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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Performance problem
 Ive tried to find tips on how to improve the performance of my XSL file and so far did not find something meaningful. The most time-consuming part in my xml is a big-list of items <data> <item name=abc timestamp=2004-10-11T15:49:31> <bytes> 1062207488</bytes> </item> <item name=efd timestamp=2004-10-13T15:44:31> <bytes>23457</bytes> </item> .... </data> I process the timestamp field as follow: INPUT -> 2004-10-11T15:49:31 OUTPUT -> 2004-Oct-11 15:49:31 I process the bytes field as follow: INPUT -> 1048576 OUTPUT -> 1,013MB And display it all in a table. My xsl file: <xsl:template match="data"> <table border="1" cellspacing="0" cellpadding="3"> <tr> <th>Name</th> <th>Bytes</th> <th>Time Stamp</th> </tr> <xsl:for-each select="item"> <tr> <td nowrap="1"> <xsl:value-of select="@name"/> </td> <td> <xsl:choose> <xsl:when test="bytes"> <xsl:call-template name="format-bytes"> <xsl:with-param name="bytes_cnt" select="bytes"/> </xsl:call-template> </xsl:when> <xsl:otherwise> <xsl:text> </xsl:text> </xsl:otherwise> </xsl:choose> </td> <td nowrap="1"> <xsl:call-template name="format-date"> <xsl:with-param name="date-time" select="@timestamp"/> </xsl:call-template> </td> </tr> </xsl:for-each> </table> </xsl:template> <!-- prints-out bytes count --> <xsl:variable name="Mega" select="1024 * 1024"/> <xsl:variable name="Giga" select="1024 * $Mega"/> <xsl:template name="format-bytes"> <xsl:param name="cnt_bytes" select="."/> <xsl:choose> <xsl:when test="$ cnt_bytes < 1024"><xsl:value-of select="format-number($cnt_bytes, '#,##0')"/>Bytes</xsl:when> <xsl:when test="$ cnt_bytes < $Mega"><xsl:value-of select="format-number($cnt_bytes div 1024, '#,###.##')"/>KB</xsl:when> <xsl:when test="$ cnt_bytes < $Giga"><xsl:value-of select="format-number($cnt_bytes div $Mega, '#,###.##')"/>MB</xsl:when> <xsl:when test="$ cnt_bytes"><xsl:value-of select="format-number($cnt_bytes div $Giga, '#,###.##')"/>GB</xsl:when> <xsl:otherwise><xsl:text> </xsl:text></xsl:otherwise> </xsl:choose> </xsl:template> <!-- prints-out timestamp in format : dd-mon-yy H:M:S --> <xsl:template name="format-date"> <xsl:param name="date-time" select="."/> <xsl:choose> <xsl:when test="$date-time"> <xsl:value-of select="substring($date-time, 9 ,2)"/> <xsl:text>-</xsl:text> <xsl:variable name="month" select="substring($date-time, 6 ,2)"/> <xsl:choose> <xsl:when test="$month = 1">Jan</xsl:when> <xsl:when test="$month = 2">Feb</xsl:when> <xsl:when test="$month = 3">Mar</xsl:when> <xsl:when test="$month = 4">Apr</xsl:when> <xsl:when test="$month = 5">May</xsl:when> <xsl:when test="$month = 6">Jun</xsl:when> <xsl:when test="$month = 7">Jul</xsl:when> <xsl:when test="$month = 8">Aug</xsl:when> <xsl:when test="$month = 9">Sen</xsl:when> <xsl:when test="$month = 10">Oct</xsl:when> <xsl:when test="$month = 11">Nov</xsl:when> <xsl:when test="$month = 12">Dec</xsl:when> </xsl:choose> <xsl:text>-</xsl:text> <xsl:value-of select="substring($date-time, 3 ,2)"/> <xsl:text> </xsl:text> <xsl:value-of select="substring($date-time, 12 ,8)"/> </xsl:when> <xsl:otherwise> <xsl:text> </xsl:text> </xsl:otherwise> </xsl:choose> </xsl:template> 1. How can I improve this code? 2. Should I use the <for-each> or <xsl:template match=item> ? 3. In 1/3 of the times the bytes element doesnt appears in the xml file, that is why I put a check before calling the "format-bytes" template, do you think is it best to always call the template and then check inside of the template if it exists ? 4. Do you think I should use xsl:template or xsl:function to format my timestamp/bytes ? Best Regards, ficfic _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/ 
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