javax.faces.event.NamedEvent Maven / Gradle / Ivy
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package javax.faces.event;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.annotation.Inherited;
/**
* The presence of this annotation on a
* class automatically registers the class with the runtime as a {@link
* ComponentSystemEvent} for use with the <f:event />
* tag in a page. The value of the {@link #shortName} attribute is taken to
* be the short name for the {@link javax.faces.event.ComponentSystemEvent}.
* If the shortName has already been registered, the current class
* must be added to a
* List of of duplicate events for that name. If the event name is then
* referenced by an
* application, a FacesException must be thrown listing the
* shortName and the offending classes.
* @since 2.0
*/
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Inherited
public @interface NamedEvent {
/**
* The value of this annotation
* attribute is taken to be the short name for the {@link
* javax.faces.event.ComponentSystemEvent}. If the value of this
* attribute is ommitted, the following algorithm must be used
* by the code that processes this annotation to determine its value.
*
*
Get the unqualified class name (e.g.,
UserLoginEvent)
Strip off the trailing "Event", if present (e.g.,
UserLogin)
Convert the first character to lower-case (e.g.,
userLogin)
Prepend the package name to the lower-cased name.
*
*
*
* @return the short name
*/
String shortName() default "";
}