    001/*
    002 * Copyright (c) 2007-2016 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.hadoop.util;
    022
    023import java.util.Collection;
    024
    025import cascading.tuple.Tuple;
    026import cascading.tuple.collect.Spillable;
    027
    028/**
    029 *
    030 */
    031public class LazySpillableTupleCollection extends LazyCollection implements Spillable
    032  {
    033  Spillable spillable;
    034
    035  public LazySpillableTupleCollection( Collection<Tuple> parent )
    036    {
    037    super( parent );
    038
    039    if( !( parent instanceof Spillable ) )
    040      throw new IllegalArgumentException( "parent is not a Spillable type: " + parent.getClass().getName() );
    041
    042    this.spillable = (Spillable) parent;
    043    }
    044
    045  @Override
    046  public void setGrouping( Tuple group )
    047    {
    048    spillable.setGrouping( group );
    049    }
    050
    051  @Override
    052  public Tuple getGrouping()
    053    {
    054    return spillable.getGrouping();
    055    }
    056
    057  @Override
    058  public void setSpillStrategy( SpillStrategy spillStrategy )
    059    {
    060    spillable.setSpillStrategy( spillStrategy );
    061    }
    062
    063  @Override
    064  public void setSpillListener( SpillListener spillListener )
    065    {
    066    spillable.setSpillListener( spillListener );
    067    }
    068
    069  @Override
    070  public int spillCount()
    071    {
    072    return spillable.spillCount();
    073    }
    074  }