Appendix G. Altova
Altova is the company that produces the popular XMLSpy toolkit. Among its many capabilities this includes an XSLT 2.0 processor, which can be used either as part of XMLSpy or on its own from the command line or via one of a number of application programming interfaces. XMLSpy is commercial software that can be purchased from www.altova.com.
Altova's XSLT 2.0 processor is available as a free (but not open source) download from the same site — it is part of a package called AltovaXML that also includes an XML validating parser, an XML Schema processor, an XQuery engine, and an XSLT 1.0 processor. The XQuery and XSLT 2.0 processors are both schema-aware. Although the product is internally a COM component, APIs are offered for COM, Java, and .NET.
As well as the XSLT 2.0 processor itself, XMLSpy also includes an interactive XSLT debugger and a profiler for performance analysis.
Both products run on Windows only. The version described in this chapter is the 2008 edition.
Running from within XMLSpy
An example showing how to run a simple "Hello World" stylesheet from within XMLSpy was given in Chapter 1 (see page 11).
Remember that XMLSpy includes both an XSLT 1.0 and an XSLT 2.0 processor, and the one it uses depends on the «version» attribute in your <xsl:stylesheet> element. If you are writing an XSLT 2.0 stylesheet and you get error messages referring to unrecognized functions or instructions, check that you haven't inadvertently specified «version="1.0"».
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