public virtual Explanation Explain(IndexReader ir, int i)
{
Explanation inner = weight.Explain(ir, i);
if (Enclosing_Instance.GetBoost() != 1)
{
Explanation preBoost = inner;
inner = new Explanation(inner.GetValue() * Enclosing_Instance.GetBoost(), "product of:");
inner.AddDetail(new Explanation(Enclosing_Instance.GetBoost(), "boost"));
inner.AddDetail(preBoost);
}
Filter f = Enclosing_Instance.filter;
DocIdSetIterator docIdSetIterator = f.GetDocIdSet(ir).Iterator();
if (docIdSetIterator.SkipTo(i) && docIdSetIterator.Doc() == i)
{
return(inner);
}
else
{
Explanation result = new Explanation(0.0f, "failure to match filter: " + f.ToString());
result.AddDetail(inner);
return(result);
}
}
private bool AdvanceToCommon()
{
while (scorer.Doc() != docIdSetIterator.Doc())
{
if (scorer.Doc() < docIdSetIterator.Doc())
{
if (!scorer.SkipTo(docIdSetIterator.Doc()))
{
return(false);
}
}
else if (!docIdSetIterator.SkipTo(scorer.Doc()))
{
return(false);
}
}
return(true);
}
// inherit javadoc
public override void Search(Weight weight, Filter filter, HitCollector results)
{
Scorer scorer = weight.Scorer(reader);
if (scorer == null)
{
return;
}
if (filter == null)
{
scorer.Score(results);
return;
}
DocIdSetIterator filterDocIdIterator = filter.GetDocIdSet(reader).Iterator(); // CHECKME: use ConjunctionScorer here?
bool more = filterDocIdIterator.Next() && scorer.SkipTo(filterDocIdIterator.Doc());
while (more)
{
int filterDocId = filterDocIdIterator.Doc();
if (filterDocId > scorer.Doc() && !scorer.SkipTo(filterDocId))
{
more = false;
}
else
{
int scorerDocId = scorer.Doc();
if (scorerDocId == filterDocId) // permitted by filter
{
results.Collect(scorerDocId, scorer.Score());
more = filterDocIdIterator.Next();
}
else
{
more = filterDocIdIterator.SkipTo(scorerDocId);
}
}
}
}
public override int Doc()
{
return(docIdSetIterator.Doc());
}
