/// <summary> /// Sole constructor. </summary> public CompressingTermVectorsReader(Directory d, SegmentInfo si, string segmentSuffix, FieldInfos fn, IOContext context, string formatName, CompressionMode compressionMode) { this.compressionMode = compressionMode; string segment = si.Name; bool success = false; fieldInfos = fn; numDocs = si.DocCount; ChecksumIndexInput indexStream = null; try { // Load the index into memory string indexStreamFN = IndexFileNames.SegmentFileName(segment, segmentSuffix, CompressingTermVectorsWriter.VECTORS_INDEX_EXTENSION); indexStream = d.OpenChecksumInput(indexStreamFN, context); string codecNameIdx = formatName + CompressingTermVectorsWriter.CODEC_SFX_IDX; version = CodecUtil.CheckHeader(indexStream, codecNameIdx, CompressingTermVectorsWriter.VERSION_START, CompressingTermVectorsWriter.VERSION_CURRENT); Debug.Assert(CodecUtil.HeaderLength(codecNameIdx) == indexStream.FilePointer); indexReader = new CompressingStoredFieldsIndexReader(indexStream, si); if (version >= CompressingTermVectorsWriter.VERSION_CHECKSUM) { indexStream.ReadVLong(); // the end of the data file CodecUtil.CheckFooter(indexStream); } else { CodecUtil.CheckEOF(indexStream); } indexStream.Dispose(); indexStream = null; // Open the data file and read metadata string vectorsStreamFN = IndexFileNames.SegmentFileName(segment, segmentSuffix, CompressingTermVectorsWriter.VECTORS_EXTENSION); vectorsStream = d.OpenInput(vectorsStreamFN, context); string codecNameDat = formatName + CompressingTermVectorsWriter.CODEC_SFX_DAT; int version2 = CodecUtil.CheckHeader(vectorsStream, codecNameDat, CompressingTermVectorsWriter.VERSION_START, CompressingTermVectorsWriter.VERSION_CURRENT); if (version != version2) { throw new Exception("Version mismatch between stored fields index and data: " + version + " != " + version2); } Debug.Assert(CodecUtil.HeaderLength(codecNameDat) == vectorsStream.FilePointer); packedIntsVersion = vectorsStream.ReadVInt(); chunkSize = vectorsStream.ReadVInt(); decompressor = compressionMode.NewDecompressor(); this.reader = new BlockPackedReaderIterator(vectorsStream, packedIntsVersion, CompressingTermVectorsWriter.BLOCK_SIZE, 0); success = true; } finally { if (!success) { IOUtils.CloseWhileHandlingException(this, indexStream); } } }
/// <summary> /// Sole constructor. </summary> public CompressingStoredFieldsReader(Directory d, SegmentInfo si, string segmentSuffix, FieldInfos fn, IOContext context, string formatName, CompressionMode compressionMode) { this.CompressionMode_Renamed = compressionMode; string segment = si.Name; bool success = false; FieldInfos = fn; NumDocs = si.DocCount; ChecksumIndexInput indexStream = null; try { string indexStreamFN = IndexFileNames.SegmentFileName(segment, segmentSuffix, Lucene40StoredFieldsWriter.FIELDS_INDEX_EXTENSION); string fieldsStreamFN = IndexFileNames.SegmentFileName(segment, segmentSuffix, Lucene40StoredFieldsWriter.FIELDS_EXTENSION); // Load the index into memory indexStream = d.OpenChecksumInput(indexStreamFN, context); string codecNameIdx = formatName + CompressingStoredFieldsWriter.CODEC_SFX_IDX; Version_Renamed = CodecUtil.CheckHeader(indexStream, codecNameIdx, CompressingStoredFieldsWriter.VERSION_START, CompressingStoredFieldsWriter.VERSION_CURRENT); Debug.Assert(CodecUtil.HeaderLength(codecNameIdx) == indexStream.FilePointer); IndexReader = new CompressingStoredFieldsIndexReader(indexStream, si); long maxPointer = -1; if (Version_Renamed >= CompressingStoredFieldsWriter.VERSION_CHECKSUM) { maxPointer = indexStream.ReadVLong(); CodecUtil.CheckFooter(indexStream); } else { CodecUtil.CheckEOF(indexStream); } indexStream.Dispose(); indexStream = null; // Open the data file and read metadata FieldsStream = d.OpenInput(fieldsStreamFN, context); if (Version_Renamed >= CompressingStoredFieldsWriter.VERSION_CHECKSUM) { if (maxPointer + CodecUtil.FooterLength() != FieldsStream.Length()) { throw new CorruptIndexException("Invalid fieldsStream maxPointer (file truncated?): maxPointer=" + maxPointer + ", length=" + FieldsStream.Length()); } } else { maxPointer = FieldsStream.Length(); } this.MaxPointer = maxPointer; string codecNameDat = formatName + CompressingStoredFieldsWriter.CODEC_SFX_DAT; int fieldsVersion = CodecUtil.CheckHeader(FieldsStream, codecNameDat, CompressingStoredFieldsWriter.VERSION_START, CompressingStoredFieldsWriter.VERSION_CURRENT); if (Version_Renamed != fieldsVersion) { throw new CorruptIndexException("Version mismatch between stored fields index and data: " + Version_Renamed + " != " + fieldsVersion); } Debug.Assert(CodecUtil.HeaderLength(codecNameDat) == FieldsStream.FilePointer); if (Version_Renamed >= CompressingStoredFieldsWriter.VERSION_BIG_CHUNKS) { ChunkSize_Renamed = FieldsStream.ReadVInt(); } else { ChunkSize_Renamed = -1; } PackedIntsVersion = FieldsStream.ReadVInt(); Decompressor = compressionMode.NewDecompressor(); this.Bytes = new BytesRef(); success = true; } finally { if (!success) { IOUtils.CloseWhileHandlingException(this, indexStream); } } }