In the following example *drugbank*, *sider* and *dbpedia* service
operations could be executed in parallel after *dailymed* service
execution. How could I define such parallelism in an SPARQL Algebra
expression?
(project (?dgai ?sen ?dgin ?dgls)
(conditional
(conditional
(sequence
* (service <http://www4.wiwiss.fu-berlin.de/dailymed/sparql>*
(bgp
(triple <
http://www4.wiwiss.fu-berlin.de/dailymed/resource/drugs/3056> <
http://www4.wiwiss.fu-berlin.de/dailymed/resource/dailymed/activeIngredient>
?dgai)
(triple ?dgai <http://www.w3.org/2000/01/rdf-schema#label>
?dgain)
(triple <
http://www4.wiwiss.fu-berlin.de/dailymed/resource/drugs/3056> <
http://www4.wiwiss.fu-berlin.de/dailymed/resource/dailymed/genericDrug>
?gdg)
(triple <
http://www4.wiwiss.fu-berlin.de/dailymed/resource/drugs/3056> <
http://www.w3.org/2002/07/owl#sameAs> ?sa)
))
* (service <http://www4.wiwiss.fu-berlin.de/drugbank/sparql>
* (bgp (triple ?gdg <
http://www4.wiwiss.fu-berlin.de/drugbank/resource/drugbank/pharmacology>
?dgin))))
* (service <http://www4.wiwiss.fu-berlin.de/sider/sparql>
* (bgp
(triple ?sa <
http://www4.wiwiss.fu-berlin.de/sider/resource/sider/sideEffect> ?se)
(triple ?se <
http://www4.wiwiss.fu-berlin.de/sider/resource/sider/sideEffectName> ?sen)
)))
* (service <http://dbpedia.org/sparql>
* (bgp (triple ?sa <http://dbpedia.org/property/legalStatus>
?dgls)))))
Regards,
Regis.
Em 13 de junho de 2011 13:40, Regis Pires Magalhães <[email protected]
> escreveu:
> How can I allow parallel query execution in one SPARQL Algebra Expression?
> Is there some SPARQL algebra operation implemented in ARQ to do that?
> I want to manually optimize one SPARQL algebra expression executing some
> SERVICE operations in parallel.
>
> Regards,
> Regis.
>
>
