    001    /*
    002     * Copyright (c) 2007-2014 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
    021    package cascading.tuple.coerce;
    022
    023    import java.lang.reflect.Type;
    024    import java.math.BigDecimal;
    025    import java.util.Map;
    026
    027    /**
    028     *
    029     */
    030    public 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      }