document: Compiling XSLT 2.0 into XQuery 1.0 As XQuery is gathering momentum as the standard query language for XML , there is a growing interest in using it as an integral part of the XML application development infrastructure . In that context , one question which is often raised is how well XQuery interoperates with other XML languages , and notably with XSLT . XQuery 1.0 ( 16 ) and XSLT 2.0 ( 7 ) share a lot in common : they share XPath 2.0 as a common sub-language and have the same expressiveness . However , they are based on fairly different programming paradigms . While XSLT has adopted a highly declarative template based approach , XQuery relies on a simpler , and more operational , functional approach . In this paper , we present an approach to compile XSLT 2.0 into XQuery 1.0 , and a working implementation of that approach . The compilation rules explain how XSLT 's template-based approach can be implemented using the functional approach of XQuery and underpins the tight connection between the two languages . The resulting compiler can be used to migrate a XSLT code base to XQuery , or to enable the use of XQuery runtimes ( e.g. , as will soon be provided by most relational database management systems ) for XSLT users . We also identify a number of areas where compatibility between the two languages could be improved . Finally , we show experiments on actual XSLT stylesheets , demonstrating the applicability of the approach in practice .
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