/**
 * 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 backtype.storm.task;

import java.util.Collection;
import java.util.List;

import backtype.storm.tuple.Tuple;

public interface IOutputCollector extends IErrorReporter {
  /**
   * Returns the task ids that received the tuples.
   * @param  streamId the stream id
   * @param anchors the anchors
   * @param tuple the tuple
   * @return the task ids that recieved the tuples
   */
  List<Integer> emit(String streamId, Collection<Tuple> anchors, List<Object> tuple);

  void emitDirect(int taskId, String streamId, Collection<Tuple> anchors, List<Object> tuple);

  void ack(Tuple input);

  void fail(Tuple input);
}