ObjectInputStreamWithLoader.java

/*
 * Copyright 1999-2006 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package com.sun.jmx.mbeanserver;

// Java import
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectStreamClass;
import java.io.StreamCorruptedException;

/**
 * This class deserializes an object in the context of a specific class loader.
 *
 * @since 1.5
 */
class ObjectInputStreamWithLoader extends ObjectInputStream {


    private ClassLoader loader;


    /**
     * @exception IOException Signals that an I/O exception of some
     * sort has occurred.
     * @exception StreamCorruptedException The object stream is corrupt.
     */
    public ObjectInputStreamWithLoader(InputStream in, ClassLoader theLoader)
            throws IOException {
        super(in);
        this.loader = theLoader;
    }

    protected Class resolveClass(ObjectStreamClass aClass)
            throws IOException, ClassNotFoundException {
        if (loader == null) {
            return super.resolveClass(aClass);
        } else {
            String name = aClass.getName();
            // Query the class loader ...
            return Class.forName(name, false, loader);
        }
    }
}