Java tutorial
/** * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 com.siriusit.spezg.multilib.storage.jpa; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.TypedQuery; import org.springframework.stereotype.Repository; import com.siriusit.spezg.multilib.domain.Person; import com.siriusit.spezg.multilib.domain.jpa.PersonDomainObject; import com.siriusit.spezg.multilib.storage.PersonRepository; /** * * @author Tommy B <Tommy.Bo@SiriusIT.com> */ @Repository("personRepository") public class JpaPersonRepository implements PersonRepository { @PersistenceContext(unitName = "multilib-db") private EntityManager entityManager; public EntityManager getEntityManager() { return entityManager; } public void setEntityManager(EntityManager entityManager) { this.entityManager = entityManager; } @Override public Person createPerson(String username, String phone, String mail, String title) { Person person = new PersonDomainObject(username, phone, mail, title); entityManager.persist(person); return person; } @Override public Person updatePerson(Person person) { Person persistedPerson = person; if (!(person instanceof PersonDomainObject)) { persistedPerson = findPersonByUsername(person.getUsername()); persistedPerson.setMail(person.getMail()); persistedPerson.setPhone(person.getPhone()); } entityManager.persist(persistedPerson); return persistedPerson; } @Override public void deletePerson(Person person) { entityManager.remove(person); } @Override public Person findPersonByUsername(String username) { TypedQuery<PersonDomainObject> query = entityManager.createNamedQuery("findPersonByUsername", PersonDomainObject.class); query.setParameter("username", username); return query.getSingleResult(); } @Override public boolean contains(Person person) { TypedQuery<Long> query = entityManager.createNamedQuery("countPersonsByUsername", Long.class); return query.setParameter("username", person.getUsername()).getSingleResult() == 1; } @Override public List<? extends Person> findPersonsByTitle(String title) { TypedQuery<PersonDomainObject> query = entityManager.createNamedQuery("findPersonsByTitle", PersonDomainObject.class); query.setParameter("title", title); return query.getResultList(); } }