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: * $Header:$
18: */
19: package org.apache.beehive.controls.runtime.bean;
20:
21: import java.beans.DefaultPersistenceDelegate;
22: import java.beans.Encoder;
23: import java.beans.Expression;
24: import java.beans.XMLEncoder;
25:
26: /**
27: * The ContextPersistenceDelegate class supports the XML persistance of ControlBeanContext
28: * instances by implementing the <code>java.beans.PersistenceDelegate</b> API, and overriding
29: * the default persistance algorithm based upon the runtime structure for Controls.
30: * <p>
31: */
32: public class ContextPersistenceDelegate extends
33: DefaultPersistenceDelegate {
34: /**
35: * PersistenceDelegate.instantiate()
36: */
37: protected Expression instantiate(Object oldInstance, Encoder out) {
38: //
39: // Instead of directly creating a context instance, simply ask the containing
40: // bean to return the associated context.
41: //
42: return new Expression(((XMLEncoder) out).getOwner(),
43: "getControlBeanContext", null);
44: }
45:
46: /**
47: * PersistenceDelegate.initialize()
48: */
49: protected void initialize(Class<?> type, Object oldInstance,
50: Object newInstance, Encoder out) {
51: //super.initialize(type, oldInstance, newInstance, out);
52: }
53:
54: /**
55: * PersistenceDelegate.writeObject()
56: */
57: public void writeObject(Object oldInstance, Encoder out) {
58: super.writeObject(oldInstance, out);
59: }
60: }
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