XPath: Looking Forward

  • Authors:
  • Dan Olteanu;Holger Meuss;Tim Furche;François Bry

  • Affiliations:
  • -;-;-;-

  • Venue:
  • EDBT '02 Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
  • Year:
  • 2002

Quantified Score

Hi-index 0.00

Visualization

Abstract

The location path language XPath is of particular importance for XML applications since it is a core component of many XML processing standards such as XSLT or XQuery. In this paper, based on axis symmetry of XPath, equivalences of XPath 1.0 location paths involving reverse axes, such as anc and prec, are established. These equivalences are used as rewriting rules in an algorithm for transforming location paths with reverse axes into equivalent reverse-axis-free ones. Location paths without reverse axes, as generated by the presented rewriting algorithm, enable efficient SAX-like streamed data processing of XPath.