se/SE/schema/default_db_xml_cache.public/default_db/dateTime.xsl

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:system_cache__appinfo="http://biuro.biall-net.pl/xmlschema_procesy5/default_db_xml_cache/appinfo.xsd"
    xmlns:system_cache__dita="http://biuro.biall-net.pl/xmlschema_procesy5/default_db_xml_cache/dita.xsd"
    exclude-result-prefixes="xs"
    version="2.0">
    
    
    <xsl:variable name="data" select="'2017-10-10T00:00:00'"/>
   
    <xsl:variable name="data2" select="'01.02.2017'"/>
    
    
    <xsl:function name="system_cache__dita:year">
        <xsl:param name="date"/>
        <xsl:choose>
            
            <xsl:when test="string($data) castable as xs:dateTime">
                <xsl:message>#20 passed as dateTime</xsl:message>
                <xsl:value-of select="format-date(xs:date(xs:dateTime($data)),'[Y]')"/>
            </xsl:when>
            <xsl:when test="string($data) castable as xs:date">
                <xsl:message>#20 passed as date</xsl:message>
                <xsl:value-of select="format-date(xs:date($data),'[Y]')"/>
            </xsl:when>
            <!--<xsl:when test="tokenize(string($date),'\.')[3]">
                <xsl:message>#20 passed as tokenize</xsl:message>
                <xsl:value-of select="tokenize($date,'\.')[3]"/>
            </xsl:when>-->
            <xsl:otherwise>
                <xsl:message terminate="yes">#28 Error in date format for value <xsl:value-of select="$data"/>! </xsl:message>
            </xsl:otherwise>
            
        </xsl:choose>
        
        
    </xsl:function>
    
    
    
    <xsl:template name="main">
        <xsl:value-of select="$data"/>=<xsl:value-of select="system_cache__dita:year($data)"/><xsl:text>
</xsl:text>
        <xsl:value-of select="$data2"/>=<xsl:value-of select="system_cache__dita:year($data2)"/>
    </xsl:template>
</xsl:stylesheet>