public override byte[] Norms(String fieldName)
{
byte[] norms = cachedNorms;
Similarity sim = GetSimilarity();
if (fieldName != cachedFieldName || sim != cachedSimilarity)
{
// not cached?
Info info = GetInfo(fieldName);
int numTokens = info != null ? info.NumTokens : 0;
int numOverlapTokens = info != null ? info.NumOverlapTokens : 0;
float boost = info != null ? info.Boost : 1.0f;
FieldInvertState invertState = new FieldInvertState(0, numTokens, numOverlapTokens, 0, boost);
float n = sim.ComputeNorm(fieldName, invertState);
byte norm = Similarity.EncodeNorm(n);
norms = new byte[] { norm };
// cache it for future reuse
cachedNorms = norms;
cachedFieldName = fieldName;
cachedSimilarity = sim;
if (DEBUG)
{
System.Diagnostics.Debug.WriteLine("MemoryIndexReader.norms: " + fieldName + ":" + n + ":" +
norm + ":" + numTokens);
}
}
return(norms);
}
public override NumericDocValues GetNormValues(string field)
{
FieldInfo fieldInfo;
if (!outerInstance.fieldInfos.TryGetValue(field, out fieldInfo) || fieldInfo.OmitsNorms())
{
return(null);
}
NumericDocValues norms = cachedNormValues;
Similarity sim = Similarity;
if (!field.Equals(cachedFieldName) || sim != cachedSimilarity) // not cached?
{
Info info = GetInfo(field);
int numTokens = info != null ? info.numTokens : 0;
int numOverlapTokens = info != null ? info.numOverlapTokens : 0;
float boost = info != null ? info.Boost : 1.0f;
FieldInvertState invertState = new FieldInvertState(field, 0, numTokens, numOverlapTokens, 0, boost);
long value = sim.ComputeNorm(invertState);
norms = new MemoryIndexNormDocValues(value);
// cache it for future reuse
cachedNormValues = norms;
cachedFieldName = field;
cachedSimilarity = sim;
#if DEBUG
Debug.WriteLine("MemoryIndexReader.norms: " + field + ":" + value + ":" + numTokens);
#endif
}
return(norms);
}
public override long ComputeNorm(FieldInvertState state)
{
if (state.Name.Equals(NORMS_FIELD, StringComparison.Ordinal))
{
return(Number.SingleToInt32Bits(state.Boost));
}
else
{
return(@in.ComputeNorm(state));
}
}
public override long ComputeNorm(FieldInvertState state)
{
if (state.Name.Equals(NORMS_FIELD))
{
return(Number.FloatToIntBits(state.Boost));
}
else
{
return(@in.ComputeNorm(state));
}
}
internal override void Finish()
{
if (fieldInfo.IsIndexed && !fieldInfo.OmitsNorms)
{
if (consumer == null)
{
fieldInfo.NormType = DocValuesType.NUMERIC;
consumer = new NumericDocValuesWriter(fieldInfo, docState.docWriter.bytesUsed, false);
}
consumer.AddValue(docState.docID, similarity.ComputeNorm(fieldState));
}
}
internal override void Finish()
{
if (FieldInfo.Indexed && !FieldInfo.OmitsNorms())
{
if (Consumer == null)
{
FieldInfo.NormType = FieldInfo.DocValuesType_e.NUMERIC;
Consumer = new NumericDocValuesWriter(FieldInfo, DocState.DocWriter.bytesUsed, false);
}
Consumer.AddValue(DocState.DocID, Similarity.ComputeNorm(FieldState));
}
}
public static byte ComputeAndGetNorm(Similarity s, FieldInvertState state)
{
return((byte)s.ComputeNorm(state));
}