001    /*
002     * Copyright (c) 2007-2014 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    
021    package cascading.flow.stream;
022    
023    /**
024     *
025     */
026    public 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      }