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Commons Beanutils example source code file (StringConverter.java)
The Commons Beanutils StringConverter.java source code/* * 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.beanutils.converters; /** * {@link org.apache.commons.beanutils.Converter} * implementation that converts an incoming * object into a <code>java.lang.String object. * <p> * Note that ConvertUtils really is designed to do string->object conversions, * and offers very little support for object->string conversions. The * ConvertUtils/ConvertUtilsBean methods only select a converter to apply * based upon the target type being converted to, and generally assume that * the input is a string (by calling its toString method if needed). * <p> * This class is therefore just a dummy converter that converts its input * into a string by calling the input object's toString method and returning * that value. * <p> * It is possible to replace this converter with something that has a big * if/else statement that selects behaviour based on the real type of the * object being converted (or possibly has a map of converters, and looks * them up based on the class of the input object). However this is not part * of the existing ConvertUtils framework. * * * @author Craig R. McClanahan * @version $Revision: 690380 $ $Date: 2008-08-29 21:04:38 +0100 (Fri, 29 Aug 2008) $ * @since 1.3 */ public final class StringConverter extends AbstractConverter { /** * Construct a <b>java.lang.String Converter that throws * a <code>ConversionException if an error occurs. */ public StringConverter() { super(); } /** * Construct a <b>java.lang.String Converter 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 StringConverter(Object defaultValue) { super(defaultValue); } /** * Return the default type this <code>Converter handles. * * @return The default type this <code>Converter handles. * @since 1.8.0 */ protected Class getDefaultType() { return String.class; } /** * Convert the specified input object into an output object of the * specified type. * * @param type Data type to which this value should be converted. * @param value The input value to be converted. * @return The converted value. * @throws Throwable if an error occurs converting to the specified type * @since 1.8.0 */ protected Object convertToType(Class type, Object value) throws Throwable { return value.toString(); } } Other Commons Beanutils examples (source code examples)Here is a short list of links related to this Commons Beanutils StringConverter.java source code file: |
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