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Posted to general@xml.apache.org by dl...@locus.apache.org on 2000/03/03 15:34:09 UTC
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dleslie 00/03/03 06:34:09
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<HTML><HEAD><SCRIPT language="JavaScript" src="resources/script.js" type="text/javascript"></SCRIPT><TITLE>Frequently asked questions</TITLE></HEAD><BODY alink="#ff0000" bgcolor="#ffffff" leftmargin="4" link="#0000ff" marginheight="4" marginwidth="4" text="#000000" topmargin="4" vlink="#0000aa"><TABLE border="0" cellpadding="0" cellspacing="0" width="620"><TR><TD align="left" height="60" rowspan="3" valign="top" width="135"><IMG border="0" height="60" hspace="0" src="resources/logo.gif" vspace="0" width="135"></TD><TD align="left" colspan="4" height="5" valign="top" width="456"><IMG border="0" height="5" hspace="0" src="resources/line.gif" vspace="0" width="456"></TD><TD align="left" height="60" rowspan="3" valign="top" width="29"><IMG border="0" height="60" hspace="0" src="resources/right.gif" vspace="0" width="29"></TD></TR><TR><TD align="left" bgcolor="#0086b2" colspan="4" height="35" valign="top" width="456"><IMG alt="" border="0" height="35" hspace="0" src="graphics/faq-header.jpg" vspace="0" width="4
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<IMG border="0" height="14" hspace="0" src="resources/close.gif" vspace="0" width="120"><BR></TD><TD align="left" valign="top" width="500"><TABLE border="0" cellpadding="3" cellspacing="0"><TR><TD><TABLE border="0" cellpadding="0" cellspacing="0" width="494"><TR><TD bgcolor="666699" colspan="2" width="494"><TABLE border="0" cellpadding="0" cellspacing="0" width="494"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="492"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="492"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="492"><FONT color="#ffffff" face="arial,helvetica,sanserif" size="+1"><IMG border="0" hei
ght="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>Questions</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="492"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="492"></TD><TD bgcolor="#017299" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10"> </TD><TD width="484"><FONT color="#000000" face="arial,helvetica,sanserif"><UL><LI><A href="#faq-1">Where do I go to learn about XSLT</A></LI><LI><A href="#faq-2">Which version of Xerces should I be using?</A></LI><LI><A href="#faq-3">Are there any shortcuts for using a transformation result as input for another transformation?</A></LI><LI><A href="#
faq-4">Why do XSLTProcessor and StylesheetRoot both have process() methods to perform transformations?</A></LI><LI><A href="#faq-5">What can I do to speed up transformations?</A></LI><LI><A href="#faq-6">I'm getting a NoClassDefFound error. What has to be on the class path?</A></LI><LI><A href="#faq-7">Stylesheet validation</A></LI></UL></FONT></TD></TR></TABLE><BR><TABLE border="0" cellpadding="0" cellspacing="0" width="494"><TR><TD bgcolor="666699" colspan="2" width="494"><TABLE border="0" cellpadding="0" cellspacing="0" width="494"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="492"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="492"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG border="0" height="1" hspace="0"
src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="492"><FONT color="#ffffff" face="arial,helvetica,sanserif" size="+1"><IMG border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>Answers</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="492"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="492"></TD><TD bgcolor="#017299" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10"> </TD><TD width="484"><FONT color="#000000" face="arial,helvetica,sanserif"><BR><A name="faq-1"><!--anchor--></A><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgc
olor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="482"><FONT color="#ffffff" face="arial,helvetica,sanserif"><IMG border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>Where do I go to learn about XSLT?</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" w
idth="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10"> </TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1"><P>The definitive sources are the W3C XSLT and XPath recommendations: <A href="http://www.w3.org/TR/xslt" target="_top">W3C Recommendation 16 November 1999 XSL Transformations (XSLT) Version 1.0</A> and
<A href="http://www.w3.org/TR/xpath" target="_top">XML Path Language (XPath) Version 1.0</A>.</P>
<P>For general questions not specific to Xalan, see Dave Pawson's <A href="http://freespace.virgin.net/b.pawson/xsl/index.html#top">XSL Frequently Asked Questions</A>.</P>
<P>For a brief listing of tutorials, discussion forums, and other materials, see <A href="overview.html#uptospeed">Getting up to speed with XSLT</A>.</P></FONT></TD></TR></TABLE><BR><A name="faq-2"><!--anchor--></A><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="482"><FONT color="#ffffff" face="arial,helvetica,sanserif"><IMG bo
rder="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>Which version of Xerces should I be using?</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10"> </TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1"><P>The Xalan release notes includes information about the Xerces release with which the Xalan release has
been coordinated and tested. See <A href="readme.html#status">Status</A></P></FONT></TD></TR></TABLE><BR><A name="faq-3"><!--anchor--></A><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="482"><FONT color="#ffffff" face="arial,helvetica,sanserif"><IMG border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2">
<B>Are there any shortcuts for using a transformation result as input for another transformation?</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10"> </TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1"><P>You can always get a transformation result from the <A href="" target="_top"></A> object,
and use it to set an <A href="apidocs/org/apache/xalan/xslt/XSLTInputSource.html" target="_top">XSLTInputSource class</A> object for another transformation, but yes, there is a
shortcut. Basically, you want to set up the XSLTResultTarget object
that receives the output from the first transformation (performed with the XML source, the first stylesheet, and the first
<A href="apidocs/org/apache/xalan/xslt/XSLTProcessor.html" target="_top">XSLTProcessor interface</A> object) to function as a SAX DocumentHandler in conjunction with a second
XSLTProcessor object that uses the second stylesheet and also functions as a DocumentHandler.</P>
<P>To walk through a brief example, see <A href="usagepatterns.html#sax">Generating and responding to
SAX events</A></P>.</FONT></TD></TR></TABLE><BR><A name="faq-4"><!--anchor--></A><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="482"><FONT color="#ffffff" face="arial,helvetica,sanserif"><IMG border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>Why do XSLTProcessor and StylesheetRoot both have proc
ess() methods to perform transformations?</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10"> </TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1"><P>To perform a transformation, Xalan uses XML input, an XSL stylesheet, and XSLTProcessor. In one scenario, you use
<A href="apidocs/org/apache/xalan/xslt/XSLTInputSource.html" target="_top">XSLTInputSource class</A> objects as containers for the XML input and the XSL stylesheet. To perform the
transformation, the <A href="apidocs/org/apache/xalan/xslt/XSLTProcessor.html" target="_top">XSLTProcessor interface</A> object "compiles" the stylesheet, producing a <A href="apidocs/org/apache/xalan/xslt/StylesheetRoot.html" target="_top">StylesheetRoot class</A> object, but you the user have no direct interaction with the StylesheetRoot.</P>
<P>Example:</P>
<DIV align="right"><TABLE border="0" cellpadding="0" cellspacing="4" width="464"><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" height="1" width="462"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="462"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#ffffff" width="462"><FONT size="-1"><PRE>import org.apache.xalan.xslt.*;
...
XSLTProcessor proc = XSLTProcessorFactory.getProcessor();
proc.process(new XSLTInputSource("foo.xml"),
new XSLTInputSource("foo.xsl"),
new XSLTOutputTarget("foo.out");</PRE></FONT></TD><TD bgcolor="#0086b2" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" height="1" width="462"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="462"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></DIV>
<P>Second scenario: you want to perform a number of transformations with the same stylesheet. To improve performance, you
compile the stylesheet once, and use the resulting <A href="apidocs/org/apache/xalan/xslt/StylesheetRoot.html" target="_top">StylesheetRoot class</A> object for each
transformation.</P>
<P>You can use the <A href="apidocs/org/apache/xalan/xslt/XSLTProcessor.html#process(org.apache.xalan.xslt.XSLTInputSource,org.apache.xalan.xslt.XSLTInputSource,org.apache.xalan.xslt.XSLTOutputTarget)">
XSLTProcessor process()</A> method with a compiled stylesheet. For an example, see <A href="usagepatterns.html#compiled">Compiling stylesheets</A>. But an XSLTProcessor object is not thread-safe and must be
reset between transformations. A StylesheetRoot object, on the other hand, is thread-safe and may even be used concurrently
(running in a servlet, for example) to perform multiple transformations, so it is more straightforward to use the
<A href="apidocs/org/apache/xalan/xslt/StylesheetRoot.html#process(org.apache.xalan.xslt.XSLTInputSource,org.apache.xalan.xslt.XSLTOutputTarget)">
StylesheetRoot process()</A> method to perform the transformations.</P>
<P>Example:</P>
<DIV align="right"><TABLE border="0" cellpadding="0" cellspacing="4" width="464"><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" height="1" width="462"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="462"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#ffffff" width="462"><FONT size="-1"><PRE>import org.apache.xalan.xslt.*;
...
// Pass in an array of XML input file names and an
// "uncompiled" stylesheet file name.
public multiTransform(String[] xmlInputFiles, String xslFile)
{
XSLTProcessor proc = XSLTProcessor.Factory.getProcessor();
StylesheetRoot style = proc.ProcessStylesheet
(new XSLTInputSource(xslFile));
for (int i = 0; i < xmlInputFiles.length; i++)
{
style.process(new XSLTInputSource(xmlInputFiles[i],
new XSLTResultTarget(xmlInputFiles[i] + ".out"));
}
}
...</PRE></FONT></TD><TD bgcolor="#0086b2" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" height="1" width="462"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="462"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></DIV>
</FONT></TD></TR></TABLE><BR><A name="faq-5"><!--anchor--></A><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="482"><FONT color="#ffffff" face="arial,helvetica,sanserif"><IMG border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>What can I do to speed up transformations?</B></FONT></TD><TD bgcolor=
"#017299" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10"> </TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1"><P>To be written.</P><UL>
<LI>Use the DTM liaison and XML parser.</LI>
<LI>Use compiled stylesheets.</LI>
<LI>Set the XSLTProcessor to function as a SAX DocumnetHandler, and respond to SAX events rather than waiting for
the entire transformation to be completed.</LI>
<LI>Set up your stylesheets to function efficiently.</LI>
</UL></FONT></TD></TR></TABLE><BR><A name="faq-6"><!--anchor--></A><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="482"><FONT color="#ffffff" face="arial,helvetica,sanserif"><IMG border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>I'm getting a NoClassDefFound error. What has to be on the class pat
h?</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10"> </TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1"><OL>
<LI>xalan.jar xerces.jar must always be on the class path.<BR><BR></LI>
<LI>As a general rule, xerces.jar must be on the class path. If you have set up an extension of <A href="" target="_top"></A> to work with another XML parser, all you need from xerces.jar are the serializers
and the implementation of the SAX 2 interface.<BR><BR></LI>
<LI>To run the samples in the samples subdirectories, xalansamples.jar must be on the class path. To run the servlet (in
samples/servlet), the javax.servlet and javax.servlet.http packages must also be on the class path. Sun distributes these
packages in the JSWDK 1.0.1 servlet.jar file.<BR><BR></LI>
<LI>To run extensions (including the samples in samples/extensions), bsf.jar, and bsfengines.jar must be on the
class path. To run extensions implemented in JavaScript, js.jar must also be on the class path. For information on what
you need to run extensions implemented in other scripting languages, see <A href="extensions.html#supported-lang">Supported languages</A>.<BR><BR></LI>
</OL>
<P>For more information, see <A href="getstarted.html#classpath">Setting up the system class path</A>.</P></FONT></TD></TR></TABLE><BR><A name="faq-7"><!--anchor--></A><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="484"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="482"><FONT color="#ffffff" face="arial,helvetica,sanserif"><IMG border="0" height="2" hspace="0" src="resources/v
oid.gif" vspace="0" width="2"><B>How do I validate an XSL stylesheet?</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#0086b2" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10"> </TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1">
<P>An XSL stylesheet is an XML document, so it can have a DOCTYPE and be subject to validation, right? </P>
<P>The XSLT Recommendation includes a <A href="http://www.w3.org/TR/xslt#dtd">DTD Fragment
for XSL Stylesheets</A> with some indications of what you need to do to create a complete DTD for a given
stylesheet. Keep in mind that stylesheets can include literal result elements and produce output that is not valid
XML.</P>
<P>You can use the xsl:stylesheet doctype defined in xsl-html40s.dtd for stylesheets that generate HTML.</P>
</FONT></TD></TR></TABLE><BR></FONT></TD></TR></TABLE><BR></TD></TR></TABLE></TD></TR></TABLE><BR><TABLE border="0" cellpadding="0" cellspacing="0" width="620"><TR><TD bgcolor="#0086b2"><IMG height="1" src="images/dot.gif" width="1"></TD></TR><TR><TD align="center"><FONT color="#0086b2" size="-1"><I>
Copyright © 2000 The Apache Software Foundation.
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