| /* |
| * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.xml.internal.bind.v2.runtime; |
| |
| import com.sun.xml.internal.bind.v2.model.nav.Navigator; |
| |
| import java.lang.reflect.Field; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Type; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * Utils class. |
| * |
| * WARNING: If you are doing any changes don't forget to change other Utils classes in different packages. |
| * |
| * Has *package private* access to avoid inappropriate usage. |
| */ |
| final class Utils { |
| |
| private static final Logger LOGGER = Logger.getLogger(Utils.class.getName()); |
| |
| /** |
| * static ReflectionNavigator field to avoid usage of reflection every time we use it. |
| */ |
| static final Navigator<Type, Class, Field, Method> REFLECTION_NAVIGATOR; |
| |
| static { // we statically initializing REFLECTION_NAVIGATOR property |
| try { |
| final Class refNav = Class.forName("com.sun.xml.internal.bind.v2.model.nav.ReflectionNavigator"); |
| |
| // requires accessClassInPackage privilege |
| final Method getInstance = AccessController.doPrivileged( |
| new PrivilegedAction<Method>() { |
| @Override |
| public Method run() { |
| try { |
| Method getInstance = refNav.getDeclaredMethod("getInstance"); |
| getInstance.setAccessible(true); |
| return getInstance; |
| } catch (NoSuchMethodException e) { |
| throw new IllegalStateException("ReflectionNavigator.getInstance can't be found"); |
| } |
| } |
| } |
| ); |
| |
| //noinspection unchecked |
| REFLECTION_NAVIGATOR = (Navigator<Type, Class, Field, Method>) getInstance.invoke(null); |
| } catch (ClassNotFoundException e) { |
| throw new IllegalStateException("Can't find ReflectionNavigator class"); |
| } catch (InvocationTargetException e) { |
| throw new IllegalStateException("ReflectionNavigator.getInstance throws the exception"); |
| } catch (IllegalAccessException e) { |
| throw new IllegalStateException("ReflectionNavigator.getInstance method is inaccessible"); |
| } catch (SecurityException e) { |
| LOGGER.log(Level.FINE, "Unable to access ReflectionNavigator.getInstance", e); |
| throw e; |
| } |
| } |
| |
| /** |
| * private constructor to avoid util class instantiating |
| */ |
| private Utils() { |
| } |
| } |