package act.inject;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* 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.
* #L%
*/
import org.osgl.inject.BeanSpec;
import java.lang.reflect.Field;
/**
* Listens for injections into instances of type {@link #listenTo()}. Useful for performing further
* injections, post-injection initialization, and more.
*/
public interface DependencyInjectionListener {
/**
* Returns the classes this listener is interested in
*
* @return A list of classes
*/
Class[] listenTo();
/**
* Invoked once an instance has been created.
* <p>
* If {@link DependencyInjector} inject a field and the {@link Field#getGenericType() generic type} of
* the field is kind of {@link java.lang.reflect.ParameterizedType}, then the type parameters of that
* generic type will be passed to the listener
* </p>
*
* @param bean instance to be returned by {@link DependencyInjector}
* @param beanSpec the spec about the bean instance
*/
void onInjection(Object bean, BeanSpec beanSpec);
}