public void put(String name, String value, String readPerm, String writePerm) {
SysConfig cfg;
if (prefix != null) name = prefix + name;
try {
boolean autoCommit = false;
Transaction tx = db.session().getTransaction();
if (tx == null || tx.getStatus().isNotOneOf(TransactionStatus.ACTIVE)) {
tx = db.session().beginTransaction();
autoCommit = true;
}
cfg = (SysConfig) db.session().get(SysConfig.class, name);
boolean saveIt = false;
if (cfg == null) {
cfg = new SysConfig();
cfg.setId(name);
saveIt = true;
}
cfg.setReadPerm(readPerm);
cfg.setWritePerm(writePerm);
cfg.setValue(value);
if (saveIt) db.session().save(cfg);
if (autoCommit) tx.commit();
} catch (HibernateException e) {
db.getLog().warn(e);
}
}
protected Transaction getTransaction() {
Transaction transaction = getSession().getTransaction();
if (transaction.getStatus() != TransactionStatus.ACTIVE) {
transaction.begin();
}
return transaction;
}
private void withStatelessSession() {
withBatch();
// tag::batch-stateless-session-example[]
StatelessSession statelessSession = null;
Transaction txn = null;
ScrollableResults scrollableResults = null;
try {
SessionFactory sessionFactory = entityManagerFactory().unwrap(SessionFactory.class);
statelessSession = sessionFactory.openStatelessSession();
txn = statelessSession.getTransaction();
txn.begin();
scrollableResults =
statelessSession.createQuery("select p from Person p").scroll(ScrollMode.FORWARD_ONLY);
while (scrollableResults.next()) {
Person Person = (Person) scrollableResults.get(0);
processPerson(Person);
statelessSession.update(Person);
}
txn.commit();
} catch (RuntimeException e) {
if (txn != null && txn.getStatus() == TransactionStatus.ACTIVE) txn.rollback();
throw e;
} finally {
if (scrollableResults != null) {
scrollableResults.close();
}
if (statelessSession != null) {
statelessSession.close();
}
}
// end::batch-stateless-session-example[]
}