@Override
public boolean approveElective(int[] electiveIds) {
try {
for (int id : electiveIds) {
Elective elective = entityManager.find(Elective.class, id);
if (elective == null) {
return false;
}
elective.setProposed("1");
entityManager.persist(elective);
}
} catch (EntityExistsException e) {
e.printStackTrace();
entityManager.getTransaction().rollback();
return false;
} catch (IllegalArgumentException e) {
e.printStackTrace();
entityManager.getTransaction().rollback();
return false;
} catch (TransactionRequiredException e) {
e.printStackTrace();
entityManager.getTransaction().rollback();
return false;
}
return true;
}
@Override
public boolean setTaughtElectives(int[] electiveId) {
// entityManager.getTransaction().begin();
for (int i : electiveId) {
Elective ele = entityManager.find(Elective.class, i);
ele.setTaught((short) 1);
try {
entityManager.persist(ele);
} catch (EntityExistsException e) {
e.printStackTrace();
return false;
} catch (IllegalArgumentException e) {
e.printStackTrace();
return false;
} catch (TransactionRequiredException e) {
e.printStackTrace();
return false;
}
}
// try {
// entityManager.getTransaction().commit();
// } catch (RollbackException e) {
// e.printStackTrace();
// return false;
// }
return true;
}
public <T extends BaseDto> void delete(T entity) throws DaoException {
startTxn();
try {
getEntityManager().remove(entity);
getEntityManager().getTransaction().commit();
} catch (IllegalArgumentException e) {
getEntityManager().getTransaction().rollback();
e.printStackTrace();
throw new DaoException("Create Failed: " + e.getMessage());
} catch (TransactionRequiredException e) {
getEntityManager().getTransaction().rollback();
e.printStackTrace();
throw new DaoException("Update Failed: " + e.getMessage());
}
}
public <T extends BaseDto> void delete(Class<T> entityClass, Object[] entityids)
throws DaoException {
for (Object id : entityids) {
startTxn();
// getEntityManager().remove(getEntityManager().find(entityClass, id));
try {
getEntityManager().remove(getEntityManager().find(entityClass, id));
getEntityManager().getTransaction().commit();
} catch (IllegalArgumentException e) {
getEntityManager().getTransaction().rollback();
e.printStackTrace();
throw new DaoException("Create Failed: " + e.getMessage());
} catch (TransactionRequiredException e) {
getEntityManager().getTransaction().rollback();
e.printStackTrace();
throw new DaoException("Update Failed: " + e.getMessage());
}
}
}
public <T extends BaseDto> void update(T entity) throws DaoException {
startTxn();
try {
getEntityManager().merge(entity);
// getEntityManager().flush();
getEntityManager().getTransaction().commit();
} catch (TransactionRequiredException e) {
getEntityManager().getTransaction().rollback();
e.printStackTrace();
throw new DaoException("Update Failed: " + e.getMessage());
} catch (PersistenceException e) {
getEntityManager().getTransaction().rollback();
e.printStackTrace();
throw new DaoException("Update Failed: " + e.getMessage());
} catch (Exception e) {
getEntityManager().getTransaction().rollback();
e.printStackTrace();
throw new DaoException("Update Failed: " + e.getMessage());
}
}
@Override
public boolean removeElective(int electiveId) {
try {
Elective elective = entityManager.find(Elective.class, electiveId);
if (elective != null) {
entityManager.remove(elective);
entityManager.flush();
return true;
}
} catch (IllegalArgumentException ex) {
ex.printStackTrace();
return false;
} catch (TransactionRequiredException ex) {
ex.printStackTrace();
return false;
}
return false;
}
@Override
public boolean addElective(ElectiveDTO e) {
Elective el =
new Elective(
e.getElectiveID(), e.getTitle(), e.getDescription(), new Date(), e.getProposed());
try {
entityManager.persist(el);
} catch (EntityExistsException ex) {
ex.printStackTrace();
return false;
} catch (IllegalArgumentException ex) {
ex.printStackTrace();
return false;
} catch (TransactionRequiredException ex) {
ex.printStackTrace();
return false;
}
return true;
}
