content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 storm.trident.state.map;
  
  import storm.trident.state.ValueUpdater;
  
  import java.util.ArrayList;
  import java.util.List;
  
  
  public class NonTransactionalMap<T> implements MapState<T> {
      public static <T> MapState<T> build(IBackingMap<T> backing) {
          return new NonTransactionalMap<T>(backing);
      }
      
      IBackingMap<T> _backing;
      
      protected NonTransactionalMap(IBackingMap<T> backing) {
          _backing = backing;
      }
      
      @Override
      public List<T> multiGet(List<List<Object>> keys) {
          return _backing.multiGet(keys);
      }
  
      @Override
      public List<T> multiUpdate(List<List<Object>> keys, List<ValueUpdater> updaters) {
          List<T> curr = _backing.multiGet(keys);
          List<T> ret = new ArrayList<T>(curr.size());
          for(int i=0; i<curr.size(); i++) {
              T currVal = curr.get(i);
              ValueUpdater<T> updater = updaters.get(i);
              ret.add(updater.update(currVal));
          }
          _backing.multiPut(keys, ret);
          return ret;
      }
  
      @Override
      public void multiPut(List<List<Object>> keys, List<T> vals) {
          _backing.multiPut(keys, vals);
      }
  
      @Override
      public void beginCommit(Long txid) {
      }
  
      @Override
      public void commit(Long txid) {
      }  
  }
  