    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
    024import java.util.Iterator;
    025
    026/**
    027 *
    028 */
    029public class OpenDuct<Incoming, Outgoing> extends Duct<Grouping<Incoming, Iterator<Incoming>>, Outgoing> implements OpenWindow
    030  {
    031  public OpenDuct( Duct<Outgoing, ?> next )
    032    {
    033    super( next );
    034    }
    035
    036  @Override
    037  public void start( Duct previous )
    038    {
    039    next.start( previous );
    040    }
    041
    042  @Override
    043  public void receive( Duct previous, int ordinal, Grouping<Incoming, Iterator<Incoming>> grouping )
    044    {
    045    while( grouping.joinIterator.hasNext() )
    046      next.receive( previous, 0, (Outgoing) grouping.joinIterator.next() );
    047    }
    048
    049  @Override
    050  public void complete( Duct previous )
    051    {
    052    next.complete( previous );
    053    }
    054  }