    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      }