how to remove duplicate entries from the output xml file? - xslt

Question

XSL stylesheet is generating repeated output. Below is an example of it. The same thing is repeated thrice. In the first set of xml, i am only getting value of first attribute and in the secound from second attribute and so on.
<?xml version="1.0" encoding="UTF-8"?>
<obj>
<desc value="113662176"/>
<index value="" name="MATERIALNUMMER"/>
<index value="" name="DOKUMENTENART"/>
</obj>
<obj>
<desc value=""/>
<index value="66260383180" name="MATERIALNUMMER"/>
<index value="" name="DOKUMENTENART"/>
</obj>
<obj>
<desc value=""/>
<index value="" name="MATERIALNUMMER"/>
<index value="Fertigungsauftrag" name="DOKUMENTENART"/>
</obj>
I have also tired with xsl when and choose but the output was same. below is an example input xml with some attributes.
<?xml version = "1.0" encoding = "utf-8"?>
<root>
<document>
<field level = "document" name = "Fertigungsauftragsnummer" value = "113662176"/>
<field level = "document" name = "Materialnummer" value = "66260383180"/>
<field level = "document" name = "Dokumentenart" value = "Fertigungsauftrag"/>
</document>
</root>
below is the xsl style sheet which i am using for conversion. In the xsl template if i use match="/*" i dont get repeated output neither do i get values of xml attributes. It seems that for every xsl if we have one specific output. How can I make xsl style sheet to compile only once the input xml for all the xsl if statements?
<?xml version="1.0" encoding="UTF-8"?>
<xsl:transform version = "1.0" xmlns:xsl = "http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/root/document/*">
<xsl:text>
</xsl:text><xsl:text disable-output-escaping="yes"><</xsl:text><xsl:text>obj</xsl:text><xsl:text disable-output-escaping="yes">></xsl:text><xsl:text>
</xsl:text>
<xsl:text disable-output-escaping="yes"><</xsl:text><xsl:text>desc value="</xsl:text>
<xsl:if test="#name='Fertigungsauftragsnummer'">
<xsl:value-of select="#value" />
<xsl:if test="#name='Materialnummer'">
<xsl:value-of select="#value" />
<xsl:if test="#name='Dokumentenart'">
<xsl:value-of select="#value" />
</xsl:if>
</xsl:if>
</xsl:if>
<xsl:text disable-output-escaping="yes">"/></xsl:text><xsl:text>
</xsl:text>
<xsl:text disable-output-escaping="yes"><</xsl:text><xsl:text>/obj</xsl:text><xsl:text disable-output-escaping="yes">></xsl:text><xsl:text>
</xsl:text>
</xsl:template>
</xsl:transform>
Expected output is shown below
<?xml version="1.0" encoding="UTF-8"?>
<obj>
<desc value="113662176"/>
<index value="66260383180" name="MATERIALNUMMER"/>
<index value="Fertigungsauftrag" name="DOKUMENTENART"/>
</obj>

Answer 1

You current approach of using xsl:text with disable-output-escaping is not the right approach when building XML. You should be writing out the XML tags directly. It looks like you want to convert document elements into obj elements so you should have a template like this
<xsl:template match="/root/document">
<obj>
<xsl:apply-templates select="field" />
</obj>
</xsl:template>
(In your current XSLT, you were converting field into obj which is why you got three of them).
It also looks like you want fields with name "Fertigungsauftragsnummer" into a desc element, so just create a template for that.
<xsl:template match="field[#name='Fertigungsauftragsnummer']">
<desc value="{#value}"/>
</xsl:template>
Note the syntax for the attributes using curly braces. These are known as Attribute Value Templates.
For the other two fields, you can share a common template, as it looks like you just want to make the name upper-case in both cases
<xsl:template match="field">
<index value="{#value}" name="{translate(#name, 'abcdefghijklmnopqrstuvwxyz', 'ABCDEFGHIJKLMNOPQRSTUVWXYZ')}"/>
</xsl:template>
Try this XSLT
<xsl:stylesheet version = "1.0" xmlns:xsl = "http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes" />
<xsl:template match="/root/document">
<obj>
<xsl:apply-templates select="field" />
</obj>
</xsl:template>
<xsl:template match="field[#name='Fertigungsauftragsnummer']">
<desc value="{#value}"/>
</xsl:template>
<xsl:template match="field">
<index value="{#value}" name="{translate(#name, 'abcdefghijklmnopqrstuvwxyz', 'ABCDEFGHIJKLMNOPQRSTUVWXYZ')}"/>
</xsl:template>
</xsl:stylesheet>