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Contains the core Hudson code and view files to render HTML.

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/*******************************************************************************
 *
 * Copyright (c) 2004-2009, Oracle Corporation
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *
 *
 *
 *
 *******************************************************************************/ 

package hudson.util;

import java.util.Collection;

/**
 * {@link ClassLoader} that masks a specified set of classes from its parent
 * class loader.
 *
 *  This code is used to create an isolated environment.
 *
 * @author Kohsuke Kawaguchi
 */
public class MaskingClassLoader extends ClassLoader {

    /**
     * Prefix of the packages that should be hidden.
     */
    private final String[] masks;

    public MaskingClassLoader(ClassLoader parent, String... masks) {
        super(parent);
        this.masks = masks;
    }

    public MaskingClassLoader(ClassLoader parent, Collection masks) {
        this(parent, masks.toArray(new String[masks.size()]));
    }

    @Override
    protected synchronized Class loadClass(String name, boolean resolve) throws ClassNotFoundException {
        for (String mask : masks) {
            if (name.startsWith(mask)) {
                throw new ClassNotFoundException();
            }
        }

        return super.loadClass(name, resolve);
    }
}