How to use

incRef

method

in

org.apache.lucene.util.RefCount

/** Returns the {@link DocValuesProducer} for the given generation. */
synchronized DocValuesProducer getDocValuesProducer(long gen, SegmentCommitInfo si, Directory dir, FieldInfos infos) throws IOException {
 RefCount<DocValuesProducer> dvp = genDVProducers.get(gen);
 if (dvp == null) {
  dvp = newDocValuesProducer(si, dir, gen, infos);
  assert dvp != null;
  genDVProducers.put(gen, dvp);
 } else {
  dvp.incRef();
 }
 return dvp.get();
}

/** Returns the {@link DocValuesProducer} for the given generation. */
synchronized DocValuesProducer getDocValuesProducer(long gen, SegmentCommitInfo si, Directory dir, FieldInfos infos) throws IOException {
 RefCount<DocValuesProducer> dvp = genDVProducers.get(gen);
 if (dvp == null) {
  dvp = newDocValuesProducer(si, dir, gen, infos);
  assert dvp != null;
  genDVProducers.put(gen, dvp);
 } else {
  dvp.incRef();
 }
 return dvp.get();
}

/** Returns the {@link DocValuesProducer} for the given generation. */
synchronized DocValuesProducer getDocValuesProducer(long gen, SegmentCommitInfo si, Directory dir, FieldInfos infos) throws IOException {
 RefCount<DocValuesProducer> dvp = genDVProducers.get(gen);
 if (dvp == null) {
  dvp = newDocValuesProducer(si, dir, gen, infos);
  assert dvp != null;
  genDVProducers.put(gen, dvp);
 } else {
  dvp.incRef();
 }
 return dvp.get();
}

/** Returns the {@link DocValuesProducer} for the given generation. */
synchronized DocValuesProducer getDocValuesProducer(long gen, SegmentCommitInfo si, Directory dir, FieldInfos infos) throws IOException {
 RefCount<DocValuesProducer> dvp = genDVProducers.get(gen);
 if (dvp == null) {
  dvp = newDocValuesProducer(si, dir, gen, infos);
  assert dvp != null;
  genDVProducers.put(gen, dvp);
 } else {
  dvp.incRef();
 }
 return dvp.get();
}