Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ResolvingObjectInputStream |
|
| 1.0;1 |
1 | // Copyright 2004, 2005 The Apache Software Foundation | |
2 | // | |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | // you may not use this file except in compliance with the License. | |
5 | // You may obtain a copy of the License at | |
6 | // | |
7 | // http://www.apache.org/licenses/LICENSE-2.0 | |
8 | // | |
9 | // Unless required by applicable law or agreed to in writing, software | |
10 | // distributed under the License is distributed on an "AS IS" BASIS, | |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | // See the License for the specific language governing permissions and | |
13 | // limitations under the License. | |
14 | ||
15 | package org.apache.tapestry.util.io; | |
16 | ||
17 | import java.io.IOException; | |
18 | import java.io.InputStream; | |
19 | import java.io.ObjectInputStream; | |
20 | import java.io.ObjectStreamClass; | |
21 | ||
22 | import org.apache.hivemind.ClassResolver; | |
23 | import org.apache.hivemind.util.Defense; | |
24 | ||
25 | /** | |
26 | * Specialized subclass of {@link java.io.ObjectInputStream}that knows how to | |
27 | * resolve classes with a non-default class loader (represented by an instance | |
28 | * of {@link org.apache.hivemind.ClassResolver}). | |
29 | * | |
30 | * @author Howard Lewis Ship | |
31 | * @since 3.0 | |
32 | */ | |
33 | ||
34 | public class ResolvingObjectInputStream extends ObjectInputStream | |
35 | { | |
36 | ||
37 | private ClassResolver _resolver; | |
38 | ||
39 | public ResolvingObjectInputStream(ClassResolver resolver, InputStream input) | |
40 | throws IOException | |
41 | { | |
42 | 0 | super(input); |
43 | ||
44 | 0 | Defense.notNull(resolver, "resolver"); |
45 | ||
46 | 0 | _resolver = resolver; |
47 | 0 | } |
48 | ||
49 | /** | |
50 | * Overrides the default implementation to have the resource resolver find | |
51 | * the class. | |
52 | */ | |
53 | ||
54 | protected Class resolveClass(ObjectStreamClass v) | |
55 | throws IOException, ClassNotFoundException | |
56 | { | |
57 | 0 | return _resolver.findClass(v.getName()); |
58 | } | |
59 | } |