1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.beanutils;
19
20 import java.lang.reflect.InvocationTargetException;
21
22 /**
23 * <p>Implementation of <code>DynaBean</code> that wraps a standard JavaBean
24 * instance, so that DynaBean APIs can be used to access its properties,
25 * though this implementation allows type conversion to occur when properties are set.
26 * This means that (say) Strings can be passed in as values in setter methods and
27 * this DynaBean will convert them to the correct primitive data types.</p>
28 *
29 * <p><strong>IMPLEMENTATION NOTE</strong> - This implementation does not
30 * support the <code>contains()</code> and <code>remove()</code> methods.</p>
31 *
32 * @version $Id$
33 */
34
35 public class ConvertingWrapDynaBean extends WrapDynaBean {
36
37
38
39 /**
40 * Construct a new <code>DynaBean</code> associated with the specified
41 * JavaBean instance.
42 *
43 * @param instance JavaBean instance to be wrapped
44 */
45 public ConvertingWrapDynaBean(final Object instance) {
46
47 super(instance);
48
49 }
50
51
52 /**
53 * Set the value of the property with the specified name
54 * performing any type conversions if necessary. So this method
55 * can accept String values for primitive numeric data types for example.
56 *
57 * @param name Name of the property whose value is to be set
58 * @param value Value to which this property is to be set
59 *
60 * @throws IllegalArgumentException if there are any problems
61 * copying the property.
62 */
63 @Override
64 public void set(final String name, final Object value) {
65
66 try {
67 BeanUtils.copyProperty(instance, name, value);
68 } catch (final InvocationTargetException ite) {
69 final Throwable cause = ite.getTargetException();
70 throw new IllegalArgumentException
71 ("Error setting property '" + name +
72 "' nested exception - " + cause);
73 } catch (final Throwable t) {
74 final IllegalArgumentException iae = new IllegalArgumentException
75 ("Error setting property '" + name +
76 "', exception - " + t);
77 BeanUtils.initCause(iae, t);
78 throw iae;
79 }
80
81 }
82 }