001/*
002 * Copyright (c) 2007-2015 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  }