I'm getting a hang of XML and am now experimenting with XSLT. I'd like to transform an XML file into a new XML file with a different format. I've been messing around with this for two days, but as you can see with the code I have posted below, I am not getting the desired results. If anything I'm continuing to make it worse.
You might be able to figure out what I want to change just by looking at the code I posted, but if not, here are the main changes I want to make: I want the root element to be classes and consist of class elements and a "count" attribute that counts the number of classes that have "Classroom" as a delivery. Course's "number" attribute should instead be a child element of class. Instead of having room being a child element of section, I'd like it to be an attribute of class, along with credits. If possible, I'd like to sort the class elements based on enrollment size (smallest to biggest). I'd also like to avoid using <xsl:for-each> as I've heard it is bad to use.
Original XML file:
<?xml version="1.0" encoding="UTF-8"?><courses><course number="341" credits="4.0"><title>Physics</title><section number="01" delivery="Classroom"><enrollment>15</enrollment><room>EA244</room><instructor><first>Herman</first><last>Johnson</last></instructor></section><section number="02" delivery="Online"><enrollment>10</enrollment><instructor><first>Herman</first><last>Johnson</last></instructor><instructor><first>Mike</first><last>Miller</last></instructor></section><section number="03" delivery="Classroom"><enrollment>12</enrollment><room>SH102</room><instructor><first>Allison</first><last>Sweeney</last></instructor></section></course><course number="368" credits="4.0"><title>Psychology</title><section number="01" delivery="Classroom"><enrollment>9</enrollment><room>AT102</room><instructor><first>Mike</first><last>Miller</last></instructor><instructor><first>Alex</first><last>Holmquist</last></instructor></section></course><course number="375" credits="4.0"><title>Biology</title><section number="01" delivery="ITV"><enrollment>18</enrollment><room>EA244</room><instructor><first>Mike</first><last>Miller</last></instructor></section></course><course number="385" credits="3.0"><title>Calculus</title><section number="01" delivery="Classroom"><enrollment>26</enrollment><room>ST108</room><instructor><first>Herman</first><last>Johnson</last></instructor></section></course><course number="413" credits="3.0"><title>Chemistry</title><section number="01" delivery="Online"><enrollment>10</enrollment><instructor><first>Mike</first><last>Miller</last></instructor></section></course></courses>Desired XML output:
<?xml version="1.0" encoding="UTF-8"?><classes count="4"><class credits="4.0" room="AT102"><number>368</number><title>Psychology</title><enrollment>9</enrollment><instructor><first>Mike</first><last>Miller</last></instructor><instructor><first>Alex</first><last>Holmquist</last></instructor></class><class credits="4.0" room="SH102"><number>341</number><title>Physics</title><enrollment>12</enrollment><instructor><first>Allison </first><last>Sweeney</last></instructor></class><class credits="4.0" room="EA244"><number>341</number><title>Physics</title><enrollment>15</enrollment><instructor><first>Herman</first><last>Johnson</last></instructor></class><class credits="3.0" room="ST108"><number>385</number><title>Calculus</title><enrollment>26</enrollment><instructor><first>Herman</first><last>Johnson</last></instructor></class></classes>Current XML output (Undesired)
<?xml version="1.0" encoding="UTF-8"?><classes count=""><class credits="4.0" room="EA244"><number>341</number><title>Physics</title><enrollment>15</enrollment><instructor>Herman Johnson Herman Johnson Mike Miller Allison Sweeney Mike Miller Alex Holmquist Mike Miller Herman Johnson Mike Miller</instructor></class></classes>XSLT file:
<?xml version="1.0" encoding="UTF-8"?><xsl:stylesheet version="1.0"xmlns:xsl="http://www.w3.org/1999/XSL/Transform"><!-- Define output method to XML --><xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes" /><xsl:template match="/"><classes><xsl:attribute name="count"> <!--<xsl:apply-templates select="/courses/course/section" /> --></xsl:attribute><class><xsl:attribute name="credits"><xsl:value-of select="/courses/course/@credits" /></xsl:attribute><xsl:attribute name="room"><xsl:value-of select="/courses/course/section/room" /></xsl:attribute><number><xsl:value-of select="/courses/course/@number" /></number><title><xsl:value-of select="/courses/course/title" /></title><enrollment><xsl:value-of select="/courses/course/section/enrollment" /></enrollment><instructor><xsl:apply-templates select=" courses/course/section/instructor" /></instructor></class></classes><!--template for instructor names --><xsl:template match="instructor"><xsl:copy/></xsl:template><xsl:template match="courses/course/title"><xsl:value-of select="title" /></xsl:template></xsl:template><!--template to count number of classes use "Classroom" delivery --><xsl:template match="section"><xsl:variable name="classroomCount" select="/{@delivery='Classroom']" /><xsl:value-of select="count($classroomCount)" /></xsl:template></xsl:stylesheet>