com.sun.xml.bind.v2.runtime.property.Utils Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of ehcache Show documentation
Show all versions of ehcache Show documentation
Ehcache is an open source, standards-based cache used to boost performance,
offload the database and simplify scalability. Ehcache is robust, proven and full-featured and
this has made it the most widely-used Java-based cache.
The newest version!
/*
* Copyright (c) 2013, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.bind.v2.runtime.property;
import com.sun.xml.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 REFLECTION_NAVIGATOR;
static { // we statically initializing REFLECTION_NAVIGATOR property
try {
final Class refNav = Class.forName("com.sun.xml.bind.v2.model.nav.ReflectionNavigator");
// requires accessClassInPackage privilege
final Method getInstance = AccessController.doPrivileged(
new PrivilegedAction() {
@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) 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() {
}
}