<HTML><HEAD><SCRIPT language="JavaScript" src="resources/script.js" type="text/javascript"></SCRIPT><TITLE>XSLTC Documentation</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 alt="logo" 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 alt="line" 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 alt="right" 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/index-header.jpg" vspace="0" width="456"></TD></TR><TR><TD align="left" height="20" valign="top" width="168"><IMG alt="bottom" border="0" height="20" hspace="0" src="resources/bottom.gif" vspace="0" width="168"></TD><TD align="left" height="20" valign="top" width="96"><A href="http://xml.apache.org/" onMouseOut="rolloverOff('xml');" onMouseOver="rolloverOn('xml');" target="new"><IMG alt="http://xml.apache.org/" border="0" height="20" hspace="0" name="xml" onLoad="rolloverLoad('xml','resources/button-xml-hi.gif','resources/button-xml-lo.gif');" src="resources/button-xml-lo.gif" vspace="0" width="96"></A></TD><TD align="left" height="20" valign="top" width="96"><A href="http://www.apache.org/" onMouseOut="rolloverOff('asf');" onMouseOver="rolloverOn('asf');" target="new"><IMG alt="http://www.apache.org/" border="0" height="20" hspace="0" name="asf" onLoad="rolloverLoad('asf','resources/button-asf-hi.gif','resources/button-asf-lo.gif');" src="resources/button-asf-lo.gif" vspace="0" width="96"></A></TD><TD align="left" height="20" valign="top" width="96"><A href="http://www.w3.org/" onMouseOut="rolloverOff('w3c');" onMouseOver="rolloverOn('w3c');" target="new"><IMG alt="http://www.w3.org/" border="0" height="20" hspace="0" name="w3c" onLoad="rolloverLoad('w3c','resources/button-w3c-hi.gif','resources/button-w3c-lo.gif');" src="resources/button-w3c-lo.gif" vspace="0" width="96"></A></TD></TR></TABLE><TABLE border="0" cellpadding="0" cellspacing="0" width="620"><TR><TD align="left" valign="top" width="120"><IMG alt="join" border="0" height="14" hspace="0" src="resources/join.gif" vspace="0" width="120"><BR>
 
  <IMG alt="Overview" border="0" height="12" hspace="0" src="graphics/index-label-1.jpg" vspace="0" width="120"><BR>

 <IMG alt="separator" border="0" height="6" hspace="0" src="resources/separator.gif" vspace="0" width="120"><BR>

  <A href="xsltc_compiler.html" onMouseOut="rolloverOff('side-xsltc_compiler');" onMouseOver="rolloverOn('side-xsltc_compiler');"><IMG alt="Compiler design" border="0" height="12" hspace="0" name="side-xsltc_compiler" onLoad="rolloverLoad('side-xsltc_compiler','graphics/xsltc_compiler-label-2.jpg','graphics/xsltc_compiler-label-3.jpg');" src="graphics/xsltc_compiler-label-3.jpg" vspace="0" width="120"></A><BR>

 <IMG alt="separator" border="0" height="6" hspace="0" src="resources/separator.gif" vspace="0" width="120"><BR>
 
   <A href="xsl_whitespace_design.html" onMouseOut="rolloverOff('side-xsl_whitespace_design');" onMouseOver="rolloverOn('side-xsl_whitespace_design');"><IMG alt="Whitespace" border="0" height="12" hspace="0" name="side-xsl_whitespace_design" onLoad="rolloverLoad('side-xsl_whitespace_design','graphics/xsl_whitespace_design-label-2.jpg','graphics/xsl_whitespace_design-label-3.jpg');" src="graphics/xsl_whitespace_design-label-3.jpg" vspace="0" width="120"></A><BR>

  <A href="xsl_sort_design.html" onMouseOut="rolloverOff('side-xsl_sort_design');" onMouseOver="rolloverOn('side-xsl_sort_design');"><IMG alt="xsl:sort" border="0" height="12" hspace="0" name="side-xsl_sort_design" onLoad="rolloverLoad('side-xsl_sort_design','graphics/xsl_sort_design-label-2.jpg','graphics/xsl_sort_design-label-3.jpg');" src="graphics/xsl_sort_design-label-3.jpg" vspace="0" width="120"></A><BR> 

  <A href="xsl_key_design.html" onMouseOut="rolloverOff('side-xsl_key_design');" onMouseOver="rolloverOn('side-xsl_key_design');"><IMG alt="Keys" border="0" height="12" hspace="0" name="side-xsl_key_design" onLoad="rolloverLoad('side-xsl_key_design','graphics/xsl_key_design-label-2.jpg','graphics/xsl_key_design-label-3.jpg');" src="graphics/xsl_key_design-label-3.jpg" vspace="0" width="120"></A><BR> 

  <A href="xsl_comment_design.html" onMouseOut="rolloverOff('side-xsl_comment_design');" onMouseOver="rolloverOn('side-xsl_comment_design');"><IMG alt="Comment design" border="0" height="12" hspace="0" name="side-xsl_comment_design" onLoad="rolloverLoad('side-xsl_comment_design','graphics/xsl_comment_design-label-2.jpg','graphics/xsl_comment_design-label-3.jpg');" src="graphics/xsl_comment_design-label-3.jpg" vspace="0" width="120"></A><BR>
 
  <IMG alt="separator" border="0" height="6" hspace="0" src="resources/separator.gif" vspace="0" width="120"><BR>

  <A href="xsl_lang_design.html" onMouseOut="rolloverOff('side-xsl_lang_design');" onMouseOver="rolloverOn('side-xsl_lang_design');"><IMG alt="lang()" border="0" height="12" hspace="0" name="side-xsl_lang_design" onLoad="rolloverLoad('side-xsl_lang_design','graphics/xsl_lang_design-label-2.jpg','graphics/xsl_lang_design-label-3.jpg');" src="graphics/xsl_lang_design-label-3.jpg" vspace="0" width="120"></A><BR> 

  <A href="xsl_unparsed_design.html" onMouseOut="rolloverOff('side-xsl_unparsed_design');" onMouseOver="rolloverOn('side-xsl_unparsed_design');"><IMG alt="Unparsed entities" border="0" height="12" hspace="0" name="side-xsl_unparsed_design" onLoad="rolloverLoad('side-xsl_unparsed_design','graphics/xsl_unparsed_design-label-2.jpg','graphics/xsl_unparsed_design-label-3.jpg');" src="graphics/xsl_unparsed_design-label-3.jpg" vspace="0" width="120"></A><BR> 
  
 <IMG alt="separator" border="0" height="6" hspace="0" src="resources/separator.gif" vspace="0" width="120"><BR>
  <A href="xsl_if_design.html" onMouseOut="rolloverOff('side-xsl_if_design');" onMouseOver="rolloverOn('side-xsl_if_design');"><IMG alt="If design" border="0" height="12" hspace="0" name="side-xsl_if_design" onLoad="rolloverLoad('side-xsl_if_design','graphics/xsl_if_design-label-2.jpg','graphics/xsl_if_design-label-3.jpg');" src="graphics/xsl_if_design-label-3.jpg" vspace="0" width="120"></A><BR> 
  <A href="xsl_choose_design.html" onMouseOut="rolloverOff('side-xsl_choose_design');" onMouseOver="rolloverOn('side-xsl_choose_design');"><IMG alt="Choose|When|Otherwise design" border="0" height="12" hspace="0" name="side-xsl_choose_design" onLoad="rolloverLoad('side-xsl_choose_design','graphics/xsl_choose_design-label-2.jpg','graphics/xsl_choose_design-label-3.jpg');" src="graphics/xsl_choose_design-label-3.jpg" vspace="0" width="120"></A><BR> 
  <A href="xsl_include_design.html" onMouseOut="rolloverOff('side-xsl_include_design');" onMouseOver="rolloverOn('side-xsl_include_design');"><IMG alt="Include|Import design" border="0" height="12" hspace="0" name="side-xsl_include_design" onLoad="rolloverLoad('side-xsl_include_design','graphics/xsl_include_design-label-2.jpg','graphics/xsl_include_design-label-3.jpg');" src="graphics/xsl_include_design-label-3.jpg" vspace="0" width="120"></A><BR> 
  <A href="xsl_variable_design.html" onMouseOut="rolloverOff('side-xsl_variable_design');" onMouseOver="rolloverOn('side-xsl_variable_design');"><IMG alt="Variable|Param design" border="0" height="12" hspace="0" name="side-xsl_variable_design" onLoad="rolloverLoad('side-xsl_variable_design','graphics/xsl_variable_design-label-2.jpg','graphics/xsl_variable_design-label-3.jpg');" src="graphics/xsl_variable_design-label-3.jpg" vspace="0" width="120"></A><BR> 

 <IMG alt="separator" border="0" height="6" hspace="0" src="resources/separator.gif" vspace="0" width="120"><BR>
   
  <A href="xsltc_runtime.html" onMouseOut="rolloverOff('side-xsltc_runtime');" onMouseOver="rolloverOn('side-xsltc_runtime');"><IMG alt="Runtime" border="0" height="12" hspace="0" name="side-xsltc_runtime" onLoad="rolloverLoad('side-xsltc_runtime','graphics/xsltc_runtime-label-2.jpg','graphics/xsltc_runtime-label-3.jpg');" src="graphics/xsltc_runtime-label-3.jpg" vspace="0" width="120"></A><BR> 
            
 <IMG alt="separator" border="0" height="6" hspace="0" src="resources/separator.gif" vspace="0" width="120"><BR>

  <A href="xsltc_dom.html" onMouseOut="rolloverOff('side-xsltc_dom');" onMouseOver="rolloverOn('side-xsltc_dom');"><IMG alt="Internal DOM" border="0" height="12" hspace="0" name="side-xsltc_dom" onLoad="rolloverLoad('side-xsltc_dom','graphics/xsltc_dom-label-2.jpg','graphics/xsltc_dom-label-3.jpg');" src="graphics/xsltc_dom-label-3.jpg" vspace="0" width="120"></A><BR>            
            
  <A href="xsltc_namespace.html" onMouseOut="rolloverOff('side-xsltc_namespace');" onMouseOver="rolloverOn('side-xsltc_namespace');"><IMG alt="Namespaces" border="0" height="12" hspace="0" name="side-xsltc_namespace" onLoad="rolloverLoad('side-xsltc_namespace','graphics/xsltc_namespace-label-2.jpg','graphics/xsltc_namespace-label-3.jpg');" src="graphics/xsltc_namespace-label-3.jpg" vspace="0" width="120"></A><BR>             
            
 <IMG alt="separator" border="0" height="6" hspace="0" src="resources/separator.gif" vspace="0" width="120"><BR>
 
   <A href="xsltc_trax.html" onMouseOut="rolloverOff('side-xsltc_trax');" onMouseOver="rolloverOn('side-xsltc_trax');"><IMG alt="Translet & TrAX" border="0" height="12" hspace="0" name="side-xsltc_trax" onLoad="rolloverLoad('side-xsltc_trax','graphics/xsltc_trax-label-2.jpg','graphics/xsltc_trax-label-3.jpg');" src="graphics/xsltc_trax-label-3.jpg" vspace="0" width="120"></A><BR>
   <A href="xsltc_predicates.html" onMouseOut="rolloverOff('side-xsltc_predicates');" onMouseOver="rolloverOn('side-xsltc_predicates');"><IMG alt="XPath Predicates" border="0" height="12" hspace="0" name="side-xsltc_predicates" onLoad="rolloverLoad('side-xsltc_predicates','graphics/xsltc_predicates-label-2.jpg','graphics/xsltc_predicates-label-3.jpg');" src="graphics/xsltc_predicates-label-3.jpg" vspace="0" width="120"></A><BR>
   <A href="xsltc_iterators.html" onMouseOut="rolloverOff('side-xsltc_iterators');" onMouseOver="rolloverOn('side-xsltc_iterators');"><IMG alt="Xsltc Iterators" border="0" height="12" hspace="0" name="side-xsltc_iterators" onLoad="rolloverLoad('side-xsltc_iterators','graphics/xsltc_iterators-label-2.jpg','graphics/xsltc_iterators-label-3.jpg');" src="graphics/xsltc_iterators-label-3.jpg" vspace="0" width="120"></A><BR>
   <A href="xsltc_native_api.html" onMouseOut="rolloverOff('side-xsltc_native_api');" onMouseOver="rolloverOn('side-xsltc_native_api');"><IMG alt="Xsltc Native API" border="0" height="12" hspace="0" name="side-xsltc_native_api" onLoad="rolloverLoad('side-xsltc_native_api','graphics/xsltc_native_api-label-2.jpg','graphics/xsltc_native_api-label-3.jpg');" src="graphics/xsltc_native_api-label-3.jpg" vspace="0" width="120"></A><BR>
   <A href="xsltc_trax_api.html" onMouseOut="rolloverOff('side-xsltc_trax_api');" onMouseOver="rolloverOn('side-xsltc_trax_api');"><IMG alt="Xsltc TrAX API" border="0" height="12" hspace="0" name="side-xsltc_trax_api" onLoad="rolloverLoad('side-xsltc_trax_api','graphics/xsltc_trax_api-label-2.jpg','graphics/xsltc_trax_api-label-3.jpg');" src="graphics/xsltc_trax_api-label-3.jpg" vspace="0" width="120"></A><BR>
   <A href="xsltc_performance.html" onMouseOut="rolloverOff('side-xsltc_performance');" onMouseOver="rolloverOn('side-xsltc_performance');"><IMG alt="Performance Hints" border="0" height="12" hspace="0" name="side-xsltc_performance" onLoad="rolloverLoad('side-xsltc_performance','graphics/xsltc_performance-label-2.jpg','graphics/xsltc_performance-label-3.jpg');" src="graphics/xsltc_performance-label-3.jpg" vspace="0" width="120"></A><BR>            
<IMG alt="close" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="492"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="492"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" 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 alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>User Documentation</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="492"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="492"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="484"><FONT color="#000000" face="arial,helvetica,sanserif">
    <P>The following user documentation is currently available:</P>
    <UL>
      <LI>Command-line <A href="README.xsltc">compiler</A> and
      <A href="README.xslt">runtime</A> man pages.</LI>
      <LI><A href="xsltc_native_api.html">XSLTC Native API reference</A></LI>
      <LI><A href="xsltc_trax_api.html">XSLTC TrAX API reference</A></LI>
      <LI><A href="xsltc_performance.html">XSLTC Performance Hints</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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="492"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="492"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" 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 alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>Design Documents</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="492"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="492"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="484"><FONT color="#000000" face="arial,helvetica,sanserif">
    <P>The following design documents are currently available:</P>
    <UL>
      <LI><A href="#overall">XSLTC overall design</A></LI>
      <LI><A href="#compiler">XSLTC compiler design</A></LI>
      <LI><A href="#runtime">XSLTC runtime library design</A></LI>
      <LI><A href="#runtime">XSLTC internal DOM design</A></LI>
      <LI><A href="#trax">XSLTC TrAX implementation design</A></LI>
    </UL>


    <A name="overall"><!--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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" 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 alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>XSLTC overall design</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1">

    <P>The figure below describes the overall design of XSLTC's compiler:</P>
    <P><IMG align="right" alt="overall_design.gif" border="0" hspace="4" src="images/overall_design.gif" vspace="4"><BR clear="all"></P>
    <P><I>Figure 1: Architectural overview of XSLTC</I></P>

    <P>A client application can use XSLTC either through its
    <A href="xsltc_native_api.html">native API</A> or through or
    implementation of the <A href="xsltc_trax_api.html">TrAX API</A>. The
    <A href="#compiler">compiler</A> generates one or more Java classes
    (we have chosen to call them 'translets').
    The <A href="#runtime">runtime library</A> contains classes that
    can load these translets and use them to transform XML documents to some
    markup language or plain text. There is also a detailed document describing
    <A href="xsltc_namespace.html">namespace handling</A> in all parts of
    XSLTC (compiler, internal DOM, and output handler).</P>

    </FONT></TD></TR></TABLE><BR>

    
    <A name="compiler"><!--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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" 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 alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>XSLTC compiler design</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1">

    <P>The figure below describes the overall design of XSLTC's compiler:</P>
    <P><IMG align="right" alt="compiler_design.gif" border="0" hspace="4" src="images/compiler_design.gif" vspace="4"><BR clear="all"></P>
    <P><I>Figure 2: Compiler architecture overview</I></P>

    <P>There is also a <A href="xsltc_compiler.html">high-level design</A>
    document for XSLTC's compiler. Apart from that you can also find separate
    design documents for some XSL elements and XPath expressions, patterns
    and functions:</P>

    <TABLE border="0" cellpadding="0" cellspacing="0" width="474"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="474"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="472"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="472"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="472"><FONT color="#ffffff" face="arial,helvetica,sanserif" size="-1"><IMG alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>XSL elements</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="472"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="472"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="464"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1">
      <UL>
        <LI><A href="xsl_sort_design.html">&lt;xsl:sort&gt;</A></LI>
        <LI><A href="xsl_key_design.html">&lt;xsl:key&gt;</A></LI>
        <LI><A href="xsl_whitespace_design.html">&lt;xsl:preserve-space&gt;</A></LI>
        <LI><A href="xsl_whitespace_design.html">&lt;xsl:strip-space&gt;</A></LI>
        <LI><A href="xsl_comment_design.html">&lt;xsl:comment&gt;</A></LI>
        <LI><A href="xsl_comment_design.html">&lt;xsl:message&gt;</A></LI>
        <LI><A href="xsl_if_design.html">&lt;xsl:if&gt;</A></LI>
        <LI><A href="xsl_choose_design.html">&lt;xsl:choose&gt;</A></LI>
        <LI><A href="xsl_variable_design.html">&lt;xsl:variable&gt;</A></LI>
        <LI><A href="xsl_variable_design.html">&lt;xsl:param&gt;</A></LI>
        <LI><A href="xsl_include_design.html">&lt;xsl:include&gt;</A></LI>
        <LI><A href="xsl_include_design.html">&lt;xsl:import&gt;</A></LI>
      </UL>
    </FONT></TD></TR></TABLE><BR>
    <TABLE border="0" cellpadding="0" cellspacing="0" width="474"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="474"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="472"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="472"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="472"><FONT color="#ffffff" face="arial,helvetica,sanserif" size="-1"><IMG alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>XPath functions</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="472"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="472"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="464"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1">
      <UL>
        <LI><A href="xsl_key_design.html">key()</A></LI>
        <LI><A href="xsl_lang_design.html">lang()</A></LI>
        <LI><A href="xsl_unparsed_design.html">unparsed-entity-uri()</A></LI>
      </UL>
    </FONT></TD></TR></TABLE><BR>
    <TABLE border="0" cellpadding="0" cellspacing="0" width="474"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="474"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="472"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="472"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="472"><FONT color="#ffffff" face="arial,helvetica,sanserif" size="-1"><IMG alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>XPath expressons</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="472"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="472"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="464"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1">
      <UL>
        <LI><A href="xsltc_predicates.html">Predicates</A></LI>
      </UL>
    </FONT></TD></TR></TABLE><BR>

    <TABLE border="0" cellpadding="0" cellspacing="0" width="474"><TR><TD bgcolor="666699" colspan="2" width="484"><TABLE border="0" cellpadding="0" cellspacing="0" width="474"><TR><TD bgcolor="#039acc" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="472"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="472"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#0086b2" width="472"><FONT color="#ffffff" face="arial,helvetica,sanserif" size="-1"><IMG alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>XPath patterns</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="472"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="472"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="464"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1">
      <UL>
        <LI><A href="xsltc_predicates.html#step-pattern">StepPattern</A></LI>
        <LI><A href="xsl_key_design.html#patterns">IdPattern</A></LI>
        <LI><A href="xsl_key_design.html#patterns">KeyPattern</A></LI>
      </UL>
    </FONT></TD></TR></TABLE><BR>
    </FONT></TD></TR></TABLE><BR>

    
    <A name="runtime"><!--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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" 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 alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>XSLTC runtime library design</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1">

    <P>The runtime portion of XSLTC has four main components; the internal DOM
    implementation (not W3C), the translet class(es), the runtime
    library and the output processor:</P>

    <P><IMG align="right" alt="runtime_design.gif" border="0" hspace="4" src="images/runtime_design.gif" vspace="4"><BR clear="all"></P>
    <P><I>Figure 3: Runtime library architecture overview</I></P>

    <P>The <A href="xsltc_runtime.html">runtime library design</A> document
    describes the structure of the compiled translet as well as the translet
    runtime library.</P>

    <P>The <A href="xsltc_dom.html">Internal DOM design</A> document
    describes the components and structure of the internal DOM, support for
    DOM2 navigation, the DOM adapter, DOM multiplexer, and DOM builder.</P>

    <P>The <A href="xsltc_iterators.html">iterator design</A> document
    describes the general design of the internal DOM iterators and describes
    some of the more complicated iterators in detail.</P>

    </FONT></TD></TR></TABLE><BR>

    
    <A name="trax"><!--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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#039acc" height="1" width="482"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#0086b2" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR><TR><TD bgcolor="#039acc" width="1"><IMG alt="" 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 alt="" border="0" height="2" hspace="0" src="resources/void.gif" vspace="0" width="2"><B>XSLTC TrAX Implementation</B></FONT></TD><TD bgcolor="#017299" width="1"><IMG alt="" 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 alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD><TD bgcolor="#017299" height="1" width="482"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="482"></TD><TD bgcolor="#017299" height="1" width="1"><IMG alt="" border="0" height="1" hspace="0" src="resources/void.gif" vspace="0" width="1"></TD></TR></TABLE></TD></TR><TR><TD width="10">&nbsp;</TD><TD width="474"><FONT color="#000000" face="arial,helvetica,sanserif" size="-1">

    <P>An implementation of the JAXP/ TrAX interface was added on to XSLTC
    at a late stage. Special care was taken to preserve the small footprint
    and high performance of XSLTC. The following design was used to wrap
    XSLTC behind a lightweight (but complete) TrAX implementation:</P>

    <P><IMG align="right" alt="trax_translet_wrapping.gif" border="0" hspace="4" src="images/trax_translet_wrapping.gif" vspace="4"><BR clear="all"></P>
    <P><I>Figure 4: XSLTC TrAX interface implementation</I></P>

    <P>The <A href="xsltc_trax.html">TrAX design</A> document contains
    details of XSLTC's TrAX implementation.</P>

    <P>XSLTC also has a 'smart' TrAX <CODE><FONT face="courier, monospaced">TransformerFactory</FONT></CODE> class
    that will alternate between using XSLTC and Xalan for transformations.
    This factory class will make its choices based on usage patterns. This will
    be described in a separate design document.</P>

    </FONT></TD></TR></TABLE><BR>

    </FONT></TD></TR></TABLE><BR>

  <P><I>Design documents by <A href="mailto:morten@xml.apache.org">Morten J&oslash;rgensen</A> - updated 13.12.2001</I></P>

</TD></TR></TABLE></TD></TR></TABLE><BR><TABLE border="0" cellpadding="0" cellspacing="0" width="620"><TR><TD bgcolor="#0086b2"><IMG alt="dot" height="1" src="resources/dot.gif" width="1"></TD></TR><TR><TD align="center"><FONT color="#0086b2" size="-1"><I>
              Copyright &copy; 2004 The Apache Software Foundation.
              All Rights Reserved.
            </I></FONT></TD></TR></TABLE></BODY></HTML>