How to use

nextDoc

method

in

org.apache.lucene.index.PostingsEnum

@Override
public int nextDoc() throws IOException {
 return in.nextDoc();
}

@Override
public int nextDoc() throws IOException {
 while(true) {
  if (current == null) {
   if (upto == numSubs-1) {
    return this.doc = NO_MORE_DOCS;
   } else {
    upto++;
    current = subs[upto].postingsEnum;
    currentBase = subs[upto].slice.start;
   }
  }
  final int doc = current.nextDoc();
  if (doc != NO_MORE_DOCS) {
   return this.doc = currentBase + doc;
  } else {
   current = null;
  }
 }
}

 @Override
 public int nextDoc() {
  try {
   return postings.nextDoc();
  } catch (IOException ioe) {
   throw new RuntimeException(ioe);
  }
 }
}

@Override
public int nextDoc() throws IOException {
 doc = postings.nextDoc();
 if (doc != DocIdSetIterator.NO_MORE_DOCS) {
  freq = postings.freq();
  assert freq >= 1;
  count = 0;
 }
 position = -1;
 return doc;
}

@Override
public int advance(int target) throws IOException {
 assert target > doc;
 while(true) {
  if (current != null) {
   final int doc;
   if (target < currentBase) {
    // target was in the previous slice but there was no matching doc after it
    doc = current.nextDoc();
   } else {
    doc = current.advance(target-currentBase);
   }
   if (doc == NO_MORE_DOCS) {
    current = null;
   } else {
    return this.doc = doc + currentBase;
   }
  } else if (upto == numSubs-1) {
   return this.doc = NO_MORE_DOCS;
  } else {
   upto++;
   current = subs[upto].postingsEnum;
   currentBase = subs[upto].slice.start;
  }
 }
}

private int getDocumentFrequency(final IntsHolder documentIds, final int docBase, final PostingsEnum postingsEnum)
    throws IOException {
  int weight = 0;
  while (postingsEnum.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
    if (documentIds.has(docBase + postingsEnum.docID())) {
      weight++;
    }
  }
  return normalizeDocumentFrequency(weight, documentIds.numberOfElements());
}

@Override
public int nextDoc() throws IOException {
 PostingsEnum top = docsQueue.top();
 int doc = top.docID();
 do {
  top.nextDoc();
  top = docsQueue.updateTop();
 } while (top.docID() == doc);
 return top.docID();
}

while (postsIter.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
  ++n;

assert delDocLimit < PostingsEnum.NO_MORE_DOCS;
while (true) {
 int doc = postingsEnum.nextDoc();
 if (doc < delDocLimit) {
  if (state.liveDocs == null) {

private int getPhraseScore(final ComplexQueryData data, final int docBase, final PostingsEnum postingsEnum)
    throws IOException {
  int weight = 0;
  while (postingsEnum.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
    int docId = postingsEnum.docID();
    if (data.documentIds.has(docBase + docId)) {
      IntsHolder positions = data.scorer.getPositions(docBase + docId);
      if (positions == null) {
        continue;
      }
      int freq = postingsEnum.freq();
      for (int i = 0; i < freq; i++) {
        int pos = postingsEnum.nextPosition();
        if (positions.has(pos)) {
          weight++;
        }
      }
    }
  }
  return weight;
}

 freqs = new int[docs.length];
while ((doc = in.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS){
 if (i >= docs.length) {
  docs = ArrayUtil.grow(docs, docs.length + 1);
while ((doc = in.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS){
 if (i >= docs.length) {
  docs = ArrayUtil.grow(docs, docs.length + 1);

int doc = postingsEnum.nextDoc();
if (doc == DocIdSetIterator.NO_MORE_DOCS) {
 break;

long totalTermFreq = 0;
while(true) {
 final int doc = postings.nextDoc();
 if (doc == DocIdSetIterator.NO_MORE_DOCS) {
  break;
   final int nextDocID = postings.nextDoc();
   if (nextDocID == DocIdSetIterator.NO_MORE_DOCS) {
    break;
    throw new RuntimeException("term " + term + ": advance(docID=" + skipDocID + ") returned docID=" + docID);
   final int nextDocID = postings.nextDoc();
   if (nextDocID == DocIdSetIterator.NO_MORE_DOCS) {
    break;
 PostingsEnum d = termsEnum.postings(null, PostingsEnum.NONE);
 int docFreq = 0;
 while (d.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
  docFreq++;

final int doc = postings.nextDoc();

while ((docID = postingsEnum.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS) {

while ((doc = postingsEnum.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS) {
 if (acceptDocs == null || acceptDocs.get(doc)) {
while ((doc = postingsEnum.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS) {
 if (doc >= limit) {
  break; // no more docs that can be updated for this term

long totalTermFreq = 0;
while (true) {
 int docID = postingsEnum.nextDoc();
 if (docID == PostingsEnum.NO_MORE_DOCS) {
  break;

assert docsAndPositionsEnum != null;
final int docID = docsAndPositionsEnum.nextDoc();
assert docID != DocIdSetIterator.NO_MORE_DOCS;
assert docsAndPositionsEnum.freq() == freq;

assert docsAndPositionsEnum != null;
final int docID = docsAndPositionsEnum.nextDoc();
assert docID != DocIdSetIterator.NO_MORE_DOCS;
assert docsAndPositionsEnum.freq() == freq;

int doc;
int i = 0;
while ((doc = in.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS) {
 if (i == docs.length) {
  final int newLength = ArrayUtil.oversize(i + 1, 4);