001/* 002 * Copyright (c) 2016 Chris K Wensel <chris@wensel.net>. 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 OrdinalDuct<Incoming, Outgoing> extends Duct<Incoming, Outgoing> 027 { 028 int ordinal = 0; 029 030 public OrdinalDuct( Duct next, int ordinal ) 031 { 032 super( next ); 033 this.ordinal = ordinal; 034 } 035 036 public void receive( Duct previous, int ordinal, Incoming incoming ) 037 { 038 // override ordinal value 039 next.receive( previous, this.ordinal, (Outgoing) incoming ); 040 } 041 042 @Override 043 public String toString() 044 { 045 final StringBuilder sb = new StringBuilder(); 046 sb.append( getClass().getSimpleName() ); 047 sb.append( "{ordinal=" ).append( ordinal ); 048 sb.append( "{next=" ).append( next ); 049 sb.append( '}' ); 050 return sb.toString(); 051 } 052 053 }