    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  }