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.tuple.util;
022
023import cascading.tuple.Fields;
024import cascading.tuple.Tuple;
025import cascading.tuple.Tuples;
026
027/** This class is experimental and for internal use only. */
028public class TupleViews
029  {
030  public static Tuple createComposite( Tuple... tuples )
031    {
032    return Tuples.create( new CompositeTupleList( tuples ) );
033    }
034
035  public static Tuple createComposite( Fields... fields )
036    {
037    return Tuples.create( new CompositeTupleList( fields ) );
038    }
039
040  public static Tuple createComposite( Fields[] fields, Tuple[] tuples )
041    {
042    return Tuples.create( new CompositeTupleList( fields, tuples ) );
043    }
044
045  public static Tuple createNarrow( int[] basePos )
046    {
047    return Tuples.create( new NarrowTupleList( basePos ) );
048    }
049
050  public static Tuple createNarrow( int[] basePos, Tuple tuple )
051    {
052    return Tuples.create( new NarrowTupleList( basePos, tuple ) );
053    }
054
055  public static Tuple createOverride( Fields base, Fields override )
056    {
057    return Tuples.create( new OverrideTupleList( base, override ) );
058    }
059
060  public static Tuple createOverride( Fields base, Tuple baseTuple, Fields override, Tuple overrideTuple )
061    {
062    return Tuples.create( new OverrideTupleList( base, baseTuple, override, overrideTuple ) );
063    }
064
065  public static Tuple createOverride( int[] basePos, Tuple baseTuple, int[] overridePos, Tuple overrideTuple )
066    {
067    return Tuples.create( new OverrideTupleList( basePos, baseTuple, overridePos, overrideTuple ) );
068    }
069
070  public static Tuple createObjectArray()
071    {
072    return Tuples.create( new ObjectArrayList() );
073    }
074
075  public static Tuple createObjectArray( Object... values )
076    {
077    return Tuples.create( new ObjectArrayList( values ) );
078    }
079
080  public static <V> Tuple reset( Tuple tuple, V... values )
081    {
082    ( (Resettable<V>) Tuple.elements( tuple ) ).reset( values );
083
084    return tuple;
085    }
086  }