DefaultBaseDao.java 文件源码

/**
 * Inserts a new instance in the database.
 *
 * @param obj The object to create.
 * @return The instance with ID.
 */
@Override
public <T extends BaseEntity> T create(final T obj) {
    try {
        em.getTransaction().begin();
        em.persist(obj);
        em.getTransaction().commit();
        return obj;
    } catch (final PersistenceException ex) {
        throw convertRollbackToConflict(ex);
    }
}