte(); bool isIndexed = (bits & IS_INDEXED) != 0; bool storeTermVector = (bits & STORE_TERMVECTOR) != 0; bool storePositionsWithTermVector = (bits & STORE_POSITIONS_WITH_TERMVECTOR) != 0; bool storeOffsetWithTermVector = (bits & STORE_OFFSET_WITH_TERMVECTOR) != 0; bool omitNorms = (bits & OMIT_NORMS) != 0; bool storePayloads = (bits & STORE_PAYLOADS) != 0; bool omitTermFreqAndPositions = (bits & OMIT_TERM_FREQ_AND_POSITIONS) != 0; AddInternal(name, isIndexed, storeTermVector, storePositionsWithTermVector, storeOffsetWithTermVector, omitNorms, storePayloads, omitTermFreqAndPositions); } if (input.FilePointer != input.Length()) { throw new CorruptIndexException("did not read all bytes from file \"" + fileName + "\": read " + input.FilePointer + " vs size " + input.Length()); } }
/// <summary> Construct a new SegmentInfo instance by reading a /// previously saved SegmentInfo from input. /// /// </summary> /// <param name="dir">directory to load from /// </param> /// <param name="format">format of the segments info file /// </param> /// <param name="input">input handle to read segment info from /// </param> internal SegmentInfo(Directory dir, int format, IndexInput input) { this.dir = dir; name = input.ReadString(); docCount = input.ReadInt(); if (format <= SegmentInfos.FORMAT_LOCKLESS) { delGen = input.ReadLong(); if (format <= SegmentInfos.FORMAT_SHARED_DOC_STORE) { docStoreOffset = input.ReadInt(); if (docStoreOffset != - 1) { docStoreSegment = input.ReadString(); docStoreIsCompoundFile = (1 == input.ReadByte()); } else { docStoreSegment = name; docStoreIsCompoundFile = false; } } else { docStoreOffset = - 1; docStoreSegment = name; docStoreIsCompoundFile = false; } if (format <= SegmentInfos.FORMAT_SINGLE_NORM_FILE) { hasSingleNormFile = (1 == input.ReadByte()); } else { hasSingleNormFile = false; } int numNormGen = input.ReadInt(); if (numNormGen == NO) { normGen = null; } else { normGen = new long[numNormGen]; for (int j = 0; j < numNormGen; j++) { normGen[j] = input.ReadLong(); } } isCompoundFile = (sbyte) input.ReadByte(); preLockless = (isCompoundFile == CHECK_DIR); if (format <= SegmentInfos.FORMAT_DEL_COUNT) { delCount = input.ReadInt(); System.Diagnostics.Debug.Assert(delCount <= docCount); } else delCount = - 1; if (format <= SegmentInfos.FORMAT_HAS_PROX) hasProx = input.ReadByte() == 1; else hasProx = true; if (format <= SegmentInfos.FORMAT_DIAGNOSTICS) { diagnostics = input.ReadStringStringMap(); } else { diagnostics = new Dictionary<string,string>(); } } else { delGen = CHECK_DIR; normGen = null; isCompoundFile = (sbyte) (CHECK_DIR); preLockless = true; hasSingleNormFile = false; docStoreOffset = - 1; docStoreIsCompoundFile = false; docStoreSegment = null; delCount = - 1; hasProx = true; diagnostics = new Dictionary<string,string>(); } }
/// <summary>read as a d-gaps list </summary> private void ReadDgaps(IndexInput input) { size = input.ReadInt(); // (re)read size count = input.ReadInt(); // read count bits = new byte[(size >> 3) + 1]; // allocate bits int last = 0; int n = Count(); while (n > 0) { last += input.ReadVInt(); bits[last] = input.ReadByte(); n -= BYTE_COUNTS[bits[last] & 0xFF]; } }