Add a triple into a named graph via pystardog

Support
1

Hi everyone,

I'm pretty new to Stardog, and am trying to add a triple -created with rdflib- into a graph via pystardog. for example:

from rdflib import Graph, URIRef, BNode, Literal
bob = URIRef("http://example.org/people/Bob")
linda = BNode()
name = Literal("Bob")
triple = (bob, FOAF.name, name)

It seems that the

stardog.content.Raw*(content, *content_type=
"text/turtle")]

is the best content type, however, the triple can not be passes to it as object. (Error: too many values to unpack ) and when I turn it to a string (by converting to string each element in the triple and concatenating them),

stardog.exceptions.StardogException: [400] QEIVR2: Namespace prefix 'http' used but not defined [L1]

arises.
I was wondering what is the type of the input to content.Raw and what would be the best practice for adding the triple?

Thanks!

2

You have to serialize your Graph into some RDF format and then provide that to Raw:

self.conn.add(stardog.content.Raw(self.buffer.serialize(format="turtle").encode('utf-8'), stardog.content_types.TURTLE), graph_uri=MY_GRAPH)
3

Dear Michael,

Thank you for the help!