Given XML where FORMNUMBER can be numeric only; begin with numeric and then include alpha; or follow a numeric alpha numeric pattern:
<FORMSLIST>
<FORMS>
<FORMNUMBER>3 ABC</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>12 ABC 45</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>3 XYZ</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>18</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>326</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>21 B</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>12 EFG 79</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>3 ABCD</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
</FORMSLIST>
This is my stylesheet (variation on http://stackoverflow.com/questions/3961515/):
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/">
<xsl:variable name="vAlpha" select="' ABCDEFGHIJKLMNOPQRSTUVWXYZ'"/>
<xsl:for-each-group select="FORMSLIST/FORMS" group-by="FORMSEQ">
<xsl:sort select="FORMSEQ" data-type="number"/>
<!-- NEED HELP WITH THE FOLLOWING SORT -->
<xsl:for-each select="current-group()[(floor(number(FORMNUMBER)) = floor(number(FORMNUMBER))) or (substring-before(FORMNUMBER,' ') and translate(substring-before(FORMNUMBER,' '),' 0123456789','') = '')]">
<xsl:sort select="translate(FORMNUMBER, $vAlpha, '')" data-type="number"/>
<xsl:sort select="substring-after(FORMNUMBER,' ')"/>
<xsl:element name="{local-name()}">
<xsl:copy-of select="*"/>
</xsl:element>
</xsl:for-each>
<!-- THIS SORT WORKS AND I DON'T HAVE QUESTIONS ON THIS: ALPHA ONLY FORMS; BEGIN WITH ALPHA AND THEN GO TO NUMERIC...MAY ALSO GO BACK TO ALPHA -->
<xsl:for-each select="current-group()[contains($vAlpha,substring(FORMNUMBER,1,1)) or (translate(FORMNUMBER, $vAlpha, '') = '')]">
<xsl:sort select="translate(FORMNUMBER, ' 0123456789', '')"/>
<xsl:sort select="translate(FORMNUMBER, $vAlpha, '')" data-type="number"/>
<xsl:element name="{local-name()}">
<xsl:copy-of select="*"/>
</xsl:element>
</xsl:for-each>
</xsl:for-each-group>
</xsl:template>
</xsl:stylesheet>
The resulting transform is:
<FORMSLIST>
<FORMS>
<FORMNUMBER>3 ABC</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>3 ABCD</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>3 XYZ</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>18</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>21 B</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>326</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>12 ABC 45</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>12 EFG 79</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
</FORMSLIST>
My desired result would be to have the '12 ABC 45' and '12 EFG 79' forms included in the sort like so (list is first sorted by beginning number):
<FORMSLIST>
<FORMS>
<FORMNUMBER>3 ABC</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>3 ABCD</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>3 XYZ</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>12 ABC 45</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>12 EFG 79</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>18</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>21 B</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
<FORMS>
<FORMNUMBER>326</FORMNUMBER>
<FORMSEQ>99900</FORMSEQ>
</FORMS>
</FORMSLIST>
I have tried numerous variations but can't seem to get it to work.