using current-grouping-key in a select statement

mphare · September 2nd, 2011, 04:26 PM

Hi,

I am using Saxon from OxygenXML 13.

I am looking for tables in a rather large document and I want to copy those tables to the result.

what I have is:

Code:

<xsl:for-each-group select="$repoSubTree//table[@tabType='TL1Attribute']//entry/TL1Domain/DomRedir" group-by="./XRef/@Idref">
                <xsl:comment>
                    <xsl:text>Referenced Table: </xsl:text>
                    <xsl:value-of select="current-grouping-key()"></xsl:value-of>
                </xsl:comment>
                <xsl:text>&#x0a;</xsl:text>
                <xsl:apply-templates select="$repoSubTree//table[./title/@Id='{current-grouping-key()}']" mode="buildAux"></xsl:apply-templates>
            </xsl:for-each-group>

What I'm doing in the for-each-group is going through the document and finding every place a table is referenced, and using it's Idref to find the target table. I want to copy this table to the result.

In the result, the comments: "Referenced Table: " does show the correct set of IDs, so I'm pretty sure I got that part of the logic correct.

If I substitute one of the IDs in place of the {current-grouping-key()} in the last apply-templates, I do in fact get the table copied to the result. So I'm pretty sure that other template is also working.

What I thought would happen in this is that the ID would be substituted into the @Id='{current-grouping-key()}' for me in the for-each-group logic.

current-grouping-key() is giving me what I want, but apparently I'm not feeding it to the next template correctly.

Does anyone see what I missed?

Thanks,

- m

mhkay · September 2nd, 2011, 04:40 PM

Never use curly braces within an XPath expression - they are only used to separate the XPath expression from surrounding literal text. Change

[./title/@Id='{current-grouping-key()}']

to

[./title/@Id=current-grouping-key()]

(The leading ./ is also redundant, though some people think it adds clarity)

samjudson · September 2nd, 2011, 04:55 PM

Also, if you document is large then you might consider using a <xsl:key> to speed up the lookups.

mphare · September 2nd, 2011, 05:07 PM

I wish I could find a nice emot-i-con for 'egg-on-face'

I tried exactly what you indicated and I thought it didn't work. Turns out it was because I had another typo that I didn't catch.

Works like a champ!

Thanks and have a great weekend!