    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
    018    package org.apache.commons.beanutils;
    019
    020    import 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     * @author James Strachan
    033     * @version $Revision: 640259 $ $Date: 2008-03-23 21:31:25 +0000 (Sun, 23 Mar 2008) $
    034     */
    035
    036    public class ConvertingWrapDynaBean extends WrapDynaBean {
    037
    038
    039
    040        /**
    041         * Construct a new <code>DynaBean</code> associated with the specified
    042         * JavaBean instance.
    043         *
    044         * @param instance JavaBean instance to be wrapped
    045         */
    046        public ConvertingWrapDynaBean(Object instance) {
    047
    048            super(instance);
    049
    050        }
    051
    052
    053        /**
    054         * Set the value of the property with the specified name
    055         * performing any type conversions if necessary. So this method
    056         * can accept String values for primitive numeric data types for example.
    057         *
    058         * @param name Name of the property whose value is to be set
    059         * @param value Value to which this property is to be set
    060         *
    061         * @exception IllegalArgumentException if there are any problems
    062         *            copying the property.
    063         */
    064        public void set(String name, Object value) {
    065
    066            try {
    067                BeanUtils.copyProperty(instance, name, value);
    068            } catch (InvocationTargetException ite) {
    069                Throwable cause = ite.getTargetException();
    070                throw new IllegalArgumentException
    071                        ("Error setting property '" + name +
    072                                  "' nested exception - " + cause);
    073            } catch (Throwable t) {
    074                IllegalArgumentException iae = new IllegalArgumentException
    075                        ("Error setting property '" + name +
    076                                  "', exception - " + t);
    077                BeanUtils.initCause(iae, t);
    078                throw iae;
    079            }
    080
    081        }
    082    }