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 package org.apache.commons.beanutils.converters; 18 19 import java.io.File; 20 21 /** 22 * {@link org.apache.commons.beanutils.Converter} implementaion that handles conversion 23 * to and from <b>java.io.File</b> objects. 24 * <p> 25 * Can be configured to either return a <i>default value</i> or throw a 26 * <code>ConversionException</code> if a conversion error occurs. 27 * 28 * @version $Id$ 29 * @since 1.6 30 */ 31 public final class FileConverter extends AbstractConverter { 32 33 /** 34 * Construct a <b>java.io.File</b> <i>Converter</i> that throws 35 * a <code>ConversionException</code> if an error occurs. 36 */ 37 public FileConverter() { 38 super(); 39 } 40 41 /** 42 * Construct a <b>java.io.File</b> <i>Converter</i> that returns 43 * a default value if an error occurs. 44 * 45 * @param defaultValue The default value to be returned 46 * if the value to be converted is missing or an error 47 * occurs converting the value. 48 */ 49 public FileConverter(final Object defaultValue) { 50 super(defaultValue); 51 } 52 53 /** 54 * Return the default type this <code>Converter</code> handles. 55 * 56 * @return The default type this <code>Converter</code> handles. 57 * @since 1.8.0 58 */ 59 @Override 60 protected Class<?> getDefaultType() { 61 return File.class; 62 } 63 64 /** 65 * <p>Convert the input object into a java.io.File.</p> 66 * 67 * @param <T> The target type of the conversion. 68 * @param type Data type to which this value should be converted. 69 * @param value The input value to be converted. 70 * @return The converted value. 71 * @throws Throwable if an error occurs converting to the specified type 72 * @since 1.8.0 73 */ 74 @Override 75 protected <T> T convertToType(final Class<T> type, final Object value) throws Throwable { 76 if (File.class.equals(type)) { 77 return type.cast(new File(value.toString())); 78 } 79 80 throw conversionException(type, value); 81 } 82 }