    001/*
    002 * Copyright (c) 2007-2016 Concurrent, Inc. All Rights Reserved.
    003 *
    004 * Project and contact information: http://www.cascading.org/
    005 *
    006 * This file is part of the Cascading project.
    007 *
    008 * Licensed under the Apache License, Version 2.0 (the "License");
    009 * you may not use this file except in compliance with the License.
    010 * You may obtain a copy of the License at
    011 *
    012 *     http://www.apache.org/licenses/LICENSE-2.0
    013 *
    014 * Unless required by applicable law or agreed to in writing, software
    015 * distributed under the License is distributed on an "AS IS" BASIS,
    016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    017 * See the License for the specific language governing permissions and
    018 * limitations under the License.
    019 */
    020
    021package cascading.flow.stream.duct;
    022
    023/**
    024 *
    025 */
    026public class Fork<Incoming, Outgoing> extends Duct<Incoming, Outgoing>
    027  {
    028  protected final Duct[] allNext;
    029
    030  public Fork( Duct[] allNext )
    031    {
    032    this.allNext = allNext;
    033    }
    034
    035  @Override
    036  public Duct getNext()
    037    {
    038    // doesn't matter, next after a fork always takes value fields, not grouping fields.
    039    return allNext[ 0 ];
    040    }
    041
    042  @Override
    043  public void start( Duct previous )
    044    {
    045    for( int i = 0; i < allNext.length; i++ )
    046      allNext[ i ].start( previous );
    047    }
    048
    049  @Override
    050  public void receive( Duct previous, Incoming incoming )
    051    {
    052    for( int i = 0; i < allNext.length; i++ )
    053      allNext[ i ].receive( previous, incoming );
    054    }
    055
    056  @Override
    057  public void complete( Duct previous )
    058    {
    059    for( int i = 0; i < allNext.length; i++ )
    060      allNext[ i ].complete( previous );
    061    }
    062  }