XSLT: Find the way to transform to XML - xslt

Question

I have XML in the following format:
<?xml version="1.0"?>
<MES_VEHICLE_STATUS_DESCRIPTOR xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="MOM.Production" PRODUCTIONORDER="000001995795" >
<POSECTION LOCATION="" />
<ORDERSECTION SALESORDER="" />
<MATERIALCONSUMPTIONSECTION>
<MATERIAL_CONSUMPTION DESC="car" QTY="1.000" WORKPLACE="3001_GAT101LH">BIN1000004</MATERIAL_CONSUMPTION>
<MATERIAL_CONSUMPTION DESC="PLAIN_WASHER" QTY="1.000" WORKPLACE="3001_GAT101LH">WRE20000018</MATERIAL_CONSUMPTION>
<MATERIAL_CONSUMPTION DESC="car" QTY="1.000" WORKPLACE="3001_GAT101LH">BIN1000003</MATERIAL_CONSUMPTION>
</MATERIALCONSUMPTIONSECTION>
</MES_VEHICLE_STATUS_DESCRIPTOR>
and output should look like that:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:mat="http://mes.com/ScrapManagement">
<soapenv:Header/>
<soapenv:Body>
<mat:DT_SCRAPMANAGEMENT_MES_REQ>
<DATA>
<PlantCode>3002</PlantCode>
<SAPOrder>000001995795</SAPOrder>
<Quantity>1.000</Quantity>
<PartNo>BIN1000004</PartNo>
<WorkPlace>3001_GAT101LH</WorkPlace>
</DATA>
<DATA>
<PlantCode>3002</PlantCode>
<SAPOrder>000001995795</SAPOrder>
<Quantity>1.000</Quantity>
<PartNo>WRE20000018</PartNo>
<WorkPlace>3001_GAT101LH</WorkPlace>
</DATA>
<DATA>
<PlantCode>3002</PlantCode>
<SAPOrder>000001995795</SAPOrder>
<Quantity>1.000</Quantity>
<PartNo>BIN1000003</PartNo>
<WorkPlace>3001_GAT101LH</WorkPlace>
</DATA>
</mat:DT_SCRAPMANAGEMENT_MES_REQ>
</soapenv:Body>
</soapenv:Envelope>
My XSLT to transform
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>
<xsl:output encoding="UTF-8" indent="yes" method="xml" version="1.0" />
<xsl:template match="MES_VEHICLE_STATUS_DESCRIPTOR">
<soapenv:Envelope
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:mat="http://mes.com/ScrapManagement">
<soapenv:Header />
<soapenv:Body>
<xsl:element name="mat:DT_SCRAPMANAGEMENT_MES_REQ">
<xsl:variable name="po" select="#PRODUCTIONORDER" />
<xsl:for-each select="MATERIALCONSUMPTIONSECTION/MATERIAL_CONSUMPTION">
<DATA>
<PlantCode>
<xsl:text>3002</xsl:text>
</PlantCode>
<SAPOrder>
<xsl:value-of select="$po" />
</SAPOrder>
<Quantity>
<xsl:value-of select="#QTY" />
</Quantity>
<PartNo>
<xsl:value-of select="." />
</PartNo>
<WorkPlace>
<xsl:value-of select="#WORKPLACE" />
</WorkPlace>
</DATA>
</xsl:for-each>
</xsl:element>
</soapenv:Body>
</soapenv:Envelope>
</xsl:template>
</xsl:stylesheet>
If i delete xmlns="MOM.Production" in XML file, the transformation is OK. But if have it in xml file, cannot transform. I use website: https://www.online-toolz.com/tools/xslt-transformation.php and show the error: Error:DOMDocument::loadXML(): xmlns: URI MOM.Production is not absolute in Entity, line: 2.
I don't understand what is reason.
I don't understand what is reason

Answer 1

The code you had in mind is probably more or less this:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output encoding="UTF-8" indent="yes" method="xml" version="1.0" />
<xsl:template match="MES_VEHICLE_STATUS_DESCRIPTOR">
<xsl:for-each select="MATERIALCONSUMPTIONSECTION/MATERIAL_CONSUMPTION">
<xsl:element name="DATA">
<xsl:element name="PRODUCTIONORDER">
<xsl:value-of select="../../#PRODUCTIONORDER" />
</xsl:element>
<xsl:element name="QTY">
<xsl:value-of select="#QTY" />
</xsl:element>
<xsl:element name="MATERIAL">
<xsl:value-of select="text()" />
</xsl:element>
</xsl:element>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
I think you have to understand the difference between relative and absolute paths in the XPATH expressions your are using to select the correct nodes.
When you are inside a template matching the node MES_VEHICLE_STATUS_DESCRIPTOR, you don't use absolute paths like /MATERIALCONSUMPTIONSECTION/MATERIAL_CONSUMPTION (which doesn't exist in this case), but paths relative to this node, as MATERIALCONSUMPTIONSECTION/MATERIAL_CONSUMPTION.
When you are inside a <xsl:for-each select="MATERIALCONSUMPTIONSECTION/MATERIAL_CONSUMPTION"> loop, you have to select the nodes with relative paths like text(), ../../#PRODUCTIONORDER or #QTY. Notice the # telling the QTY and PRODUCTIONORDER are attribute type nodes.
Finally, your current output is no well formed XML since it lacks a root element.
Personnaly, I would replace the <xsl:element> tag by its litteral value and avoid the computation of a constant field accross a loop:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output encoding="UTF-8" indent="yes" method="xml" version="1.0" />
<xsl:template match="MES_VEHICLE_STATUS_DESCRIPTOR">
<xsl:variable name="po" select="#PRODUCTIONORDER" />
<xsl:for-each select="MATERIALCONSUMPTIONSECTION/MATERIAL_CONSUMPTION">
<DATA>
<PRODUCTIONORDER><xsl:value-of select="$po" /></PRODUCTIONORDER>
<QTY><xsl:value-of select="#QTY" /></QTY>
<MATERIAL><xsl:value-of select="." /></MATERIAL>
</DATA>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>