TextToNumber


1   /*
2    * Copyright 2002-2006 the original author or authors.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    * 
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    * 
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.springframework.binding.convert.support;
17  
18  import java.math.BigDecimal  ;
19  import java.math.BigInteger  ;
20  
21  import org.springframework.binding.convert.ConversionContext;
22  import org.springframework.binding.format.FormatterFactory;
23  import org.springframework.binding.format.support.SimpleFormatterFactory;
24  
25  /**
26   * Converts textual representations of numbers to a <code>Number</code>
27   * specialization. Delegates to a synchronized formatter to parse text strings.
28   * @author Keith Donald
29   */
30  public class TextToNumber extends AbstractFormattingConverter {
31  
32      public TextToNumber() {
33          super(new SimpleFormatterFactory());
34      }
35  
36      public TextToNumber(FormatterFactory formatterFactory) {
37          super(formatterFactory);
38      }
39  
40      public Class  [] getSourceClasses() {
41          return new Class  [] { String  .class };
42      }
43  
44      public Class  [] getTargetClasses() {
45          return new Class  [] { Integer  .class, Short  .class, Byte  .class, Long  .class, Float  .class, Double  .class,
46                  BigInteger  .class, BigDecimal  .class };
47      }
48  
49      protected Object   doConvert(Object   source, Class   targetClass, ConversionContext context) throws Exception   {
50          return getFormatterFactory().getNumberFormatter(targetClass).parseValue((String  )source, targetClass);
51      }
52  }
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