XPath 2.0 Programmer's Reference Paperback – Aug 27 2004
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From the Back Cover
From its origins as a sublanguage of XSLT, XPath has come into its own as a key element of XML. XPath 2.0 has emerged as a robust language twice the size of its predecessor, complex and capable of standing on its own.
This substantive volume, by the editor of the W3C® XSLT 2.0 specification, is the authoritative reference on XPath 2.0. It begins by thoroughly explaining the foundations, including XML schema and the evaluation context. Building on this knowledge, it then moves through literals and function calls, basic operators, path expressions, types, and the regular expressions of three new functions that greatly boost the power of XPath 2.0.
What you will learn from this book
- Top-level constructs and the lexical rules for using whitespace and comments
- Basic operators for writing arithmetic and Boolean expressions
- Three operators for combining the results of path expressions: union, intersect, and except
- How XPath 2.0 supports sequences
- Where to access a complete listing of all functions in the core function library
- How to define the syntax of XPath regular expressions as used in the new functions matches(), replace(), and tokenize(), and much more
Who this book is for
This book is for experienced programmers who use XPath 2.0 and want a comprehensive understanding of it at every level. A basic knowledge of XML and Web architecture is essential.
Wrox Programmers References are designed to give the experienced developer straight facts on a new technology, without hype or unnecessary explanations. They deliver hard information with plenty of practical examples to help you apply new tools to your development projects today.
About the Author
Michael Kay has been working in the XML field since 1997; he became a member of the XSLWorking Group soon after the publication of XSLT 1.0, and took over as editor of the XSLT 2.0 specification in early 2001. He is also a member of the XQueryWorking Group, and is a joint editor of the XPath 2.0 specification. He is well known not only through previous editions of this book, but also as the developer of the open-source Saxon product, a pioneering implementation of XSLT 2.0, XPath 2.0, and XQuery 1.0.
The author has recently formed his own company, Saxonica, to provide commercial software and services building on the success of the Saxon technology. Previously, he spent three years with Software AG, working with the developers of the Tamino XML server, a leading XQuery implementation. His background is in database technology: after leaving the University of Cambridge with a Ph.D., he worked for many years with the (then) computer manufacturer ICL, developing network, relational, and object-oriented database software products as well as a text search engine, and held the position of ICL Fellow.
Most Helpful Customer Reviews on Amazon.com (beta)
However, this book (and its companion XSLT reference) is perhaps the worst-formatted reference book I have ever seen. Much of the book consists of an alphabetical reference of XPath functions. Unfortunately, the page headers and footers only contain page numbers and chapter titles. They do not contain the name of the function that is described on that page. So you can't just riff through the pages watching for your function to appear in the footer.
There is a heading for each function name, but the font used for the sub-headings are as large as (if not larger than) the major headings. There are no page breaks between functions. So you can't even visually scan the pages looking for your functions.
Finally, the table of contents consists largely of function names on the left, with page numbers on the right, separated by about five inches. But there are no dot leaders between them. So, even when you resort to using the table of contents to find the section you need, you have to use a ruler to find the page number.
The book is not a tutorial, but instead aims at complete and detailed coverage and describing the differences between 1.0 and 2.0.
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