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 backtype.storm.tuple;
  
  import backtype.storm.generated.GlobalStreamId;
  
  /**
   * The tuple is the main data structure in Storm. A tuple is a named list of values, where each value can be any type.
   * Tuples are dynamically typed -- the types of the fields do not need to be declared.
   * Tuples have helper methods like getInteger and getString to get field values without having to cast the result.
   *
   * Storm needs to know how to serialize all the values in a tuple.
   * By default, Storm knows how to serialize the primitive types, strings, and byte arrays.
   * If you want to use another type, you'll need to implement and register a serializer for that type.
   * See {@link https://github.com/nathanmarz/storm/wiki/Serialization} for more info.
   */
  public interface Tuple extends ITuple {
  
      /**
       * Returns the global stream id (component + stream) of this tuple.
       */
      GlobalStreamId getSourceGlobalStreamid();
  
      /**
       * Gets the id of the component that created this tuple.
       */
      String getSourceComponent();
  
      /**
       * Gets the id of the task that created this tuple.
       */
      int getSourceTask();
  
      /**
       * Gets the id of the stream that this tuple was emitted to.
       */
      String getSourceStreamId();
  
      /**
       * Gets the message id that associated with this tuple.
       */
      MessageId getMessageId();
  }
  