internal void WriteField(FieldInfo fi, Fieldable field)
{
// if the field as an instanceof FieldsReader.FieldForMerge, we're in merge mode
// and field.binaryValue() already returns the compressed value for a field
// with isCompressed()==true, so we disable compression in that case
bool disableCompression = (field is FieldsReader.FieldForMerge);
fieldsStream.WriteVInt(fi.number);
byte bits = 0;
if (field.IsTokenized())
bits |= FieldsWriter.FIELD_IS_TOKENIZED;
if (field.IsBinary())
bits |= FieldsWriter.FIELD_IS_BINARY;
if (field.IsCompressed())
bits |= FieldsWriter.FIELD_IS_COMPRESSED;
fieldsStream.WriteByte(bits);
if (field.IsCompressed())
{
// compression is enabled for the current field
byte[] data;
int len;
int offset;
if (disableCompression)
{
// optimized case for merging, the data
// is already compressed
data = field.GetBinaryValue();
System.Diagnostics.Debug.Assert(data != null);
len = field.GetBinaryLength();
offset = field.GetBinaryOffset();
}
else
{
// check if it is a binary field
if (field.IsBinary())
{
data = CompressionTools.Compress(field.GetBinaryValue(), field.GetBinaryOffset(), field.GetBinaryLength());
}
else
{
byte[] x = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(field.StringValue());
data = CompressionTools.Compress(x, 0, x.Length);
}
len = data.Length;
offset = 0;
}
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, offset, len);
}
else
{
// compression is disabled for the current field
if (field.IsBinary())
{
byte[] data;
int len;
int offset;
data = field.GetBinaryValue();
len = field.GetBinaryLength();
offset = field.GetBinaryOffset();
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, offset, len);
}
else
{
fieldsStream.WriteString(field.StringValue());
}
}
}
internal void WriteField(FieldInfo fi, Fieldable field)
{
// if the field as an instanceof FieldsReader.FieldForMerge, we're in merge mode
// and field.binaryValue() already returns the compressed value for a field
// with isCompressed()==true, so we disable compression in that case
bool disableCompression = (field is FieldsReader.FieldForMerge);
fieldsStream.WriteVInt(fi.number);
byte bits = 0;
if (field.IsTokenized())
{
bits |= FieldsWriter.FIELD_IS_TOKENIZED;
}
if (field.IsBinary())
{
bits |= FieldsWriter.FIELD_IS_BINARY;
}
if (field.IsCompressed())
{
bits |= FieldsWriter.FIELD_IS_COMPRESSED;
}
fieldsStream.WriteByte(bits);
if (field.IsCompressed())
{
// compression is enabled for the current field
byte[] data;
int len;
int offset;
if (disableCompression)
{
// optimized case for merging, the data
// is already compressed
data = field.GetBinaryValue();
System.Diagnostics.Debug.Assert(data != null);
len = field.GetBinaryLength();
offset = field.GetBinaryOffset();
}
else
{
// check if it is a binary field
if (field.IsBinary())
{
data = CompressionTools.Compress(field.GetBinaryValue(), field.GetBinaryOffset(), field.GetBinaryLength());
}
else
{
byte[] x = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(field.StringValue());
data = CompressionTools.Compress(x, 0, x.Length);
}
len = data.Length;
offset = 0;
}
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, offset, len);
}
else
{
// compression is disabled for the current field
if (field.IsBinary())
{
byte[] data;
int len;
int offset;
data = field.GetBinaryValue();
len = field.GetBinaryLength();
offset = field.GetBinaryOffset();
fieldsStream.WriteVInt(len);
fieldsStream.WriteBytes(data, offset, len);
}
else
{
fieldsStream.WriteString(field.StringValue());
}
}
}
public override void ProcessFields(Fieldable[] fields, int count)
{
fieldState.Reset(docState.doc.GetBoost());
int maxFieldLength = docState.maxFieldLength;
bool doInvert = consumer.Start(fields, count);
for (int i = 0; i < count; i++)
{
Fieldable field = fields[i];
// TODO FI: this should be "genericized" to querying
// consumer if it wants to see this particular field
// tokenized.
if (field.IsIndexed() && doInvert)
{
bool anyToken;
if (fieldState.length > 0)
{
fieldState.position += docState.analyzer.GetPositionIncrementGap(fieldInfo.name);
}
if (!field.IsTokenized())
{
// un-tokenized field
System.String stringValue = field.StringValue();
int valueLength = stringValue.Length;
perThread.singleTokenTokenStream.Reinit(stringValue, 0, valueLength);
fieldState.attributeSource = perThread.singleTokenTokenStream;
consumer.Start(field);
bool success = false;
try
{
consumer.Add();
success = true;
}
finally
{
if (!success)
{
docState.docWriter.SetAborting();
}
}
fieldState.offset += valueLength;
fieldState.length++;
fieldState.position++;
anyToken = valueLength > 0;
}
else
{
// tokenized field
TokenStream stream;
TokenStream streamValue = field.TokenStreamValue();
if (streamValue != null)
{
stream = streamValue;
}
else
{
// the field does not have a TokenStream,
// so we have to obtain one from the analyzer
System.IO.TextReader reader; // find or make Reader
System.IO.TextReader readerValue = field.ReaderValue();
if (readerValue != null)
{
reader = readerValue;
}
else
{
System.String stringValue = field.StringValue();
if (stringValue == null)
{
throw new System.ArgumentException("field must have either TokenStream, String or Reader value");
}
perThread.stringReader.Init(stringValue);
reader = perThread.stringReader;
}
// Tokenize field and add to postingTable
stream = docState.analyzer.ReusableTokenStream(fieldInfo.name, reader);
}
// reset the TokenStream to the first token
stream.Reset();
int startLength = fieldState.length;
// deprecated
bool allowMinus1Position = docState.allowMinus1Position;
try
{
int offsetEnd = fieldState.offset - 1;
bool hasMoreTokens = stream.IncrementToken();
fieldState.attributeSource = stream;
OffsetAttribute offsetAttribute = (OffsetAttribute)fieldState.attributeSource.AddAttribute(typeof(OffsetAttribute));
PositionIncrementAttribute posIncrAttribute = (PositionIncrementAttribute)fieldState.attributeSource.AddAttribute(typeof(PositionIncrementAttribute));
consumer.Start(field);
for (; ;)
{
// If we hit an exception in stream.next below
// (which is fairly common, eg if analyzer
// chokes on a given document), then it's
// non-aborting and (above) this one document
// will be marked as deleted, but still
// consume a docID
if (!hasMoreTokens)
{
break;
}
int posIncr = posIncrAttribute.GetPositionIncrement();
fieldState.position += posIncr;
if (allowMinus1Position || fieldState.position > 0)
{
fieldState.position--;
}
if (posIncr == 0)
{
fieldState.numOverlap++;
}
bool success = false;
try
{
// If we hit an exception in here, we abort
// all buffered documents since the last
// flush, on the likelihood that the
// internal state of the consumer is now
// corrupt and should not be flushed to a
// new segment:
consumer.Add();
success = true;
}
finally
{
if (!success)
{
docState.docWriter.SetAborting();
}
}
fieldState.position++;
offsetEnd = fieldState.offset + offsetAttribute.EndOffset();
if (++fieldState.length >= maxFieldLength)
{
if (docState.infoStream != null)
{
docState.infoStream.WriteLine("maxFieldLength " + maxFieldLength + " reached for field " + fieldInfo.name + ", ignoring following tokens");
}
break;
}
hasMoreTokens = stream.IncrementToken();
}
// trigger streams to perform end-of-stream operations
stream.End();
fieldState.offset += offsetAttribute.EndOffset();
anyToken = fieldState.length > startLength;
}
finally
{
stream.Close();
}
}
if (anyToken)
{
fieldState.offset += docState.analyzer.GetOffsetGap(field);
}
fieldState.boost *= field.GetBoost();
}
// LUCENE-2387: don't hang onto the field, so GC can
// reclaim
fields[i] = null;
}
consumer.Finish();
endConsumer.Finish();
}
