001
014
015 package com.liferay.portal.kernel.util;
016
017 import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayInputStream;
018 import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayOutputStream;
019 import com.liferay.portal.kernel.log.Log;
020 import com.liferay.portal.kernel.log.LogFactoryUtil;
021
022 import java.io.ObjectInputStream;
023 import java.io.ObjectOutputStream;
024
025 import java.lang.reflect.InvocationTargetException;
026 import java.lang.reflect.Method;
027
028 import java.util.ArrayList;
029 import java.util.List;
030
031
034 public class ClassLoaderProxy {
035
036 public ClassLoaderProxy(Object obj, ClassLoader classLoader) {
037 this(obj, obj.getClass().getName(), classLoader);
038 }
039
040 public ClassLoaderProxy(
041 Object obj, String className, ClassLoader classLoader) {
042
043 _obj = obj;
044 _className = className;
045 _classLoader = classLoader;
046 }
047
048 public ClassLoader getClassLoader() {
049 return _classLoader;
050 }
051
052 public String getClassName() {
053 return _className;
054 }
055
056 public Object invoke(MethodHandler methodHandler) throws Throwable {
057 Thread currentThread = Thread.currentThread();
058
059 ClassLoader contextClassLoader = currentThread.getContextClassLoader();
060
061 try {
062 currentThread.setContextClassLoader(_classLoader);
063
064 return _invoke(methodHandler);
065 }
066 catch (InvocationTargetException ite) {
067 throw translateThrowable(ite.getCause(), contextClassLoader);
068 }
069 catch (Throwable t) {
070 _log.error(t, t);
071
072 throw t;
073 }
074 finally {
075 currentThread.setContextClassLoader(contextClassLoader);
076 }
077 }
078
079
082 public Object invoke(String methodName, Object[] args) throws Throwable {
083 Thread currentThread = Thread.currentThread();
084
085 ClassLoader contextClassLoader = currentThread.getContextClassLoader();
086
087 try {
088 currentThread.setContextClassLoader(_classLoader);
089
090 Class<?> clazz = Class.forName(_className, true, _classLoader);
091
092 List<Class<?>> parameterTypes = new ArrayList<Class<?>>();
093
094 for (int i = 0; i < args.length; i++) {
095 Object arg = args[i];
096
097 Class<?> argClass = Class.forName(
098 arg.getClass().getName(), true, _classLoader);
099
100 if (ClassUtil.isSubclass(argClass, PrimitiveWrapper.class)) {
101 MethodKey methodKey = new MethodKey(
102 argClass.getName(), "getValue");
103
104 Method method = MethodCache.get(methodKey);
105
106 args[i] = method.invoke(arg, (Object[])null);
107
108 argClass = (Class<?>)argClass.getField("TYPE").get(arg);
109 }
110
111 if (ClassUtil.isSubclass(argClass, NullWrapper.class)) {
112 NullWrapper nullWrapper = (NullWrapper)arg;
113
114 argClass = Class.forName(
115 nullWrapper.getClassName(), true, _classLoader);
116
117 args[i] = null;
118 }
119
120 parameterTypes.add(argClass);
121 }
122
123 Method method = null;
124
125 try {
126 method = clazz.getMethod(
127 methodName,
128 parameterTypes.toArray(new Class[parameterTypes.size()]));
129 }
130 catch (NoSuchMethodException nsme) {
131 Method[] methods = ((Class<?>)clazz).getMethods();
132
133 for (int i = 0; i < methods.length; i++) {
134 Class<?>[] methodParameterTypes =
135 methods[i].getParameterTypes();
136
137 if (methods[i].getName().equals(methodName) &&
138 (methodParameterTypes.length ==
139 parameterTypes.size())) {
140
141 boolean correctParams = true;
142
143 for (int j = 0; j < parameterTypes.size(); j++) {
144 Class<?> a = parameterTypes.get(j);
145 Class<?> b = methodParameterTypes[j];
146
147 if (!ClassUtil.isSubclass(a, b)) {
148 correctParams = false;
149
150 break;
151 }
152 }
153
154 if (correctParams) {
155 method = methods[i];
156
157 break;
158 }
159 }
160 }
161
162 if (method == null) {
163 throw nsme;
164 }
165 }
166
167 return method.invoke(_obj, args);
168 }
169 catch (InvocationTargetException ite) {
170 throw translateThrowable(ite.getCause(), contextClassLoader);
171 }
172 catch (Throwable t) {
173 _log.error(t, t);
174
175 throw t;
176 }
177 finally {
178 currentThread.setContextClassLoader(contextClassLoader);
179 }
180 }
181
182 protected Throwable translateThrowable(
183 Throwable throwable, ClassLoader contextClassLoader) {
184
185 try {
186 UnsyncByteArrayOutputStream unsyncByteArrayOutputStream =
187 new UnsyncByteArrayOutputStream();
188 ObjectOutputStream objectOutputStream = new ObjectOutputStream(
189 unsyncByteArrayOutputStream);
190
191 objectOutputStream.writeObject(throwable);
192
193 objectOutputStream.flush();
194 objectOutputStream.close();
195
196 UnsyncByteArrayInputStream unsyncByteArrayInputStream =
197 new UnsyncByteArrayInputStream(
198 unsyncByteArrayOutputStream.unsafeGetByteArray(), 0,
199 unsyncByteArrayOutputStream.size());
200 ObjectInputStream objectInputStream =
201 new ClassLoaderObjectInputStream(
202 unsyncByteArrayInputStream, contextClassLoader);
203
204 throwable = (Throwable)objectInputStream.readObject();
205
206 objectInputStream.close();
207
208 return throwable;
209 }
210 catch (Throwable throwable2) {
211 _log.error(throwable2, throwable2);
212
213 return throwable2;
214 }
215 }
216
217 private Object _invoke(MethodHandler methodHandler) throws Exception {
218 try {
219 return methodHandler.invoke(_obj);
220 }
221 catch (NoSuchMethodException nsme) {
222 String name = methodHandler.getMethodName();
223 Class<?>[] parameterTypes = methodHandler.getArgumentsClasses();
224
225 Class<?> clazz = Class.forName(_className, true, _classLoader);
226
227 for (Method method : clazz.getMethods()) {
228 String curName = method.getName();
229 Class<?>[] curParameterTypes = method.getParameterTypes();
230
231 if (!curName.equals(name) ||
232 (curParameterTypes.length != parameterTypes.length)) {
233
234 continue;
235 }
236
237 boolean correctParams = true;
238
239 for (int j = 0; j < parameterTypes.length; j++) {
240 Class<?> a = parameterTypes[j];
241 Class<?> b = curParameterTypes[j];
242
243 if (!ClassUtil.isSubclass(a, b.getName())) {
244 correctParams = false;
245
246 break;
247 }
248 }
249
250 if (correctParams) {
251 return method.invoke(_obj, methodHandler.getArguments());
252 }
253 }
254
255 throw nsme;
256 }
257 }
258
259 private static Log _log = LogFactoryUtil.getLog(ClassLoaderProxy.class);
260
261 private ClassLoader _classLoader;
262 private String _className;
263 private Object _obj;
264
265 }