/**
* Collect all Spans extracted from a Scorer using a SpanCollector
*
* @param scorer the scorer to extract Spans from
* @param collector the SpanCollector
* @param errorOnNoSpans if true, throw an error if no Spans can be extracted from the Scorer or
* any of its children
* @throws IOException on error
*/
public static void collect(Scorer scorer, SpanCollector collector, boolean errorOnNoSpans)
throws IOException {
List<Spans> allSpans = getSpans(scorer, errorOnNoSpans);
int doc = scorer.docID();
for (Spans spans : allSpans) {
int spanDoc = spans.docID();
// if the Scorer advances lazily, then not all of its subspans may be on
// the correct document
if (spanDoc == doc || (spanDoc < doc && spans.advance(doc) == doc)) {
while (spans.nextStartPosition() != Spans.NO_MORE_POSITIONS) {
spans.collect(collector);
}
}
}
}
@Override
public void collect(SpanCollector collector) throws IOException {
in.collect(collector);
}
