public override FieldsProducer FieldsProducer(SegmentReadState state)
{
string fileName = IndexFileNames.SegmentFileName(state.SegmentInfo.Name, state.SegmentSuffix, EXTENSION);
ChecksumIndexInput @in = state.Directory.OpenChecksumInput(fileName, IOContext.READ_ONCE);
// LUCENENET specific: Use StringComparer.Ordinal to get the same ordering as Java
var fields = new JCG.SortedDictionary <string, TermsReader>(StringComparer.Ordinal);
try
{
CodecUtil.CheckHeader(@in, CODEC_NAME, VERSION_START, VERSION_CURRENT);
while (true)
{
int termCount = @in.ReadVInt32();
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(fields));
}
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.ReadVInt32(); //read in the size
FieldInfo[] infos = new FieldInfo[size];
for (int i = 0; i < size; i++)
{
string name = input.ReadString();
int fieldNumber = input.ReadVInt32();
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;
IndexOptions indexOptions;
if (!isIndexed)
{
indexOptions = IndexOptions.NONE;
}
else if ((bits & Lucene46FieldInfosFormat.OMIT_TERM_FREQ_AND_POSITIONS) != 0)
{
indexOptions = IndexOptions.DOCS_ONLY;
}
else if ((bits & Lucene46FieldInfosFormat.OMIT_POSITIONS) != 0)
{
indexOptions = IndexOptions.DOCS_AND_FREQS;
}
else if ((bits & Lucene46FieldInfosFormat.STORE_OFFSETS_IN_POSTINGS) != 0)
{
indexOptions = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
}
else
{
indexOptions = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
}
// DV Types are packed in one byte
byte val = input.ReadByte();
DocValuesType docValuesType = GetDocValuesType(input, (byte)(val & 0x0F));
DocValuesType normsType = GetDocValuesType(input, (byte)((val.TripleShift(4)) & 0x0F));
long dvGen = input.ReadInt64();
IDictionary <string, string> attributes = input.ReadStringStringMap();
infos[i] = new FieldInfo(name, isIndexed, fieldNumber, storeTermVector, omitNorms, storePayloads, indexOptions, docValuesType, normsType, attributes.AsReadOnly());
infos[i].DocValuesGen = dvGen;
}
if (codecVersion >= Lucene46FieldInfosFormat.FORMAT_CHECKSUM)
{
CodecUtil.CheckFooter(input);
}
else
{
#pragma warning disable 612, 618
CodecUtil.CheckEOF(input);
#pragma warning restore 612, 618
}
FieldInfos fieldInfos = new FieldInfos(infos);
success = true;
return(fieldInfos);
}
finally
{
if (success)
{
input.Dispose();
}
else
{
IOUtils.DisposeWhileHandlingException(input);
}
}
}
/// <summary>
/// Go to the chunk containing the provided <paramref name="doc"/> ID.
/// </summary>
internal void Next(int doc)
{
if (Debugging.AssertsEnabled)
{
Debugging.Assert(doc >= this.docBase + this.chunkDocs, "{0} {1} {2}", doc, this.docBase, this.chunkDocs);
}
fieldsStream.Seek(outerInstance.indexReader.GetStartPointer(doc));
int docBase = fieldsStream.ReadVInt32();
int chunkDocs = fieldsStream.ReadVInt32();
if (docBase < this.docBase + this.chunkDocs || docBase + chunkDocs > outerInstance.numDocs)
{
throw new CorruptIndexException($"Corrupted: current docBase={this.docBase}, current numDocs={this.chunkDocs}, new docBase={docBase}, new numDocs={chunkDocs} (resource={fieldsStream})");
}
this.docBase = docBase;
this.chunkDocs = chunkDocs;
if (chunkDocs > numStoredFields.Length)
{
int newLength = ArrayUtil.Oversize(chunkDocs, 4);
numStoredFields = new int[newLength];
lengths = new int[newLength];
}
if (chunkDocs == 1)
{
numStoredFields[0] = fieldsStream.ReadVInt32();
lengths[0] = fieldsStream.ReadVInt32();
}
else
{
int bitsPerStoredFields = fieldsStream.ReadVInt32();
if (bitsPerStoredFields == 0)
{
Arrays.Fill(numStoredFields, 0, chunkDocs, fieldsStream.ReadVInt32());
}
else if (bitsPerStoredFields > 31)
{
throw new CorruptIndexException("bitsPerStoredFields=" + bitsPerStoredFields + " (resource=" + fieldsStream + ")");
}
else
{
PackedInt32s.IReaderIterator it = PackedInt32s.GetReaderIteratorNoHeader(fieldsStream, PackedInt32s.Format.PACKED, outerInstance.packedIntsVersion, chunkDocs, bitsPerStoredFields, 1);
for (int i = 0; i < chunkDocs; ++i)
{
numStoredFields[i] = (int)it.Next();
}
}
int bitsPerLength = fieldsStream.ReadVInt32();
if (bitsPerLength == 0)
{
Arrays.Fill(lengths, 0, chunkDocs, fieldsStream.ReadVInt32());
}
else if (bitsPerLength > 31)
{
throw new CorruptIndexException($"bitsPerLength={bitsPerLength}");
}
else
{
PackedInt32s.IReaderIterator it = PackedInt32s.GetReaderIteratorNoHeader(fieldsStream, PackedInt32s.Format.PACKED, outerInstance.packedIntsVersion, chunkDocs, bitsPerLength, 1);
for (int i = 0; i < chunkDocs; ++i)
{
lengths[i] = (int)it.Next();
}
}
}
}
