StringConverter


1   /*
2    * Copyright 2001-2004 The Apache Software Foundation.
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  
17  
18  package org.apache.commons.beanutils.converters;
19  
20  
21  import org.apache.commons.beanutils.ConversionException;
22  import org.apache.commons.beanutils.Converter;
23  
24  
25  /**
26   * <p>Standard {@link Converter} implementation that converts an incoming
27   * String into a <code>java.lang.String</code> object, optionally using a
28   * default value or throwing a {@link ConversionException} if a conversion
29   * error occurs.</p>
30   *
31   * @author Craig R. McClanahan
32   * @version $Revision: 1.5 $ $Date: 2004/02/28 13:18:34 $
33   * @since 1.3
34   */
35  
36  public final class StringConverter implements Converter {
37  
38  
39      // --------------------------------------------------------- Public Methods
40  
41  
42      /**
43       * Convert the specified input object into an output object of the
44       * specified type.
45       *
46       * @param type Data type to which this value should be converted
47       * @param value The input value to be converted
48       *
49       * @exception ConversionException if conversion cannot be performed
50       *  successfully
51       */
52      public Object   convert(Class   type, Object   value) {
53  
54          if (value == null) {
55              return ((String  ) null);
56          } else {
57              return (value.toString());
58          }
59  
60      }
61  
62  
63  }
64
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