001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.activemq.util; 018 019 import java.io.IOException; 020 import java.io.InputStream; 021 import java.io.ObjectInputStream; 022 import java.io.ObjectStreamClass; 023 import java.lang.reflect.Proxy; 024 import java.util.HashMap; 025 026 public class ClassLoadingAwareObjectInputStream extends ObjectInputStream { 027 028 private static final ClassLoader FALLBACK_CLASS_LOADER = ClassLoadingAwareObjectInputStream.class.getClassLoader(); 029 /** <p>Maps primitive type names to corresponding class objects.</p> */ 030 private static final HashMap<String, Class> primClasses = new HashMap<String, Class>(8, 1.0F); 031 public ClassLoadingAwareObjectInputStream(InputStream in) throws IOException { 032 super(in); 033 } 034 035 protected Class resolveClass(ObjectStreamClass classDesc) throws IOException, ClassNotFoundException { 036 ClassLoader cl = Thread.currentThread().getContextClassLoader(); 037 return load(classDesc.getName(), cl); 038 } 039 040 protected Class resolveProxyClass(String[] interfaces) throws IOException, ClassNotFoundException { 041 ClassLoader cl = Thread.currentThread().getContextClassLoader(); 042 Class[] cinterfaces = new Class[interfaces.length]; 043 for (int i = 0; i < interfaces.length; i++) { 044 cinterfaces[i] = load(interfaces[i], cl); 045 } 046 047 try { 048 return Proxy.getProxyClass(cinterfaces[0].getClassLoader(), cinterfaces); 049 } catch (IllegalArgumentException e) { 050 throw new ClassNotFoundException(null, e); 051 } 052 } 053 054 private Class load(String className, ClassLoader cl) 055 throws ClassNotFoundException { 056 try { 057 return Class.forName(className, false, cl); 058 } catch (ClassNotFoundException e) { 059 final Class clazz = (Class) primClasses.get(className); 060 if (clazz != null) { 061 return clazz; 062 } else { 063 return Class.forName(className, false, FALLBACK_CLASS_LOADER); 064 } 065 } 066 } 067 068 069 070 static { 071 primClasses.put("boolean", boolean.class); 072 primClasses.put("byte", byte.class); 073 primClasses.put("char", char.class); 074 primClasses.put("short", short.class); 075 primClasses.put("int", int.class); 076 primClasses.put("long", long.class); 077 primClasses.put("float", float.class); 078 primClasses.put("double", double.class); 079 primClasses.put("void", void.class); 080 } 081 082 }