[xsl] convert String to date format and sort

[Anil Kumar Veeramalli <anil.v@xxxxxxxxxxxxxxxxxxxxx>]

Hi,

1) my current date format is 28-Oct-1987(dd-mmm-yyyy), want to convert it yyyy-mm-dd format.
2) sort the dates

XML code:
<Employee 
startdate="11/20/1999">
<name>John</name>
</Employee>
<Employee 
startdate="07/06/2001">
<name>John</name>
</Employee>
<Employee 
startdate="04/23/1999">
<name>John</name>
</Employee>

xslt 
code to sort by date:
<xsl:template 
match="Employee">
<xsl:apply-templates>
<xsl:sort 
select="substring(@startdate,7,4)"/> <!-- year sort -->
<xsl:sort 
select="substring(@startdate,1,2)"/> <!-- day sort -->
<xsl:sort 
select="substring(@startdate,4,2)"/> <!-- month sort 
-->
</xsl:apply-templates>
</xsl:apply-templates>


sorting this way is good approach or do we have any better approach.



Thanks,
Anil