/**
* For copyright information see the LICENSE document.
*/
package gwlpr.database.jpa;
import java.io.Serializable;
import javax.persistence.Query;
import javax.persistence.EntityNotFoundException;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
import gwlpr.database.entities.Map;
import gwlpr.database.entities.Spawnpoint;
import gwlpr.database.entities.SpawnpointPK;
import gwlpr.database.jpa.exceptions.NonexistentEntityException;
import gwlpr.database.jpa.exceptions.PreexistingEntityException;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
/**
*
* @author _rusty
*/
public class SpawnpointJpaController implements Serializable
{
public SpawnpointJpaController(EntityManagerFactory emf) {
this.emf = emf;
}
private EntityManagerFactory emf = null;
public EntityManager getEntityManager() {
return emf.createEntityManager();
}
public void create(Spawnpoint spawnpoint) throws PreexistingEntityException, Exception {
if (spawnpoint.getSpawnpointPK() == null) {
spawnpoint.setSpawnpointPK(new SpawnpointPK());
}
spawnpoint.getSpawnpointPK().setMapID(spawnpoint.getMap().getId());
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Map map = spawnpoint.getMap();
if (map != null) {
map = em.getReference(map.getClass(), map.getId());
spawnpoint.setMap(map);
}
em.persist(spawnpoint);
if (map != null) {
map.getSpawnpointCollection().add(spawnpoint);
map = em.merge(map);
}
em.getTransaction().commit();
} catch (Exception ex) {
if (findSpawnpoint(spawnpoint.getSpawnpointPK()) != null) {
throw new PreexistingEntityException("Spawnpoint " + spawnpoint + " already exists.", ex);
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}
public void edit(Spawnpoint spawnpoint) throws NonexistentEntityException, Exception {
spawnpoint.getSpawnpointPK().setMapID(spawnpoint.getMap().getId());
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Spawnpoint persistentSpawnpoint = em.find(Spawnpoint.class, spawnpoint.getSpawnpointPK());
Map mapOld = persistentSpawnpoint.getMap();
Map mapNew = spawnpoint.getMap();
if (mapNew != null) {
mapNew = em.getReference(mapNew.getClass(), mapNew.getId());
spawnpoint.setMap(mapNew);
}
spawnpoint = em.merge(spawnpoint);
if (mapOld != null && !mapOld.equals(mapNew)) {
mapOld.getSpawnpointCollection().remove(spawnpoint);
mapOld = em.merge(mapOld);
}
if (mapNew != null && !mapNew.equals(mapOld)) {
mapNew.getSpawnpointCollection().add(spawnpoint);
mapNew = em.merge(mapNew);
}
em.getTransaction().commit();
} catch (Exception ex) {
String msg = ex.getLocalizedMessage();
if (msg == null || msg.length() == 0) {
SpawnpointPK id = spawnpoint.getSpawnpointPK();
if (findSpawnpoint(id) == null) {
throw new NonexistentEntityException("The spawnpoint with id " + id + " no longer exists.");
}
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}
public void destroy(SpawnpointPK id) throws NonexistentEntityException {
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Spawnpoint spawnpoint;
try {
spawnpoint = em.getReference(Spawnpoint.class, id);
spawnpoint.getSpawnpointPK();
} catch (EntityNotFoundException enfe) {
throw new NonexistentEntityException("The spawnpoint with id " + id + " no longer exists.", enfe);
}
Map map = spawnpoint.getMap();
if (map != null) {
map.getSpawnpointCollection().remove(spawnpoint);
map = em.merge(map);
}
em.remove(spawnpoint);
em.getTransaction().commit();
} finally {
if (em != null) {
em.close();
}
}
}
public List<Spawnpoint> findSpawnpointEntities() {
return findSpawnpointEntities(true, -1, -1);
}
public List<Spawnpoint> findSpawnpointEntities(int maxResults, int firstResult) {
return findSpawnpointEntities(false, maxResults, firstResult);
}
private List<Spawnpoint> findSpawnpointEntities(boolean all, int maxResults, int firstResult) {
EntityManager em = getEntityManager();
try {
CriteriaQuery cq = em.getCriteriaBuilder().createQuery();
cq.select(cq.from(Spawnpoint.class));
Query q = em.createQuery(cq);
if (!all) {
q.setMaxResults(maxResults);
q.setFirstResult(firstResult);
}
return q.getResultList();
} finally {
em.close();
}
}
public Spawnpoint findSpawnpoint(SpawnpointPK id) {
EntityManager em = getEntityManager();
try {
return em.find(Spawnpoint.class, id);
} finally {
em.close();
}
}
public int getSpawnpointCount() {
EntityManager em = getEntityManager();
try {
CriteriaQuery cq = em.getCriteriaBuilder().createQuery();
Root<Spawnpoint> rt = cq.from(Spawnpoint.class);
cq.select(em.getCriteriaBuilder().count(rt));
Query q = em.createQuery(cq);
return ((Long) q.getSingleResult()).intValue();
} finally {
em.close();
}
}
}