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.EnumSet;
24: import java.util.Set;
25: import java.util.regex.Pattern;
26:
27: /**
28: * A {@link PropertyEditor} which converts a {@link String} into
29: * an {@link Enum} and vice versa.
30: *
31: * @author The Apache MINA Project (dev@mina.apache.org)
32: * @version $Revision: 601229 $, $Date: 2007-12-05 00:13:18 -0700 (Wed, 05 Dec 2007) $
33: */
34: @SuppressWarnings("unchecked")
35: public class EnumEditor extends AbstractPropertyEditor {
36: private static final Pattern ORDINAL = Pattern.compile("[0-9]+");
37:
38: private final Class enumType;
39: private final Set<Enum> enums;
40:
41: public EnumEditor(Class enumType) {
42: if (enumType == null) {
43: throw new NullPointerException("enumType");
44: }
45:
46: this .enumType = enumType;
47: this .enums = EnumSet.allOf(enumType);
48: }
49:
50: @Override
51: protected String toText(Object value) {
52: return value.toString();
53: }
54:
55: @Override
56: protected Object toValue(String text)
57: throws IllegalArgumentException {
58: if (ORDINAL.matcher(text).matches()) {
59: int ordinal = Integer.parseInt(text);
60: for (Enum e : enums) {
61: if (e.ordinal() == ordinal) {
62: return e;
63: }
64: }
65:
66: throw new IllegalArgumentException("wrong ordinal: "
67: + ordinal);
68: }
69:
70: for (Enum e : enums) {
71: if (text.equalsIgnoreCase(e.toString())) {
72: return e;
73: }
74: }
75:
76: return Enum.valueOf(enumType, text);
77: }
78: }
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