001/*
002 * Copyright 2002-2012 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.beans.propertyeditors;
018
019import java.beans.PropertyEditorSupport;
020import java.nio.charset.Charset;
021
022import org.springframework.util.StringUtils;
023
024/**
025 * Editor for {@code java.nio.charset.Charset}, translating charset
026 * String representations into Charset objects and back.
027 *
028 * <p>Expects the same syntax as Charset's {@link java.nio.charset.Charset#name()},
029 * e.g. {@code UTF-8}, {@code ISO-8859-16}, etc.
030 *
031 * @author Arjen Poutsma
032 * @since 2.5.4
033 * @see Charset
034 */
035public class CharsetEditor extends PropertyEditorSupport {
036
037        @Override
038        public void setAsText(String text) throws IllegalArgumentException {
039                if (StringUtils.hasText(text)) {
040                        setValue(Charset.forName(text));
041                }
042                else {
043                        setValue(null);
044                }
045        }
046
047        @Override
048        public String getAsText() {
049                Charset value = (Charset) getValue();
050                return (value != null ? value.name() : "");
051        }
052
053}