jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/tools/internal/xjc/model/nav/Utils.java@9c07ef4934dd

     1 /*

     2  * Copyright (c) 2013, 2014, 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.tools.internal.xjc.model.nav;

    28 import com.sun.xml.internal.bind.v2.model.nav.Navigator;

    30 import java.lang.reflect.Field;

    31 import java.lang.reflect.InvocationTargetException;

    32 import java.lang.reflect.Method;

    33 import java.lang.reflect.Type;

    34 import java.security.AccessController;

    35 import java.security.PrivilegedAction;

    36 import java.util.logging.Level;

    37 import java.util.logging.Logger;

    39 /**

    40  * Utils class.

    41  * Has *package private* access to avoid inappropriate usage.

    42  */

    43 final class Utils {

    45     private static final Logger LOGGER = Logger.getLogger(Utils.class.getName());

    47     /**

    48      * static ReflectionNavigator field to avoid usage of reflection every time we use it.

    49      */

    50     static final Navigator<Type, Class, Field, Method> REFLECTION_NAVIGATOR;

    52     static { // we statically initializing REFLECTION_NAVIGATOR property

    53         try {

    54             Class refNav = Class.forName("com.sun.xml.internal.bind.v2.model.nav.ReflectionNavigator");

    55             //noinspection unchecked

    56             final Method getInstance = refNav.getDeclaredMethod("getInstance");

    58             // requires accessClassInPackage privilege

    59             AccessController.doPrivileged(

    60                     new PrivilegedAction<Object>() {

    61                         @Override

    62                         public Object run() {

    63                             getInstance.setAccessible(true);

    64                             return null;

    65                         }

    66                     }

    67             );

    69             //noinspection unchecked

    70             REFLECTION_NAVIGATOR = (Navigator<Type, Class, Field, Method>) getInstance.invoke(null);

    71         } catch (ClassNotFoundException e) {

    72             e.printStackTrace();

    73             throw new IllegalStateException("Can't find ReflectionNavigator class");

    74         } catch (InvocationTargetException e) {

    75             e.printStackTrace();

    76             throw new IllegalStateException("ReflectionNavigator.getInstance throws the exception");

    77         } catch (NoSuchMethodException e) {

    78             e.printStackTrace();

    79             throw new IllegalStateException("ReflectionNavigator.getInstance can't be found");

    80         } catch (IllegalAccessException e) {

    81             e.printStackTrace();

    82             throw new IllegalStateException("ReflectionNavigator.getInstance method is inaccessible");

    83         } catch (SecurityException e) {

    84             LOGGER.log(Level.FINE, "Unable to access ReflectionNavigator.getInstance", e);

    85             throw e;

    86         }

    87     }

    89     /**

    90      * private constructor to avoid util class instantiating

    91      */

    92     private Utils() {

    93     }

    94 }

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