/**
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and/or its affiliates, 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.errai.demo.grocery.client.local.producer;
import java.util.List;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Produces;
import javax.persistence.EntityManager;
import org.jboss.errai.demo.grocery.client.shared.User;
import org.jboss.errai.jpa.client.local.ErraiEntityManager;
@ApplicationScoped
public class UserProducer {
// not sure User (a JPA entity) should traditionally be an injectable CDI bean. We'll see how this pans out.
@Produces
@ApplicationScoped
private User getUser(EntityManager em) {
// XXX Of course, this only works if all the data is local.
// When there is a server side to this demo, we will always have to authenticate with it before
// we can produce a User instance capable of syncing.
List<User> users = em.createNamedQuery("allUsers", User.class).getResultList();
final User user;
if (users.isEmpty()) {
user = new User();
user.setName("me");
em.persist(user);
em.flush();
}
else {
user = users.get(0);
}
return user;
}
}