XPathMark: Functional and Performance Tests for XPath

We present a major revision of the XPath benchmark known as XPathMark [1]. The new version splits into a functional test over a small educational document and a more elaborated performance test over XMark [2] documents. We conclude by sharing with the reader our experience on running XPathMark on some popular XSLT/XQuery processors. 1 Functional and Performance Tests for XPath The new release of XPathMark [3] consists of a functional and performance test for the XPath language version 1.0. 1.1 XPath Functional Test The main goal of XPath Functional Test (XPath-FT ) is testing completeness (which features of the language are supported?) and correctness (which features of the language are correctly implemented?) of an XML query processing system with respect to XPath 1.0. XPath-FT contains several groups of queries each covering a different functional aspect of the language including navigational axes, filters, node tests, operators and functions. The queries are interpreted over a small educational document and each query is accompanied with the correct answer. The skeleton of the target XML document, depicted in Figure 1, rapresents the English alphabet in such a way that the preorder traversal of the XML tree corresponds to the English alphabet sorted from A to Z. As an example of the query set, we report four queries in the axes group along with their answers in graphical format (see red nodes in Figure 2): A3 The descendant nodes of L (Answer: Figure 2 top-left) //L/descendant::* A5 The ancestor nodes of L (Answer: Figure 2 top-right) //L/ancestor::* A9 The following nodes of L (Answer: Figure 2 bottom-left) Dagstuhl Seminar Proceedings 06472 XQuery Implementation Paradigms http://drops.dagstuhl.de/opus/volltexte/2007/892