If the restructure involves moving things between attributes and nodes, you'll always need to cast the data into relational data types.
如果重构涉及属性和节点之间的转换，就需要将数据转换为关系数据类型。
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This means the structure of your objects is not tied to the structure of the XML — you can restructure your object classes without needing to change the XML format used for external data transfer.
The mashup hub can be used to transform (filter, restructure, sort) the data in creating an aggregated feed that is returned to the mashup application as an Atom feed.