How to use

getSequentialSubReaders

method

in

org.apache.lucene.index.MultiReader

@Override
public CacheHelper getReaderCacheHelper() {
 // MultiReader instances can be short-lived, which would make caching trappy
 // so we do not cache on them, unless they wrap a single reader in which
 // case we delegate
 if (getSequentialSubReaders().size() == 1) {
  return getSequentialSubReaders().get(0).getReaderCacheHelper();
 }
 return null;
}

 @Override
 protected synchronized void doClose() throws IOException {
  IOException ioe = null;
  for (final IndexReader r : getSequentialSubReaders()) {
   try {
    if (closeSubReaders) {
     r.close();
    } else {
     r.decRef();
    }
   } catch (IOException e) {
    if (ioe == null) ioe = e;
   }
  }
  // throw the first exception
  if (ioe != null) throw ioe;
 }
}

@Override
public CacheHelper getReaderCacheHelper() {
 // MultiReader instances can be short-lived, which would make caching trappy
 // so we do not cache on them, unless they wrap a single reader in which
 // case we delegate
 if (getSequentialSubReaders().size() == 1) {
  return getSequentialSubReaders().get(0).getReaderCacheHelper();
 }
 return null;
}

 @Override
 protected synchronized void doClose() throws IOException {
  IOException ioe = null;
  for (final IndexReader r : getSequentialSubReaders()) {
   try {
    if (closeSubReaders) {
     r.close();
    } else {
     r.decRef();
    }
   } catch (IOException e) {
    if (ioe == null) ioe = e;
   }
  }
  // throw the first exception
  if (ioe != null) throw ioe;
 }
}

 @Override
 protected synchronized void doClose() throws IOException {
  IOException ioe = null;
  for (final IndexReader r : getSequentialSubReaders()) {
   try {
    if (closeSubReaders) {
     r.close();
    } else {
     r.decRef();
    }
   } catch (IOException e) {
    if (ioe == null) ioe = e;
   }
  }
  // throw the first exception
  if (ioe != null) throw ioe;
 }
}

 @Override
 protected synchronized void doClose() throws IOException {
  IOException ioe = null;
  for (final IndexReader r : getSequentialSubReaders()) {
   try {
    if (closeSubReaders) {
     r.close();
    } else {
     r.decRef();
    }
   } catch (IOException e) {
    if (ioe == null) ioe = e;
   }
  }
  // throw the first exception
  if (ioe != null) throw ioe;
 }
}