Suggested Solution to Final Examination of CSCI 5733.1 Summer 2004

CSCI 5733.1
XML Application Development
Summer 2004
Suggested Solution to Final Examination

(1) For example,

<html>
<body bgcolor="#ccccff">
<p>Persons and their email links:</p>
<ul>
{ for $p in doc("yueex/use-cases/yue/ft2.xml")//person
   return
      <li>
          { if ($p/email) then
          <a>
      { attribute href {concat("mailto:",$p/email[position()=1]/text())},
          (: note that concat must be used. Otherwise, a space will be created. :)
         $p/first/text(),
         " ",
         $p/last/text()
       }
     </a>
     else ""
     }
      </li>
}
</ul>
</body>
</html>

(2) For example:

(a) count(//person[link/@spouse])
(b) count(//person[following-sibling::person/link/@father=link/@father or following-sibling::person/link/@mother=link/@mother or preceding-sibling::person/link/@father=link/@father or preceding-sibling::person/link/@mother=link/@mother])
(c) //email[count(preceding::email) = 3] (Assume that <emai>l does not have <email> as an ancestor. To be more exact: //email[count(preceding::email) + count(ancestor::email) = 3]
(d) sum(//person/@luckynumber) div count(//person/@luckynumber)

Note that for (c), //email[4] will not be correct as position() gives the position of the context node as a child of its parent.

(3) For example,

<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   version="1.0">
<xsl:output method="xml" version="1.0" indent="yes" />

<xsl:template match="/">
   <xsl:apply-templates select="*"/>
</xsl:template>

<xsl:template match="*">
   <xsl:copy>
      <xsl:apply-templates select="@*" />
      <xsl:element name="numAttributesInSubtree">
         <xsl:value-of select="count(.//@*)" />
      </xsl:element>
      <xsl:apply-templates select="node()" />
   </xsl:copy>
</xsl:template>

<xsl:template match="@*">
   <xsl:copy />
</xsl:template>

</xsl:stylesheet>

(4)

(a) F
(b) T