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Conference papers

Compiling XPath into a State-less Forward-only Subset

Abstract : We show how the context state of XPath, accessed through the position() and last() pseudo-functions, can be eliminated in most cases by translating references to the context state with an equivalent contextfree expression, and how this enables the use of context state in combination with a subsequent forward-only transformation, allowing for execution of (almost) full XPath on any of the emerging streaming subsets. Specifically we show how the 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 the context state and reverse axes can be eliminated from the core XPath (and potentially XQuery) language.
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Submitted on : Friday, October 9, 2009 - 4:41:00 PM
Last modification on : Wednesday, April 6, 2022 - 3:48:08 PM
Long-term archiving on: : Tuesday, June 15, 2010 - 9:09:26 PM


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  • HAL Id : inria-00423382, version 1



Pierre Genevès, Kristoffer Rose. Compiling XPath into a State-less Forward-only Subset. First International Workshop on High Performance XML Processing, May 2004, New York, United States. ⟨inria-00423382⟩



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