I have a simple Virtuoso/PL stored procedure in which I want to bind a
variable (URI) into the SPARQL cursor. BTW the purpose is to generate a
graph_group procedurally from a graph that expresses the group as
owl:imports.
create procedure create_graph_group (in graphGroup varchar
in *aggregateGraph *varchar )
{
DB.DBA.RDF_GRAPH_GROUP_DROP(graphGroup , 1);
DB.DBA.RDF_GRAPH_GROUP_CREATE (graphGroup , 1);
for (SPARQL
SELECT distinct ?graph
WHERE {
?graphGroup a owl:Ontology .
?graphGroup owl:imports* ?graph .
FILTER(?graphGroup = *?:**aggregateGraph* )
}
) do {
DB.DBA.RDF_GRAPH_GROUP_INS (graphGroup , graph);
}
return aggregateGraph ;
};
The questions I have are:
1. Is the above syntax correct for a bound variable in a SPARQL cursor:
*?:**aggregateGraph*
2. In this context I need to bind an URI, not a string. How can I force
a PL variable to be of datatype SPARQL URI/IRI?
Many thanks
*Peter J. Lawrence*
*inova8*
*Providing answers for users' information questions*
*Mobile:* +1 330 631 3772 | *Phone:* +1 330 342 0582 | *UK Cell*:+44 795
563 2824 |*Skype:* PeterJLawrence
*Email:* peter.lawre...@inova8.com | *Web:* www.inova8.com
*LinkedIn: **http://www.linkedin.com/in/peterjohnlawrence
<http://www.linkedin.com/in/peterjohnlawrence>*
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