Re: RDF Template

Stéphane,

if I understand well,
you read data from Sesame database,
and need to write some Turtle from these data.

In this case, I would do the whole job in SPARQL.

Or , maybe, a raw extraction in SPARQL,
like contructing
<subject>  ?P ?O1 . ?O1 ?P1 ?O2 .

and final answer built with a rule engine like Euler [1]  in N3 rule
language.
The advantage of a rule language is that you can split your business logic
in several rules,
contrary to SPARQL.

 [1] Euler rule engine  http://eulersharp.sourceforge.net/


2014-05-10 17:01 GMT+02:00 Stéphane Campinas <stephane.campinas@deri.org>:

>  Jean-Marc, see my answer to Martynas, I gave more details. Sorry for the
> lack of details in my question.
>
>
> On 10/05/14 15:24, Jean-Marc Vanel wrote:
>
> Martynas ,
>
>  I agree ,
> it's just that I tried to answer the original question.
>
>  If Stéphane would tell us more about how the input data are ,
> we could give a better answer.
>
>
>
>
> 2014-05-10 16:21 GMT+02:00 Martynas Jusevičius <martynas@graphity.org>:
>
>> Jean-Marc,
>>
>> I would warn against using string manipulation to construct RDF. There
>> are so many things where it can go wrong -- URI escaping, literal
>> escaping, Turtle (or other) syntax etc. -- because generic string
>> routines have no knowledge of RDF concepts.
>>
>> A better idea (even if it results in longer/more complex code) is to
>> use standard RDF libraries, both to construct RDF and to serialize it
>> into desired syntax. They exist for most programming languages, e.g.
>> Jena or Sesame for Java. And the same goes for other data models, such
>> as XML.
>>
>> In case the input data is in XML form, using XSLT to transform it is a
>> viable option. I do that a lot.
>>
>>
>> Martynas
>> graphityhq.com
>>
>> On Sat, May 10, 2014 at 3:56 PM, Jean-Marc Vanel
>> <jeanmarc.vanel@gmail.com> wrote:
>> > And some languages like Scala hava a bult-in template capabilty :
>> >
>> > val id = "e1"
>> > val something = """"blabla""""
>> > val person = "john"
>> >
>> > val ttlString = s"""
>> >
>> > <http://acme.org/${id}> <http://acme.org/predicate1> ${something} .
>> > <http://acme.org/${id}> <http://acme.org/predicate2>
>> > <http://acme.org/${person}> .
>> > """
>> >
>> > ( for simple expressions like here the {} are facultative )
>> >
>> > NOTE 1 : you have to manage yourself the fact that something represents
>> a
>> > literal ,
>> > and person and id are relative URI.
>> >
>> > NOTE 2 : the Banana RDF Scala library has a nice DSL for RDF :
>> > https://github.com/w3c/banana-rdf
>> >
>> >
>> >
>> > 2014-05-10 15:13 GMT+02:00 Jean-Marc Vanel <jeanmarc.vanel@gmail.com>:
>> >
>> >> Bonjour Stéphane
>> >>
>> >> Depending on on your software environment,
>> >> you can choose one of the so called "template engines" ;
>> >> in Java there is freemarker and others :
>> >> http://java-source.net/open-source/template-engines
>> >>
>> >>
>> >> 2014-05-10 14:54 GMT+02:00 Stéphane Campinas <
>> stephane.campinas@deri.org>:
>> >>
>> >>> Hi,
>> >>>
>> >>> Do you know of any tool that creates RDF statements based on some
>> >>> template ?
>> >>>
>> >>> For example, let's imagine I have the following template:
>> >>>
>> >>> <http://acme.org/${id}> <http://acme.org/predicate1> "${something}" .
>> >>> <http://acme.org/${id}> <http://acme.org/predicate2>
>> >>> <http://acme.org/${person}> .
>> >>>
>> >>>
>> >>> where ${...} are variables. Then, by providing values for these
>> >>> variables, the following statements would be created:
>> >>>
>> >>> ${id} = e1        ${something} = blabla        ${person} = john
>> >>>
>> >>> <http://acme.org/e1> <http://acme.org/predicate1> "blabla" .
>> >>> <http://acme.org/e1> <http://acme.org/predicate2> <
>> http://acme.org/john>
>> >>> .
>> >>>
>> >>> Have you seen any such tool ?
>> >>>
>> >>> Thanks
>> >>>
>> >>> --
>> >>> Stephane Campinas
>> >>
>> >>
>> >>
>> >>
>> >> --
>> >> Jean-Marc Vanel
>> >> Déductions SARL - Consulting, services, training,
>> >> Rule-based programming, Semantic Web
>> >> http://deductions-software.com/
>> >> +33 (0)6 89 16 29 52
>> >> Twitter: @jmvanel , @jmvanel_fr ; chat: irc://
>> irc.freenode.net#eulergui
>> >>
>> >>
>> >>
>> >> --
>> >> Jean-Marc Vanel
>> >> Déductions SARL - Consulting, services, training,
>> >> Rule-based programming, Semantic Web
>> >> http://deductions-software.com/
>> >> +33 (0)6 89 16 29 52
>> >> Twitter: @jmvanel , @jmvanel_fr ; chat: irc://
>> irc.freenode.net#eulergui
>> >
>> >
>> >
>> >
>> > --
>> > Jean-Marc Vanel
>> > Déductions SARL - Consulting, services, training,
>> > Rule-based programming, Semantic Web
>> > http://deductions-software.com/
>> > +33 (0)6 89 16 29 52
>> > Twitter: @jmvanel , @jmvanel_fr ; chat: irc://irc.freenode.net#eulergui
>>
>
>
>
>  --
> Jean-Marc Vanel
> Déductions SARL - Consulting, services, training,
> Rule-based programming, Semantic Web
> http://deductions-software.com/
> +33 (0)6 89 16 29 52
> Twitter: @jmvanel , @jmvanel_fr ; chat: irc://irc.freenode.net#eulergui
>
>
> --
> Stephane Campinas
>
>


-- 
Jean-Marc Vanel
Déductions SARL - Consulting, services, training,
Rule-based programming, Semantic Web
http://deductions-software.com/
+33 (0)6 89 16 29 52
Twitter: @jmvanel , @jmvanel_fr ; chat: irc://irc.freenode.net#eulergui