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1
45 package org.openejb.client.proxy;
46
47 import java.util.Properties  ;
48
49
50
55 public class ProxyManager {
56
57
58 private static ProxyFactory defaultFactory;
62 private static String defaultFactoryName;
63
64 static {
65 String version = null;
66 Class factory = null;
67 try {
68 version = System.getProperty("java.vm.version");
69 } catch ( Exception e ) {
70 throw new RuntimeException ("Unable to determine the version of your VM. No ProxyFactory Can be installed");
72 }
73 ClassLoader cl = getContextClassLoader();
74
75 if ( version.startsWith("1.1") ) {
76 throw new RuntimeException ("This VM version is not supported: "+version);
77 } else if ( version.startsWith("1.2") ) {
78 defaultFactoryName = "JDK 1.2 ProxyFactory";
79
80 try {
81 Class.forName("org.opentools.proxies.Proxy", true, cl);
82 } catch ( Exception e ) {
83 throw new RuntimeException ("No ProxyFactory Can be installed. Unable to load the class org.opentools.proxies.Proxy. This class is needed for generating proxies in JDK 1.2 VMs.");
85 }
86
87 try {
88 factory = Class.forName("org.openejb.client.proxy.Jdk12ProxyFactory", true, cl);
89 } catch ( Exception e ) {
90 throw new RuntimeException ("No ProxyFactory Can be installed. Unable to load the class org.openejb.client.proxy.Jdk12ProxyFactory.");
92 }
93 } else {
94 defaultFactoryName = "JDK 1.3 ProxyFactory";
95
96 try {
97 factory = Class.forName("org.openejb.client.proxy.Jdk13ProxyFactory", true, cl);
98 } catch ( Exception e ) {
99 throw new RuntimeException ("No ProxyFactory Can be installed. Unable to load the class org.openejb.client.proxy.Jdk13ProxyFactory.");
101 }
102 }
103
104 try {
105
106 defaultFactory = (ProxyFactory)factory.newInstance();
107 defaultFactory.init( new Properties () );
108
109 } catch ( Exception e ) {
110 throw new RuntimeException ("No ProxyFactory Can be installed. Unable to load the class org.openejb.client.proxy.Jdk13ProxyFactory.");
112 }
113
114 }
115
116 public static ProxyFactory getDefaultFactory() {
117 return defaultFactory;
118 }
119
120 public static String getDefaultFactoryName() {
121 return defaultFactoryName;
122 }
123
132 public static InvocationHandler getInvocationHandler(Object proxy) {
133 return defaultFactory.getInvocationHandler(proxy);
134 }
135
136
143 public static Object setInvocationHandler(Object proxy, InvocationHandler handler) {
144 return defaultFactory.setInvocationHandler(proxy, handler);
145 }
146
147
154 public static Class getProxyClass(Class interfaceType) throws IllegalAccessException {
155 return getProxyClass(new Class []{interfaceType});
156 }
157
158 public static Class getProxyClass(Class [] interfaces) throws IllegalAccessException {
159 return defaultFactory.getProxyClass( interfaces);
160 }
161
162
173 public static Object newProxyInstance(Class interfaceType, InvocationHandler h) throws IllegalAccessException {
174 return newProxyInstance(new Class []{interfaceType}, h);
175 }
176
177 public static Object newProxyInstance(Class [] interfaces, InvocationHandler h) throws IllegalAccessException {
178 return defaultFactory.newProxyInstance(interfaces, h);
179 }
180
181
186 public static boolean isProxyClass(Class cl) {
187 return defaultFactory.isProxyClass(cl);
188 }
189
190
193 public static Object newProxyInstance(Class proxyClass) throws IllegalAccessException {
194 return defaultFactory.newProxyInstance(proxyClass);
195 }
196
200 public static ClassLoader getContextClassLoader() {
201 return (ClassLoader ) java.security.AccessController.doPrivileged(
202 new java.security.PrivilegedAction () {
203 public Object run() {
204 return Thread.currentThread().getContextClassLoader();
205 }
206 }
207 );
208 }
209 }
210 |
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