/**
* 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.Item;
import gwlpr.database.entities.Inventory;
import gwlpr.database.entities.Storeditem;
import gwlpr.database.entities.StoreditemPK;
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 StoreditemJpaController implements Serializable
{
public StoreditemJpaController(EntityManagerFactory emf) {
this.emf = emf;
}
private EntityManagerFactory emf = null;
public EntityManager getEntityManager() {
return emf.createEntityManager();
}
public void create(Storeditem storeditem) throws PreexistingEntityException, Exception {
if (storeditem.getStoreditemPK() == null) {
storeditem.setStoreditemPK(new StoreditemPK());
}
storeditem.getStoreditemPK().setInventoryID(storeditem.getInventory().getId());
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Item itemID = storeditem.getItemID();
if (itemID != null) {
itemID = em.getReference(itemID.getClass(), itemID.getId());
storeditem.setItemID(itemID);
}
Inventory inventory = storeditem.getInventory();
if (inventory != null) {
inventory = em.getReference(inventory.getClass(), inventory.getId());
storeditem.setInventory(inventory);
}
em.persist(storeditem);
if (itemID != null) {
itemID.getStoreditemCollection().add(storeditem);
itemID = em.merge(itemID);
}
if (inventory != null) {
inventory.getStoreditemCollection().add(storeditem);
inventory = em.merge(inventory);
}
em.getTransaction().commit();
} catch (Exception ex) {
if (findStoreditem(storeditem.getStoreditemPK()) != null) {
throw new PreexistingEntityException("Storeditem " + storeditem + " already exists.", ex);
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}
public void edit(Storeditem storeditem) throws NonexistentEntityException, Exception {
storeditem.getStoreditemPK().setInventoryID(storeditem.getInventory().getId());
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Storeditem persistentStoreditem = em.find(Storeditem.class, storeditem.getStoreditemPK());
Item itemIDOld = persistentStoreditem.getItemID();
Item itemIDNew = storeditem.getItemID();
Inventory inventoryOld = persistentStoreditem.getInventory();
Inventory inventoryNew = storeditem.getInventory();
if (itemIDNew != null) {
itemIDNew = em.getReference(itemIDNew.getClass(), itemIDNew.getId());
storeditem.setItemID(itemIDNew);
}
if (inventoryNew != null) {
inventoryNew = em.getReference(inventoryNew.getClass(), inventoryNew.getId());
storeditem.setInventory(inventoryNew);
}
storeditem = em.merge(storeditem);
if (itemIDOld != null && !itemIDOld.equals(itemIDNew)) {
itemIDOld.getStoreditemCollection().remove(storeditem);
itemIDOld = em.merge(itemIDOld);
}
if (itemIDNew != null && !itemIDNew.equals(itemIDOld)) {
itemIDNew.getStoreditemCollection().add(storeditem);
itemIDNew = em.merge(itemIDNew);
}
if (inventoryOld != null && !inventoryOld.equals(inventoryNew)) {
inventoryOld.getStoreditemCollection().remove(storeditem);
inventoryOld = em.merge(inventoryOld);
}
if (inventoryNew != null && !inventoryNew.equals(inventoryOld)) {
inventoryNew.getStoreditemCollection().add(storeditem);
inventoryNew = em.merge(inventoryNew);
}
em.getTransaction().commit();
} catch (Exception ex) {
String msg = ex.getLocalizedMessage();
if (msg == null || msg.length() == 0) {
StoreditemPK id = storeditem.getStoreditemPK();
if (findStoreditem(id) == null) {
throw new NonexistentEntityException("The storeditem with id " + id + " no longer exists.");
}
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}
public void destroy(StoreditemPK id) throws NonexistentEntityException {
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Storeditem storeditem;
try {
storeditem = em.getReference(Storeditem.class, id);
storeditem.getStoreditemPK();
} catch (EntityNotFoundException enfe) {
throw new NonexistentEntityException("The storeditem with id " + id + " no longer exists.", enfe);
}
Item itemID = storeditem.getItemID();
if (itemID != null) {
itemID.getStoreditemCollection().remove(storeditem);
itemID = em.merge(itemID);
}
Inventory inventory = storeditem.getInventory();
if (inventory != null) {
inventory.getStoreditemCollection().remove(storeditem);
inventory = em.merge(inventory);
}
em.remove(storeditem);
em.getTransaction().commit();
} finally {
if (em != null) {
em.close();
}
}
}
public List<Storeditem> findStoreditemEntities() {
return findStoreditemEntities(true, -1, -1);
}
public List<Storeditem> findStoreditemEntities(int maxResults, int firstResult) {
return findStoreditemEntities(false, maxResults, firstResult);
}
private List<Storeditem> findStoreditemEntities(boolean all, int maxResults, int firstResult) {
EntityManager em = getEntityManager();
try {
CriteriaQuery cq = em.getCriteriaBuilder().createQuery();
cq.select(cq.from(Storeditem.class));
Query q = em.createQuery(cq);
if (!all) {
q.setMaxResults(maxResults);
q.setFirstResult(firstResult);
}
return q.getResultList();
} finally {
em.close();
}
}
public Storeditem findStoreditem(StoreditemPK id) {
EntityManager em = getEntityManager();
try {
return em.find(Storeditem.class, id);
} finally {
em.close();
}
}
public int getStoreditemCount() {
EntityManager em = getEntityManager();
try {
CriteriaQuery cq = em.getCriteriaBuilder().createQuery();
Root<Storeditem> rt = cq.from(Storeditem.class);
cq.select(em.getCriteriaBuilder().count(rt));
Query q = em.createQuery(cq);
return ((Long) q.getSingleResult()).intValue();
} finally {
em.close();
}
}
}