/*

 * Copyright 2003-2007 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.

 *

 * 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.

 */

/*

 * @test

 * @bug 4508780

 * @summary Tests shared access to the Introspector cache

 * @author Mark Davidson

 */

import java.beans.IntrospectionException;

import java.beans.Introspector;

import java.beans.PropertyDescriptor;

import java.lang.reflect.Method;

/**

 * Multiple classloader test to ensure that methods

 * returned by the BeanInfo classes are unique to the classloader.

 */

public class Test4508780 implements Runnable {

    /**

     * This is here to force the bean classes to be compiled

     */

    private static final Class[] COMPILE = {

            Bean.class,

            Bean2.class,

            Bean3.class,

            Bean4.class,

    };

    public static void main(String[] args) {

        for (int i = 0; i < 10; i++) test();

    }

    private static void test() {

        test("Bean", "Bean2", "Bean3", "Bean4");

        test("Bean4", "Bean", "Bean2", "Bean3");

        test("Bean3", "Bean4", "Bean", "Bean2");

        test("Bean2", "Bean3", "Bean4", "Bean");

        Introspector.flushCaches();

    }

    private static void test(String... names) {

        new Thread(new Test4508780(names)).start();

    }

    private final ClassLoader loader = new SimpleClassLoader();

    private final String[] names;

    private Test4508780(String... names) {

        this.names = names;

    }

    public void run() {

        for (String name : this.names) {

            Object bean;

            try {

                bean = this.loader.loadClass(name).newInstance();

            } catch (Exception exception) {

                throw new Error("could not instantiate bean: " + name, exception);

            }

            if (this.loader != bean.getClass().getClassLoader()) {

                throw new Error("bean class loader is not equal to default one");

            }

            PropertyDescriptor[] pds = getPropertyDescriptors(bean);

            for (PropertyDescriptor pd : pds) {

                Class type = pd.getPropertyType();

                Method setter = pd.getWriteMethod();

                Method getter = pd.getReadMethod();

                if (type.equals(String.class)) {

                    executeMethod(setter, bean, "Foo");

                } else if (type.equals(int.class)) {

                    executeMethod(setter, bean, Integer.valueOf(1));

                }

                executeMethod(getter, bean);

            }

        }

    }

    private static void executeMethod(Method method, Object bean, Object... args) {

        if (method == null) {

            throw new Error("method is null");

        }

        if (bean == null) {

            throw new Error("target bean is null");

        }

        try {

            method.invoke(bean, args);

        } catch (Exception exception) {

            throw new Error("could not execute method: " + method, exception);

        }

    }

    private static PropertyDescriptor[] getPropertyDescriptors(Object object) {

        Class type = object.getClass();

        synchronized (System.out) {

            System.out.println(type);

            ClassLoader loader = type.getClassLoader();

            while (loader != null) {

                System.out.println(" - loader: " + loader);

                loader = loader.getParent();

            }

        }

        try {

            return Introspector.getBeanInfo(type).getPropertyDescriptors();

        } catch (IntrospectionException exception) {

            throw new Error("unexpected exception", exception);

        }

    }

}