1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2014, Red Hat, Inc. and/or its affiliates, and individual
4 * contributors by the @authors tag. See the copyright.txt in the
5 * distribution for a full listing of individual contributors.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.jboss.as.quickstarts.tasksrs.model;
18
19 import java.util.List;
20
21 import javax.ejb.Stateful;
22 import javax.inject.Inject;
23 import javax.persistence.EntityManager;
24
25 /**
26 * Provides functionality for manipulation with users using persistence context from {@link Resources}.
27 *
28 * @author Lukas Fryc
29 * @author Oliver Kiss
30 *
31 */
32 @Stateful
33 public class UserDaoImpl implements UserDao {
34
35 @Inject
36 private EntityManager em;
37
38 public User getForUsername(String username) {
39 List<User> result = em.createQuery("select u from User u where u.username = ?1", User.class).setParameter(1, username)
40 .getResultList();
41
42 if (result.isEmpty()) {
43 return null;
44 }
45 return result.get(0);
46 }
47
48 public void createUser(User user) {
49 em.persist(user);
50 }
51 }