001/* 002 * Copyright (c) 2007-2015 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 }