72 lines
2.5 KiB
Java
72 lines
2.5 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Header:$
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*/
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package org.apache.beehive.controls.runtime.bean;
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import java.beans.BeanInfo;
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import java.beans.DefaultPersistenceDelegate;
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import java.beans.Encoder;
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import java.beans.Expression;
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import java.beans.IntrospectionException;
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import java.beans.Introspector;
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import java.beans.PersistenceDelegate;
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import java.beans.PropertyDescriptor;
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import java.beans.Statement;
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import java.beans.XMLEncoder;
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import java.util.Set;
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import org.apache.beehive.controls.api.ControlException;
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/**
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* The ImplPersistenceDelegate class supports the XML persistance of Control Implementation
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* instances by implementing the <code>java.beans.PersistenceDelegate</b> API, and overriding
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* the default persistance algorithm based upon the runtime structure for Controls.
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* <p>
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*/
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public class ImplPersistenceDelegate extends DefaultPersistenceDelegate
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{
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/**
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* PersistenceDelegate.instantiate()
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*/
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protected Expression instantiate(Object oldInstance, Encoder out)
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{
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//
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// An implementation instance is actually constructed at decode time by calling
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// ControlBean.ensureControl on the parent bean. This will create a new impl
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// instance and run the impl initializer on it.
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//
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return new Expression(((XMLEncoder)out).getOwner(), "ensureControl", null);
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}
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/**
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* PersistenceDelegate.initialize()
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*/
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protected void initialize(Class<?> type, Object oldInstance, Object newInstance, Encoder out)
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{
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super.initialize(type, oldInstance, newInstance, out);
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}
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/**
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* PersistenceDelegate.writeObject()
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*/
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public void writeObject(Object oldInstance, Encoder out)
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{
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super.writeObject(oldInstance, out);
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}
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}
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