/// <summary>
/// By default, uses the <seealso cref="PayloadFunction"/> to score the payloads, but
/// can be overridden to do other things.
/// </summary>
/// <param name="payLoads"> The payloads </param>
/// <param name="start"> The start position of the span being scored </param>
/// <param name="end"> The end position of the span being scored
/// </param>
/// <seealso cref= Spans </seealso>
protected internal virtual void ProcessPayloads(ICollection <byte[]> payLoads, int start, int end)
{
foreach (var thePayload in payLoads)
{
Scratch.Bytes = thePayload;
Scratch.Offset = 0;
Scratch.Length = thePayload.Length;
PayloadScore = OuterInstance.Function.CurrentScore(Doc, OuterInstance.FieldName, start, end, PayloadsSeen, PayloadScore, DocScorer.ComputePayloadFactor(Doc, Spans.Start(), Spans.End(), Scratch));
++PayloadsSeen;
}
}
public override bool LessThan(System.Object o1, System.Object o2)
{
Spans spans1 = (Spans)o1;
Spans spans2 = (Spans)o2;
if (spans1.Doc() == spans2.Doc())
{
if (spans1.Start() == spans2.Start())
{
return(spans1.End() < spans2.End());
}
else
{
return(spans1.Start() < spans2.Start());
}
}
else
{
return(spans1.Doc() < spans2.Doc());
}
}
public /*protected internal*/ virtual bool SetFreqCurrentDoc()
{
if (!more)
{
return(false);
}
doc = spans.Doc();
freq = 0.0f;
do
{
int matchLength = spans.End() - spans.Start();
freq += Similarity.SloppyFreq(matchLength);
more = spans.Next();
}while (more && (doc == spans.Doc()));
return(true);
}
protected internal override bool SetFreqCurrentDoc()
{
if (!More)
{
return(false);
}
Doc = Spans.Doc();
Freq_Renamed = 0.0f;
NumMatches = 0;
PayloadScore_Renamed = 0;
PayloadsSeen = 0;
while (More && Doc == Spans.Doc())
{
int matchLength = Spans.End() - Spans.Start();
Freq_Renamed += DocScorer.ComputeSlopFactor(matchLength);
NumMatches++;
ProcessPayload(OuterInstance.Similarity);
More = Spans.Next(); // this moves positions to the next match in this
// document
}
return(More || (Freq_Renamed != 0));
}
protected internal virtual void ProcessPayload(Similarity similarity)
{
if (TermSpans.PayloadAvailable)
{
DocsAndPositionsEnum postings = TermSpans.Postings;
Payload = postings.Payload;
if (Payload != null)
{
PayloadScore_Renamed = OuterInstance.OuterInstance.Function.CurrentScore(Doc, OuterInstance.OuterInstance.Term.Field, Spans.Start(), Spans.End(), PayloadsSeen, PayloadScore_Renamed, DocScorer.ComputePayloadFactor(Doc, Spans.Start(), Spans.End(), Payload));
}
else
{
PayloadScore_Renamed = OuterInstance.OuterInstance.Function.CurrentScore(Doc, OuterInstance.OuterInstance.Term.Field, Spans.Start(), Spans.End(), PayloadsSeen, PayloadScore_Renamed, 1F);
}
PayloadsSeen++;
}
else
{
// zero out the payload?
}
}
public virtual int Start()
{
return(spans.Start());
}
public virtual bool Next()
{
if (moreInclude)
{
// move to next include
moreInclude = includeSpans.Next();
}
while (moreInclude && moreExclude)
{
if (includeSpans.Doc() > excludeSpans.Doc())
{
// skip exclude
moreExclude = excludeSpans.SkipTo(includeSpans.Doc());
}
while (moreExclude && includeSpans.Doc() == excludeSpans.Doc() && excludeSpans.End() <= includeSpans.Start())
{
moreExclude = excludeSpans.Next(); // increment exclude
}
if (!moreExclude || includeSpans.Doc() != excludeSpans.Doc() || includeSpans.End() <= excludeSpans.Start())
{
break; // we found a match
}
moreInclude = includeSpans.Next(); // intersected: keep scanning
}
return(moreInclude);
}