How do I use SPARUL to change a selection of property values from URI References to Literals?
Assume a given graph where triples are comprised of property values that are mixed across URI References and Typed Literals as exemplified by the results of the query below:SELECT DISTINCT ?sa ?oa
FROM <http://ucb.com/nbeabase>
WHERE
{
?sa a <http://ucb.com/nbeabase/resource/Batch> .
?sa <http://ucb.com/nbeabase/resource/chemAbsNo> ?oa . FILTER regex(?oa, '-','i')
}
You can use the following SPARUL pattern to harmonize the property values across relevant triples in a specific graph, as shown below:
SQL> SPARQL
INSERT INTO GRAPH <http://ucb.com/nbeabase>
{
?sa <http://ucb.com/nbeabase/resource/sampleId> `str (?oa)`
}
WHERE
{
?sa <http://ucb.com/nbeabase/resource/chemAbsNo> ?oa . FILTER regex(?oa, '-','i')
}