001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.beanutils;
019
020import java.lang.reflect.InvocationTargetException;
021
022/**
023 * <p>Implementation of <code>DynaBean</code> that wraps a standard JavaBean
024 * instance, so that DynaBean APIs can be used to access its properties,
025 * though this implementation allows type conversion to occur when properties are set.
026 * This means that (say) Strings can be passed in as values in setter methods and
027 * this DynaBean will convert them to the correct primitive data types.</p>
028 *
029 * <p><strong>IMPLEMENTATION NOTE</strong> - This implementation does not
030 * support the <code>contains()</code> and <code>remove()</code> methods.</p>
031 *
032 * @version $Id$
033 */
034
035public class ConvertingWrapDynaBean extends WrapDynaBean {
036
037
038
039    /**
040     * Construct a new <code>DynaBean</code> associated with the specified
041     * JavaBean instance.
042     *
043     * @param instance JavaBean instance to be wrapped
044     */
045    public ConvertingWrapDynaBean(final Object instance) {
046
047        super(instance);
048
049    }
050
051
052    /**
053     * Set the value of the property with the specified name
054     * performing any type conversions if necessary. So this method
055     * can accept String values for primitive numeric data types for example.
056     *
057     * @param name Name of the property whose value is to be set
058     * @param value Value to which this property is to be set
059     *
060     * @throws IllegalArgumentException if there are any problems
061     *            copying the property.
062     */
063    @Override
064    public void set(final String name, final Object value) {
065
066        try {
067            BeanUtils.copyProperty(instance, name, value);
068        } catch (final InvocationTargetException ite) {
069            final Throwable cause = ite.getTargetException();
070            throw new IllegalArgumentException
071                    ("Error setting property '" + name +
072                              "' nested exception - " + cause);
073        } catch (final Throwable t) {
074            final IllegalArgumentException iae = new IllegalArgumentException
075                    ("Error setting property '" + name +
076                              "', exception - " + t);
077            BeanUtils.initCause(iae, t);
078            throw iae;
079        }
080
081    }
082}