@Override
public void readFully(TreeMap<Slice, Slice> data) throws IOException
{
  scanner.rewind();
  for (; !scanner.atEnd(); scanner.advance()) {
    Entry en = scanner.entry();
    int klen = en.getKeyLength();
    int vlen = en.getValueLength();
    byte[] key = new byte[klen];
    byte[] value = new byte[vlen];
    en.getKey(key);
    en.getValue(value);
    data.put(new Slice(key, 0, key.length), new Slice(value, 0, value.length));
  }

}
 

@Override
public boolean peek(Slice key, Slice value) throws IOException
{
  if (scanner.atEnd()) {
    return false;
  }
  Entry en = scanner.entry();
  byte[] rkey = new byte[en.getKeyLength()];
  byte[] rval = new byte[en.getValueLength()];
  en.getKey(rkey);
  en.getValue(rval);

  key.buffer = rkey;
  key.offset = 0;
  key.length = en.getKeyLength();

  value.buffer = rval;
  value.offset = 0;
  value.length = en.getValueLength();

  return true;
}
 

@Override
public boolean next() throws IOException {
  if (scanner.atEnd()) return false;
  Entry entry = scanner.entry();
  keyLength = entry.getKeyLength();
  checkKeyBuffer(keyLength);
  entry.getKey(keyBuffer);
  valueLength = entry.getValueLength();
  checkValueBuffer(valueLength);
  entry.getValue(valueBuffer);
  scanner.advance();
  return true;
}
 

@Override
public boolean next() throws IOException {
  if (scanner.atEnd()) return false;
  Entry entry = scanner.entry();
  keyLength = entry.getKeyLength();
  checkKeyBuffer(keyLength);
  entry.getKey(keyBuffer);
  valueLength = entry.getValueLength();
  checkValueBuffer(valueLength);
  entry.getValue(valueBuffer);
  scanner.advance();
  return true;
}
 

public boolean next() throws IOException {
  if (scanner.atEnd()) return false;
  Entry entry = scanner.entry();
  keyLength = entry.getKeyLength();
  checkKeyBuffer(keyLength);
  entry.getKey(keyBuffer);
  valueLength = entry.getValueLength();
  checkValueBuffer(valueLength);
  entry.getValue(valueBuffer);
  scanner.advance();
  return true;
}
 

public boolean next() throws IOException {
  if (scanner.atEnd()) return false;
  Entry entry = scanner.entry();
  keyLength = entry.getKeyLength();
  checkKeyBuffer(keyLength);
  entry.getKey(keyBuffer);
  valueLength = entry.getValueLength();
  checkValueBuffer(valueLength);
  entry.getValue(valueBuffer);
  scanner.advance();
  return true;
}