jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/ws/client/sei/MethodUtil.java@9c07ef4934dd

     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.client.sei;

    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  * <p/>

    37  * Be careful, copy of this class exists in several packages, iny modification must be done to other copies too!

    38  */

    39 class MethodUtil {

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

    42     private static final Method INVOKE_METHOD;

    44     static {

    45         Method method;

    46         try {

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

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

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

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

    51             }

    52         } catch (Throwable t) {

    53             method = null;

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

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

    56             }

    57         }

    58         INVOKE_METHOD = method;

    59     }

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

    62         if (INVOKE_METHOD != null) {

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

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

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

    66             }

    67             try {

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

    69             } catch (InvocationTargetException ite) {

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

    71                 throw unwrapException(ite);

    72             }

    73         } else {

    74             // other then Oracle JDK ...

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

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

    77             }

    78             return method.invoke(target, args);

    79         }

    80     }

    82     private static InvocationTargetException unwrapException(InvocationTargetException ite) {

    83         Throwable targetException = ite.getTargetException();

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

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

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

    87             }

    88             return (InvocationTargetException) targetException;

    89         } else {

    90             return ite;

    91         }

    92     }

    94 }

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