[xquery-talk] Unusual XPath syntax question
Ghislain Fourny
ghislain.fourny at gmail.com
Mon Oct 31 10:12:56 PDT 2016
Hi Christine,
In principle, in XPath, "./." is the same as "." and returns the context item. There is a minor difference, in that "./." will return an error if the context item is not a node, but in the case of the query at hand, it should always be an element node. Replacing "./." with "." produced the same results on my side.
I'd definitely wait for Mike's answer before concluding on this though, because he'll probably see something I haven't. :-)
Kind regards,
Ghislain
> On 31 Oct 2016, at 17:52, Schwartz, Christine <christine.schwartz at ptsem.edu> wrote:
>
> Hi,
>
> I'm hoping someone on this list can clarify my conundrum.
>
> I'm working with a colleague on a writing project and one of his examples uses this XPath syntax "./." in the starts-with() function within an XSLT stylesheet. I don't know what "./." means. I would think that "." alone would be sufficient to refer to the context node.
>
> Here's the example:
>
> <xsl:for-each select="//dim:field">
> <xsl:if test="./@element='title'">
> <xsl:choose>
> <xsl:when test="starts-with(./.,'The ')">
> <datafield tag="245" ind1="1" ind2="4">
> <subfield code="a"><xsl:value-of select="."/>.</subfield>
> </datafield>
> </xsl:when>
> <xsl:when test="starts-with(./.,'An ')">
> <datafield tag="245" ind1="1" ind2="3">
> <subfield code="a"><xsl:value-of select="."/>.</subfield>
> </datafield>
> </xsl:when>
> <xsl:when test="starts-with(./.,'A ')">
> <datafield tag="245" ind1="1" ind2="2">
> <subfield code="a"><xsl:value-of select="."/>.</subfield>
> </datafield>
> </xsl:when>
> <xsl:otherwise>
> <datafield tag="245" ind1="1" ind2="0">
> <subfield code="a"><xsl:value-of select="."/>.</subfield>
> </datafield>
> Thanks,
>
> Chris
>
> Christine Schwartz
> Metadata Librarian and XML Database Administrator
> Princeton Theological Seminary
> Library
> P.O. Box 821
> Princeton, NJ 08542
> christine.schwartz at ptsem.edu
> (609) 497-7938
>
>
>
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