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 * Copyright 2010, 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,  
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package javax.enterprise.inject.spi;

/**
 * 

* The container fires an event of this type for every Java EE component class supporting injection that may be instantiated by * the container at runtime, including every managed bean declared using {@code javax.annotation.ManagedBean}, EJB session or * message-driven bean, enabled bean, enabled interceptor or enabled decorator. *

*

* Any observer of this event is permitted to wrap and/or replace the {@link javax.enterprise.inject.spi.InjectionTarget}. The * container must use the final value of this property, after all observers have been called, whenever it performs injection * upon the managed bean, session bean or other Java EE component class supporting injection. *

*

* For example, this observer decorates the {@code InjectionTarget} for all servlets. *

* *
 * public <T extends Servlet> void decorateServlet(@Observes ProcessInjectionTarget<T> pit) {
 *     pit.setInjectionTarget(decorate(pit.getInjectionTarget()));
 * }
 * 
*

* If any observer method of a {@code ProcessInjectionTarget} event throws an exception, the exception is treated as a * definition error by the container. *

* * @see InjectionTarget * @author David Allen * @param The managed bean class, session bean class or Java EE component class supporting injection */ public interface ProcessInjectionTarget { /** * Returns the {@link javax.enterprise.inject.spi.AnnotatedType} representing the managed bean class, session bean class or * other Java EE component class supporting injection. * * @return the {@link javax.enterprise.inject.spi.AnnotatedType} of the bean with an injection target * @throws IllegalStateException if called outside of the observer method invocation */ public AnnotatedType getAnnotatedType(); /** * Returns the {@link javax.enterprise.inject.spi.InjectionTarget} object that will be used by the container to perform * injection. * * @return the {@link javax.enterprise.inject.spi.InjectionTarget} object which performs the injection * @throws IllegalStateException if called outside of the observer method invocation */ public InjectionTarget getInjectionTarget(); /** * Replaces the {@link javax.enterprise.inject.spi.InjectionTarget} which performs injection for this target. * * @param injectionTarget The new {@link javax.enterprise.inject.spi.InjectionTarget} to use * @throws IllegalStateException if called outside of the observer method invocation */ public void setInjectionTarget(InjectionTarget injectionTarget); /** * Registers a definition error with the container, causing the container to abort deployment after bean discovery is * complete. * * @param t A {@link java.lang.Throwable} representing the definition error * @throws IllegalStateException if called outside of the observer method invocation */ public void addDefinitionError(Throwable t); }




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