@Override
public Scorer scorer(
AtomicReaderContext context, boolean scoreDocsInOrder, boolean topScorer, Bits acceptDocs)
throws IOException {
if (stats == null) {
return null;
} else {
return new SpanScorer(
query.getSpans(context, acceptDocs, termContexts),
this,
similarity.sloppySimScorer(stats, context));
}
}
public SpanWeight(SpanQuery query, IndexSearcher searcher) throws IOException {
this.similarity = searcher.getSimilarity();
this.query = query;
termContexts = new HashMap<Term, TermContext>();
TreeSet<Term> terms = new TreeSet<Term>();
query.extractTerms(terms);
final IndexReaderContext context = searcher.getTopReaderContext();
final TermStatistics termStats[] = new TermStatistics[terms.size()];
int i = 0;
for (Term term : terms) {
TermContext state = TermContext.build(context, term, true);
termStats[i] = searcher.termStatistics(term, state);
termContexts.put(term, state);
i++;
}
final String field = query.getField();
if (field != null) {
stats =
similarity.computeWeight(
query.getBoost(), searcher.collectionStatistics(query.getField()), termStats);
}
}