Пример #1
0
        public override FieldsProducer FieldsProducer(SegmentReadState state)
        {
            string             fileName = IndexFileNames.SegmentFileName(state.SegmentInfo.Name, state.SegmentSuffix, EXTENSION);
            ChecksumIndexInput @in      = state.Directory.OpenChecksumInput(fileName, IOContext.READONCE);
            var fields = new SortedDictionary <string, TermsReader>();

            try
            {
                CodecUtil.CheckHeader(@in, CODEC_NAME, VERSION_START, VERSION_CURRENT);
                while (true)
                {
                    int termCount = @in.ReadVInt();
                    if (termCount == 0)
                    {
                        break;
                    }

                    TermsReader termsReader = new TermsReader(state.FieldInfos, @in, termCount);
                    // System.out.println("load field=" + termsReader.field.name);
                    fields.Add(termsReader.field.Name, termsReader);
                }
                CodecUtil.CheckFooter(@in);
            }
            finally
            {
                @in.Dispose();
            }

            return(new FieldsProducerAnonymousInnerClassHelper(this, fields));
        }
Пример #2
0
        public override FieldInfos Read(Directory directory, string segmentName, string segmentSuffix, IOContext context)
        {
            string             fileName = IndexFileNames.SegmentFileName(segmentName, segmentSuffix, Lucene46FieldInfosFormat.EXTENSION);
            ChecksumIndexInput input    = directory.OpenChecksumInput(fileName, context);

            bool success = false;

            try
            {
                int codecVersion = CodecUtil.CheckHeader(input, Lucene46FieldInfosFormat.CODEC_NAME, Lucene46FieldInfosFormat.FORMAT_START, Lucene46FieldInfosFormat.FORMAT_CURRENT);

                int         size  = input.ReadVInt(); //read in the size
                FieldInfo[] infos = new FieldInfo[size];

                for (int i = 0; i < size; i++)
                {
                    string name            = input.ReadString();
                    int    fieldNumber     = input.ReadVInt();
                    byte   bits            = input.ReadByte();
                    bool   isIndexed       = (bits & Lucene46FieldInfosFormat.IS_INDEXED) != 0;
                    bool   storeTermVector = (bits & Lucene46FieldInfosFormat.STORE_TERMVECTOR) != 0;
                    bool   omitNorms       = (bits & Lucene46FieldInfosFormat.OMIT_NORMS) != 0;
                    bool   storePayloads   = (bits & Lucene46FieldInfosFormat.STORE_PAYLOADS) != 0;
                    FieldInfo.IndexOptions indexOptions;
                    if (!isIndexed)
                    {
                        indexOptions = default(FieldInfo.IndexOptions);
                    }
                    else if ((bits & Lucene46FieldInfosFormat.OMIT_TERM_FREQ_AND_POSITIONS) != 0)
                    {
                        indexOptions = FieldInfo.IndexOptions.DOCS_ONLY;
                    }
                    else if ((bits & Lucene46FieldInfosFormat.OMIT_POSITIONS) != 0)
                    {
                        indexOptions = FieldInfo.IndexOptions.DOCS_AND_FREQS;
                    }
                    else if ((bits & Lucene46FieldInfosFormat.STORE_OFFSETS_IN_POSTINGS) != 0)
                    {
                        indexOptions = FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
                    }
                    else
                    {
                        indexOptions = FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
                    }

                    // DV Types are packed in one byte
                    byte val = input.ReadByte();
                    FieldInfo.DocValuesType_e?docValuesType = GetDocValuesType(input, (sbyte)(val & 0x0F));
                    FieldInfo.DocValuesType_e?normsType     = GetDocValuesType(input, (sbyte)(((int)((uint)val >> 4)) & 0x0F));
                    long dvGen = input.ReadLong();
                    IDictionary <string, string> attributes = input.ReadStringStringMap();
                    infos[i] = new FieldInfo(name, isIndexed, fieldNumber, storeTermVector, omitNorms, storePayloads, indexOptions, docValuesType, normsType, CollectionsHelper.UnmodifiableMap(attributes));
                    infos[i].DocValuesGen = dvGen;
                }

                if (codecVersion >= Lucene46FieldInfosFormat.FORMAT_CHECKSUM)
                {
                    CodecUtil.CheckFooter(input);
                }
                else
                {
                    CodecUtil.CheckEOF(input);
                }
                FieldInfos fieldInfos = new FieldInfos(infos);
                success = true;
                return(fieldInfos);
            }
            finally
            {
                if (success)
                {
                    input.Dispose();
                }
                else
                {
                    IOUtils.CloseWhileHandlingException(input);
                }
            }
        }
            /// <summary>
            /// Go to the chunk containing the provided doc ID.
            /// </summary>
            internal void Next(int doc)
            {
                Debug.Assert(doc >= DocBase + ChunkDocs, doc + " " + DocBase + " " + ChunkDocs);
                FieldsStream.Seek(OuterInstance.IndexReader.GetStartPointer(doc));

                int docBase   = FieldsStream.ReadVInt();
                int chunkDocs = FieldsStream.ReadVInt();

                if (docBase < this.DocBase + this.ChunkDocs || docBase + chunkDocs > OuterInstance.NumDocs)
                {
                    throw new CorruptIndexException("Corrupted: current docBase=" + this.DocBase + ", current numDocs=" + this.ChunkDocs + ", new docBase=" + docBase + ", new numDocs=" + chunkDocs + " (resource=" + FieldsStream + ")");
                }
                this.DocBase   = docBase;
                this.ChunkDocs = chunkDocs;

                if (chunkDocs > NumStoredFields.Length)
                {
                    int newLength = ArrayUtil.Oversize(chunkDocs, 4);
                    NumStoredFields = new int[newLength];
                    Lengths         = new int[newLength];
                }

                if (chunkDocs == 1)
                {
                    NumStoredFields[0] = FieldsStream.ReadVInt();
                    Lengths[0]         = FieldsStream.ReadVInt();
                }
                else
                {
                    int bitsPerStoredFields = FieldsStream.ReadVInt();
                    if (bitsPerStoredFields == 0)
                    {
                        CollectionsHelper.Fill(NumStoredFields, 0, chunkDocs, FieldsStream.ReadVInt());
                    }
                    else if (bitsPerStoredFields > 31)
                    {
                        throw new CorruptIndexException("bitsPerStoredFields=" + bitsPerStoredFields + " (resource=" + FieldsStream + ")");
                    }
                    else
                    {
                        PackedInts.ReaderIterator it = PackedInts.GetReaderIteratorNoHeader(FieldsStream, PackedInts.Format.PACKED, OuterInstance.PackedIntsVersion, chunkDocs, bitsPerStoredFields, 1);
                        for (int i = 0; i < chunkDocs; ++i)
                        {
                            NumStoredFields[i] = (int)it.Next();
                        }
                    }

                    int bitsPerLength = FieldsStream.ReadVInt();
                    if (bitsPerLength == 0)
                    {
                        CollectionsHelper.Fill(Lengths, 0, chunkDocs, FieldsStream.ReadVInt());
                    }
                    else if (bitsPerLength > 31)
                    {
                        throw new CorruptIndexException("bitsPerLength=" + bitsPerLength);
                    }
                    else
                    {
                        PackedInts.ReaderIterator it = PackedInts.GetReaderIteratorNoHeader(FieldsStream, PackedInts.Format.PACKED, OuterInstance.PackedIntsVersion, chunkDocs, bitsPerLength, 1);
                        for (int i = 0; i < chunkDocs; ++i)
                        {
                            Lengths[i] = (int)it.Next();
                        }
                    }
                }
            }