You can't propose lofty goals without specifying the nuts and bolts of how they are to be achieved.你不能只提议高远的目标而不明确指出如何达成的具体细节。When we describe what the action will affect, we are specifying the noun of the sentence.当描述动作会影响到什么时，我们指定组成句子的名词。Therefore, you need another mechanism of specifying the business object to the data handler.因此，您需要能将业务对象指定到数据处理器的另一个机制。