jakarta.enterprise.inject.spi.ProcessInjectionTarget Maven / Gradle / Ivy
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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,
* 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 jakarta.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 jakarta.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 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.
*
*
* CDI Lite implementations are not required to provide support for Portable Extensions.
*
* @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 AnnotatedType} representing the managed bean class, session bean class or
* other Java EE component class supporting injection.
*
* @return the {@link AnnotatedType} of the bean with an injection target
* @throws IllegalStateException if called outside of the observer method invocation
*/
public AnnotatedType getAnnotatedType();
/**
* Returns the {@link InjectionTarget} object that will be used by the container to perform
* injection.
*
* @return the {@link InjectionTarget} object which performs the injection
* @throws IllegalStateException if called outside of the observer method invocation
*/
public InjectionTarget getInjectionTarget();
/**
* Replaces the {@link InjectionTarget} which performs injection for this target.
*
* @param injectionTarget The new {@link 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);
}