def json_to_rdflib(json_object):
"""
Convert a json result entry to an :mod:`rdfLib` type.
:param dict json_object: the *JSON* object
:return: the converted value (if possible)
:rtype: :class:`rdflib.term.Literal` or :class:`rdflib.term.BNode` or :class:`rdflib.term.URIRef` or None
"""
try:
type = json_object["type"]
except KeyError:
raise ValueError("No type specified")
if type == 'uri':
return URIRef(json_object["value"])
elif type == 'literal':
if "xml:lang" in json_object:
return Literal(json_object["value"], lang=json_object['xml:lang'])
else:
return Literal(json_object["value"])
elif type == 'typed-literal':
return Literal(json_object["value"],
datatype=URIRef(json_object['datatype']))
elif type == 'bnode':
return BNode(json_object["value"])
else:
return None
def toRdfLib(term):
if type(term) is fURIRef:
return URIRef(term.getURI())
elif type(term) is fLiteral:
try:
if term.getDatatype() is None:
return Literal(term.getLabel(), lang=term.getLanguage())
else:
dtype = term.getDatatype().getURI()
if dtype.startswith('<') and dtype.endswith('>'):
dtype = dtype.strip('<>')
dtype = URIRef(dtype)
else:
dtype = URIRef(dtype)
return Literal(term.getLabel(), lang=term.getLanguage(),
datatype=dtype)
except Exception as e:
print(e)
elif type(term) is fBNode:
return BNode(term.getID())
elif type(term) in [list,tuple]:
return map(toRdfLib, term)
return term
def get_binding(node):
cnt = None
for cn in node.childNodes:
if cn.nodeType == cn.ELEMENT_NODE:
cnt = cn
break
if cnt:
txt = get_text(cnt)
if cnt.nodeName == 'uri':
return URIRef(txt)
elif cnt.nodeName == 'literal':
return Literal(txt)
elif cnt.nodeName == 'bnode':
return BNode(txt)
else:
return None
def json_to_rdflib(obj):
"""Convert a json result entry to an rdfLib type."""
try:
type = obj["type"]
except KeyError:
raise ValueError("No type specified")
if type == 'uri':
return URIRef(obj["value"])
elif type == 'literal':
if "xml:lang" in obj:
return Literal(obj["value"], lang=obj['xml:lang'])
else:
return Literal(obj["value"])
elif type == 'typed-literal':
return Literal(obj["value"], datatype=URIRef(obj['datatype']))
elif type == 'bnode':
return BNode(obj["value"])
else:
return None
else:
dtype = term.getDatatype().getURI()
if dtype.startswith('<') and dtype.endswith('>'):
dtype = dtype.strip('<>')
dtype = URIRef(dtype)
else:
dtype = URIRef(dtype)
return Literal(term.getLabel(),
lang=term.getLanguage(),
datatype=dtype)
except Exception, e:
print e
elif type(term) is fBNode:
return BNode(term.getID())
elif type(term) in [list, tuple]:
return map(toRdfLib, term)
return term
def toSesame(term, factory):
if type(term) in (URIRef, Namespace):
return factory.createURI(unicode(term))
elif type(term) is Literal:
return factory.createLiteral(unicode(term),
datatype=term.datatype,
language=term.language)
elif type(term) is BNode:
return factory.createBNode(unicode(term))
elif type(term) in [list, tuple]: