| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.beanutils2.converters; |
| |
| |
| /** |
| * {@link org.apache.commons.beanutils2.Converter} implementation that handles conversion |
| * to and from <b>java.lang.Character</b> objects. |
| * <p> |
| * Can be configured to either return a <i>default value</i> or throw a |
| * {@code ConversionException} if a conversion error occurs. |
| * |
| * @since 1.3 |
| */ |
| public final class CharacterConverter extends AbstractConverter { |
| |
| /** |
| * Construct a <b>java.lang.Character</b> <i>Converter</i> that throws |
| * a {@code ConversionException} if an error occurs. |
| */ |
| public CharacterConverter() { |
| super(); |
| } |
| |
| /** |
| * Construct a <b>java.lang.Character</b> <i>Converter</i> that returns |
| * a default value if an error occurs. |
| * |
| * @param defaultValue The default value to be returned |
| * if the value to be converted is missing or an error |
| * occurs converting the value. |
| */ |
| public CharacterConverter(final Object defaultValue) { |
| super(defaultValue); |
| } |
| |
| /** |
| * Return the default type this {@code Converter} handles. |
| * |
| * @return The default type this {@code Converter} handles. |
| * @since 1.8.0 |
| */ |
| @Override |
| protected Class<?> getDefaultType() { |
| return Character.class; |
| } |
| |
| /** |
| * <p>Convert a java.lang.Class or object into a String.</p> |
| * |
| * @param value The input value to be converted |
| * @return the converted String value. |
| * @since 1.8.0 |
| */ |
| @Override |
| protected String convertToString(final Object value) { |
| final String strValue = value.toString(); |
| return strValue.length() == 0 ? "" : strValue.substring(0, 1); |
| } |
| |
| /** |
| * <p>Convert the input object into a java.lang.Character.</p> |
| * |
| * @param <T> Target type of the conversion. |
| * @param type Data type to which this value should be converted. |
| * @param value The input value to be converted. |
| * @return The converted value. |
| * @throws Exception if conversion cannot be performed successfully |
| * @since 1.8.0 |
| */ |
| @Override |
| protected <T> T convertToType(final Class<T> type, final Object value) throws Exception { |
| if (Character.class.equals(type) || Character.TYPE.equals(type)) { |
| return type.cast(Character.valueOf(value.toString().charAt(0))); |
| } |
| |
| throw conversionException(type, value); |
| } |
| |
| } |