current-datetime() per execution loop

iceandrews · May 5th, 2017, 01:46 PM

I understand why current-dateTime returns single value within a single XSLT, but is there any way to work around this in XSLT/XPath 2.0 ?

I have a scenario where I'd like to generate multiple xml documents and I'd like each one to get a "different" timestamp. Any options?

Code:

<xsl:template match="/">
	<xsl:for-each select="row">
		<xsl:variable name="vPROCESSDATE_REPLACE" select="format-dateTime(current-dateTime(),'[Y0001]-[M01]-[D01]T[H]:[m]:[s].[f]')"/>
			<xsl:result-document href="{$outputDir}/{$vCLAIM_NUMBER}.xml">
			<xsl:call-template name="updateXML">
				<!-- Do Stuff -->
			</xsl:call-template>
		</xsl:result-document>
	</xsl:for-each>
</xsl:template>

mhkay · May 9th, 2017, 06:19 PM

You could use an extension function that gets the actual machine timestamp. But this offers no guarantee of uniqueness because two xsl:result-document instructions might be evaluated simultaneously (the XSLT spec does not prescribe sequential execution, and some processors such as Saxon-EE will execute different instructions in parallel).

Is your proposal to use timestamps as unique identifiers for result documents merely because you think this is the easiest way to get a unique identifier, or is there actually a requirement to reflect the exact time the file was created?

iceandrews · May 10th, 2017, 08:29 AM

The requirement was that each one have a unique time stamp. I used the java include to get real time time stamps, but as you indicated, I did get duplicates.

I got creative after that. I used the position of each row in the CSV, converted it to a 1 second xs:duration and added to the current-dateTime() with each result document. Worked like a charm!

Code:

<xsl:variable name="vRowDuration" select="xs:duration(concat('PT',$vRowNumber,'.0S'))"/>

<xsl:variable name="vPROCESSDATE_REPLACE"  select="format-dateTime((xs:dateTime(current-dateTime()) + xs:dayTimeDuration($vRowDuration)),'[Y0001]-[M01]-[D01]T[H]:[m]:[s].[f]')"/>

Thanks!