/**
 * Copyright 2008 - 2015 The Loon Game Engine Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 *
 * @project loon
 * @author cping
 * @email：javachenpeng@yahoo.com
 * @version 0.5
 */
package loon;

public interface Save {

  interface Batch {

    void setItem(String key, String data);

    void removeItem(String key);

    void commit();
  }

  public void setItem(String key, String data);

  public void removeItem(String key);

  public String getItem(String key);

  public Batch startBatch();

  public Iterable<String> keys();

  public boolean isPersisted();
}
