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    package org.apache.commons.beanutils.converters;
018    
019    import java.net.URL;
020    
021    /**
022     * {@link org.apache.commons.beanutils.Converter} implementaion that handles conversion
023     * to and from <b>java.net.URL</b> objects.
024     * <p>
025     * Can be configured to either return a <i>default value</i> or throw a
026     * <code>ConversionException</code> if a conversion error occurs.
027     *
028     * @version $Revision: 690380 $ $Date: 2008-08-29 21:04:38 +0100 (Fri, 29 Aug 2008) $
029     * @since 1.3
030     */
031    public final class URLConverter extends AbstractConverter {
032    
033        /**
034         * Construct a <b>java.net.URL</b> <i>Converter</i> that throws
035         * a <code>ConversionException</code> if an error occurs.
036         */
037        public URLConverter() {
038            super();
039        }
040    
041        /**
042         * Construct a <b>java.net.URL</b> <i>Converter</i> that returns
043         * a default value if an error occurs.
044         *
045         * @param defaultValue The default value to be returned
046         * if the value to be converted is missing or an error
047         * occurs converting the value.
048         */
049        public URLConverter(Object defaultValue) {
050            super(defaultValue);
051        }
052    
053        /**
054         * Return the default type this <code>Converter</code> handles.
055         *
056         * @return The default type this <code>Converter</code> handles.
057         * @since 1.8.0
058         */
059        protected Class getDefaultType() {
060            return URL.class;
061        }
062    
063        /**
064         * <p>Convert a java.net.URL or object into a String.</p>
065         *
066         * @param type Data type to which this value should be converted.
067         * @param value The input value to be converted.
068         * @return The converted value.
069         * @throws Throwable if an error occurs converting to the specified type
070         * @since 1.8.0
071         */
072        protected Object convertToType(Class type, Object value) throws Throwable {
073            return new URL(value.toString());
074        }
075    
076    }