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.operation.builtin;
  
  import storm.trident.state.ITupleCollection;
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import storm.trident.operation.TridentCollector;
  import storm.trident.state.BaseQueryFunction;
  import storm.trident.state.State;
  import storm.trident.tuple.TridentTuple;
  
  public class TupleCollectionGet extends BaseQueryFunction<State, Iterator<List<Object>>> {
  
      @Override
      public List<Iterator<List<Object>>> batchRetrieve(State state, List<TridentTuple> args) {
          List<Iterator<List<Object>>> ret = new ArrayList<>(args.size());
          for (TridentTuple arg : args) {
              ret.add(((ITupleCollection) state).getTuples());
          }
          return ret;
      }
  
      @Override
      public void execute(TridentTuple tuple, Iterator<List<Object>> tuplesIterator, TridentCollector collector) {
          while (tuplesIterator.hasNext()) {
              collector.emit(tuplesIterator.next());
          }
      }
  }
  