/**
* {@inheritDoc}
*
* <p>Returns a {@link MultiScorer} if the passed <code>reader</code> is of type {@link
* MultiIndexReader}.
*/
public Scorer scorer(IndexReader reader, boolean scoreDocsInOrder, boolean topScorer)
throws IOException {
if (reader instanceof MultiIndexReader) {
MultiIndexReader mir = (MultiIndexReader) reader;
IndexReader[] readers = mir.getIndexReaders();
int[] starts = new int[readers.length + 1];
int maxDoc = 0;
for (int i = 0; i < readers.length; i++) {
starts[i] = maxDoc;
maxDoc += readers[i].maxDoc();
}
starts[readers.length] = maxDoc;
Scorer[] scorers = new Scorer[readers.length];
for (int i = 0; i < readers.length; i++) {
scorers[i] = scorer(readers[i], scoreDocsInOrder, false);
}
return new MultiScorer(searcher.getSimilarity(), scorers, starts);
} else {
return createScorer(reader, scoreDocsInOrder, topScorer);
}
}
public MatchNoneDocsWeight(Searcher searcher) {
this.similarity = searcher.getSimilarity();
}