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  */

    25 

    26 package com.sun.xml.internal.ws.spi.db;

    27 

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

    29 

    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.util.logging.Level;

    35 import java.util.logging.Logger;

    36 

    37 /**

    38  * Utils class.

    39  *

    40  * WARNING: If you are doing any changes don't forget to change other Utils classes in different packages.

    41  *

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

    43  */

    44 /* package */ final class Utils {

    45 

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

    47 

    48     /**

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

    50      */

    51     /* package */ static final Navigator<Type, Class, Field, Method> REFLECTION_NAVIGATOR;

    52 

    53     static { // we statically initializing REFLECTION_NAVIGATOR property

    54         Class refNav = null;

    55         try {

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

    57             //noinspection unchecked

    58             Method getInstance = refNav.getDeclaredMethod("getInstance");

    59             getInstance.setAccessible(true);

    60             //noinspection unchecked

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

    62         } catch (ClassNotFoundException e) {

    63             e.printStackTrace();

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

    65         } catch (InvocationTargetException e) {

    66             e.printStackTrace();

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

    68         } catch (NoSuchMethodException e) {

    69             e.printStackTrace();

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

    71         } catch (IllegalAccessException e) {

    72             e.printStackTrace();

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

    74         } catch (SecurityException e) {

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

    76             throw e;

    77         }

    78     }

    79 

    80     /**

    81      * private constructor to avoid util class instantiating

    82      */

    83     private Utils() {

    84     }

    85 }