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17 package org.apache.commons.beanutils;
18
19
20 /**
21 * <p>Implementation of <code>DynaBean</code> that wraps a standard JavaBean
22 * instance, so that DynaBean APIs can be used to access its properties,
23 * though this implementation allows type conversion to occur when properties are set.
24 * This means that (say) Strings can be passed in as values in setter methods and
25 * this DynaBean will convert them to the correct primitive data types.</p>
26 *
27 * <p><strong>IMPLEMENTATION NOTE</strong> - This implementation does not
28 * support the <code>contains()</code> and <code>remove()</code> methods.</p>
29 *
30 * @author James Strachan
31 * @version $Revision: 1.3 $ $Date: 2002/01/23 22:35:58 $
32 */
33
34 public class ConvertingWrapDynaBean extends WrapDynaBean {
35
36
37
38 /**
39 * Construct a new <code>DynaBean</code> associated with the specified
40 * JavaBean instance.
41 *
42 * @param instance JavaBean instance to be wrapped
43 */
44 public ConvertingWrapDynaBean(Object instance) {
45
46 super(instance);
47
48 }
49
50
51 /**
52 * Set the value of the property with the specified name
53 * performing any type conversions if necessary. So this method
54 * can accept String values for primitive numeric data types for example.
55 *
56 * @param name Name of the property whose value is to be set
57 * @param value Value to which this property is to be set
58 *
59 * @exception ConversionException if the specified value cannot be
60 * converted to the type required for this property
61 * @exception IllegalArgumentException if there is no property
62 * of the specified name
63 * @exception NullPointerException if an attempt is made to set a
64 * primitive property to null
65 */
66 public void set(String name, Object value) {
67
68 try {
69 BeanUtils.copyProperty(instance, name, value);
70 } catch (Throwable t) {
71 throw new IllegalArgumentException
72 ("Property '" + name + "' has no write method");
73 }
74
75 }
76 }