| /* |
| * Copyright (c) 2003, 2007, 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @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); |
| } |
| } |
| } |