001/*
002 * Copyright (c) 2007-2017 Xplenty, 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.coerce;
022
023import java.lang.reflect.Type;
024import java.math.BigDecimal;
025import java.util.Map;
026
027/**
028 *
029 */
030public class BigDecimalCoerce extends Coercions.Coerce<BigDecimal>
031  {
032  protected BigDecimalCoerce( Map<Type, Coercions.Coerce> map )
033    {
034    super( map );
035    }
036
037  @Override
038  public Class<BigDecimal> getCanonicalType()
039    {
040    return BigDecimal.class;
041    }
042
043  @Override
044  public BigDecimal coerce( Object value )
045    {
046    if( value instanceof Double )
047      return BigDecimal.valueOf( (Double) value );
048    else if( value instanceof Long )
049      return BigDecimal.valueOf( (Long) value );
050    else if( value == null || value.toString().isEmpty() )
051      return null;
052    else
053      return new BigDecimal( value.toString() );
054    }
055  }