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Java > Open Source Codes > org > apache > activemq > util > ClassLoadingAwareObjectInputStream


1 /**
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one or more
4  * contributor license agreements. See the NOTICE file distributed with
5  * this work for additional information regarding copyright ownership.
6  * The ASF licenses this file to You under the Apache License, Version 2.0
7  * (the "License"); you may not use this file except in compliance with
8  * the License. You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 package org.apache.activemq.util;
19
20 import java.io.IOException JavaDoc;
21 import java.io.InputStream JavaDoc;
22 import java.io.ObjectInputStream JavaDoc;
23 import java.io.ObjectStreamClass JavaDoc;
24 import java.lang.reflect.Proxy JavaDoc;
25
26
27 public class ClassLoadingAwareObjectInputStream extends ObjectInputStream JavaDoc {
28     
29     private static final ClassLoader JavaDoc FALLBACK_CLASS_LOADER = ClassLoadingAwareObjectInputStream.class.getClassLoader();
30
31     public ClassLoadingAwareObjectInputStream(InputStream JavaDoc in) throws IOException JavaDoc {
32         super(in);
33     }
34
35     protected Class JavaDoc resolveClass(ObjectStreamClass JavaDoc classDesc) throws IOException JavaDoc, ClassNotFoundException JavaDoc {
36         ClassLoader JavaDoc cl = Thread.currentThread().getContextClassLoader();
37         return load(classDesc.getName(), cl);
38     }
39
40     protected Class JavaDoc resolveProxyClass(String JavaDoc[] interfaces) throws IOException JavaDoc, ClassNotFoundException JavaDoc {
41         ClassLoader JavaDoc cl = Thread.currentThread().getContextClassLoader();
42         Class JavaDoc[] cinterfaces = new Class JavaDoc[interfaces.length];
43         for (int i = 0; i < interfaces.length; i++)
44             cinterfaces[i] = load(interfaces[i], cl);
45
46         try {
47             return Proxy.getProxyClass(cinterfaces[0].getClassLoader(), cinterfaces);
48         } catch (IllegalArgumentException JavaDoc e) {
49             throw new ClassNotFoundException JavaDoc(null, e);
50         }
51     }
52
53     private Class JavaDoc load(String JavaDoc className, ClassLoader JavaDoc cl) throws ClassNotFoundException JavaDoc {
54         try {
55             return ClassLoading.loadClass(className, cl);
56         } catch ( ClassNotFoundException JavaDoc e ) {
57             return ClassLoading.loadClass(className, FALLBACK_CLASS_LOADER);
58         }
59     }
60
61 }
62
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