我无法在没有事务的情况下将我的实体数据保存到数据库中。我知道 PersistenceContextType.Extend,但我无法成功。
@NoTransaction
public class Application extends Controller {
public static void create(String body) {
// EntityTransaction tm = JPA.em().getTransaction();
if (!JPA.isEnabled()) {
System.out.println("JPA is not initialized");
}
EntityManager manager = JPA.entityManagerFactory.createEntityManager();
//manager.setFlushMode(FlushModeType.COMMIT);
manager.setProperty("org.hibernate.readOnly", false);
//new Customer("001").save();
if (!JPA.isInsideTransaction()) {
// manager.getTransaction().begin();
}
createContext(manager, false);
new Customer("001").save();
//manager.getTransaction().commit();
/*
* if (tm.equals(null)) { System.out.println("success"); }
*/
}
static void createContext(EntityManager entityManager, boolean readonly) {
if (JPA.local.get() != null) {
try {
JPA.local.get().entityManager.close();
} catch (Exception e) {
// Let's it fail
}
JPA.local.remove();
}
JPA context = new JPA();
context.entityManager = entityManager;
// context.readonly = readonly;
JPA.local.set(context);
}
}
我自己初始化了 JPA 以防止 play 开始交易。我想将数据保存到数据库中,但出现 TransactionRequiredException 错误。我知道JPA操作需要一个事务,但我想知道是否有异常。