On 12-03-22 02:44 PM, David Carlisle wrote:
On 22/03/2012 21:39, Martin Holmes wrote:
> HI all,
>
> As part of a small pilot project, I'm implementing a set of spelling
> normalization rules applied through XSLT 2.0 using Saxon 9. One
> operation that happens extremely frequently is a dictionary lookup;
[SNIP]
sounds like you want to use a key then the processor will almost
certainly create an efficient lookup index.
If your dictionary is in a file say dict.xml
<words>
<word>one</word>
<word>hello</word>
</words>
then
<xsl:key name="w" match="word" use="."/>
declares the index and
key('w',$word,doc('dict.xml'))
will return the word if it is in the dictionary.
That is much faster, indeed. It's still not fast -- the spellcheck
dictionary is big -- but it's interesting to see that processing it as
an XML structure with <xsl:key> is so much faster than processing it as
a string.
Cheers,
Martin
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