1 /**
2 * Copyright 2009-2015 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.apache.ibatis.reflection;
17
18 import java.lang.reflect.InvocationTargetException;
19 import java.lang.reflect.UndeclaredThrowableException;
20
21 /**
22 * @author Clinton Begin
23 */
24 public class ExceptionUtil {
25
26 private ExceptionUtil() {
27 // Prevent Instantiation
28 }
29
30 public static Throwable unwrapThrowable(Throwable wrapped) {
31 Throwable unwrapped = wrapped;
32 while (true) {
33 if (unwrapped instanceof InvocationTargetException) {
34 unwrapped = ((InvocationTargetException) unwrapped).getTargetException();
35 } else if (unwrapped instanceof UndeclaredThrowableException) {
36 unwrapped = ((UndeclaredThrowableException) unwrapped).getUndeclaredThrowable();
37 } else {
38 return unwrapped;
39 }
40 }
41 }
42
43 }