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Specializes.java
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Specializes.java
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/*
* JBoss, Home of Professional Open Source
* 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;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import jakarta.enterprise.event.Event;
import jakarta.enterprise.util.AnnotationLiteral;
/**
* <p>
* Indicates that a bean directly specializes another bean. May be applied to a bean class or producer method.
* </p>
*
* <p>
* If a bean directly specializes a second bean, it inherits:
* </p>
*
* <ul>
* <li>all qualifiers of the second bean, and</li>
* <li>the name, if any, of the second bean.</li>
* </ul>
*
* <p>
* If the second bean has a name, the bean may not declare a name using {@link jakarta.inject.Named @Named}. Furthermore, the
* bean must have all the bean types of the second bean.
* </p>
*
* <ul>
* <li>If a bean class of a managed bean is annotated <code>@Specializes</code> , then the bean class must directly extend the
* bean class of a second managed bean. Then the first managed bean directly specializes the second managed bean.</li>
*
* <li>If a bean class of a session bean is annotated <code>@Specializes</code> , then the bean class must directly extend the
* bean class of a second session bean. Then the first session bean directly specializes the second session bean.</li>
*
* <li>If a producer method is annotated <code>@Specializes</code>, then it must be non-static and directly override another
* producer method. Then the first producer method directly specializes the second producer method.</li>
* </ul>
*
* <p>
* If a bean is specialized by any enabled bean, the first bean is disabled.
* </p>
*
* <p>CDI Lite implementations are not required to provide support for specialization.</p>
*
* @author Gavin King
* @author Pete Muir
*/
@Target({ TYPE, METHOD })
@Retention(RUNTIME)
@Documented
public @interface Specializes {
/**
* Supports inline instantiation of the {@link Specializes} annotation.
*
* @author Martin Kouba
* @since 2.0
* @see Instance
* @see Event
*/
public static final class Literal extends AnnotationLiteral<Specializes> implements Specializes {
private static final long serialVersionUID = 1L;
public static final Literal INSTANCE = new Literal();
}
}