/*
* JBoss, Home of Professional Open Source
* Copyright 2015, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed 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.jboss.weld.bean.proxy;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import javax.enterprise.inject.spi.Bean;
import org.jboss.weld.exceptions.UnproxyableResolutionException;
import org.jboss.weld.exceptions.WeldException;
import sun.reflect.ReflectionFactory;
/**
* {@link ProxyInstantiator} implementation that uses {@link ReflectionFactory#newConstructorForSerialization(Class, Constructor)} for creating instances of a
* proxy class.
*
* @author Jozef Hartinger
*
*/
class ReflectionFactoryProxyInstantiator implements ProxyInstantiator {
private final ReflectionFactory factory;
private final Constructor<Object> constructor;
ReflectionFactoryProxyInstantiator() {
this.factory = ReflectionFactory.getReflectionFactory();
try {
this.constructor = Object.class.getConstructor();
} catch (NoSuchMethodException e) {
throw new WeldException(e); // this should never happen!
}
}
@SuppressWarnings("unchecked")
@Override
public <T> T newInstance(Class<T> clazz) throws InstantiationException, IllegalAccessException {
try {
return (T) factory.newConstructorForSerialization(clazz, constructor).newInstance();
} catch (IllegalArgumentException e) {
throw new WeldException(e);
} catch (InvocationTargetException e) {
throw new WeldException(e);
}
}
@Override
public boolean isUsingConstructor() {
return false;
}
@Override
public void cleanup() {
}
@Override
public <T> UnproxyableResolutionException validateNoargConstructor(Constructor<T> constructor, Class<?> clazz, Bean<?> declaringBean)
throws UnproxyableResolutionException {
// noop - no constructor is fine
return null;
}
}