133 lines
4.4 KiB
Java
133 lines
4.4 KiB
Java
/*
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* Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4508780
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* @summary Tests shared access to the Introspector cache
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* @author Mark Davidson
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*/
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import java.beans.IntrospectionException;
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import java.beans.Introspector;
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import java.beans.PropertyDescriptor;
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import java.lang.reflect.Method;
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/**
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* Multiple classloader test to ensure that methods
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* returned by the BeanInfo classes are unique to the classloader.
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*/
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public class Test4508780 implements Runnable {
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/**
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* This is here to force the bean classes to be compiled
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*/
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private static final Class[] COMPILE = {
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Bean.class,
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Bean2.class,
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Bean3.class,
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Bean4.class,
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};
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public static void main(String[] args) {
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for (int i = 0; i < 10; i++) test();
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}
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private static void test() {
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test("Bean", "Bean2", "Bean3", "Bean4");
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test("Bean4", "Bean", "Bean2", "Bean3");
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test("Bean3", "Bean4", "Bean", "Bean2");
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test("Bean2", "Bean3", "Bean4", "Bean");
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Introspector.flushCaches();
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}
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private static void test(String... names) {
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new Thread(new Test4508780(names)).start();
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}
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private final ClassLoader loader = new SimpleClassLoader();
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private final String[] names;
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private Test4508780(String... names) {
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this.names = names;
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}
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public void run() {
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for (String name : this.names) {
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Object bean;
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try {
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bean = this.loader.loadClass(name).newInstance();
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} catch (Exception exception) {
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throw new Error("could not instantiate bean: " + name, exception);
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}
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if (this.loader != bean.getClass().getClassLoader()) {
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throw new Error("bean class loader is not equal to default one");
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}
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PropertyDescriptor[] pds = getPropertyDescriptors(bean);
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for (PropertyDescriptor pd : pds) {
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Class type = pd.getPropertyType();
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Method setter = pd.getWriteMethod();
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Method getter = pd.getReadMethod();
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if (type.equals(String.class)) {
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executeMethod(setter, bean, "Foo");
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} else if (type.equals(int.class)) {
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executeMethod(setter, bean, Integer.valueOf(1));
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}
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executeMethod(getter, bean);
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}
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}
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}
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private static void executeMethod(Method method, Object bean, Object... args) {
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if (method == null) {
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throw new Error("method is null");
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}
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if (bean == null) {
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throw new Error("target bean is null");
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}
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try {
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method.invoke(bean, args);
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} catch (Exception exception) {
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throw new Error("could not execute method: " + method, exception);
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}
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}
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private static PropertyDescriptor[] getPropertyDescriptors(Object object) {
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Class type = object.getClass();
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synchronized (System.out) {
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System.out.println(type);
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ClassLoader loader = type.getClassLoader();
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while (loader != null) {
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System.out.println(" - loader: " + loader);
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loader = loader.getParent();
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}
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}
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try {
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return Introspector.getBeanInfo(type).getPropertyDescriptors();
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} catch (IntrospectionException exception) {
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throw new Error("unexpected exception", exception);
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}
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}
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}
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