/**
* test does not imply that skipTo(doc+1) should work exactly the same as next -- it's only
* applicable in this case since we know doc does not contain more than one span
*/
public void testNearSpansSkipToLikeNext() throws Exception {
SpanNearQuery q = makeQuery();
Spans span = q.getSpans(searcher.getIndexReader());
assertEquals(true, span.skipTo(0));
assertEquals(s(0, 0, 3), s(span));
assertEquals(true, span.skipTo(1));
assertEquals(s(1, 0, 4), s(span));
assertEquals(false, span.skipTo(2));
}
@Override
public int advance(int target) throws IOException {
if (!more) {
return doc = NO_MORE_DOCS;
}
if (spans.doc() < target) { // setFreqCurrentDoc() leaves spans.doc() ahead
more = spans.skipTo(target);
}
if (!setFreqCurrentDoc()) {
doc = NO_MORE_DOCS;
}
return doc;
}
protected boolean doNext() throws IOException {
for (; ; ) {
switch (acceptPosition(this)) {
case YES:
return true;
case NO:
if (!spans.next()) return false;
break;
case NO_AND_ADVANCE:
if (!spans.skipTo(spans.doc() + 1)) return false;
break;
}
}
}
public boolean skipTo(int target) throws IOException {
more = spans.skipTo(target);
if (!more) return false;
freq = 0.0f;
doc = spans.doc();
while (more && spans.doc() == target) {
freq += getSimilarity().sloppyFreq(spans.end() - spans.start());
more = spans.next();
}
return more || freq != 0.0f;
}
public boolean skipTo(int target) throws IOException {
if (length != -1) // subtract old length
totalLength -= length;
boolean more = spans.skipTo(target); // skip
if (more) {
length = end() - start(); // compute new length
totalLength += length; // add new length to total
if (max == null
|| doc() > max.doc()
|| // maintain max
(doc() == max.doc() && end() > max.end())) max = this;
}
return more;
}
public void testNearSpansSkipPast() throws Exception {
SpanNearQuery q = makeQuery();
Spans span = q.getSpans(searcher.getIndexReader());
assertEquals(false, span.skipTo(2));
}
@Override
public boolean skipTo(int target) throws IOException {
if (!spans.skipTo(target)) return false;
return doNext();
}