001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020package org.apache.mina.integration.beans; 021 022import java.beans.PropertyEditor; 023import java.util.regex.Pattern; 024 025/** 026 * A {@link PropertyEditor} which converts a {@link String} into 027 * a {@link Character} and vice versa. 028 * 029 * @author <a href="http://mina.apache.org">Apache MINA Project</a> 030 */ 031public class CharacterEditor extends AbstractPropertyEditor { 032 private static final Pattern UNICODE = Pattern.compile("\\\\[uU][0-9a-fA-F]+"); 033 034 @Override 035 protected String toText(Object value) { 036 return String.valueOf(value); 037 } 038 039 @Override 040 protected Object toValue(String text) throws IllegalArgumentException { 041 if (text.length() == 0) { 042 return Character.valueOf(Character.MIN_VALUE); 043 } 044 045 if (UNICODE.matcher(text).matches()) { 046 return Character.valueOf((char) Integer.parseInt(text.substring(2))); 047 } 048 049 if (text.length() != 1) { 050 throw new IllegalArgumentException("Too many characters: " + text); 051 } 052 053 return Character.valueOf(text.charAt(0)); 054 } 055}