EDIT:
This is the smallest test case in lxml that I can come up with (written totally in Python)
from lxml import etree
xslt_tree = etree.XML('''\
<?xml version="1.0" encoding="UTF-8"?>
<MD_Metadata xmlns="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco">
<language/>
<characterSet/>
</MD_Metadata>''')
doc = etree.XML('''\
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:gmd="http://www.isotc211.org/2005/gmd" >
<!-- This adds the contact tag if it doesn't exist -->
<xsl:template match="/gmd:MD_Metadata">
<xsl:copy-of select="*"/>
<xsl:message>
Worked
</xsl:message>
</xsl:template>
</xsl:stylesheet>''')
transform = etree.XSLT(doc)
result = transform(xslt_tree)
print transform.error_log
print (etree.tostring(result,pretty_print=True))
This outputs
<language xmlns="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco"/>
when surely it should output
<MD_Metadata xmlns="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco">
<language/>
<characterSet/>
</MD_Metadata>
Any ideas why?
OLD QUESTION
I have an xml file like this:
<?xml version="1.0" encoding="UTF-8"?>
<MD_Metadata xmlns="http://www.isotc211.org/2005/gmd">
<language>
<LanguageCode codeList="http://www.loc.gov/standards/iso639-2/php/code_list.php" codeListValue="eng" codeSpace="ISO639-2">eng</LanguageCode>
</language>
<characterSet>
<MD_CharacterSetCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_CharacterSetCode" codeListValue="utf8" codeSpace="ISOTC211/19115">utf8</MD_CharacterSetCode>
</characterSet>
.... etc
</MD_Metadata>
and an xlt file as follows:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<!-- Show all elements -->
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<!-- This adds the contact tag if it doesn't exist -->
<xsl:template match="/gmd:MD_Metadata">
<xsl:copy-of select="@*|node()">
<xsl:if test="not(/gmd:MD_Metadata/gmd:contact)">
<xsl:element name="contact" namespace="http://www.isotc211.org/2005/gmd">
</xsl:element>
</xsl:if>
</xsl:copy-of>
</xsl:template>
</xsl:stylesheet>
When I run it in lxml in Python, I get the MD_Metadata element and the first child, returned. However, when I run this in Eclipse WTP (Eclipse XSL Tools) using either the default Java processor or Xalan, I get all elements returned from the MD_Metadata tag, including characterSet and elements afterwards. For me, the latter was the expected behaviour due to the tag. I can't see anything I am doing in calling the transform in Python, but just in case:
xslt_root = lxml.etree.parse("XSLFile")
transform = lxml.etree.XSLT(xslt_root)
result_tree = transform(doc)
print (etree.tostring(result_tree,pretty_print=True))
Is there a substantial difference between the two processors I am using or is there another explanation?