2.10. Add a RESTful Web Service

Procedure 2.10. Add a RESTful Web Service

1. In the Project Explorer view, expand ticket-monster→Java Resources→src/main/java.
2. Right-click org.jboss.jdf.example.ticketmonster.rest and click New→Class.
3. In the Name field, type EventService and click Finish. This creates a EventService.java file that is automatically opened in a Java editor.
   

   Figure 2.18. Completed Name Field in Java Class Wizard

4. Add the following lines immediately above public class EventService {

   @Path("/events")
   @RequestScoped

   and add the following lines in between the braces of the EventService class

   @Inject
   private EntityManager em;
   
   @GET
   @Produces(MediaType.APPLICATION_JSON)
   public List<Event> getAllEvents() {
   	final List<Event> results =
   		em.createQuery("select e from Event e order by e.name").getResultList();
   	return results;
   }

5. Save the EventService.java file.
6. Resolve the errors relating to missing imports by right-clicking anywhere in the EventService class and clicking Source→Organize Imports.
7. For each class name that is not unique, select the class to use as follows and click Next:

   • For MediaType select javax.ws.rs.core.MediaType
   • For Event select org.jboss.jdf.example.ticketmonster.model.Event
   • For Produces select javax.ws.rs.Produces
   • For List select java.util.List
   • For Inject select java.inject.Inject
   • For RequestScoped select java.enterprise.context.RequestScoped
   

   Figure 2.19. javax.ws.rs.core.MediaType Selected for MediaType Class

8. When all the classes have been chosen, click Finish. The import statements corresponding to the class names selected in the previous step are added to the EventService.java file.
9. Save the EventService.java file.
10. In the Servers view expand jboss-eap-6.x, right-click ticket-monster and click Full Publish to update the deployed version of the application.
11. Open a new Web Browser and in the address bar of the Web Browser enter http://localhost:8080/ticket-monster/rest/events. This shows the output of the new RESTful endpoint.