public override Scorer GetScorer(AtomicReaderContext context, IBits acceptDocs)
{
Debug.Assert(outerInstance.termArrays.Count > 0);
AtomicReader reader = (context.AtomicReader);
IBits liveDocs = acceptDocs;
PhraseQuery.PostingsAndFreq[] postingsFreqs = new PhraseQuery.PostingsAndFreq[outerInstance.termArrays.Count];
Terms fieldTerms = reader.GetTerms(outerInstance.field);
if (fieldTerms == null)
{
return(null);
}
// Reuse single TermsEnum below:
TermsEnum termsEnum = fieldTerms.GetIterator(null);
for (int pos = 0; pos < postingsFreqs.Length; pos++)
{
Term[] terms = outerInstance.termArrays[pos];
DocsAndPositionsEnum postingsEnum;
int docFreq;
if (terms.Length > 1)
{
postingsEnum = new UnionDocsAndPositionsEnum(liveDocs, context, terms, termContexts, termsEnum);
// coarse -- this overcounts since a given doc can
// have more than one term:
docFreq = 0;
for (int termIdx = 0; termIdx < terms.Length; termIdx++)
{
Term term = terms[termIdx];
TermState termState = termContexts[term].Get(context.Ord);
if (termState == null)
{
// Term not in reader
continue;
}
termsEnum.SeekExact(term.Bytes, termState);
docFreq += termsEnum.DocFreq;
}
if (docFreq == 0)
{
// None of the terms are in this reader
return(null);
}
}
else
{
Term term = terms[0];
TermState termState = termContexts[term].Get(context.Ord);
if (termState == null)
{
// Term not in reader
return(null);
}
termsEnum.SeekExact(term.Bytes, termState);
postingsEnum = termsEnum.DocsAndPositions(liveDocs, null, DocsAndPositionsFlags.NONE);
if (postingsEnum == null)
{
// term does exist, but has no positions
Debug.Assert(termsEnum.Docs(liveDocs, null, DocsFlags.NONE) != null, "termstate found but no term exists in reader");
throw new InvalidOperationException("field \"" + term.Field + "\" was indexed without position data; cannot run PhraseQuery (term=" + term.Text() + ")");
}
docFreq = termsEnum.DocFreq;
}
postingsFreqs[pos] = new PhraseQuery.PostingsAndFreq(postingsEnum, docFreq, (int)outerInstance.positions[pos], terms);
}
// sort by increasing docFreq order
if (outerInstance.slop == 0)
{
ArrayUtil.TimSort(postingsFreqs);
}
if (outerInstance.slop == 0)
{
ExactPhraseScorer s = new ExactPhraseScorer(this, postingsFreqs, similarity.GetSimScorer(stats, context));
if (s.noDocs)
{
return(null);
}
else
{
return(s);
}
}
else
{
return(new SloppyPhraseScorer(this, postingsFreqs, outerInstance.slop, similarity.GetSimScorer(stats, context)));
}
}
public override Scorer GetScorer(AtomicReaderContext context, IBits acceptDocs)
{
Debug.Assert(outerInstance.terms.Count > 0);
AtomicReader reader = context.AtomicReader;
IBits liveDocs = acceptDocs;
PostingsAndFreq[] postingsFreqs = new PostingsAndFreq[outerInstance.terms.Count];
Terms fieldTerms = reader.GetTerms(outerInstance.field);
if (fieldTerms == null)
{
return(null);
}
// Reuse single TermsEnum below:
TermsEnum te = fieldTerms.GetIterator(null);
for (int i = 0; i < outerInstance.terms.Count; i++)
{
Term t = outerInstance.terms[i];
TermState state = states[i].Get(context.Ord);
if (state == null) // term doesnt exist in this segment
{
Debug.Assert(TermNotInReader(reader, t), "no termstate found but term exists in reader");
return(null);
}
te.SeekExact(t.Bytes, state);
DocsAndPositionsEnum postingsEnum = te.DocsAndPositions(liveDocs, null, DocsAndPositionsFlags.NONE);
// PhraseQuery on a field that did not index
// positions.
if (postingsEnum == null)
{
Debug.Assert(te.SeekExact(t.Bytes), "termstate found but no term exists in reader");
// term does exist, but has no positions
throw new InvalidOperationException("field \"" + t.Field + "\" was indexed without position data; cannot run PhraseQuery (term=" + t.Text() + ")");
}
postingsFreqs[i] = new PostingsAndFreq(postingsEnum, te.DocFreq, (int)outerInstance.positions[i], t);
}
// sort by increasing docFreq order
if (outerInstance.slop == 0)
{
ArrayUtil.TimSort(postingsFreqs);
}
if (outerInstance.slop == 0) // optimize exact case
{
ExactPhraseScorer s = new ExactPhraseScorer(this, postingsFreqs, similarity.GetSimScorer(stats, context));
if (s.noDocs)
{
return(null);
}
else
{
return(s);
}
}
else
{
return(new SloppyPhraseScorer(this, postingsFreqs, outerInstance.slop, similarity.GetSimScorer(stats, context)));
}
}