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 */ 017package org.apache.activemq.util; 018 019import java.io.IOException; 020import java.io.InputStream; 021import java.io.ObjectInputStream; 022import java.io.ObjectStreamClass; 023import java.lang.reflect.Proxy; 024import java.util.HashMap; 025 026@SuppressWarnings("rawtypes") 027public class ClassLoadingAwareObjectInputStream extends ObjectInputStream { 028 029 private static final ClassLoader FALLBACK_CLASS_LOADER = 030 ClassLoadingAwareObjectInputStream.class.getClassLoader(); 031 032 /** 033 * Maps primitive type names to corresponding class objects. 034 */ 035 private static final HashMap<String, Class> primClasses = new HashMap<String, Class>(8, 1.0F); 036 037 public ClassLoadingAwareObjectInputStream(InputStream in) throws IOException { 038 super(in); 039 } 040 041 protected Class<?> resolveClass(ObjectStreamClass classDesc) throws IOException, ClassNotFoundException { 042 ClassLoader cl = Thread.currentThread().getContextClassLoader(); 043 return load(classDesc.getName(), cl); 044 } 045 046 protected Class<?> resolveProxyClass(String[] interfaces) throws IOException, ClassNotFoundException { 047 ClassLoader cl = Thread.currentThread().getContextClassLoader(); 048 Class[] cinterfaces = new Class[interfaces.length]; 049 for (int i = 0; i < interfaces.length; i++) { 050 cinterfaces[i] = load(interfaces[i], cl); 051 } 052 053 try { 054 return Proxy.getProxyClass(cl, cinterfaces); 055 } catch (IllegalArgumentException e) { 056 try { 057 return Proxy.getProxyClass(FALLBACK_CLASS_LOADER, cinterfaces); 058 } catch (IllegalArgumentException e1) { 059 } 060 061 throw new ClassNotFoundException(null, e); 062 } 063 } 064 065 private Class<?> load(String className, ClassLoader cl) throws ClassNotFoundException { 066 try { 067 return Class.forName(className, false, cl); 068 } catch (ClassNotFoundException e) { 069 final Class<?> clazz = (Class<?>) primClasses.get(className); 070 if (clazz != null) { 071 return clazz; 072 } else { 073 return Class.forName(className, false, FALLBACK_CLASS_LOADER); 074 } 075 } 076 } 077 078 static { 079 primClasses.put("boolean", boolean.class); 080 primClasses.put("byte", byte.class); 081 primClasses.put("char", char.class); 082 primClasses.put("short", short.class); 083 primClasses.put("int", int.class); 084 primClasses.put("long", long.class); 085 primClasses.put("float", float.class); 086 primClasses.put("double", double.class); 087 primClasses.put("void", void.class); 088 } 089}