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XSLT review request

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Subject: XSLT review request
From: Nathan Shaw <n8_shaw@xxxxxxxxx>
Date: Mon, 20 Aug 2001 06:51:17 -0700 (PDT)
xslt review
Hi all..

I am wrapping up my first real XML/XSLT project. I
have everything working pretty well and thought that
it would be a good idea to post the XSLT here for
review.

I am definitely a newbie (although this list has
helped bring me up to working speed somewhat quickly),
so I am basically looking for any suggestions on
pitfalls I may have fallen into or optimization
techniques I could apply to increase the effeciency of
the transformations.

Thanks all! Direct replies appreciated
(n8_shaw@xxxxxxxxx).

XSLT:

<?xml version="1.0" ?>
<!--
XSLT Stylesheet for OBPR General Information web site
Version 1.0
08/13/2001
Nathan Shaw (nshaw@xxxxxxxxxxx)
-->
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
version="1.0">
<xsl:output method="html" doctype-public="-//W3C//DTD
HTML 4.0 Transitional//EN"
doctype-system="DTD/html4-transitional.dtd"
omit-xml-declaration="yes" indent="no" />
<xsl:strip-space elements="*" />
<!--<xsl:preserve-space elements="..." />-->

<xsl:template match="/">
<html xmlns:="http://www.w3.org/1999/xhtml"
xml:lang="en-US" lang="en-US">
<head>
<title>NASA - SpaceResearch:OBPR - <xsl:value-of
select="WebContent/Content/Header/@Title" /></title>
<link rel="stylesheet" href="styles_general_info.css"
type="text/css" />
<script language="javascript" type="text/javascript"
src="../common/swap_image.js"></script>
</head>
<body bgcolor="#ffffff" marginheight="0"
marginwidth="0" topmargin="0" leftmargin="0"
onload="preLoad();">
<table border="0" cellpadding="0" cellspacing="0"
width="760">
<tr><td bgcolor="#000000">
<table cellspacing="1" cellpadding="0" border="0"
width="760">
<!--nasa logo and header graphic-->
  <tr valign="top">
   <td colspan="3"><a href="http://www.nasa.gov/"><img
src="../common/sub_nasa_logo.gif" width="54"
height="50" border="0" alt="NASA Logo" /></a><a
href="/"><img src="../common/sub_header2.gif"
width="704" height="50" border="0" alt="NASA Space
Research graphic" /></a></td>
  </tr>
	<!--top navigation-->
  <tr valign="top">
   <td><a href="#"><img name="sub_general_info"
src="../common/sub_general_info_on.gif" width="252"
height="19" border="0" alt="General Information"
/></a></td>
   <td><a href="#"
onMouseOut="swap_image('../common/sub_research_projects.gif','sub_research_projects');"

onMouseOver="swap_image('../common/sub_research_projects_on.gif','sub_research_projects');"><img
name="sub_research_projects"
src="../common/sub_research_projects.gif" width="252"
height="19" border="0" alt="Research and Projects"
/></a></td>
   <td><a href="#"
onMouseOut="swap_image('../common/sub_fun_learning.gif','sub_fun_learning');"

onMouseOver="swap_image('../common/sub_fun_learning_on.gif','sub_fun_learning');"><img
name="sub_fun_learning"
src="../common/sub_fun_learning.gif" width="252"
height="19" border="0" alt="Fun and Learning"
/></a></td>
  </tr>
</table>
<table cellspacing="1" cellpadding="8" border="0"
width="760">
	<!--left-hand navigation-->
  <tr valign="top">
   <td bgcolor="#99cc99" width="160" rowspan="2"><a
href="/general_info/what.html" class="mainnav">What is
the OBPR?</a><br />
   <a href="/general_info/news/news.html"
class="mainnav">News</a><br />
   <a href="/general_info/presentations/pres.html"
class="mainnav">Presentations</a><br />
   <a href="/general_info/articles/art.html"
class="mainnav">Articles</a><br />
   <a href="/general_info/contact.html"
class="mainnav">Contact Information</a><br />
   <a href="/general_info/faq.html"
class="mainnav">FAQ's</a>
   </td>
	 <!--header-->
	 <td width="600" bgcolor="#99cc99"><span
class="pageheader"><xsl:value-of
select="/WebContent/Content/Header/@Title"
/></span><br />
	 	<xsl:for-each
select="/WebContent/Navigation/SubMenu/SubMenuItem">
			<!--subnavigation--> 
			<a href="{@URL}" class="subnav"><xsl:value-of
select="text()" /></a><xsl:if 
test="position()!=last()"> | </xsl:if>
		</xsl:for-each>
		<xsl:for-each
select="/WebContent/Navigation/SubMenu/Image"><br />
			<xsl:choose><xsl:when test="@LinkURL"><a
href="{@LinkURL}"><img 
src="{@SourceURL}" width="{@Width}" height="{@Height}"
align="{@Align}" name="{@Name}" 
border="{@Border}" alt="{@AltText}"
/></a></xsl:when><xsl:otherwise><img 
src="{@SourceURL}" width="{@Width}" height="{@Height}"

align="{@Align}" name="{@Name}" border="{@Border}"
alt="{@AltText}" /></xsl:otherwise>
			</xsl:choose>
		</xsl:for-each>
	 </td>
	</tr>
	<xsl:apply-templates select="/WebContent/Content" />
</table>
<!-- footer -->
<table cellspacing="0" cellpadding="5" border="0"
width="760">
  <tr>
   <td valign="top" bgcolor="#000000" width="600"
class="footer"><a href="/contact.htm">NASA
Headquarters Responsible Official: Code U</a><br /><a
href="contact.htm">Curator: Office of Biological and
Physical Research</a><br /><a
href="http://www.nasa.gov/hqpao/privacy.html">NASA
Privacy Statement</a></td>
	 <td bgcolor="#000000" width="160" align="right"><a
href="http://spaceresearch.nasa.gov/iso9k/iso9k.html"><img
src="../common/iso9001_logo.gif" width="51"
height="42" alt="ISO9001 Logo" border="0" /></a><a
href="https://neptune.hq.nasa.gov/codeu_kic/"><img
src="../common/kic_logo.gif" width="51" height="42"
alt="KIC Logo" border="0" /></a></td>
  </tr>
</table>
</td></tr>
</table>
</body>
</html>		
</xsl:template>

<!-- content -->
<xsl:template match="Content">
	<tr>
		<td width="600"
bgcolor="#ffffff"><xsl:apply-templates /></td>
  </tr>
</xsl:template>

<!--page header-->
<xsl:template match="Header">
	<xsl:apply-templates />
</xsl:template>

<xsl:template match="HeaderText">
<xsl:if test="string()"><xsl:copy-of select="node()"
/></xsl:if>
</xsl:template>

<!-- section -->
<xsl:template match="Section">
<div id="{@Title}"><span class="sectionheader">
	<xsl:choose>
		<xsl:when test="@URL">
			<xsl:choose>
				<xsl:when test="@Anchor"><a href="{@URL}"
name="{@Anchor}" class="anchor"><xsl:value-of
select="@Title" /></a></xsl:when>
				<xsl:otherwise><a href="{@URL}"
class="anchor"><xsl:value-of select="@Title"
/></a></xsl:otherwise>
			</xsl:choose>
		</xsl:when>
		<xsl:otherwise>
			<xsl:choose>
				<xsl:when test="@Anchor"><a name="{@Anchor}"
class="anchor"><xsl:value-of select="@Title"
/></a></xsl:when>
				<xsl:otherwise><xsl:value-of select="@Title"
/></xsl:otherwise>
			</xsl:choose>
		</xsl:otherwise>
	</xsl:choose>
</span><br /><br />
<xsl:apply-templates />
<xsl:if test="not(position()=last())">
	<hr size="1" noshade="noshade" width="520"
align="center" />
</xsl:if></div>
</xsl:template>

<xsl:template match="SectionText">
  <xsl:copy-of select="node()" />
</xsl:template>

<!-- subsection -->
<xsl:template match="SubSection">
<div id="{@Title}"><b>
	<xsl:choose>
		<xsl:when test="@URL">
			<xsl:choose>
				<xsl:when test="@Anchor"><a href="{@URL}"
name="{@Anchor}"><xsl:value-of select="@Title"
/></a></xsl:when>
				<xsl:otherwise><a href="{@URL}"><xsl:value-of
select="@Title" /></a></xsl:otherwise>
			</xsl:choose>
		</xsl:when>
		<xsl:otherwise>
			<xsl:choose>
				<xsl:when test="@Anchor"><a
name="{@Anchor}"><xsl:value-of select="@Title"
/></a></xsl:when>
				<xsl:otherwise><xsl:value-of select="@Title"
/></xsl:otherwise>
			</xsl:choose>
		</xsl:otherwise>
	</xsl:choose>
</b><br />
<xsl:apply-templates />
</div>
</xsl:template>

<xsl:template match="SubSectionText">
  <xsl:copy-of select="node()" />
</xsl:template>

<!-- list -->
<xsl:template match="List">
<xsl:choose><xsl:when test="@URL"><b><a
href="{@URL}"><xsl:value-of 
select="@Title"
/></a></b></xsl:when><xsl:otherwise><xsl:if
test="@Title"><b>
<xsl:value-of 
select="@Title"
/></b></xsl:if></xsl:otherwise></xsl:choose>
<xsl:choose>
	<xsl:when test="@Type='Unordered'">
	<ul><xsl:apply-templates /></ul>
	</xsl:when>
	<xsl:when test="@Type='Ordered'">
	<ol><xsl:apply-templates /></ol>
	</xsl:when>
	<xsl:otherwise>
	<ul><xsl:apply-templates /></ul>
	</xsl:otherwise>
</xsl:choose>
</xsl:template>

<xsl:template match="ListItem">
<li>
<xsl:choose>
	<xsl:when test="@URL"><a href="{@URL}"><xsl:value-of 
select="node()" /></a></xsl:when>
	<xsl:otherwise><xsl:value-of 
select="node()" /></xsl:otherwise>
</xsl:choose>
<xsl:if test="@Caption"> [<xsl:value-of
select="@Caption" />]</xsl:if>
</li>
</xsl:template>

<!-- image -->
<xsl:template match="Image">
<xsl:choose>
	<xsl:when test="@LinkURL"><a href="{@LinkURL}"><img
src="{@SourceURL}" 
width="{@Width}" height="{@Height}" align="{@Align}"
name="{@Name}" 
border="{@Border}" alt="{@AltText}" /></a></xsl:when>
	<xsl:otherwise><img 
src="{@SourceURL}" width="{@Width}" height="{@Height}"

align="{@Align}" name="{@Name}" border="{@Border}"
alt="{@AltText}" />
	</xsl:otherwise>
</xsl:choose>
</xsl:template>

<!-- table -->
<xsl:template match="DataTable">
<table cellspacing="{@CellSpacing}"
cellpadding="{@CellPadding}" 
border="{@Border}" width="{@Width}" height="{@Height}"
summary="{@Summary}" 
align="{@Align}" bgcolor="{@BGColor}">
	<xsl:if test="@Title"><caption><xsl:value-of
select="@Title" /></caption></xsl:if>
<xsl:apply-templates />
</table>
</xsl:template>

<xsl:template match="DataTableHeader">
<tr><xsl:apply-templates /></tr>
</xsl:template>

<xsl:template match="DataTableColumnHeader">
<th bgcolor="{@BGColor}" width="{@Width}"
height="{@Height}" align="{@Align}" valign="{@VAlign}"
rowspan="{@RowSpan}" colspan="{@ColSpan}">
	<xsl:choose>
		<xsl:when test="@URL"><a href="{@URL}"
class="anchor"><xsl:copy-of 
select="text()" /></a></xsl:when>
		<xsl:otherwise><xsl:copy-of select="node()" 
/></xsl:otherwise>
	</xsl:choose>
</th>
</xsl:template>

<xsl:template match="DataTableRow">
<tr><xsl:apply-templates /></tr>
</xsl:template>

<xsl:template match="DataTableRowHeader">
<th bgcolor="{@BGColor}" width="{@Width}"
height="{@Height}" align="{@Align}" valign="{@VAlign}"
rowspan="{@RowSpan}" colspan="{@ColSpan}">
	<xsl:choose>
		<xsl:when test="@URL"><a href="{@URL}"
class="anchor"><xsl:copy-of 
select="text()" /></a></xsl:when>
		<xsl:otherwise><xsl:copy-of select="node()" 
/></xsl:otherwise>
	</xsl:choose>
</th>
</xsl:template>

<xsl:template match="DataTableRowCell">
<td bgcolor="{@BGColor}" width="{@Width}"
height="{@Height}" align="{@Align}" valign="{@VAlign}"
rowspan="{@RowSpan}" colspan="{@ColSpan}">
	<xsl:choose>
		<xsl:when test="@URL"><a href="{@URL}"><xsl:copy-of 
select="text()" /></a></xsl:when>
		<xsl:otherwise><xsl:copy-of select="node()" 
/></xsl:otherwise>
	</xsl:choose>
</td>
</xsl:template>

</xsl:stylesheet>

SAMPLE XML:

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE WebContent PUBLIC "-//Alex Pline/DTD
OBPRWebContent//EN//" 
"../OBPRWebContent.dtd">
<?xml-stylesheet type="text/xsl"
href="OBPRGeneralInfoWebContent.xsl"?>
<WebContent>
<Navigation>
	<MainMenu></MainMenu>
  <SubMenu>
    <SubMenuItem
URL="strat.html#v">Mission</SubMenuItem>
    <SubMenuItem
URL="strat.html#g">Goals</SubMenuItem>
    <SubMenuItem
URL="strat.html#p">Philosophy</SubMenuItem>
  </SubMenu>
</Navigation>
<Content>
  <Header Title="OBPR Strategic Vision">
    <HeaderText />
  </Header>
  <Section Title="Mission" Anchor="v">
    <SectionText>Conduct basic and applied research to
support human 
exploration of space and to take advantage of the
space environment as a 
laboratory for scientific, technological, and
commercial 
research.</SectionText>
    <List>
	  <ListItem
URL="http://www.hq.nasa.gov/office/codez/plans/pl2000.pdf"

Caption="3.18 MB pdf">NASA Strategic Plan</ListItem>
	  <ListItem
URL="http://www.hq.nasa.gov/office/codez/plans.html">NASA

Planning Documents</ListItem>
    </List>
  </Section>
  <Section Title="Goals" Anchor="g">
    <SectionText />
    <List Type="Bulleted">
	  <ListItem>Enable Exploration: Conduct research to
enable safe and 
productive human habitation of space</ListItem>
	  <ListItem>Science: Use the space environment as a
laboratory to test the 
fundamental principles of physics, chemistry, and
biology</ListItem>
	  <ListItem>Commerce: Enable and promote commercial
research in 
space</ListItem>
	  <ListItem>Outreach: Use space research
opportunities to improve academic 
achievement and the quality of life</ListItem>
    </List>
  </Section>
  <Section Title="Philosophy" Anchor="p">
    <SectionText />
    <List Type="Bulleted">
	  <ListItem>To make use of the full spectrum of
biological, physical, 
chemical and biomedical research, from basic research
to applied 
research</ListItem>
	  <ListItem>To build and strengthen strong
involvement of the academic 
community in NASA's science and technology
mission</ListItem>
	  <ListItem>To provide the organization for
facilitating the effective use 
of ISS facilities for targeted scientific and
technology questions</ListItem>
	  <ListItem>To provide the organization for
transferring scientific and 
technology results for the benefit of Earth</ListItem>
    </List> 
  </Section>
</Content>
</WebContent>

=====
----------------------------
Nathan Shaw
Web Applications Developer
iaffect
http://www.iaffectonline.com
http://www.iaffectTV.com
----------------------------

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