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 }