public void edit(Inventary inventary) throws NonexistentEntityException, Exception {
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Inventary persistentInventary = em.find(Inventary.class, inventary.getId());
Product productIdOld = persistentInventary.getProductId();
Product productIdNew = inventary.getProductId();
Billing billingIdOld = persistentInventary.getBillingId();
Billing billingIdNew = inventary.getBillingId();
if (productIdNew != null) {
productIdNew = em.getReference(productIdNew.getClass(), productIdNew.getId());
inventary.setProductId(productIdNew);
}
if (billingIdNew != null) {
billingIdNew = em.getReference(billingIdNew.getClass(), billingIdNew.getId());
inventary.setBillingId(billingIdNew);
}
inventary = em.merge(inventary);
if (productIdOld != null && !productIdOld.equals(productIdNew)) {
productIdOld.getInventaryList().remove(inventary);
productIdOld = em.merge(productIdOld);
}
if (productIdNew != null && !productIdNew.equals(productIdOld)) {
productIdNew.getInventaryList().add(inventary);
productIdNew = em.merge(productIdNew);
}
if (billingIdOld != null && !billingIdOld.equals(billingIdNew)) {
billingIdOld.getInventaryList().remove(inventary);
billingIdOld = em.merge(billingIdOld);
}
if (billingIdNew != null && !billingIdNew.equals(billingIdOld)) {
billingIdNew.getInventaryList().add(inventary);
billingIdNew = em.merge(billingIdNew);
}
em.getTransaction().commit();
} catch (Exception ex) {
String msg = ex.getLocalizedMessage();
if (msg == null || msg.length() == 0) {
Integer id = inventary.getId();
if (findInventary(id) == null) {
throw new NonexistentEntityException(
"The inventary with id " + id + " no longer exists.");
}
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}
public void create(Inventary inventary) throws PreexistingEntityException, Exception {
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Product productId = inventary.getProductId();
if (productId != null) {
productId = em.getReference(productId.getClass(), productId.getId());
inventary.setProductId(productId);
}
Billing billingId = inventary.getBillingId();
if (billingId != null) {
billingId = em.getReference(billingId.getClass(), billingId.getId());
inventary.setBillingId(billingId);
}
em.persist(inventary);
if (productId != null) {
productId.getInventaryList().add(inventary);
productId = em.merge(productId);
}
if (billingId != null) {
billingId.getInventaryList().add(inventary);
billingId = em.merge(billingId);
}
em.getTransaction().commit();
} catch (Exception ex) {
if (findInventary(inventary.getId()) != null) {
throw new PreexistingEntityException("Inventary " + inventary + " already exists.", ex);
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}