I don't have a preferred order of precedence and no they shouldn't both be there.
So [1] is really saying get me the first string that is not the empty string or the first non-empty node? On Mon, Jan 27, 2014 at 3:14 PM, David Lee <[email protected]> wrote: > I wouldnt do > > (readingMaterial|publication)/string() > or > (xs:string(readingMaterial),xs:string(publication))[.] > > unless you absolutely knew for sure that only 1 existed. > If both exist you will get 2 strings. > > In the first place you get them in document order, > in the second case in the order specified. > > I would do > > (xs:string(readingMaterial),xs:string(publication))[1] > or just > (readingMaterial,publication)[1]/string() > > > which gives me readingMaterial if it exists, and if it doesnt exist then > publication. > but never both and always in the order of precidence I asked > > . > On 27/01/2014 14:55, Ihe Onwuka wrote: >> I am using one transformation for two different data sources with two >> different schemas. >> >> One site may call a resoure readingMaterial another site may call the >> same concept a publication, but they are otherwise similar and you may >> want to treat them as such. >> >> (xs:string(readingMaterial),xs:string(publication))[.] >> > > > > I'd probably write that as > > (readingMaterial|publication)/string() > > or if you know that exactly one of them is always there > > > > string(readingMaterial|publication) > > > David > > > ________________________________________________________________________ > The Numerical Algorithms Group Ltd is a company registered in England and > Wales with company number 1249803. The registered office is: > Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom. > > This e-mail has been scanned for all viruses by Star. The service is powered > by MessageLabs. > ________________________________________________________________________ > _______________________________________________ > [email protected] > http://x-query.com/mailman/listinfo/talk _______________________________________________ [email protected] http://x-query.com/mailman/listinfo/talk
