Appendix F: XSL Examples

The purpose of this appendix is to provide XSL examples related to the processing and transformation of the XML described in this specification. One example of XSL usage would be to convert UTC time into separate date and hour values based on the local time zone. For example, given the following XML:

<startTime>2007-12-17T06:00:00Z</startTime>

An XSL template can be used to generate tags that are desired by a consumer of the message such as the following where the hour is an hour ending in local time:

<startTime>2007-12-17T06:00:00Z</startTime>
<startDate>2007-12-17</startDate>
<startHour>1</startHour>

The following XSL example is implemented using custom functions within TIBCO BusinessWorks.

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msg="http://www.uisol.com" xmlns:tib="http://www.tibco.com/bw/xslt/custom-functions"
    exclude-result-prefixes="msg tib">

    <xsl:template match="/">
        <xsl:apply-templates/>
    </xsl:template>

    <xsl:template match="*">
        <xsl:choose>
            <xsl:when test="name() = 'msg:startTime'">
                <xsl:copy>
                    <xsl:apply-templates/>
                </xsl:copy>
                <xsl:variable name="vStartTime">
                    <xsl:value-of
                        select="tib:translate-timezone(text(), 
                        tib:get-timezone-from-dateTime(current-dateTime()))"
                    />
                </xsl:variable>
                <msg:startDate>
                    <xsl:value-of select="substring($vStartTime,1,10)"/>
                </msg:startDate>
                <msg:startTime>
                    <xsl:choose>
                        <xsl:when test="substring($vStartTime,12,2) = '00'">24</xsl:when>
                        <xsl:otherwise>
                            <xsl:value-of select="format-number(substring($vStartTime,12,2),'#0')"/>
                        </xsl:otherwise>
                    </xsl:choose>
                </msg:startTime>
            </xsl:when>
            <xsl:when test="name() = 'msg:endTime'">
                <xsl:copy>
                    <xsl:apply-templates/>
                </xsl:copy>
                <xsl:variable name="vEndTime">
                    <xsl:value-of
                        select="tib:translate-timezone(text(), 
                        tib:get-timezone-from-dateTime(current-dateTime()))"
                    />
                </xsl:variable>
                <msg:endDate>
                    <xsl:value-of select="substring($vEndTime,1,10)"/>
                </msg:endDate>
                <msg:endTime>
                    <xsl:choose>
                        <xsl:when test="substring($vEndTime,12,2) = '00'">24</xsl:when>
                        <xsl:otherwise>
                            <xsl:value-of select="format-number(substring($vEndTime,12,2),'#0')"/>
                        </xsl:otherwise>
                    </xsl:choose>
                </msg:endTime>
            </xsl:when>
            <xsl:otherwise>
                <xsl:copy>
                    <xsl:apply-templates/>
                </xsl:copy>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>
</xsl:stylesheet>

The following XSL example is implemented using Xalan:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msg="http://www.uisol.com" xmlns:lxslt="http://xml.apache.org/xslt" xmlns:mk="ext1"
    extension-element-prefixes="mk" exclude-result-prefixes="msg lxslt">

    <lxslt:component prefix="mk" functions="ConvertDate">
        <lxslt:script lang="javascript"> function ConvertDate(inYear,inMonth,inDay,inTime,inType){
            var strDate = inMonth + "/" + inDay + "/" + inYear + " " + inTime + " UTC"; var GMTDate
            = new Date(strDate); strDate = inType == "Date" ? GMTDate.getFullYear() + "-" +
            GMTDate.getMonth() + "-" + GMTDate.getDate() : GMTDate.getHours(); return
            strDate.toString(); } </lxslt:script>
    </lxslt:component>

    <xsl:template match="/">
        <xsl:apply-templates/>
    </xsl:template>

    <xsl:template match="*">
        <xsl:choose>
            <xsl:when test="(name() = 'msg:startTime' or name() = 'msg:endTime')">
                <xsl:copy>
                    <xsl:apply-templates/>
                </xsl:copy>

                <xsl:variable name="vYear">
                    <xsl:value-of select="substring(text(),1,4)"/>
                </xsl:variable>
                <xsl:variable name="vMonth">
                    <xsl:value-of select="substring(text(),6,2)"/>
                </xsl:variable>
                <xsl:variable name="vDay">
                    <xsl:value-of select="substring(text(),9,2)"/>
                </xsl:variable>
                <xsl:variable name="vTime">
                    <xsl:value-of select="substring(text(),12,8)"/>
                </xsl:variable>

                <xsl:choose>
                    <xsl:when test="name() = 'msg:startTime'">
                        <msg:startDate>
                            <xsl:value-of
                                select="mk:ConvertDate(string($vYear),string($vMonth),string($vDay),string($vTime),'Date')"
                            />
                        </msg:startDate>
                        <msg:startTime>
                            <xsl:value-of
                                select="mk:ConvertDate(string($vYear),string($vMonth),string($vDay),string($vTime),'Time')"
                            />
                        </msg:startTime>
                    </xsl:when>
                    <xsl:when test="name() = 'msg:endTime'">
                        <msg:endDate>
                            <xsl:value-of
                                select="mk:ConvertDate(string($vYear),string($vMonth),string($vDay),string($vTime),'Date')"
                            />
                        </msg:endDate>
                        <msg:endTime>
                            <xsl:value-of
                                select="mk:ConvertDate(string($vYear),string($vMonth),string($vDay),string($vTime),'Time')"
                            />
                        </msg:endTime>
                    </xsl:when>
                </xsl:choose>
            </xsl:when>
            <xsl:otherwise>
                <xsl:copy>
                    <xsl:apply-templates/>
                </xsl:copy>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>
</xsl:stylesheet>