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Subject: Re: [xsl] How do I not ignore whitespace when sorting? From: "Mark Wilson" <drmark@xxxxxxxxxxxxxxx> Date: Sun, 18 Dec 2005 12:42:38 -0500 |
You could try using the Unicode codepoint collation
<xsl:sort... collation="http://www.w3.org/2005/xpath-functions/collation/codepoint"/>
With Saxon 8 you can map a collation URI to any Java collator class, for
example you can set up your own RuleBasedCollator. From your example,
however, I'm not convinced that a collation you design yourself is going to
work better, in general, than the standard English-language locale collation
supplied by the Java VM: you might get better results for some specific
cases, but I think you're unlikely to get better results across the board.
Michael Kay http://www.saxonica.com/
-----Original Message----- From: Mark Wilson [mailto:drmark@xxxxxxxxxxxxxxx] Sent: 18 December 2005 16:08 To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx Subject: Re: [xsl] How do I not ignore whitespace when sorting?
Thanks for a quick response Michael. I'm using Saxon 8. Will look into translate().
Mark
----- Original Message ----- From: "Michael Kay" <mike@xxxxxxxxxxxx>
To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Sunday, December 18, 2005 10:37 AM
Subject: RE: [xsl] How do I not ignore whitespace when sorting?
> Collating sequences in XSLT 1.0 are entirely implementation-defined. > There's > a strong suggestion in the spec that the system should choose a collation > appropriate to the natural language in use. Conventions for handling > spaces > and punctuation within the strings to be sorted are notoriously variable, > but ignoring spaces is quite common, and certainly not incorrect: if I > look > up "ad hoc" in a dictionary, I expect to find it between "adhesive" and > "adieu". > > In 2.0 there's a more formal mechanism for identifying the collation you > want to be used, but it's still essentially implementation-defined what > collations are available with a particular product. > > You might find that a pragmatic solution is to use translate() to modify > the > characters in the string before sorting. > > Michael Kay > http://www.saxonica.com/ > >> -----Original Message----- >> From: Mark Wilson [mailto:drmark@xxxxxxxxxxxxxxx] >> Sent: 18 December 2005 15:29 >> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx >> Subject: [xsl] How do I not ignore whitespace when sorting? >> >> Thanks for all the help with my previous question. This is my >> first week >> with XSLT, so please forgive my not knowing where to look. I >> have tracked >> down many comments on sorting, but failed to find one to answer the >> following. >> >> I am trying to sort a library subject catalog. I finally >> realized that the >> default <xsl:sort> was ignoring whitespace within the value >> of the element. >> The order I get is: >> Catalogs. Austria >> Catalogs -- Zepplins >> >> when I what I want is: >> Catalogs -- Zepplins >> Catalogs. Austria. >> ( for the *space* at the end of 'catalogs ' to file before >> the *period* at >> the end of 'catalogs.' >> >> I was able to demonstrate to myself that white space is >> ignored when I >> inserted a *space within* the word 'cat alogs' and still got >> this result: >> Catalogs. Austria >> Cat alogs -- Zepplins >> >> Since this means that everyone would have serious problems >> sorting things >> like "Art tissue" and Artisians", I assume there must be a way. >> Can I, and if so how do I, tell <xsl:sort> not to ignore >> whitespace? Do I >> need a special external colation? >> Thanks, >> Mark
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