/// <summary>
/// Constructs a bit vector from the file <paramref name="name"/> in Directory
/// <paramref name="d"/>, as written by the <see cref="Write(Directory, string, IOContext)"/> method.
/// </summary>
public BitVector(Directory d, string name, IOContext context)
{
ChecksumIndexInput input = d.OpenChecksumInput(name, context);
try
{
int firstInt = input.ReadInt32();
if (firstInt == -2)
{
// New format, with full header & version:
version = CodecUtil.CheckHeader(input, CODEC, VERSION_START, VERSION_CURRENT);
size = input.ReadInt32();
}
else
{
version = VERSION_PRE;
size = firstInt;
}
if (size == -1)
{
if (version >= VERSION_DGAPS_CLEARED)
{
ReadClearedDgaps(input);
}
else
{
ReadSetDgaps(input);
}
}
else
{
ReadBits(input);
}
if (version < VERSION_DGAPS_CLEARED)
{
InvertAll();
}
if (version >= VERSION_CHECKSUM)
{
CodecUtil.CheckFooter(input);
}
else
{
#pragma warning disable 612, 618
CodecUtil.CheckEOF(input);
#pragma warning restore 612, 618
}
if (Debugging.AssertsEnabled)
{
Debugging.Assert(VerifyCount());
}
}
finally
{
input.Dispose();
}
}
public BloomFilteredFieldsProducer(BloomFilteringPostingsFormat outerInstance, SegmentReadState state)
{
this.outerInstance = outerInstance;
var bloomFileName = IndexFileNames.SegmentFileName(
state.SegmentInfo.Name, state.SegmentSuffix, BLOOM_EXTENSION);
ChecksumIndexInput bloomIn = null;
var success = false;
try
{
bloomIn = state.Directory.OpenChecksumInput(bloomFileName, state.Context);
var version = CodecUtil.CheckHeader(bloomIn, /*BLOOM_CODEC_NAME*/ outerInstance.Name, VERSION_START, VERSION_CURRENT);
// Load the hash function used in the BloomFilter
// hashFunction = HashFunction.forName(bloomIn.readString());
// Load the delegate postings format
var delegatePostingsFormat = ForName(bloomIn.ReadString());
_delegateFieldsProducer = delegatePostingsFormat
.FieldsProducer(state);
var numBlooms = bloomIn.ReadInt32();
for (var i = 0; i < numBlooms; i++)
{
var fieldNum = bloomIn.ReadInt32();
var bloom = FuzzySet.Deserialize(bloomIn);
var fieldInfo = state.FieldInfos.FieldInfo(fieldNum);
_bloomsByFieldName.Add(fieldInfo.Name, bloom);
}
if (version >= VERSION_CHECKSUM)
{
CodecUtil.CheckFooter(bloomIn);
}
else
{
#pragma warning disable 612, 618
CodecUtil.CheckEOF(bloomIn);
#pragma warning restore 612, 618
}
IOUtils.Dispose(bloomIn);
success = true;
}
finally
{
if (!success)
{
IOUtils.DisposeWhileHandlingException(bloomIn, _delegateFieldsProducer);
}
}
}
public override SegmentInfo Read(Directory dir, string segment, IOContext context)
{
string fileName = IndexFileNames.SegmentFileName(segment, "", Lucene46SegmentInfoFormat.SI_EXTENSION);
ChecksumIndexInput input = dir.OpenChecksumInput(fileName, context);
bool success = false;
try
{
int codecVersion = CodecUtil.CheckHeader(input, Lucene46SegmentInfoFormat.CODEC_NAME, Lucene46SegmentInfoFormat.VERSION_START, Lucene46SegmentInfoFormat.VERSION_CURRENT);
string version = input.ReadString();
int docCount = input.ReadInt32();
if (docCount < 0)
{
throw new CorruptIndexException("invalid docCount: " + docCount + " (resource=" + input + ")");
}
bool isCompoundFile = input.ReadByte() == SegmentInfo.YES;
IDictionary <string, string> diagnostics = input.ReadStringStringMap();
ISet <string> files = input.ReadStringSet();
if (codecVersion >= Lucene46SegmentInfoFormat.VERSION_CHECKSUM)
{
CodecUtil.CheckFooter(input);
}
else
{
#pragma warning disable 612, 618
CodecUtil.CheckEOF(input);
#pragma warning restore 612, 618
}
SegmentInfo si = new SegmentInfo(dir, version, segment, docCount, isCompoundFile, null, diagnostics);
si.SetFiles(files);
success = true;
return(si);
}
finally
{
if (!success)
{
IOUtils.DisposeWhileHandlingException(input);
}
else
{
input.Dispose();
}
}
}