public FSTTermsReader(SegmentReadState state, PostingsReaderBase postingsReader)
{
string termsFileName = IndexFileNames.SegmentFileName(state.SegmentInfo.Name, state.SegmentSuffix, FSTTermsWriter.TERMS_EXTENSION);
this.postingsReader = postingsReader;
IndexInput @in = state.Directory.OpenInput(termsFileName, state.Context);
bool success = false;
try
{
version = ReadHeader(@in);
if (version >= FSTTermsWriter.TERMS_VERSION_CHECKSUM)
{
CodecUtil.ChecksumEntireFile(@in);
}
this.postingsReader.Init(@in);
SeekDir(@in);
FieldInfos fieldInfos = state.FieldInfos;
int numFields = @in.ReadVInt();
for (int i = 0; i < numFields; i++)
{
int fieldNumber = @in.ReadVInt();
FieldInfo fieldInfo = fieldInfos.FieldInfo(fieldNumber);
long numTerms = @in.ReadVLong();
long sumTotalTermFreq = fieldInfo.FieldIndexOptions == IndexOptions.DOCS_ONLY ? -1 : @in.ReadVLong();
long sumDocFreq = @in.ReadVLong();
int docCount = @in.ReadVInt();
int longsSize = @in.ReadVInt();
TermsReader current = new TermsReader(this, fieldInfo, @in, numTerms, sumTotalTermFreq, sumDocFreq, docCount, longsSize);
TermsReader previous = fields[fieldInfo.Name] = current;
CheckFieldSummary(state.SegmentInfo, @in, current, previous);
}
success = true;
}
finally
{
if (success)
{
IOUtils.Close(@in);
}
else
{
IOUtils.CloseWhileHandlingException(@in);
}
}
}
public override void VisitDocument(int n, StoredFieldVisitor visitor)
{
_input.Seek(_offsets[n]);
ReadLine();
Debug.Assert(StringHelper.StartsWith(_scratch, SimpleTextStoredFieldsWriter.NUM));
var numFields = ParseIntAt(SimpleTextStoredFieldsWriter.NUM.Length);
for (var i = 0; i < numFields; i++)
{
ReadLine();
Debug.Assert(StringHelper.StartsWith(_scratch, SimpleTextStoredFieldsWriter.FIELD));
int fieldNumber = ParseIntAt(SimpleTextStoredFieldsWriter.FIELD.Length);
FieldInfo fieldInfo = _fieldInfos.FieldInfo(fieldNumber);
ReadLine();
Debug.Assert(StringHelper.StartsWith(_scratch, SimpleTextStoredFieldsWriter.NAME));
ReadLine();
Debug.Assert(StringHelper.StartsWith(_scratch, SimpleTextStoredFieldsWriter.TYPE));
BytesRef type;
if (EqualsAt(SimpleTextStoredFieldsWriter.TYPE_STRING, _scratch, SimpleTextStoredFieldsWriter.TYPE.Length))
{
type = SimpleTextStoredFieldsWriter.TYPE_STRING;
}
else if (EqualsAt(SimpleTextStoredFieldsWriter.TYPE_BINARY, _scratch, SimpleTextStoredFieldsWriter.TYPE.Length))
{
type = SimpleTextStoredFieldsWriter.TYPE_BINARY;
}
else if (EqualsAt(SimpleTextStoredFieldsWriter.TYPE_INT, _scratch, SimpleTextStoredFieldsWriter.TYPE.Length))
{
type = SimpleTextStoredFieldsWriter.TYPE_INT;
}
else if (EqualsAt(SimpleTextStoredFieldsWriter.TYPE_LONG, _scratch, SimpleTextStoredFieldsWriter.TYPE.Length))
{
type = SimpleTextStoredFieldsWriter.TYPE_LONG;
}
else if (EqualsAt(SimpleTextStoredFieldsWriter.TYPE_FLOAT, _scratch, SimpleTextStoredFieldsWriter.TYPE.Length))
{
type = SimpleTextStoredFieldsWriter.TYPE_FLOAT;
}
else if (EqualsAt(SimpleTextStoredFieldsWriter.TYPE_DOUBLE, _scratch, SimpleTextStoredFieldsWriter.TYPE.Length))
{
type = SimpleTextStoredFieldsWriter.TYPE_DOUBLE;
}
else
{
throw new Exception("unknown field type");
}
switch (visitor.NeedsField(fieldInfo))
{
case StoredFieldVisitor.Status.YES:
ReadField(type, fieldInfo, visitor);
break;
case StoredFieldVisitor.Status.NO:
ReadLine();
Debug.Assert(StringHelper.StartsWith(_scratch, SimpleTextStoredFieldsWriter.VALUE));
break;
case StoredFieldVisitor.Status.STOP:
return;
}
}
}
