org.force66.beantester.utils.GenericProxyHandler Maven / Gradle / Ivy
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Tests normal bean methods such as accessors, mutators, equals(), hashcode(), etc.
/*
* This software is licensed under the Apache License, Version 2.0
* (the "License") agreement; you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.force66.beantester.utils;
import java.io.IOException;
import java.io.ObjectStreamException;
import java.io.Serializable;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
/**
* Basic interface proxy that handles involvement for equals() and serialization
* @author D. Ashmore
*
*/
public class GenericProxyHandler implements InvocationHandler, Serializable {
private static final long serialVersionUID = -364189548578793927L;
private Class> interfaceType;
public GenericProxyHandler() {}
public GenericProxyHandler(Class> interfaceType) {
this.interfaceType = interfaceType;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
if ("equals".equals(method.getName())) {
Object other = args[0];
if (other == null) return false;
if (other instanceof Proxy) {
GenericProxyHandler otherProxyHandler = (GenericProxyHandler)Proxy.getInvocationHandler(other);
return interfaceType.equals(otherProxyHandler.interfaceType);
}
return false;
}
else if (method.getDeclaringClass().equals(Object.class)) {
return method.invoke(this, args);
}
throw new BeanTesterException("This is a generic interface proxy with no functionality")
.addContextValue("method", method.getName())
.addContextValue("interface class", interfaceType.getName());
}
private void writeObject(java.io.ObjectOutputStream out)
throws IOException {
out.writeObject(interfaceType);
out.close();
}
private void readObject(java.io.ObjectInputStream in)
throws IOException, ClassNotFoundException {
interfaceType = (Class>)in.readObject();
in.close();
}
private void readObjectNoData()
throws ObjectStreamException {
interfaceType=null;
}
}