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

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
CMU - 1, rue Michel Servet - 1211 Geneva 4
t: +41 22 379 58 85 - f: +41 22 379 58 58
Jerven.Bolleman@sib.swiss - http://www.sib.swiss



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