001/* 002 * Copyright (c) 2016 Chris K Wensel <chris@wensel.net>. All Rights Reserved. 003 * Copyright (c) 2007-2017 Xplenty, Inc. All Rights Reserved. 004 * 005 * Project and contact information: http://www.cascading.org/ 006 * 007 * This file is part of the Cascading project. 008 * 009 * Licensed under the Apache License, Version 2.0 (the "License"); 010 * you may not use this file except in compliance with the License. 011 * You may obtain a copy of the License at 012 * 013 * http://www.apache.org/licenses/LICENSE-2.0 014 * 015 * Unless required by applicable law or agreed to in writing, software 016 * distributed under the License is distributed on an "AS IS" BASIS, 017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 018 * See the License for the specific language governing permissions and 019 * limitations under the License. 020 */ 021 022package cascading.flow.stream.duct; 023 024/** 025 * 026 */ 027public class CloseReducingDuct<Group, Incoming, Outgoing> extends Duct<Incoming, Outgoing> implements CloseWindow, Reducing<Group, Outgoing> 028 { 029 public CloseReducingDuct( Duct<Outgoing, ?> next ) 030 { 031 super( next ); 032 } 033 034 @Override 035 public void receive( Duct previous, int ordinal, Incoming incoming ) 036 { 037 // do nothing 038 } 039 040 @Override 041 public void startGroup( Duct previous, Group group ) 042 { 043 } 044 045 @Override 046 public void completeGroup( Duct previous, Outgoing outgoing ) 047 { 048 next.receive( previous, 0, outgoing ); 049 } 050 }