1 /*
   2  * Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.xml.internal.ws.policy.privateutil;
  27 
  28 import java.lang.reflect.InvocationTargetException;
  29 import java.lang.reflect.Method;
  30 import java.util.logging.Level;
  31 import java.util.logging.Logger;
  32 
  33 /**
  34  * Utility class to invoke sun.reflect.misc.MethodUtil.invoke() if available. If not (other then Oracle JDK) fallbacks
  35  * to java.lang,reflect.Method.invoke()
  36  */
  37 class MethodUtil {
  38 
  39     private static final Logger LOGGER = Logger.getLogger(MethodUtil.class.getName());
  40 
  41     static Object invoke(Object target, Method method, Object[] args) throws IllegalAccessException, InvocationTargetException {
  42         if (LOGGER.isLoggable(Level.FINE)) {
  43             LOGGER.log(Level.FINE, "Invoking method using sun.reflect.misc.MethodUtil");
  44         }
  45         try {
  46             return com.sun.xml.internal.ws.policy.util.MethodUtil.invoke(method, target, args);
  47         } catch (InvocationTargetException ite) {
  48             // unwrap invocation exception added by reflection code ...
  49             throw unwrapException(ite);
  50         }
  51     }
  52 
  53     private static InvocationTargetException unwrapException(InvocationTargetException ite) {
  54         Throwable targetException = ite.getTargetException();
  55         if (targetException != null && targetException instanceof InvocationTargetException) {
  56             if (LOGGER.isLoggable(Level.FINE)) {
  57                 LOGGER.log(Level.FINE, "Unwrapping invocation target exception");
  58             }
  59             return (InvocationTargetException) targetException;
  60         } else {
  61             return ite;
  62         }
  63     }
  64 
  65 }