    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.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  }