Can you use user-defined functions in orardf: instruction?
Hello, by reading Chapter 5: Fine-Grained Access Control for RDF Data
I found this example:
OPTIONAL
{
?contr pred: hasContractValue ?val.
?contr pred: hasManager *"sys_context ( 'sa $ appctx', 'app_user_uri')"^^ orardf: instruction*
}
Seeing the kind orardf: instruction I got the question of whether you can use user-defined functions in the place where he used sys_context?
Thank you.
Pd: The translation was made from Spanish to English using Google Translator