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Re: [xsl] Re: XPath as a stand-alone programming language


Subject: Re: [xsl] Re: XPath as a stand-alone programming language
From: pgfearo@xxxxxxxxxxxxxx
Date: Wed, 24 Oct 2012 21:21:21 +0100

Perhaps small standalone processors give added flexibility for asynchronous or
multi- threaded solutions also?

Sent from my iPad

On 24 Oct 2012, at 20:22, Dimitre Novatchev <dnovatchev@xxxxxxxxx> wrote:

>> We don't often hear from people using XPath but not (XSLT|XQuery), even
>> though it is obviously a frequent thing to do.
>>
>> Liam
>
> Actually, the existence of XPath processors can greatly benefit  the
> development of both XSLT and XQuery processors.
>
> It is easy to imagine XPath processors implementing a standard
> interface so that any of them can be simply plugged in into any XSLT
> or XQuery processor that is being developed -- not unlike the way an
> XML parser is plugged in and in many cases substitutable by another
> XML parser.
>
>
> For example:
>
> "If you don't supply a parser, Saxon will select one using the JAXP
> mechanisms, specifically, the system property
> javax.xml.parsers.DocumentBuilderFactory"
>
> from the Saxon documentation:
> http://saxon.sourceforge.net/saxon7.0/api-guide.html
>
> Having such ready XPath components is going to make the development of
> an XSLT/XQuery processor much faster and easier.
>
> Cheers,
>
> Dimitre.
>
> On Wed, Oct 24, 2012 at 11:55 AM, Liam R E Quin <liam@xxxxxx> wrote:
>> On Wed, 2012-10-24 at 08:31 -0700, Dimitre Novatchev wrote:
>>
>>> As Liam noted, another good to have feature in XPath would be
>>> namespace definition support and probably ways for defining the
>>> initial context.
>>
>> I tried to get the XQuery and XSLT WGs interested in the idea of some
>> sort of 'bind expression', e.g.
>>  use prefix h = "some uri", i = "some uri" in h:/hello/i:invisible
>> but they went instead down the road of EQNames, which are easier for
>> machine generation of paths but harder for humans writing paths.
>>
>> We don't often hear from people using XPath but not (XSLT|XQuery), even
>> though it is obviously a frequent thing to do.
>>
>> Liam
>>
>> --
>> Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/
>> Pictures from old books: http://fromoldbooks.org/
>> Ankh: irc.sorcery.net irc.gnome.org freenode/#xml
>> Co-author, 5th edition of "Beginning XML", Wrox, Summer 2012
>>
>
>
>
> --
> Cheers,
> Dimitre Novatchev
> ---------------------------------------
> Truly great madness cannot be achieved without significant intelligence.
> ---------------------------------------
> To invent, you need a good imagination and a pile of junk
> -------------------------------------
> Never fight an inanimate object
> -------------------------------------
> To avoid situations in which you might make mistakes may be the
> biggest mistake of all
> ------------------------------------
> Quality means doing it right when no one is looking.
> -------------------------------------
> You've achieved success in your field when you don't know whether what
> you're doing is work or play
> -------------------------------------
> Facts do not cease to exist because they are ignored.
> -------------------------------------
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> write all patents, too? :)
> -------------------------------------
> I finally figured out the only reason to be alive is to enjoy it.


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