1 /*
2 * Copyright 2004-2009 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.springmodules.validation.util;
18
19 import java.util.HashMap;
20 import java.util.Map;
21
22 /**
23 * <p>Primitive class utilities.</p>
24 *
25 * <p><strong>Note</strong>: Derived from <code>org.springframework.util.ClassUtils</code>
26 * and ideally would be added to this class.</p>
27 *
28 * @author David Winterfeldt
29 */
30 public class PrimitiveClassUtils {
31
32 /**
33 * Map with primitive type name as key and corresponding object
34 * type as value, for example: "int" -> "Integer.class".
35 */
36 private static final Map<Class<?>, Class<?>> primitiveToObjectMap = new HashMap<Class<?>, Class<?>>(16);
37
38
39 static {
40 primitiveToObjectMap.put(boolean.class, Boolean.class);
41 primitiveToObjectMap.put(byte.class, Byte.class);
42 primitiveToObjectMap.put(char.class, Character.class);
43 primitiveToObjectMap.put(double.class, Double.class);
44 primitiveToObjectMap.put(float.class, Float.class);
45 primitiveToObjectMap.put(int.class, Integer.class);
46 primitiveToObjectMap.put(long.class, Long.class);
47 primitiveToObjectMap.put(short.class, Short.class);
48 }
49
50 /**
51 * Resolve the given primitive class name as primitive wrapper class, if appropriate,
52 * according to the JVM's naming rules for primitive classes.
53 *
54 * @param name The name of the potentially primitive class.
55 * @return Class The primitive wrapper class, or <code>null</code> if the name does not denote
56 * a primitive class or primitive array class
57 */
58 public static Class<?> resolvePrimitiveClassName(Class<?> primitiveClass) {
59 Class<?> result = null;
60
61 if (primitiveToObjectMap.containsKey(primitiveClass)) {
62 result = (Class<?>) primitiveToObjectMap.get(primitiveClass);
63 }
64
65 return result;
66 }
67
68 }