io.quarkus.runtime

Annotation Type Startup

@Target(value={TYPE,METHOD,FIELD})
 @Retention(value=RUNTIME)
public @interface Startup

This annotation can be used to initialize a CDI bean at application startup. The behavior is similar to a declaration of an observer of the StartupEvent - a contextual instance is created and lifecycle callbacks (such as PostConstruct) are invoked. In fact, a synthetic observer of the StartupEvent is generated for each bean annotated with this annotation. Furthermore, value() can be used to specify the priority of the generated observer method and thus affect observers ordering.

The contextual instance is destroyed immediately afterwards for Dependent beans.

The following examples are functionally equivalent.

 @ApplicationScoped
 class Bean1 {
     void onStart(@Observes StartupEvent event) {
         // place the logic here 
     }
 }
 
 @Startup
 @ApplicationScoped
 class Bean2 {
 }
 

See Also:

StartupEvent

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
int	value

Element Detail

value

public abstract int value

Returns:

the priority

See Also:

Priority

Default:

2500