| 1. | Because hibernate doesn t know what specific class you re after , it has to read every column including the discriminator column , then determine which class to instantiate and , finally , populate it
因为hibernate不知道您要查询哪个特定的类，所以必须读取每个列（包括discriminator类） ，然后才能决定要初始化哪个类，最后再填充它。 |
