How to use

RoaringDocIdSet$Iterator

in

org.apache.lucene.util

@Override
public DocIdSetIterator iterator() throws IOException {
 if (cardinality == 0) {
  return null;
 }
 return new Iterator();
}

@Override
public int advance(int target) throws IOException {
 final int targetBlock = target >>> 16;
 if (targetBlock != block) {
  block = targetBlock;
  if (block >= docIdSets.length) {
   sub = null;
   return doc = NO_MORE_DOCS;
  }
  if (docIdSets[block] == null) {
   return firstDocFromNextBlock();
  }
  sub = docIdSets[block].iterator();
 }
 final int subNext = sub.advance(target & 0xFFFF);
 if (subNext == NO_MORE_DOCS) {
  return firstDocFromNextBlock();
 }
 return doc = (block << 16) | subNext;
}

@Override
public int advance(int target) throws IOException {
 final int targetBlock = target >>> 16;
 if (targetBlock != block) {
  block = targetBlock;
  if (block >= docIdSets.length) {
   sub = null;
   return doc = NO_MORE_DOCS;
  }
  if (docIdSets[block] == null) {
   return firstDocFromNextBlock();
  }
  sub = docIdSets[block].iterator();
 }
 final int subNext = sub.advance(target & 0xFFFF);
 if (subNext == NO_MORE_DOCS) {
  return firstDocFromNextBlock();
 }
 return doc = (block << 16) | subNext;
}

@Override
public int advance(int target) throws IOException {
 final int targetBlock = target >>> 16;
 if (targetBlock != block) {
  block = targetBlock;
  if (block >= docIdSets.length) {
   sub = null;
   return doc = NO_MORE_DOCS;
  }
  if (docIdSets[block] == null) {
   return firstDocFromNextBlock();
  }
  sub = docIdSets[block].iterator();
 }
 final int subNext = sub.advance(target & 0xFFFF);
 if (subNext == NO_MORE_DOCS) {
  return firstDocFromNextBlock();
 }
 return doc = (block << 16) | subNext;
}

@Override
public int nextDoc() throws IOException {
 final int subNext = sub.nextDoc();
 if (subNext == NO_MORE_DOCS) {
  return firstDocFromNextBlock();
 }
 return doc = (block << 16) | subNext;
}

@Override
public DocIdSetIterator iterator() throws IOException {
 if (cardinality == 0) {
  return null;
 }
 return new Iterator();
}

@Override
public int nextDoc() throws IOException {
 final int subNext = sub.nextDoc();
 if (subNext == NO_MORE_DOCS) {
  return firstDocFromNextBlock();
 }
 return doc = (block << 16) | subNext;
}

@Override
public DocIdSetIterator iterator() throws IOException {
 if (cardinality == 0) {
  return null;
 }
 return new Iterator();
}

@Override
public int nextDoc() throws IOException {
 final int subNext = sub.nextDoc();
 if (subNext == NO_MORE_DOCS) {
  return firstDocFromNextBlock();
 }
 return doc = (block << 16) | subNext;
}

@Override
public int advance(int target) throws IOException {
 final int targetBlock = target >>> 16;
 if (targetBlock != block) {
  block = targetBlock;
  if (block >= docIdSets.length) {
   sub = null;
   return doc = NO_MORE_DOCS;
  }
  if (docIdSets[block] == null) {
   return firstDocFromNextBlock();
  }
  sub = docIdSets[block].iterator();
 }
 final int subNext = sub.advance(target & 0xFFFF);
 if (subNext == NO_MORE_DOCS) {
  return firstDocFromNextBlock();
 }
 return doc = (block << 16) | subNext;
}

@Override
public DocIdSetIterator iterator() throws IOException {
 if (cardinality == 0) {
  return null;
 }
 return new Iterator();
}

@Override
public int nextDoc() throws IOException {
 final int subNext = sub.nextDoc();
 if (subNext == NO_MORE_DOCS) {
  return firstDocFromNextBlock();
 }
 return doc = (block << 16) | subNext;
}