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/*
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* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.istack.internal.tools;
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import java.util.Collection;
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/**
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* {@link ClassLoader} that masks a specified set of classes
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* from its parent class loader.
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*
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* <p>
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* This code is used to create an isolated environment.
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*
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* @author Kohsuke Kawaguchi
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*/
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public class MaskingClassLoader extends ClassLoader {
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private final String[] masks;
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public MaskingClassLoader(String... masks) {
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this.masks = masks;
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}
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public MaskingClassLoader(Collection<String> masks) {
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this(masks.toArray(new String[masks.size()]));
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}
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public MaskingClassLoader(ClassLoader parent, String... masks) {
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super(parent);
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this.masks = masks;
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}
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public MaskingClassLoader(ClassLoader parent, Collection<String> masks) {
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this(parent, masks.toArray(new String[masks.size()]));
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}
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@Override
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protected synchronized Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
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for (String mask : masks) {
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if(name.startsWith(mask))
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throw new ClassNotFoundException();
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}
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return super.loadClass(name, resolve);
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}
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}
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