/*

 * 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.

 *

 * 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.

 *

 */

/*

 * @test

 * @bug 4679556

 * @summary Tests for duplication of some kind instances

 * @author Sergey Malenkov, Mark Davidson, Philip Milne

 */

import java.beans.DefaultPersistenceDelegate;

import java.beans.Encoder;

import java.beans.Expression;

import java.beans.XMLEncoder;

/**

 * Demonstrates the archiver bug, where the XMLEncoder duplicates

 * the instance of class A because it is required as the target of

 * a factory method (to produce an instance of class C).

 * See the output in the file Test.xml for the results and note

 * the (invalid) forward reference to the instance of class C.

 *

 * TO FIX

 *

 * Move the first line of the XMLEncoder::mark(Statement method)

 * to the end of the method.

 * I.e. replace the mark() method in XMLEncoder with this:

 * <pre>private void mark(Statement stm) {

 *     Object[] args = stm.getArguments();

 *     for (int i = 0; i < args.length; i++) {

 *         Object arg = args[i];

 *         mark(arg, true);

 *     }

 *     mark(stm.getTarget(), false);

 * }</pre>

 *

 * VALID ARCHIVE (WITH FIX):

 * <pre>&lt;?xml version="1.0" encoding="UTF-8"?&gt;

 * <java version="1.4.0" class="java.beans.XMLDecoder">

 *  <object class="TestDuplicates$A">

 *   <void id="TestDuplicates$C0" method="createC"/>

 *   <void property="x">

 *    <void property="x">

 *     <object idref="TestDuplicates$C0"/>

 *    </void>

 *   </void>

 *  </object>

 * &lt;/java&gt;</pre>

 *

 * INVALID ARCHIVE (WITHOUT FIX):

 *  <object class="TestDuplicates$A">

 *   <void property="x">

 *    <void property="x">

 *     <void class="TestDuplicates$A">

 *      <void property="x">

 *       <void property="x">

 *        <object idref="TestDuplicates$C0"/>

 *       </void>

 *      </void>

 *      <void id="TestDuplicates$C0" method="createC"/>

 *     </void>

 *     <object idref="TestDuplicates$C0"/>

 *    </void>

 *   </void>

 *   <void id="TestDuplicates$C0" method="createC"/>

 *  </object>

 * &lt;/java&gt;</pre>

 */

public class Test4679556 extends AbstractTest {

    public static void main(String[] args) {

        new Test4679556().test(true);

    }

    protected Object getObject() {

        A a = new A();

        B b = (B) a.getX();

        b.setX(a.createC());

        return a;

    }

    protected Object getAnotherObject() {

        return new A();

    }

    protected void initialize(XMLEncoder encoder) {

        encoder.setExceptionListener(this);

        encoder.setPersistenceDelegate(C.class, new DefaultPersistenceDelegate() {

            protected Expression instantiate(Object oldInstance, Encoder out) {

                C c = (C) oldInstance;

                return new Expression(c, c.getX(), "createC", new Object[] {});

            }

        });

    }

    public static class Base {

        private Object x;

        public Object getX() {

            return this.x;

        }

        public void setX(Object x) {

            this.x = x;

        }

    }

    public static class A extends Base {

        public A() {

            setX(new B());

        }

        public C createC() {

            return new C(this);

        }

    }

    public static class B extends Base {

    }

    public static class C extends Base {

        private C(Object x) {

            setX(x);

        }

    }

}