01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one
03: * or more contributor license agreements. See the NOTICE file
04: * distributed with this work for additional information
05: * regarding copyright ownership. The ASF licenses this file
06: * to you under the Apache License, Version 2.0 (the
07: * "License"); you may not use this file except in compliance
08: * with the License. You may obtain a copy of the License at
09: *
10: * http://www.apache.org/licenses/LICENSE-2.0
11: *
12: * Unless required by applicable law or agreed to in writing,
13: * software distributed under the License is distributed on an
14: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15: * KIND, either express or implied. See the License for the
16: * specific language governing permissions and limitations
17: * under the License.
18: *
19: */
20: package org.apache.mina.integration.beans;
21:
22: import java.beans.PropertyEditor;
23: import java.util.regex.Pattern;
24:
25: /**
26: * A {@link PropertyEditor} which converts a {@link String} into
27: * a {@link Character} and vice versa.
28: *
29: * @author The Apache MINA Project (dev@mina.apache.org)
30: * @version $Revision: 606107 $, $Date: 2007-12-20 23:01:28 -0700 (Thu, 20 Dec 2007) $
31: */
32: public class CharacterEditor extends AbstractPropertyEditor {
33: private static final Pattern UNICODE = Pattern
34: .compile("\\\\[uU][0-9a-fA-F]+");
35:
36: @Override
37: protected String toText(Object value) {
38: return String.valueOf(value);
39: }
40:
41: @Override
42: protected Object toValue(String text)
43: throws IllegalArgumentException {
44: if (text.length() == 0) {
45: return Character.valueOf(Character.MIN_VALUE);
46: }
47:
48: if (UNICODE.matcher(text).matches()) {
49: return Character.valueOf((char) Integer.parseInt(text
50: .substring(2)));
51: }
52:
53: if (text.length() != 1) {
54: throw new IllegalArgumentException("Too many characters: "
55: + text);
56: }
57:
58: return Character.valueOf(text.charAt(0));
59: }
60: }
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