Re: [xsl] Integrated sort using different elements

Thanks for the feedback, Michael. I'll definitely keep that in mind for 
next time, and sorry about the confusion...
Michael Kay wrote:
> > Yup, it looks like the ones that don't sort right have empty 
> > monogr/author. Unfortunately, I have to work with the TEI as 
> > it is, as tempted as I am to tidy it up...
> >     
> Two points:
>
> (a) it really stresses the importance of showing us the input XML, rather
> than merely describing it. In this case several of us were misled by your
> description. Saying that a "field is present/absent" could mean anything,
> because "field" has no meaning in XML, but several of us read it as meaning
> the element is present/absent, not that the text node is present/absent.
>
> (b) it's easy to adapt the solution. Instead of (A, B, C, D)[1], use
> (A[normalize-space()], B[normalize-space()], C[normalize-space()],
> D[normalize-space()])[1].
>
> Michael Kay
> http://www.saxonica.com/
>
>
>   
> > ~Quinn
> >
> > Michael Kay wrote:
> >     
> > > When you talk of an element with no monogr/author, do you mean the 
> > > monogr/author element is absent, or do you mean the element 
> > >       
> > is present 
> >     
> > > and its value is empty? Being present but empty would 
> > >       
> > account for the 
> >     
> > > results you are describing.
> > >
> > > Michael Kay
> > > http://www.saxonica.com/
> > >
> > >   
> > >       
> > > > -----Original Message-----
> > > > From: Quinn Dombrowski [mailto:qdombrow(_at_)uiuc(_dot_)edu]
> > > > Sent: 19 February 2009 17:16
> > > > To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
> > > > Subject: Re: [xsl] Integrated sort using different elements
> > > >
> > > > Hi Ken,
> > > >
> > > > Thanks for the tip. A bit earlier, I tried the
> > > >
> > > > <xsl:sort select="
> > > >  ( monogr/author, analytic/author, monogr/editor, monogr/title 
> > > > )[1]"/>
> > > > and it produced some kind of weird results. First it 
> > > >         
> > listed the ones 
> >     
> > > > with analytic/author but no monogr/author. Then the ones with a 
> > > > monogr/title, and no author anywhere. Then it alphabetized all the 
> > > > ones with monogr/author. (In my smaller test set, there 
> > > >         
> > didn't happen 
> >     
> > > > to be any editors.)
> > > >
> > > > I'm not sure what's happening there, but when I did:
> > > >         <xsl:sort select="concat(monogr[1]/author[1],
> > > > analytic[1]/author[1], monogr[1]/editor[1], monogr[1]/title[1])"/> 
> > > > ([1]'s because there's sometimes multiple editions with multiple 
> > > > authors)
> > > > it sorted everything the way I needed it. I'm not sure if the data 
> > > > happens to be such that the concat() problem you mentioned doesn't 
> > > > come up, but one way or another it works.
> > > > Thanks everyone for your help! This has really been a life saver.
> > > >
> > > > ~Quinn
> > > >
> > > >
> > > > G. Ken Holman wrote:
> > > >     
> > > >         
> > > > > At 2009-02-19 10:13 -0600, Quinn Dombrowski wrote:
> > > > >       
> > > > >           
> > > > > > I'm using 2.0 (sorry, I should've mentioned that), so I'll try 
> > > > > > Michael's solution and let you know how it goes...
> > > > > >         
> > > > > >             
> > > > > Before you do so, Quinn .....
> > > > >
> > > > > At 2009-02-19 10:19 -0500, I wrote:
> > > > >       
> > > > >           
> > > > > > In XSLT 2.0, choose the first item in a sequence of many items, 
> > > > > > priority indicated by the order of your sequence:
> > > > > > <xsl:sort select="
> > > > > >  ( monogr/author, analytic/author, monogr/editor, monogr/title 
> > > > > > )[1]"/>
> > > > > >         
> > > > > >             
> > > > > At 2009-02-19 15:47 +0000, Michael Kay wrote:
> > > > >       
> > > > >           
> > > > > > Would it work to sort on the concatenation? -
> > > > > >
> > > > > > <xsl:sort select="concat(monogr/author, analytic/author, 
> > > > > > monogr/editor, monogr/title"/>
> > > > > >         
> > > > > >             
> > > > > I think the sequence solution is safer than the
> > > > >       
> > > > >           
> > > > concatenation solution
> > > >     
> > > >         
> > > > > because if more than one field is present, then the initial
> > > > >       
> > > > >           
> > > > characters
> > > >     
> > > >         
> > > > > of a following field, tacked on to the final characters of
> > > > >       
> > > > >           
> > > > a preceding
> > > >     
> > > >         
> > > > > field, will but the record out of order.
> > > > >
> > > > > Consider the following:
> > > > >
> > > > > <biblStruct id="b1">
> > > > >   <monogr>
> > > > >     <author>abc</author>
> > > > >     ...
> > > > >   <analytic>
> > > > >     <author>xyz</author>
> > > > >   ...
> > > > > <biblStruct id="b2">
> > > > >   <monogr>
> > > > >     <author>abcdef</author>
> > > > >
> > > > > Using the sequence approach would put "b1" before "b2" in
> > > > >       
> > > > >           
> > > > the result
> > > >     
> > > >         
> > > > > because "abc" is before "abcdef", while using the concatenation 
> > > > > approach would put "b2" before "b1" in the result because
> > > > >       
> > > > >           
> > > > "abcdef" is
> > > >     
> > > >         
> > > > > before "abcxyz".
> > > > >
> > > > > I hope this illustrates an important issue that was
> > > > >       
> > > > >           
> > > > neglected in your
> > > >     
> > > >         
> > > > > decision.
> > > > >
> > > > > . . . . . . . . . . Ken
> > > > >
> > > > > --
> > > > > Upcoming hands-on  XQuery, XSLT, UBL & code list training classes:
> > > > > Brussels, BE 2009-03;  Prague, CZ 2009-03, 
> > > > >           
> > http://www.xmlprague.cz 
> >     
> > > > > Training tools: Comprehensive interactive XSLT/XPath 1.0/2.0 video
> > > > > Video lesson:    http://www.youtube.com/watch?v=PrNjJCh7Ppg&fmt=18
> > > > > Video overview:  http://www.youtube.com/watch?v=VTiodiij6gE&fmt=18
> > > > > G. Ken Holman                 mailto:gkholman(_at_)CraneSoftwrights(_dot_)com
> > > > > Crane Softwrights Ltd.          http://www.CraneSoftwrights.com/s/
> > > > > Male Cancer Awareness Nov'07  http://www.CraneSoftwrights.com/s/bc
> > > > > Legal business disclaimers:  http://www.CraneSoftwrights.com/legal
> > > > >
> > > > >
> > > > >
> > > > >       
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