/*

 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package java.lang.instrument;

/*

 * Copyright 2003 Wily Technology, Inc.

 */

/**

 * This class serves as a parameter block to the <code>Instrumentation.redefineClasses</code> method.

 * Serves to bind the <code>Class</code> that needs redefining together with the new class file bytes.

 *

 * @see     java.lang.instrument.Instrumentation#redefineClasses

 * @since   1.5

 */

public final class ClassDefinition {

    /**

     *  The class to redefine

     */

    private final Class<?> mClass;

    /**

     *  The replacement class file bytes

     */

    private final byte[]   mClassFile;

    /**

     *  Creates a new <code>ClassDefinition</code> binding using the supplied

     *  class and class file bytes. Does not copy the supplied buffer, just captures a reference to it.

     *

     * @param theClass the <code>Class</code> that needs redefining

     * @param theClassFile the new class file bytes

     *

     * @throws java.lang.NullPointerException if the supplied class or array is <code>null</code>.

     */

    public

    ClassDefinition(    Class<?> theClass,

                        byte[]  theClassFile) {

        if (theClass == null || theClassFile == null) {

            throw new NullPointerException();

        }

        mClass      = theClass;

        mClassFile  = theClassFile;

    }

    /**

     * Returns the class.

     *

     * @return    the <code>Class</code> object referred to.

     */

    public Class<?>

    getDefinitionClass() {

        return mClass;

    }

    /**

     * Returns the array of bytes that contains the new class file.

     *

     * @return    the class file bytes.

     */

    public byte[]

    getDefinitionClassFile() {

        return mClassFile;

    }

}