In a trivial way, perhaps you can specify something like:
SELECT * WHERE {
<subject-1> ?property ?object
OPTIONAL {
?object ?subProperty ?subObject .
FILTER (isBlank(?object))
}
}
This assumes nothing about structure and may perform badly.
On Fri, Apr 14, 2017 at 4:17 PM, Laura Morales <[email protected]> wrote:
> If I have these nquands (in Turtle syntax)
>
>
> <subject-1>
> ns:name "My name" ;
> ns:address [
> ns:street "Street name" ;
> ns:number "42" .
> ] .
>
> <subject-2>
> ns:name "Another name" ;
> ns:address [
> ns:street "Another street" ;
> ns:number "24" .
> ] .
>
> etc....
>
>
> here, ns:address links to blank nodes. What I'd like to do is "SELECT
> everything about <subject-1>", but if I do a SELECT on <subject-1> what I
> get in return is something like
>
> {
> {
> "s": <subject-1>
> "p": ns:name
> "o": "My name"
> }
> {
> "s": <subject-1>
> "p": ns:address
> "o": "name-of-the-blank-node"
> }
> }
>
> so I have to perform another query to retrieve the properties of
> "name-of-the-blank-node". How can I retrieve all information in one single
> query instead (= subject's name + full address instead of a blank node id)?
>
