DemoApplication.java

package demo;

import com.vaadin.annotations.Theme;
import com.vaadin.data.util.BeanItemContainer;
import com.vaadin.server.VaadinRequest;
import com.vaadin.spring.annotation.SpringUI;
import com.vaadin.ui.Table;
import com.vaadin.ui.UI;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.repository.query.Param;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;
import org.springframework.data.rest.core.annotation.RestResource;
import org.springframework.hateoas.Link;
import org.springframework.hateoas.Resource;
import org.springframework.hateoas.ResourceProcessor;
import org.springframework.stereotype.Component;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import java.util.Arrays;
import java.util.Collection;

@SpringBootApplication
public class DemoApplication {

    @Bean
    CommandLineRunner runner(ReservationRepository rr) {
        return args ->
                Arrays.asList("Marten,Josh,Dave,Mark,Mark,Juergen".split(","))
                        .forEach(x -> rr.save(new Reservation(x)));

    }

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
}


@SpringUI(path = "ui")
@Theme("valo")
class ReservationUI extends UI {

    @Autowired
    private ReservationRepository reservationRepository;

    @Override
    protected void init(VaadinRequest vaadinRequest) {
        Table components = new Table();
        components.setContainerDataSource(new BeanItemContainer<>(
                Reservation.class,
                this.reservationRepository.findAll()
        ));
        components.setSizeFull();
        setContent(components);
    }

}

@Component
class ReservationResourceProcessor implements ResourceProcessor<Resource<Reservation>> {

    @Override
    public Resource<Reservation> process(Resource<Reservation> reservationResource) {
        Reservation reservation = reservationResource.getContent();
        Long id = reservation.getId();
        String url = "http://aws.images.com/" + id + ".jpg";
        reservationResource.add(new Link(url, "profile-photo"));
        return reservationResource;
    }
}

@RepositoryRestResource
interface ReservationRepository extends JpaRepository<Reservation, Long> {

    @RestResource(path = "by-name")
    Collection<Reservation> findByReservationName(@Param("rn") String rn);
}