/*
* JBoss, Home of Professional Open Source
* Copyright 2008, Red Hat Middleware LLC, 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 javax.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;

/**
 * <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 javax.inject.Named &#064;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 
 * <tt>&#064;Specializes</tt>, 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 
 * <tt>&#064;Specializes</tt>, 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 
 * <tt>&#064;Specializes</tt>, 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>
 * 
 * @author Gavin King
 * @author Pete Muir
 */

@Target({TYPE, METHOD})
@Retention(RUNTIME)
@Documented
public @interface Specializes
{
}
