/*
* JBoss, Home of Professional Open Source
* Copyright 2015, 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.as.quickstarts.greeter.domain;
import javax.inject.Inject;
import javax.persistence.EntityManager;
import javax.persistence.NoResultException;
import javax.persistence.Query;
import javax.transaction.SystemException;
import javax.transaction.UserTransaction;
public class ManagedBeanUserDao implements UserDao {
@Inject
private EntityManager entityManager;
@Inject
private UserTransaction utx;
public User getForUsername(String username) {
try {
User user;
try {
utx.begin();
Query query = entityManager.createQuery("select u from User u where u.username = :username");
query.setParameter("username", username);
user = (User) query.getSingleResult();
} catch (NoResultException e) {
user = null;
}
utx.commit();
return user;
} catch (Exception e) {
try {
utx.rollback();
} catch (SystemException se) {
throw new RuntimeException(se);
}
throw new RuntimeException(e);
}
}
public void createUser(User user) {
try {
try {
utx.begin();
entityManager.persist(user);
} finally {
utx.commit();
}
} catch (Exception e) {
try {
utx.rollback();
} catch (SystemException se) {
throw new RuntimeException(se);
}
throw new RuntimeException(e);
}
}
}