Hi,
I have a D2RQ mapping file annotated with ontological concepts. I use
this mapping file to start a D2R-Server and I create SPARQL queries to
interrogate my database.
I have a problem to create my SPARQL queries and more precisely I have a
problem to deal with primary key values.
When I filter the value of an attribut, I use the FILTER option of
SPARQL. But I can't use this FILTER option to filter a primary key value.
*_Example:
_*_Query with a filter option_
SELECT DISTINCT ?genotypingstudy_id_gs ?germplasm_name WHERE {
FILTER regex(?genotypingstudy_id_gs,"^.*$").
?genotypingstudy_id_genotypingstudy
vocab:genotypingstudy_id_genotypingstudy ?genotypingstudy_id_gs.
?genotypingstudy_id_genotypingstudy vocab:genotypingstudy_id_germplasm
?genotypingstudy_id_germplasm.
?genotypingstudy_id_germplasm vocab:germplasm_name ?germplasm_name.
}
_SQL model_
genotypingstudy(_id_genotypingstudy,_ #id_germplasm)
germplasm(_id_germplasm_, name)
Do you have any idea how to filter value of a primary key into a SPARQL
query?
Regards
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