refactor: simplify api using encapsulating parameters and results

[foreverneverer]

Note

The latest design has been updated in #122, the current some implement is outdated and need be refactored

Summary

#122 has described the design, this PR implement it and contain follow point:

• every request content is wrapper one class, for example, Set(hashKey, sortKey, value)-> Set(set)
• discard batchMultiXXX API
• discard multiGetSortKeys API
• maintain checkAndSet/checkAndMutate/compareAndChange/Scanner
• batch future task was encapsulated into class futureGroup and usage:

  @Override
  public int batchSet(BatchSet batchSet, List<Pair<PException, Void>> results, int timeout)
      throws PException {
    if (results == null) {
      throw new PException("Invalid parameter: results should not be null");
    }
    results.clear();
    FutureGroup<Void> futureGroup =
        new FutureGroup<>(batchSet.setList.size(), batchSet.forceComplete);

    for (Set set : batchSet.setList) {
      futureGroup.add(asyncSet(set, timeout));
    }
    return futureGroup.waitAllComplete(results, timeout);
  }

New API list

async

  public Future<Boolean> asyncExist(Get get, int timeout /*ms*/);
  public Future<Integer> asyncTTL(Get get, int timeout /*ms*/);
  public Future<Long> asyncIncr(Increment increment, int timeout /*ms*/);

  public Future<byte[]> asyncGet(Get get, int timeout /*ms*/);
  public Future<MultiGetResult> asyncRangeGet(RangeGet rangeGet, int timeout /*ms*/)
      throws PException;
  public Future<MultiGetResult> asyncMultiGet(MultiGet multiGet, int timeout /*ms*/);

  public Future<Void> asyncSet(Set set, int timeout /*ms*/);
  public Future<Void> asyncMultiSet(MultiSet multiSet, int timeout /*ms*/);

  public Future<Void> asyncDel(Delete delete, int timeout /*ms*/);
  public Future<Void> asyncMultiDel(MultiDelete multiDelete, int timeout /*ms*/);

sync

  public byte[] get(Get get, int timeout) throws PException;
  public void batchGet(BatchGet batchGet, List<Pair<PException, byte[]>> results, int timeout)
      throws PException;
  public MultiGetResult multiGet(MultiGet multiGet, int timeout) throws PException;
  public MultiGetResult rangeGet(RangeGet rangeGet, int timeout) throws PException;

  public void set(Set set, int timeout) throws PException;
  public int batchSet(BatchSet batchSet, List<Pair<PException, Void>> results, int timeout)
      throws PException;
  public void multiSet(MultiSet multiSet, int timeout) throws PException;

  public void del(Delete delete, int timeout) throws PException;
  public int batchDel(BatchDelete batchDelete, List<Pair<PException, Void>> results, int timeout)
      throws PException;
  public void multiDel(MultiDelete multiDelete, int timeout) throws PException;
  public void rangeDel(RangeDelete rangeDelete, int timeout) throws PException;

  public int ttl(Get get, int timeout) throws PException;
  public long incr(Increment increment, int timeout) throws PException;
  public boolean exist(Get get, int timeout) throws PException;