/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.seam.examples.booking.booking;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.List;
import javax.ejb.Stateful;
import javax.enterprise.context.SessionScoped;
import javax.enterprise.event.Observes;
import javax.enterprise.event.Reception;
import javax.enterprise.event.TransactionPhase;
import javax.enterprise.inject.Instance;
import javax.enterprise.inject.Produces;
import javax.inject.Inject;
import javax.inject.Named;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.JoinType;
import javax.persistence.criteria.Root;
import org.jboss.solder.logging.Logger;
import org.jboss.seam.examples.booking.account.Authenticated;
import org.jboss.seam.examples.booking.i18n.DefaultBundleKey;
import org.jboss.seam.examples.booking.model.Booking;
import org.jboss.seam.examples.booking.model.Booking_;
import org.jboss.seam.examples.booking.model.User;
import org.jboss.seam.examples.booking.model.User_;
import org.jboss.seam.international.status.Messages;
import org.jboss.seam.security.Identity;
/**
* The booking history exposes the current users existing bookings
*
* @author <a href="http://community.jboss.org/people/dan.j.allen">Dan Allen</a>
*/
@Stateful
@SessionScoped
@Named
public class BookingHistory {
@Inject
private Logger log;
@PersistenceContext
private EntityManager entityManager;
@Inject
private Messages messages;
@Inject
private Identity identity;
@Inject
@Authenticated
private Instance<User> currentUserInstance;
private List<Booking> bookingsForUser = null;
@Produces
@Authenticated
@Named("bookings")
public List<Booking> getBookingsForCurrentUser() {
if (bookingsForUser == null && identity.isLoggedIn()) {
fetchBookingsForCurrentUser();
}
return bookingsForUser;
}
public void onBookingComplete(
@Observes(during = TransactionPhase.AFTER_SUCCESS, notifyObserver = Reception.IF_EXISTS) @Confirmed Booking booking) {
// optimization, save the db call
if (bookingsForUser != null) {
log.info("Adding new booking to user's cached booking history");
bookingsForUser.add(booking);
} else {
log.info("User's booking history not loaded. Skipping cache update.");
}
}
public void cancelBooking(final Booking selectedBooking) {
log.infov("Canceling booking {0} for {1}", selectedBooking.getId(), currentUserInstance.get().getName());
Booking booking = entityManager.find(Booking.class, selectedBooking.getId());
if (booking != null) {
entityManager.remove(booking);
messages.info(new DefaultBundleKey("booking_canceled"))
.defaults("The booking at the {0} on {1} has been canceled.")
.params(selectedBooking.getHotel().getName(),
DateFormat.getDateInstance(SimpleDateFormat.MEDIUM).format(selectedBooking.getCheckinDate()));
} else {
messages.info(new DefaultBundleKey("booking_doesNotExist")).defaults(
"Our records indicate that the booking you selected has already been canceled.");
}
bookingsForUser.remove(selectedBooking);
}
private void fetchBookingsForCurrentUser() {
String username = currentUserInstance.get().getUsername();
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<Booking> cquery = builder.createQuery(Booking.class);
Root<Booking> booking = cquery.from(Booking.class);
booking.fetch(Booking_.hotel, JoinType.INNER);
cquery.select(booking).where(builder.equal(booking.get(Booking_.user).get(User_.username), username))
.orderBy(builder.asc(booking.get(Booking_.checkinDate)));
bookingsForUser = entityManager.createQuery(cquery).getResultList();
}
}