J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 4508780 |
| 27 | * @summary Tests shared access to the Introspector cache |
| 28 | * @author Mark Davidson |
| 29 | */ |
| 30 | |
| 31 | import java.beans.IntrospectionException; |
| 32 | import java.beans.Introspector; |
| 33 | import java.beans.PropertyDescriptor; |
| 34 | |
| 35 | import java.lang.reflect.Method; |
| 36 | |
| 37 | /** |
| 38 | * Multiple classloader test to ensure that methods |
| 39 | * returned by the BeanInfo classes are unique to the classloader. |
| 40 | */ |
| 41 | public class Test4508780 implements Runnable { |
| 42 | /** |
| 43 | * This is here to force the bean classes to be compiled |
| 44 | */ |
| 45 | private static final Class[] COMPILE = { |
| 46 | Bean.class, |
| 47 | Bean2.class, |
| 48 | Bean3.class, |
| 49 | Bean4.class, |
| 50 | }; |
| 51 | |
| 52 | public static void main(String[] args) { |
| 53 | for (int i = 0; i < 10; i++) test(); |
| 54 | } |
| 55 | |
| 56 | private static void test() { |
| 57 | test("Bean", "Bean2", "Bean3", "Bean4"); |
| 58 | test("Bean4", "Bean", "Bean2", "Bean3"); |
| 59 | test("Bean3", "Bean4", "Bean", "Bean2"); |
| 60 | test("Bean2", "Bean3", "Bean4", "Bean"); |
| 61 | Introspector.flushCaches(); |
| 62 | } |
| 63 | |
| 64 | private static void test(String... names) { |
| 65 | new Thread(new Test4508780(names)).start(); |
| 66 | } |
| 67 | |
| 68 | private final ClassLoader loader = new SimpleClassLoader(); |
| 69 | private final String[] names; |
| 70 | |
| 71 | private Test4508780(String... names) { |
| 72 | this.names = names; |
| 73 | } |
| 74 | |
| 75 | public void run() { |
| 76 | for (String name : this.names) { |
| 77 | Object bean; |
| 78 | try { |
| 79 | bean = this.loader.loadClass(name).newInstance(); |
| 80 | } catch (Exception exception) { |
| 81 | throw new Error("could not instantiate bean: " + name, exception); |
| 82 | } |
| 83 | if (this.loader != bean.getClass().getClassLoader()) { |
| 84 | throw new Error("bean class loader is not equal to default one"); |
| 85 | } |
| 86 | PropertyDescriptor[] pds = getPropertyDescriptors(bean); |
| 87 | for (PropertyDescriptor pd : pds) { |
| 88 | Class type = pd.getPropertyType(); |
| 89 | Method setter = pd.getWriteMethod(); |
| 90 | Method getter = pd.getReadMethod(); |
| 91 | |
| 92 | if (type.equals(String.class)) { |
| 93 | executeMethod(setter, bean, "Foo"); |
| 94 | } else if (type.equals(int.class)) { |
| 95 | executeMethod(setter, bean, Integer.valueOf(1)); |
| 96 | } |
| 97 | executeMethod(getter, bean); |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | private static void executeMethod(Method method, Object bean, Object... args) { |
| 103 | if (method == null) { |
| 104 | throw new Error("method is null"); |
| 105 | } |
| 106 | if (bean == null) { |
| 107 | throw new Error("target bean is null"); |
| 108 | } |
| 109 | try { |
| 110 | method.invoke(bean, args); |
| 111 | } catch (Exception exception) { |
| 112 | throw new Error("could not execute method: " + method, exception); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | private static PropertyDescriptor[] getPropertyDescriptors(Object object) { |
| 117 | Class type = object.getClass(); |
| 118 | synchronized (System.out) { |
| 119 | System.out.println(type); |
| 120 | ClassLoader loader = type.getClassLoader(); |
| 121 | while (loader != null) { |
| 122 | System.out.println(" - loader: " + loader); |
| 123 | loader = loader.getParent(); |
| 124 | } |
| 125 | } |
| 126 | try { |
| 127 | return Introspector.getBeanInfo(type).getPropertyDescriptors(); |
| 128 | } catch (IntrospectionException exception) { |
| 129 | throw new Error("unexpected exception", exception); |
| 130 | } |
| 131 | } |
| 132 | } |