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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 javax.enterprise.context;

import static java.lang.annotation.ElementType.FIELD;
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.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import javax.enterprise.util.AnnotationLiteral;

/**
 * 
 * Specifies that a bean is request scoped.
 * 
 * 
 * While RequestScoped must be associated with the built-in request context required by the specification,
 * third-party extensions are
 * allowed to also associate it with their own context. Behavior described below is only related to the built-in request context.
 * 
 *
 * 
 * The request scope is active:
 * 
 *
 * 
 * during the service() method of any servlet in the web application, during the doFilter() method of any
 * servlet filter and when the container calls any ServletRequestListener or AsyncListener,
 * during any Java EE web service invocation,
 * during any remote method invocation of any EJB, during any asynchronous method invocation of any EJB, during any call to
 * an EJB timeout method and during message delivery to any EJB message-driven bean, and
 * during @PostConstruct callback of any bean.
 * 
 *
 * 
 * The request context is destroyed:
 * 
 *
 * 
 * at the end of the servlet request, after the service() method, all doFilter() methods, and all
 * requestDestroyed() and onComplete() notifications return,
 * after the web service invocation completes,
 * after the EJB remote method invocation, asynchronous method invocation, timeout or message delivery completes if it
 * did not already exist when the invocation occurred, or
 * after the @PostConstruct callback completes, if it did not already exist when the @PostConstruct
 * callback occurred.
 * 
 *
 * 
 * An event with qualifier @Initialized(RequestScoped.class) is fired when the request context is initialized and an
 * event
 * with qualifier @Destroyed(RequestScoped.class) when the request context is destroyed. The event payload is:
 * 
 *
 * 
 * the ServletRequest if the context is initialized or destroyed due to a servlet request, or
 * the ServletRequest if the context is initialized or destroyed due to a web service invocation, or
 * any java.lang.Object for other types of request.
 * 
 *
 * @author Gavin King
 * @author Pete Muir
 * @author Antoine Sabot-Durand
 */

@Target({ TYPE, METHOD, FIELD })
@Retention(RUNTIME)
@Documented
@NormalScope
@Inherited
public @interface RequestScoped {

    /**
     * Supports inline instantiation of the {@link RequestScoped} annotation.
     *
     * @author Martin Kouba
     * @since 2.0
     */
    public final static class Literal extends AnnotationLiteral implements RequestScoped {

        public static final Literal INSTANCE = new Literal();

        private static final long serialVersionUID = 1L;

    }

}