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INFO 440: Information System Design Fall 2003 * Bob Boiko * MSIM Associate Chair

INFO 440: Information System Design Fall 2003 * Bob Boiko * MSIM Associate Chair. XML Transforms. Templates as Programs. Templates have processor programs that read them and form an output page. Templates as Programs.

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INFO 440: Information System Design Fall 2003 * Bob Boiko * MSIM Associate Chair

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  1. INFO 440: Information System Design Fall 2003 * Bob Boiko * MSIM Associate Chair XML Transforms

  2. Templates as Programs Templates have processor programs that read them and form an output page. INFO 440: Information System Design * Fall 2004 * Bob Boiko * MSIM Associate Chair

  3. Templates as Programs <HTML>   <HEAD>[Insert Title]</HEAD>   <BODY>[Insert Body]</BODY></HTML> <xsl:template match="/">   <HTML>      <xsl:apply-templates />   </HTML></xsl:template><xsl:template match="Title">   <TITLE>      <xsl:value-of select="."/>   </TITLE></xsl:template><xsl:template match="Body">   <BODY>      <xsl:value-of select="."/>   </BODY></xsl:template> <HTML>   <HEAD>@@(Title)@@</HEAD>   <BODY>      <!– TemplateBeginEditable name=“head” -->      <!– TemplateEndEditable -->   </BODY></HTML> <HTML>   <HEAD>      <CMSCommand>         <INSERT COMPONENT="ID" ELEMENT="Body">            <CUSTOMCOMMAND NAME="SectName" File="Myfunct.dll"/>         </INSERT>      </CMSCommand>   </HEAD>   <BODY>      <INSERT COMPONENT="ID" ELEMENT="Body"/>   </BODY></HTML> Function BuildPage(ID)   Set Component = LoadComponent(ID)   Title = Component.GetElement("title")   Body = Component.GetElement("body")   Output ("<HTML><HEAD>“)   Output (Title)   Output ("</HEAD><BODY>”)   Output (Body)   Output ("</Body></HTML>”)End Function <HTML>   <HEAD><%=sTitle%></HEAD>   <BODY><%=sTitle%>  </BODY></HTML> INFO 440: Information System Design * Fall 2004 * Bob Boiko * MSIM Associate Chair

  4. What is XSLT? • A way to transform XML • To HTML • To text • Not too good at other formats ( • A way to add formatting • A programming language • Not for end users • Not too hard for easy things • Will need to use “real” programming where it fails INFO 440: Information System Design * Fall 2004 * Bob Boiko * MSIM Associate Chair

  5. Why use It? • Standardizes your publications • Reuse • Create one transform (i.e., XSL file) many pages • One content chunk many presentations • Assures well formed output • Separates processing code from presentation code (sort of) INFO 440: Information System Design * Fall 2004 * Bob Boiko * MSIM Associate Chair

  6. Major Player XML • XSL is XML! • All the same rules apply <xsl:stylesheet> <xsl:templatematch="/">      <h1>           <xsl:value-ofselect="//title"/>      </h1>      <h2>           <xsl:value-ofselect="//author"/>      </h2> </xsl:template></xsl:stylesheet> INFO 440: Information System Design * Fall 2004 * Bob Boiko * MSIM Associate Chair

  7. Major Player Templates & XPath • The whole file is a stylesheet • Stylesheets have templates • Templates have selectors • Selectors use XPath • Templates contain value-of’s • Value-of’s contain selectors INFO 440: Information System Design * Fall 2004 * Bob Boiko * MSIM Associate Chair

  8. Template Example Taken from http://www.zvon.org/xxl/XSLTutorial/Output/example1_ch1.html INFO 440: Information System Design * Fall 2004 * Bob Boiko * MSIM Associate Chair

  9. The Spy debug environment INFO 440: Information System Design * Fall 2004 * Bob Boiko * MSIM Associate Chair

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