Use a composite grouping key that spells out attributes in the required order if the names are known.
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Am 25.09.19, 23:44, "Geert Bormans geert(_at_)gbormans(_dot_)telenet(_dot_)be" <xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> schrieb:
All,
I a streaming XSLT 3.0, I have to group a series of elements by their attribute names and values
I have issues making the group-by motionless
In a simplified example
<rows>
<row a="val-a-1" b="b-val"/>
<row a="val-a-2" b="b-val"/>
<row a="val-a-1" b="b-val"/>
<row a="val-a-2"/>
</rows>
I need grouping this way
<rowgroups>
<rowgroup hash="|a=val-a-1|b=b-val"/>
<rowgroup hash="|a=val-a-2|b=b-val"/>
<rowgroup hash="|a=val-a-2"/>
</rowgroups>
easily achieved this way
<xsl:fork>
<xsl:for-each-group select="*" group-by="string-join(@*/concat('|', name(), '=', .), '')">
<rowgroup hash="{current-grouping-key()}"/>
</xsl:for-each-group>
</xsl:fork>
but, I could have data like this (third line attribute order swapped)
<rows>
<row a="val-a-1" b="b-val"/>
<row a="val-a-2" b="b-val"/>
<row b="b-val" a="val-a-1"/>
<row a="val-a-2"/>
</rows>
and this basically gives me a fourth group using the code above
So I want to make sure that the attributes order can be controlled when I prepare the group-by, but any sorting attempt I make, leads to the group-by no longer being motionless
I would welcome your suggestions
Thanks
Met vriendelijke groeten,
Best regards,
Geert Bormans