01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: package java.beans;
19:
20: import java.lang.reflect.InvocationHandler;
21: import java.lang.reflect.Proxy;
22:
23: class ProxyPersistenceDelegate extends DefaultPersistenceDelegate {
24: @Override
25: protected Expression instantiate(Object oldInstance, Encoder out) {
26: assert oldInstance instanceof Proxy : oldInstance;
27: Class[] interfaces = oldInstance.getClass().getInterfaces();
28: InvocationHandler handler = Proxy
29: .getInvocationHandler(oldInstance);
30: return new Expression(oldInstance, Proxy.class,
31: "newProxyInstance", //$NON-NLS-1$
32: new Object[] { oldInstance.getClass().getClassLoader(),
33: interfaces, handler });
34: }
35:
36: @Override
37: protected void initialize(Class<?> type, Object oldInstance,
38: Object newInstance, Encoder out) {
39: // check for consistency
40: assert oldInstance instanceof Proxy : oldInstance;
41: assert newInstance instanceof Proxy : newInstance;
42: assert newInstance == oldInstance;
43: super .initialize(type, oldInstance, newInstance, out);
44: }
45:
46: @Override
47: protected boolean mutatesTo(Object oldInstance, Object newInstance) {
48: assert oldInstance instanceof Proxy : oldInstance;
49: assert oldInstance == newInstance;
50: return super.mutatesTo(oldInstance, newInstance);
51: }
52: }
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