jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/ws/policy/privateutil/MethodUtil.java@e530533619ec

     1 /*

     2  * Copyright (c) 2013, 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  */

    26 package com.sun.xml.internal.ws.policy.privateutil;

    28 import java.lang.reflect.InvocationTargetException;

    29 import java.lang.reflect.Method;

    30 import java.util.logging.Level;

    31 import java.util.logging.Logger;

    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 {

    39     private static final Logger LOGGER = Logger.getLogger(MethodUtil.class.getName());

    40     private static final Method INVOKE_METHOD;

    42     static {

    43         Method method;

    44         try {

    45             Class<?> clazz = Class.forName("sun.reflect.misc.MethodUtil");

    46             method = clazz.getMethod("invoke", Method.class, Object.class, Object[].class);

    47             if (LOGGER.isLoggable(Level.FINE)) {

    48                 LOGGER.log(Level.FINE, "Class sun.reflect.misc.MethodUtil found; it will be used to invoke methods.");

    49             }

    50         } catch (Throwable t) {

    51             method = null;

    52             if (LOGGER.isLoggable(Level.FINE)) {

    53                 LOGGER.log(Level.FINE, "Class sun.reflect.misc.MethodUtil not found, probably non-Oracle JVM");

    54             }

    55         }

    56         INVOKE_METHOD = method;

    57     }

    59     static Object invoke(Object target, Method method, Object[] args) throws IllegalAccessException, InvocationTargetException {

    60         if (INVOKE_METHOD != null) {

    61             // sun.reflect.misc.MethodUtil.invoke(method, owner, args)

    62             if (LOGGER.isLoggable(Level.FINE)) {

    63                 LOGGER.log(Level.FINE, "Invoking method using sun.reflect.misc.MethodUtil");

    64             }

    65             try {

    66                 return INVOKE_METHOD.invoke(null, method, target, args);

    67             } catch (InvocationTargetException ite) {

    68                 // unwrap invocation exception added by reflection code ...

    69                 throw unwrapException(ite);

    70             }

    71         } else {

    72             // other then Oracle JDK ...

    73             if (LOGGER.isLoggable(Level.FINE)) {

    74                 LOGGER.log(Level.FINE, "Invoking method directly, probably non-Oracle JVM");

    75             }

    76             return method.invoke(target, args);

    77         }

    78     }

    80     private static InvocationTargetException unwrapException(InvocationTargetException ite) {

    81         Throwable targetException = ite.getTargetException();

    82         if (targetException != null && targetException instanceof InvocationTargetException) {

    83             if (LOGGER.isLoggable(Level.FINE)) {

    84                 LOGGER.log(Level.FINE, "Unwrapping invocation target exception");

    85             }

    86             return (InvocationTargetException) targetException;

    87         } else {

    88             return ite;

    89         }

    90     }

    92 }

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