Re: [basex-talk] getting the type of an arbitrary node
Hi Christian --
Thank you! That will be useful. (and might have been what dim memory was
trying to recall, too.)
-- Graydon
On Fri, Nov 9, 2018 at 1:37 PM Christian Grün
wrote:
> Hi Graydon,
>
> Bridger has already given you a perfect reference.
>
> The XQuery Working Group decided it’s a cleaner solution to do node
> tests with typeswitch. If you want to do different things based on the
> node type, it should be a good alternative to the string-based
> approach:
>
> declare function local:node-type(
> $node as node()
> ) as xs:string {
> typeswitch($node)
> case element() return 'element'
> case comment() return 'comment'
> case attribute() return 'attribute'
> case text() return 'text'
> case document-node() return 'document-node'
> case processing-instruction() return 'processing-instruction'
> default return error()
> };
> for $node in (, )
> return local:node-type($node)
>
> Cheers,
> Christian
>
>
>
>
> On Fri, Nov 9, 2018 at 7:17 PM Graydon Saunders
> wrote:
> >
> > Hi Bridger --
> >
> > Those are helpful, thanks!
> >
> > I was hoping for a built-in (extenstion!) function on the (possibly
> mistaken) supposition that BaseX just knows that things are in the internal
> representation and would nigh-certainly be quicker to have something that
> returns that value directly.
> >
> > -- Graydon
> >
> > On Fri, Nov 9, 2018 at 1:10 PM Bridger Dyson-Smith <
> bdysonsm...@gmail.com> wrote:
> >>
> >> HI Graydon -
> >>
> >> it isn't a builtin function, but maybe the functx:node-kind() and
> functx:sequence-type() functions are what you want[1,2]?
> >> Hope that helps.
> >>
> >> Best,
> >> Bridger
> >> [1] http://www.xqueryfunctions.com/xq/functx_node-kind.html
> >> [2] http://www.xqueryfunctions.com/xq/functx_sequence-type.html
> >>
> >> On Fri, Nov 9, 2018 at 12:40 PM Graydon Saunders
> wrote:
> >>>
> >>> Hi!
> >>>
> >>> I am overcome with the cabbage-nature today, because I can't find this
> in the docs.
> >>>
> >>> I am convinced there's a way to go:
> >>>
> >>> (//some-element/node()) ! fn:node-type(.)
> >>>
> >>> and get a sequence of "element(),element(),text()..." but do not know
> what the actual function is called. (it's not node-type()!)
> >>>
> >>> How ought I to be approaching this?
> >>>
> >>> Thanks!
> >>> Graydon
> >>>
> >>>
>
Re: [basex-talk] getting the type of an arbitrary node
Graydon -
That makes sense. Maybe parsing the output of index:facets() would work? If
I'm understanding correctly, it will only work from the database level.
Bridger
On Fri, Nov 9, 2018 at 1:37 PM Christian Grün
wrote:
> Hi Graydon,
>
> Bridger has already given you a perfect reference.
>
> The XQuery Working Group decided it’s a cleaner solution to do node
> tests with typeswitch. If you want to do different things based on the
> node type, it should be a good alternative to the string-based
> approach:
>
> declare function local:node-type(
> $node as node()
> ) as xs:string {
> typeswitch($node)
> case element() return 'element'
> case comment() return 'comment'
> case attribute() return 'attribute'
> case text() return 'text'
> case document-node() return 'document-node'
> case processing-instruction() return 'processing-instruction'
> default return error()
> };
> for $node in (, )
> return local:node-type($node)
>
> Cheers,
> Christian
>
>
>
>
> On Fri, Nov 9, 2018 at 7:17 PM Graydon Saunders
> wrote:
> >
> > Hi Bridger --
> >
> > Those are helpful, thanks!
> >
> > I was hoping for a built-in (extenstion!) function on the (possibly
> mistaken) supposition that BaseX just knows that things are in the internal
> representation and would nigh-certainly be quicker to have something that
> returns that value directly.
> >
> > -- Graydon
> >
> > On Fri, Nov 9, 2018 at 1:10 PM Bridger Dyson-Smith <
> bdysonsm...@gmail.com> wrote:
> >>
> >> HI Graydon -
> >>
> >> it isn't a builtin function, but maybe the functx:node-kind() and
> functx:sequence-type() functions are what you want[1,2]?
> >> Hope that helps.
> >>
> >> Best,
> >> Bridger
> >> [1] http://www.xqueryfunctions.com/xq/functx_node-kind.html
> >> [2] http://www.xqueryfunctions.com/xq/functx_sequence-type.html
> >>
> >> On Fri, Nov 9, 2018 at 12:40 PM Graydon Saunders
> wrote:
> >>>
> >>> Hi!
> >>>
> >>> I am overcome with the cabbage-nature today, because I can't find this
> in the docs.
> >>>
> >>> I am convinced there's a way to go:
> >>>
> >>> (//some-element/node()) ! fn:node-type(.)
> >>>
> >>> and get a sequence of "element(),element(),text()..." but do not know
> what the actual function is called. (it's not node-type()!)
> >>>
> >>> How ought I to be approaching this?
> >>>
> >>> Thanks!
> >>> Graydon
> >>>
> >>>
>
Re: [basex-talk] getting the type of an arbitrary node
Hi Graydon,
Bridger has already given you a perfect reference.
The XQuery Working Group decided it’s a cleaner solution to do node
tests with typeswitch. If you want to do different things based on the
node type, it should be a good alternative to the string-based
approach:
declare function local:node-type(
$node as node()
) as xs:string {
typeswitch($node)
case element() return 'element'
case comment() return 'comment'
case attribute() return 'attribute'
case text() return 'text'
case document-node() return 'document-node'
case processing-instruction() return 'processing-instruction'
default return error()
};
for $node in (, )
return local:node-type($node)
Cheers,
Christian
On Fri, Nov 9, 2018 at 7:17 PM Graydon Saunders wrote:
>
> Hi Bridger --
>
> Those are helpful, thanks!
>
> I was hoping for a built-in (extenstion!) function on the (possibly mistaken)
> supposition that BaseX just knows that things are in the internal
> representation and would nigh-certainly be quicker to have something that
> returns that value directly.
>
> -- Graydon
>
> On Fri, Nov 9, 2018 at 1:10 PM Bridger Dyson-Smith
> wrote:
>>
>> HI Graydon -
>>
>> it isn't a builtin function, but maybe the functx:node-kind() and
>> functx:sequence-type() functions are what you want[1,2]?
>> Hope that helps.
>>
>> Best,
>> Bridger
>> [1] http://www.xqueryfunctions.com/xq/functx_node-kind.html
>> [2] http://www.xqueryfunctions.com/xq/functx_sequence-type.html
>>
>> On Fri, Nov 9, 2018 at 12:40 PM Graydon Saunders
>> wrote:
>>>
>>> Hi!
>>>
>>> I am overcome with the cabbage-nature today, because I can't find this in
>>> the docs.
>>>
>>> I am convinced there's a way to go:
>>>
>>> (//some-element/node()) ! fn:node-type(.)
>>>
>>> and get a sequence of "element(),element(),text()..." but do not know what
>>> the actual function is called. (it's not node-type()!)
>>>
>>> How ought I to be approaching this?
>>>
>>> Thanks!
>>> Graydon
>>>
>>>
Re: [basex-talk] getting the type of an arbitrary node
Hi Bridger -- Those are helpful, thanks! I was hoping for a built-in (extenstion!) function on the (possibly mistaken) supposition that BaseX just knows that things are in the internal representation and would nigh-certainly be quicker to have something that returns that value directly. -- Graydon On Fri, Nov 9, 2018 at 1:10 PM Bridger Dyson-Smith wrote: > HI Graydon - > > it isn't a builtin function, but maybe the functx:node-kind() and > functx:sequence-type() functions are what you want[1,2]? > Hope that helps. > > Best, > Bridger > [1] http://www.xqueryfunctions.com/xq/functx_node-kind.html > [2] http://www.xqueryfunctions.com/xq/functx_sequence-type.html > > On Fri, Nov 9, 2018 at 12:40 PM Graydon Saunders > wrote: > >> Hi! >> >> I am overcome with the cabbage-nature today, because I can't find this in >> the docs. >> >> I am convinced there's a way to go: >> >> (//some-element/node()) ! fn:node-type(.) >> >> and get a sequence of "element(),element(),text()..." but do not know >> what the actual function is called. (it's not node-type()!) >> >> How ought I to be approaching this? >> >> Thanks! >> Graydon >> >> >>
Re: [basex-talk] getting the type of an arbitrary node
HI Graydon - it isn't a builtin function, but maybe the functx:node-kind() and functx:sequence-type() functions are what you want[1,2]? Hope that helps. Best, Bridger [1] http://www.xqueryfunctions.com/xq/functx_node-kind.html [2] http://www.xqueryfunctions.com/xq/functx_sequence-type.html On Fri, Nov 9, 2018 at 12:40 PM Graydon Saunders wrote: > Hi! > > I am overcome with the cabbage-nature today, because I can't find this in > the docs. > > I am convinced there's a way to go: > > (//some-element/node()) ! fn:node-type(.) > > and get a sequence of "element(),element(),text()..." but do not know > what the actual function is called. (it's not node-type()!) > > How ought I to be approaching this? > > Thanks! > Graydon > > >
[basex-talk] getting the type of an arbitrary node
Hi! I am overcome with the cabbage-nature today, because I can't find this in the docs. I am convinced there's a way to go: (//some-element/node()) ! fn:node-type(.) and get a sequence of "element(),element(),text()..." but do not know what the actual function is called. (it's not node-type()!) How ought I to be approaching this? Thanks! Graydon
