Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
DefaultClassResolver |
|
| 2.5;2.5 |
1 | package org.apache.commons.ognl; | |
2 | ||
3 | /* | |
4 | * Licensed to the Apache Software Foundation (ASF) under one | |
5 | * or more contributor license agreements. See the NOTICE file | |
6 | * distributed with this work for additional information | |
7 | * regarding copyright ownership. The ASF licenses this file | |
8 | * to you under the Apache License, Version 2.0 (the | |
9 | * "License"); you may not use this file except in compliance | |
10 | * with the License. You may obtain a copy of the License at | |
11 | * | |
12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
13 | * | |
14 | * Unless required by applicable law or agreed to in writing, | |
15 | * software distributed under the License is distributed on an | |
16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
17 | * KIND, either express or implied. See the License for the | |
18 | * specific language governing permissions and limitations | |
19 | * under the License. | |
20 | */ | |
21 | ||
22 | import java.util.HashMap; | |
23 | import java.util.Map; | |
24 | ||
25 | /** | |
26 | * Default class resolution. Uses ClassLoader.loadClass() to look up classes by name. It also looks in the "java.lang" | |
27 | * package | |
28 | * if the class named does not give a package specifier, allowing easier usage of these classes. | |
29 | * | |
30 | * @author Luke Blanshard (blanshlu@netscape.net) | |
31 | * @author Drew Davidson (drew@ognl.org) | |
32 | */ | |
33 | 1 | public class DefaultClassResolver |
34 | implements ClassResolver | |
35 | { | |
36 | 1 | private final Map<String, Class<?>> classes = new HashMap<String, Class<?>>( 101 ); |
37 | ||
38 | /** | |
39 | * Resolves a class for a given className | |
40 | * | |
41 | * @param className The name of the Class | |
42 | * @return The resulting Class object | |
43 | * @throws ClassNotFoundException If the class could not be found | |
44 | */ | |
45 | public Class<?> classForName( String className ) | |
46 | throws ClassNotFoundException | |
47 | { | |
48 | 0 | return classForName( className, null ); |
49 | } | |
50 | ||
51 | /** | |
52 | * {@inheritDoc} | |
53 | */ | |
54 | public Class<?> classForName( String className, Map<String, Object> unused ) | |
55 | throws ClassNotFoundException | |
56 | { | |
57 | 348 | Class<?> result = classes.get( className ); |
58 | ||
59 | 348 | if ( result == null ) |
60 | { | |
61 | 49 | ClassLoader classLoader = ClassLoader.getSystemClassLoader(); |
62 | try | |
63 | { | |
64 | 49 | result = classLoader.loadClass( className ); |
65 | } | |
66 | 9 | catch ( ClassNotFoundException ex ) |
67 | { | |
68 | 9 | if ( className.indexOf( '.' ) == -1 ) |
69 | { | |
70 | 8 | result = classLoader.loadClass( "java.lang." + className ); |
71 | 8 | classes.put( "java.lang." + className, result ); |
72 | } | |
73 | 40 | } |
74 | 49 | classes.put( className, result ); |
75 | } | |
76 | 348 | return result; |
77 | } | |
78 | } |