IBM Version 5 manual Xslt compilers Xsltc, Xslt interpreters

For more detail, visit XQuery 1.0: An XML Query Language ( April 2002 ) at:

http://www.w3.org/TR/xquery/

XQuery: A Query Language for XML (Feb 2002) at:

http://www.w3.org/TR/2001/WD-xquery-20010215/#section-Introduction

2.9 XSLT compilers (XSLTC)

As the use of XML documents climbs, so will the use of XSL transformations increase. For any project, this increase will not only be in terms of the number of transformations required, but also in the size of each transformation. There are a number of XSLT engines on the market today, but these are all interpreters (Figure 2-1).

Transformations are generally static and can be used multiple times over different XML documents. If these transformations could be pre-compiled, we would realize performance levels in speed and for memory (Figure 2-2).

Java classes that offer translation capabilities are called translets. Translets can offer significant speed in server-side transformations, and also the possibility of client-side transformation of XML into other formats. Translets are expected to be small, in the 100 Kilobytes range.

	XSLT
	stylesheet
	<xsl:template match="Customer">
	<h1>Input XML Form</h1>
	<form action="/Travel/CustomerXSLServlet" method="post">
	<table border="0" cellpadding="2" cellspacing="0">
	<xsl:apply-templates select="firstname"/>
	</table>
	</form>
	</xsl:template>
	Output
XML input	XML,
	HTML, etc
file
	XSLT processor

Figure 2-1 XSLT interpreters

Chapter 2. Technologies in XML 47