I need that 2.xsl
file use function for changing date format (tag <Date>
) from file 1.xsl
. I use instruction <xsl:include>
but I don't know what I should to change.
Here is my XML file:
<?xml version="1.0" encoding="UTF-8"?>
<ClientList>
<Client>
<Name>Jan</Name>
<Surname>Kowalski</Surname>
<Date>2018-03-23</Date>
</Client>
<Client>
<Name>Piotr</Name>
<Surname>Nowak</Surname>
<Date>2018-04-25</Date>
</Client>
</ClientList>
My 1.xsl
file with function that changes date format:
<?xml version='1.0'?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<Date>
<xsl:value-of select="concat(substring(Date, 9, 2), '-', substring(Date, 6, 2), '-', substring(Date, 1, 4))"/>
</Date>
</xsl:stylesheet>
Here is my 2.xsl
file (I need that this file use function from 1.xsl
):
<?xml version='1.0'?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:include href="1.xsl"/>
<xsl:template match="/">
<ClientList>
<xsl:for-each select="ClientList/Client">
<Client>
<NameSurname>
<xsl:value-of select="concat(Name, ' ' , Surname)"/>
</NameSurname>
</Client>
</xsl:for-each>
</ClientList>
</xsl:template>
</xsl:stylesheet>
There are couple of issues with the XSLs created and rightly pointed out by @Martin Honnen in his comment related to 1.xsl
.
The <Date>
format conversion logic needs to be wrapped inside an <xsl:template>
or <xsl:function>
. Below is the updated 1.xsl
that uses <xsl:template>
.
<xsl:template name="DateConvertor">
<Date>
<xsl:value-of select="concat(substring(Date, 9, 2), '-', substring(Date, 6, 2), '-', substring(Date, 1, 4))"/>
</Date>
</xsl:template>
In 2.xsl
, you are including utils.xsl
which I believe corresponds to 1.xsl
. In this XSL, you need to invoke the template or function that you have created in the included XSL.
<xsl:template match="/">
<ClientList>
<xsl:for-each select="ClientList/Client">
<Client>
<NameSurname>
<xsl:value-of select="concat(Name, ' ', Surname)" />
</NameSurname>
<xsl:call-template name="DateConvertor" /> <!-- call the template here -->
</Client>
</xsl:for-each>
</ClientList>
</xsl:template>
EDIT - Changes for using <xsl:function>
XSLT 2.0 allows writing of own functions using <xsl:function>
. Functions can be used for performing any computational logic and they return values based on the computations. Parameters can be passed to the function using <xsl:param>
. Functions have to be associated to a namespace which is different than the XSLT namespace.
The 1.xsl
will need to be modified to include a function which accepts a single parameter of type string
and returns a value which is of type string
.
<xsl:function name="ex:DateConvertor" as="xs:string">
<xsl:param name="InputDate" as="xs:string" />
<xsl:value-of select="concat(substring($InputDate, 9, 2), '-', substring($InputDate, 6, 2), '-', substring($InputDate, 1, 4))"/>
</xsl:function>
This function is associated with namespace xmlns:ex="http://canbeanything"
. Additionally since the datatypes are being used for the parameter and return value, you need to define namespace xmlns:xs="http://www.w3.org/2001/XMLSchema"
also.
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:ex="http://canbeanything">
Changes in 2.xsl
to invoke the function ex:DateConvertor
.
Map the namespace necessary for the function.
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ex="http://canbeanything">
Call Function and pass Date
value as a parameter
<xsl:template match="/">
<ClientList>
<xsl:for-each select="ClientList/Client">
<Client>
<NameSurname>
<xsl:value-of select="concat(Name, ' ', Surname)" />
</NameSurname>
<!-- Function Call -->
<!-- passing value of 'Date' as parameter -->
<Date>
<xsl:value-of select="ex:DateConvertor(Date)" />
</Date>
</Client>
</xsl:for-each>
</ClientList>
</xsl:template>
The required output can be achieved in a single XSL, but I am assuming that this is a learning phase and the above is probably an example of <xsl:include>
.