Created
October 21, 2010 04:53
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A bridge between the ServletContext life cycle events and CDI observers (with example observer ApplicationInitializer)
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// uncomment line if you want the instance to be retained in application scope | |
// @ApplicationScoped | |
public class ApplicationInitializer | |
{ | |
public void onStartup(@Observes @Initialized ServletContext ctx) | |
{ | |
System.out.println("Initialized web application at context path " + ctx.getContextPath()); | |
} | |
} |
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@Qualifier | |
@Retention(RetentionPolicy.RUNTIME) | |
@Target({ElementType.FIELD, ElementType.PARAMETER}) | |
public @interface Destroyed {} |
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@Qualifier | |
@Retention(RetentionPolicy.RUNTIME) | |
@Target({ElementType.FIELD, ElementType.PARAMETER}) | |
public @interface Initialized {} |
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@WebListener | |
public class ServletContextLifecycleNotifier implements ServletContextListener | |
{ | |
@Inject @Any | |
private Event<ServletContext> servletContextEvent; | |
@Override | |
public void contextInitialized(ServletContextEvent sce) | |
{ | |
servletContextEvent.select(new AnnotationLiteral<Initialized>() {}).fire(sce.getServletContext()); | |
} | |
@Override | |
public void contextDestroyed(ServletContextEvent sce) | |
{ | |
servletContextEvent.select(new AnnotationLiteral<Destroyed>() {}).fire(sce.getServletContext()); | |
} | |
} |
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Hello,
the example does not work in WAS Liberty profile if I uncommon ApplicationScoped. I get:
org.apache.webbeans.event.ObserverMethodImpl I Cannot send event to bean in non-active context
probably because ApplicationScope is not yet initialised by the time the ServletContextListener. contextInitialized() method is invoked. Any workarounds? Thanks.