Sorting complete node based on grand-child (with qualifier) - xslt

Question

I need to sort a node by the value of a grand-grand-child. For this I found different examples, but the child G_SG16 appears several times and I need to add a qualifier (here DOC). It could also be that the qualifier DOC does not exits.
Here the line item node G_SG15 that should be sorted including all sub notes:
<?xml version="1.0" encoding="UTF-8"?>
<ns0:DESADV96A xmlns:ns0="urn:DESADV">
<DifferentNodes/>
<G_SG10>
<G_SG15>
<S_LIN>
<D_1082>10</D_1082>
</S_LIN>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>DOC</D_1153>
<D_1154>333</D_1154>
</C_C506>
</S_RFF>
</G_SG16>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>WE</D_1153>
<D_1154>Customer</D_1154>
<D_1156/>
<D_4000/>
</C_C506>
</S_RFF>
</G_SG16>
</G_SG15>
<G_SG15>
<S_LIN>
<D_1082>20</D_1082>
</S_LIN>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>DOC</D_1153>
<D_1154>111</D_1154>
</C_C506>
</S_RFF>
</G_SG16>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>WE</D_1153>
<D_1154>Customer</D_1154>
<D_1156/>
<D_4000/>
</C_C506>
</S_RFF>
</G_SG16>
</G_SG15>
<G_SG15>
<S_LIN>
<D_1082>30</D_1082>
</S_LIN>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>DOC</D_1153>
<D_1154>222</D_1154>
</C_C506>
</S_RFF>
</G_SG16>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>WE</D_1153>
<D_1154>Customer</D_1154>
<D_1156/>
<D_4000/>
</C_C506>
</S_RFF>
</G_SG16>
</G_SG15>
<G_SG15>
<S_LIN>
<D_1082>40</D_1082>
</S_LIN>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>WE</D_1153>
<D_1154>Customer</D_1154>
<D_1156/>
<D_4000/>
</C_C506>
</S_RFF>
</G_SG16>
</G_SG15>
</G_SG10>
</ns0:DESADV96A>
Result should look like this. It is not important if the node without DOC appears at begining or end of the sorted list.
result
<?xml version="1.0" encoding="UTF-8"?>
<ns0:DESADV96A xmlns:ns0="urn:DESADV">
<DifferentNodes/>
<G_SG10>
<G_SG15>
<S_LIN>
<D_1082>20</D_1082>
</S_LIN>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>DOC</D_1153>
<D_1154>111</D_1154>
</C_C506>
</S_RFF>
</G_SG16>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>WE</D_1153>
<D_1154>Customer</D_1154>
<D_1156/>
<D_4000/>
</C_C506>
</S_RFF>
</G_SG16>
</G_SG15>
<G_SG15>
<S_LIN>
<D_1082>30</D_1082>
</S_LIN>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>DOC</D_1153>
<D_1154>222</D_1154>
</C_C506>
</S_RFF>
</G_SG16>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>WE</D_1153>
<D_1154>Customer</D_1154>
<D_1156/>
<D_4000/>
</C_C506>
</S_RFF>
</G_SG16>
</G_SG15>
<G_SG15>
<S_LIN>
<D_1082>10</D_1082>
</S_LIN>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>DOC</D_1153>
<D_1154>333</D_1154>
</C_C506>
</S_RFF>
</G_SG16>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>WE</D_1153>
<D_1154>Customer</D_1154>
<D_1156/>
<D_4000/>
</C_C506>
</S_RFF>
</G_SG16>
</G_SG15>
<G_SG15>
<S_LIN>
<D_1082>40</D_1082>
</S_LIN>
<G_SG16>
<S_RFF>
<C_C506>
<D_1153>WE</D_1153>
<D_1154>Customer</D_1154>
<D_1156/>
<D_4000/>
</C_C506>
</S_RFF>
</G_SG16>
</G_SG15>
</G_SG10>
</ns0:DESADV96A>
I tested this one, but it just gives back the source text as it is:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="node()|#*">
<xsl:copy>
<xsl:apply-templates select="node()|#*"/>
</xsl:copy>
</xsl:template>
<xsl:template match="G_SG15">
<xsl:copy>
<xsl:apply-templates select="node()|#*">
<xsl:sort select="/G_SG16/S_RFF/C_C506/D_1154" order="ascending" data-type="text"/>
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
Of course the qualifier is still missing, but I hoped that he starts sorting somehow.
I am using an online editor for this. Does anyone know a good (free) debugger for XSLT? Especially why my rule is not used I could not see with a simple editor.
Thanks for your support :-)
Chris

Answer 1

took me a little while, but I figure out with try and error:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<!-- identity transform -->
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="G_SG10">
<xsl:copy>
<xsl:apply-templates select="*[not(contains(name(), 'G_SG15'))]"/>
<xsl:apply-templates select="G_SG15">
<xsl:sort select="G_SG16/S_RFF/C_C506[D_1153='DOC']/D_1154" data-type="text" order="ascending"/>
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
My first fault was not to select G_SG10 but G_SG15 to sort the G_SG15 which did not worked. Also adding all subnodes next to G_SG15 with [not(contains(name(), 'G_SG15'))] was a little bit try and error. Main problem is if you don't have XMLSpy or something like this to debug a XSL.
Regards
Chris