EDBT '02 Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
XPath queries on streaming data
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Processing XPath queries with forward and downward axes over XML streams
Proceedings of the 13th International Conference on Extending Database Technology
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We show how the full XPath language can be compiled into a minimal subset suited for stream-based evaluation. Specifically, we show how XPath normalization into a core language as proposed in the current W3C ``Last Call'' draft of the XPath/XQuery Formal Semantics can be extended such that both the context state and reverse axes can be eliminated from the core XPath (and potentially XQuery) language. This allows execution of (almost) full XPath on any of the emerging streaming subsets.