content: /*
   *  Copyright (C) 2017-present Albie Liang. All rights reserved.
   *
   *  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.
   *
   */
  
  package cc.suitalk.ipcinvoker.sample.app.model;
  
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * Created by albieliang on 2017/6/3.
   */
  
  public class DataCenter {
  
      private Map<String, Object> mMap;
  
      private static DataCenter sImpl;
  
      public static DataCenter getImpl() {
          if (sImpl == null) {
              synchronized (DataCenter.class) {
                  if (sImpl == null) {
                      sImpl = new DataCenter();
                  }
              }
          }
          return sImpl;
      }
  
      private DataCenter() {
          mMap = new HashMap<>();
      }
  
      public Map<String, Object> getMap() {
          return mMap;
      }
  
      public String getString(String key) {
          if (key == null || key.length() == 0) {
              return null;
          }
          Object o = mMap.get(key);
          if (o instanceof String) {
              return (String) o;
          }
          return null;
      }
  
      public void putString(String key, String value) {
          if (key == null || key.length() == 0) {
              return;
          }
          mMap.put(key, value);
      }
  }
  