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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); 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.apache.tuscany.sca.binding.corba.provider.reference;
import java.lang.reflect.Method;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.CallbackFilter;
import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.NoOp;
import org.omg.CORBA.Object;
/**
* @version $Rev$ $Date$
*/
public class InterfaceInstanceCreator {
private static final CallbackFilter FILTER = new CallbackFilter() {
public int accept(Method method) {
return 1;
}
};
/**
* Dynamically creates instance of user defined interface. Instance is
* enhanced by RemoteMethodInterceptor
*
* @param reference
* CORBA reference
* @param forClass
* user defined interface
* @return dynamic implementation instance
*/
public static java.lang.Object createInstance(Object reference, Class<?> forClass) {
java.lang.Object result = null;
try {
Enhancer enhancer = new Enhancer();
enhancer.setInterfaces(new Class[] {forClass});
enhancer.setCallbackFilter(FILTER);
enhancer.setCallbackTypes(new Class[] {NoOp.class, MethodInterceptor.class});
Class<?> newClass = enhancer.createClass();
Enhancer.registerStaticCallbacks(newClass, new Callback[] {NoOp.INSTANCE,
new InterfaceMethodInterceptor(reference, forClass)});
result = newClass.newInstance();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
}
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