Re: [rdf4j-dev] Substring implementation difference between jena, rdf4j

[Jerven Tjalling Bolleman <Jerven.Bolleman@sib.swiss>]

Hi James, All,

I didn't see an example with startingLoc less than 1.

However, one document down in the xpath-functions one there is clarity.
https://www.w3.org/TR/xpath-functions/#func-substring
And I should have looked at that first.

I think this means edge case non conformance bugs in rdf4j and virtuoso.

I will propose a fix for it in rdf4j and file a bug for it for virtuoso.

i.e. SUBSTR("ABC", 0, 2)
should return "A" because only for position 1
does fn:round(0) <= 1 and 1 < fn:round(0) + fn:round(2) hold

Regards,
Jerven


On 2019-03-24 17:38, james anderson wrote:
> > On 2019-03-24, at 15:34:55, Jerven Tjalling Bolleman 
> > <jerven.bolleman@sib.swiss> wrote:
> >
> > Hi All,
> >
> > Cross posting as this seems to be a question of spec implementation 
> > and I am not sure what the correct answer is supposed to be.
>
> look at the examples in the document which you referenced.
>
> best regards, from berlin,
> ---
> james anderson | james@xxxxxxxxx | http://dydra.com

--
Jerven Tjalling Bolleman
SIB | Swiss Institute of Bioinformatics
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Jerven.Bolleman@sib.swiss - http://www.sib.swiss