Thu, 31 Aug 2017 15:18:52 +0800
merge
1 /*
2 * Copyright (c) 1997, 2012, 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.istack.internal.tools;
28 import java.util.Collection;
30 /**
31 * {@link ClassLoader} that masks a specified set of classes
32 * from its parent class loader.
33 *
34 * <p>
35 * This code is used to create an isolated environment.
36 *
37 * @author Kohsuke Kawaguchi
38 */
39 public class MaskingClassLoader extends ClassLoader {
41 private final String[] masks;
43 public MaskingClassLoader(String... masks) {
44 this.masks = masks;
45 }
47 public MaskingClassLoader(Collection<String> masks) {
48 this(masks.toArray(new String[masks.size()]));
49 }
51 public MaskingClassLoader(ClassLoader parent, String... masks) {
52 super(parent);
53 this.masks = masks;
54 }
56 public MaskingClassLoader(ClassLoader parent, Collection<String> masks) {
57 this(parent, masks.toArray(new String[masks.size()]));
58 }
60 @Override
61 protected synchronized Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
62 for (String mask : masks) {
63 if(name.startsWith(mask))
64 throw new ClassNotFoundException();
65 }
67 return super.loadClass(name, resolve);
68 }
69 }