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package javax.faces.bean;
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;
/**
* When this annotation, along with
* {@code ManagedBean} is found on a class, the runtime must act as if a
* <managed-bean-scope>view<managed-bean-scope>
* element was declared for the corresponding managed bean.
*
* If ProjectStage is not
* ProjectStage.Production, verify that the current {@code
* UIViewRoot} does not have its {@code transient}
* property set to {@code true}. If so, add a FacesMessage
* for the current {@code viewId} to the FacesContext
* stating {@code @ViewScoped} beans cannot work if the view is marked
* as transient. Also log a Level.WARNING message to the
* log. If ProjectStage is
* ProjectStage.Production, do not do this
* verification.
* The bean must be stored in the map returned from
* {@code javax.faces.component.UIViewRoot.getViewMap(boolean)}.
* 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.
*
* {@code FacesContext.setViewRoot()} is called with the new
* {@code UIViewRoot} being different than the current one.
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.
* In the session expiration case, the runtime must ensure that
* {@code 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 {@code 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 {@code
* ExternalContext.getSessionMap()} is also valid to call.
* The annotations in this package may be
* deprecated in a future version of this specification because they
* duplicate functionality provided by other specifications included in
* JavaEE. When possible, the corresponding annotations from the
* appropriate Java EE specification should be used in preference to
* these annotations. In this case, the corresponding annotation is
* {@code javax.faces.view.ViewScoped}. The functionality of this
* corresponding annotation is identical to this one, but it is
* implemented as a CDI custom scope.
*
*
* @since 2.0
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Inherited
public @interface ViewScoped {
}