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节点流和过滤流

节点流

节点流(Node Stream)是流管道两端直接连接data source和data destination上的,即为取放数据的真实载体,在流通道本身不对数据做任何加工,因而也被称为低级流。

过滤流

过滤流(Filter Stream)是套在节点流或过滤上的,而且过滤流是不能够脱离节点流(低级流)存在的,因此称为高级流。过滤流的流管道本身封装方法,能够对低级流数据进行处理,因此也被称为处理流。究其本质,过滤流就是把不符合通过管道条件的数据过滤掉,而让满足条件的数据通过过滤流管道。

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