public BytesRef next() throws IOException {
for (LeafSource top : competitiveLeafs) {
if (top.next() != null) {
sources.add(top);
}
}
competitiveLeafs.clear();
if (sources.size() == 0) {
return null;
}
do {
LeafSource competitiveLeaf = sources.pop();
competitiveLeafs.add(competitiveLeaf);
} while (sources.size() > 0 && competitiveLeafs.get(0).current.equals(sources.top().current));
return competitiveLeafs.get(0).current;
}
private TermIterator(
IndexFieldData.WithOrdinals indexFieldData,
List<AtomicReaderContext> leaves,
AtomicFieldData.WithOrdinals[] withOrdinals)
throws IOException {
this.sources = new LeafSourceQueue(leaves.size());
for (int i = 0; i < leaves.size(); i++) {
AtomicReaderContext atomicReaderContext = leaves.get(i);
AtomicFieldData.WithOrdinals afd = indexFieldData.load(atomicReaderContext);
withOrdinals[i] = afd;
LeafSource leafSource = new LeafSource(afd, atomicReaderContext);
if (leafSource.current != null) {
sources.add(leafSource);
}
}
}
