Counting with variable/unknown values XSLT

Question

I am very new to XSLT and I am trying to create a CSV of the number of publications each professor has had each year, Each entry is a different publication denoted by dm:INTELLCONT and each year is denoted by dm:DTY_PUB I am having trouble figuring out how to do this properly if I do not hard code the year, I want to do this in a loop for every year they've published something. My Current XML file is:

 <?xml version="1.0" encoding="UTF-8"?> <Data xmlns="http://www.digitalmeasures.com/schema/data" xmlns:dmd="http://www.digitalmeasures.com/schema/data-metadata" dmd:date="2017-10-16"> <INTELLCONT id="151370213376" dmd:originalSource="MANAGE_DATA" dmd:lastModified="2017-10-03T11:41:47" dmd:startDate="2016-04-15" dmd:endDate="2016-04-15"> <REFEREED>Yes</REFEREED> <CONTYPE>Abstract</CONTYPE> <CONTYPEOTHER/> <STATUS>Published</STATUS> <TITLE>Sample Title</TITLE> <TITLE_SECONDARY/> <DTM_PUB>April (2nd Quarter/Spring)</DTM_PUB> <DTD_PUB>15</DTD_PUB> <DTY_PUB>2016</DTY_PUB> <PUB_START>2016-04-15</PUB_START> <PUB_END>2016-04-15</PUB_END> <USER_REFERENCE_CREATOR>Yes</USER_REFERENCE_CREATOR> </INTELLCONT> <INTELLCONT id="151368284160" dmd:originalSource="MANAGE_DATA" dmd:lastModified="2017-10-03T10:44:48" dmd:startDate="2017-01-01" dmd:endDate="2017-12-31"> <REFEREED>Yes</REFEREED> <CONTYPE>Journal Article</CONTYPE> <CONTYPEOTHER/> <STATUS>Published</STATUS> <TITLE>Sample Title</TITLE> <TITLE_SECONDARY/> <INTELLCONT_AUTH id="151368284163"> <FACULTY_NAME/> <FNAME>FN</FNAME> <MNAME/> <LNAME>LN</LNAME> <INSTITUTION/> <ROLE>Author</ROLE> <STUDENT_LEVEL/> </INTELLCONT_AUTH> <INTELLCONT_AUTH id="151368284161"> <FACULTY_NAME>1898739</FACULTY_NAME> <FNAME>FN</FNAME> <MNAME>MN</MNAME> <LNAME>LN</LNAME> <INSTITUTION/> <ROLE>Author</ROLE> <STUDENT_LEVEL/> </INTELLCONT_AUTH> <PUBLISHER>Public Health</PUBLISHER> <PUBCTYST/> <PUBCNTRY/> <VOLUME>14</VOLUME> <ISSUE>3</ISSUE> <PAGENUM>265</PAGENUM> <DTY_PUB>2017</DTY_PUB> <PUB_START>2017-01-01</PUB_START> <PUB_END>2017-12-31</PUB_END> <USER_REFERENCE_CREATOR>Yes</USER_REFERENCE_CREATOR> </INTELLCONT> <INTELLCONT id="151368284160" dmd:originalSource="MANAGE_DATA" dmd:lastModified="2017-10-03T10:44:48" dmd:startDate="2017-01-01" dmd:endDate="2017-12-31"> <REFEREED>Yes</REFEREED> <CONTYPE>Journal Article</CONTYPE> <CONTYPEOTHER/> <STATUS>Published</STATUS> <TITLE>Sample Title</TITLE> <TITLE_SECONDARY/> <INTELLCONT_AUTH id="151368284163"> <FACULTY_NAME/> <FNAME>FN</FNAME> <MNAME/> <LNAME>LN</LNAME> <INSTITUTION/> <ROLE>Author</ROLE> <STUDENT_LEVEL/> </INTELLCONT_AUTH> <PUBLISHER>Public Health</PUBLISHER> <PUBCTYST/> <PUBCNTRY/> <VOLUME>14</VOLUME> <ISSUE>3</ISSUE> <PAGENUM>265</PAGENUM> <DTY_PUB>2017</DTY_PUB> <PUB_START>2017-01-01</PUB_START> <PUB_END>2017-12-31</PUB_END> <USER_REFERENCE_CREATOR>Yes</USER_REFERENCE_CREATOR> </INTELLCONT> </Data> 

My current XSL File is:

 <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:csv="csv:csv" xmlns="http://www.w3.org/1999/xhtml" xmlns:dm="http://www.digitalmeasures.com/schema/data" xmlns:dmd="http://www.digitalmeasures.com/schema/data-metadata" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:math="http://www.w3.org/2005/xpath-functions/math" xmlns:array="http://www.w3.org/2005/xpath-functions/array" xmlns:map="http://www.w3.org/2005/xpath-functions/map" xmlns:xhtml="http://www.w3.org/1999/xhtml" exclude-result-prefixes="array fn map math xhtml xs"> <xsl:output method="text" encoding="utf-8"/> <xsl:variable name="delimiter" select="','"/> <!-- xmlns:dm is the xmlns attribute in Data.--> <!-- define an array containing the fields we are interested in --> <xsl:variable name="fieldArray"> <field>Journal Articles</field> <field>Books</field> <field>Book Chapters</field> <field>Conference Proceeedings</field> <field>Others</field> </xsl:variable> <xsl:param name="fields" select="document('')/*/xsl:variable[@name='fieldArray']/*" /> <xsl:key name="Year-Published" match="dm:INTELLCONT" use="dm:DTY_PUB"/> <xsl:template match="/dm:Data"> <!--key("Year-Published", '2017')--> <!--<xsl:text>Journal Articles</xsl:text> <xsl:value-of select="$delimiter" /> <xsl:text>Books</xsl:text> <xsl:value-of select="$delimiter" /> <xsl:text>Book Chapters</xsl:text> <xsl:value-of select="$delimiter" /> <xsl:text>Conference Proceedings</xsl:text> <xsl:value-of select="$delimiter" /> <xsl:text>Others</xsl:text> --> <xsl:text>Year,</xsl:text> <!-- tabulating Years as columns --> <xsl:for-each select="dm:Record/dm:INTELLCONT[generate-id()=generate-id(key('Year-Published', dm:DTY_PUB)[1])]"> <xsl:sort select="(dm:DTY_PUB)" order="ascending"/> <xsl:value-of select="(dm:DTY_PUB)"/> <xsl:text>,</xsl:text> </xsl:for-each> <xsl:text>&#xa;</xsl:text> <!-- Tabulating Published Papers Per Year--> <xsl:for-each select="dm:Record/dm:INTELLCONT[generate-id()=generate-id(key('Year-Published', dm:DTY_PUB)[1])]"> <xsl:sort select="(dm:DTY_PUB)" order="ascending"/> <xsl:value-of select="count(dm:Record/dm:INTELLCONT[dm:CONTYPE='Journal Article'][dm:STATUS='Published'][dm:DTY_PUB=key('Year-Published', dm:DTY_PUB)[1])][dm:USER_REFERENCE_CREATOR!='No'])"/> <xsl:value-of select="$delimiter" /> </xsl:for-each> <xsl:text>&#xa;</xsl:text> <!-- output newline --> <xsl:text>&#xa;</xsl:text> </xsl:template> </xsl:stylesheet> 

As you can see the part where I am trying to count each publication per year has the comment Tabulating Published Papers Per Year

I want to loop through every year they published and count how many publications exist that year, any help would be very very much appreciated, thanks in advance!

Answer 1

You seem to have mastered the basic idea of XSLT 1.0 Muenchian Grouping, which is the hard part, and then you've slipped up on a simple issue of context. Here:

<xsl:for-each select="dm:Record/dm:INTELLCONT[...]">
    <xsl:sort select="(dm:DTY_PUB)" order="ascending"/> 
    <xsl:value-of select="count(dm:Record/dm:INTELLCONT[..]/>
</xsl:for-each>

that can't make sense because within the for-each, the context item is an INTELLICONT element, and you're trying to select downwards to a dn:RECORD.

In Muenchian grouping where you want to count the size of the group, the logical structure is

<xsl:for-each select="one item with each key value">
  <xsl:value-of select="count(all items with the same key value)"/>
</xsl:for-each>

so I would expect to see count(key(....)) .

Are you sure you can't use XSLT 2.0 and xsl:for-each-group for this? It makes life so much easier...