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/jboss-as-7.1.1.Final/jpa/core/src/main/java/org/jboss/as/jpa/persistenceprovider/SecurityActions.java

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Java | 69 lines | 30 code | 7 blank | 32 comment | 6 complexity | 250b3988f2b8d00f704f840e18a26228 MD5 | raw file
Possible License(s): LGPL-2.1, Apache-2.0
 1/*
 2 * JBoss, Home of Professional Open Source.
 3 * Copyright 2012, Red Hat, Inc., and individual contributors
 4 * as indicated by the @author tags. See the copyright.txt file in the
 5 * distribution for a full listing of individual contributors.
 6 *
 7 * This is free software; you can redistribute it and/or modify it
 8 * under the terms of the GNU Lesser General Public License as
 9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22
23package org.jboss.as.jpa.persistenceprovider;
24
25import java.security.AccessController;
26import java.security.PrivilegedAction;
27
28final class SecurityActions {
29
30    private SecurityActions() {
31        // forbidden inheritance
32    }
33
34    /**
35     * Gets context classloader.
36     *
37     * @return the current context classloader
38     */
39    static ClassLoader getContextClassLoader() {
40        if (System.getSecurityManager() == null) {
41            return Thread.currentThread().getContextClassLoader();
42        } else {
43            return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {
44                public ClassLoader run() {
45                    return Thread.currentThread().getContextClassLoader();
46                }
47            });
48        }
49    }
50
51    /**
52     * Sets context classloader.
53     *
54     * @param classLoader the classloader
55     */
56    static void setContextClassLoader(final ClassLoader classLoader) {
57        if (System.getSecurityManager() == null) {
58            Thread.currentThread().setContextClassLoader(classLoader);
59        } else {
60            AccessController.doPrivileged(new PrivilegedAction<Object>() {
61                public Object run() {
62                    Thread.currentThread().setContextClassLoader(classLoader);
63                    return null;
64                }
65            });
66        }
67    }
68
69}