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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package javax.faces.view;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import javax.enterprise.context.NormalScope;
/**
* <p class="changed_added_2_2">When this annotation, along with {@code
* javax.inject.Named} is found on a class, the runtime must place the
* bean in a CDI scope such that it remains active as long as {@link
* javax.faces.application.NavigationHandler#handleNavigation} does not
* cause a navigation to a view with a viewId that is different than the
* viewId of the current view. Any injections and notifications required
* by CDI and the Java EE platform must occur as usual at the expected
* time.</p>
*
* <div class="changed_added_2_2">
* <p>If <code>ProjectStage</code> is not
* <code>ProjectStage.Production</code>, verify that the current {@link
* javax.faces.component.UIViewRoot} does not have its {@code transient}
* property set to {@code true}. If so, add a <code>FacesMessage</code>
* for the current {@code viewId} to the <code>FacesContext</code>
* stating {@code @ViewScoped} beans cannot work if the view is marked
* as transient. Also log a <code>Level.WARNING</code> message to the
* log. If <code>ProjectStage</code> <strong>is</strong>
* <code>ProjectStage.Production</code>, do not do this
* verification.</p>
* <p>The bean must be stored in the map returned from
* {@link javax.faces.component.UIViewRoot#getViewMap(boolean)}.</p>
* <p>Use of this annotation requires that any beans stored in view scope
* must be serializable and proxyable as defined in the CDI specification.
* </p>
* <p>The runtime must ensure that any methods on the bean annotated
* with {@code PostConstruct} or {@code PreDestroy} are called when the
* scope begins and ends, respectively. Two circumstances can cause the
* scope to end.</p>
* <ul>
* <li><p>{@link javax.faces.context.FacesContext#setViewRoot} is called
* with the new {@code UIViewRoot} being different than the current
* one.</p></li>
* <li><p>The session, that happened to be active when the bean was
* created, expires. If no session existed when the bean was created,
* then this circumstance does not apply.</p></li>
* </ul>
* <p>In the session expiration case, the runtime must ensure that
* {@link javax.faces.context.FacesContext#getCurrentInstance} returns a
* valid instance if it is called during the processing of the
* {@code @PreDestroy} annotated method. The set of methods on {@code
* FacesContext} that are valid to call in this circumstance is
* identical to those documented as "valid to call this method during
* application startup or shutdown". On the {@link
* javax.faces.context.ExternalContext} returned from that {@code
* FacesContext}, all of the methods documented as "valid to call this
* method during application startup or shutdown" are valid to call. In
* addition, the method {@link
* javax.faces.context.ExternalContext#getSessionMap} is also valid to
* call.</p>
*
*
* </div>
* @since 2.2
*/
@NormalScope
@Inherited
@Documented
@Target({ElementType.TYPE, ElementType.FIELD, ElementType.METHOD})
@Retention(value = RetentionPolicy.RUNTIME)
public @interface ViewScoped {
}
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