def publish(obj, model, oml, rdfstore):
gr = Graph()
# import pdb; pdb.set_trace()
# ns_mgr = NamespaceManager(Graph())
# gr.namespace_manager = ns_mgr
try:
gr = build_rdf(gr, obj, oml, False)
except Exception as e:
return HttpResponse("Error during serialisation: " + str(e),
status=500)
for ns in _nslist.keys():
gr.namespace_manager.bind(str(ns),
namespace.Namespace(str(_nslist[ns])),
override=False)
# curl -X POST -H "Content-Type: text/turtle" -d @- http://192.168.56.151:8080/marmotta/import/upload?context=http://mapstory.org/def/featuretypes/gazetteer
resttgt = "".join(
(rdfstore['server'], _resolveTemplate(rdfstore['target'], model, obj)))
if rdfstore['server_api'] == "RDF4JREST":
return _rdf4j_push(rdfstore, resttgt, model, obj, gr)
elif rdfstore['server_api'] == "LDP":
return _ldp_push(rdfstore, resttgt, model, obj, gr)
else:
return HttpResponse("Unknown server API", status=500)
def _tordf(request,model,id,key):
if request.GET.get('pdb') :
import pdb; pdb.set_trace()
format = request.GET.get('_format')
if format not in ('turtle','json-ld'):
if format == 'json':
format = "json-ld"
else:
format = "turtle"
# find the model type referenced
try:
(app,model) = model.split('.')
ct = ContentType.objects.get(app_label=app,model=model)
except:
ct = ContentType.objects.get(model=model)
if not ct :
raise Http404("No such model found")
oml = ObjectMapping.objects.filter(content_type=ct)
if not oml :
return HttpResponse("Model not serialisable to RDF", status=410 )
if id :
obj = get_object_or_404(ct.model_class(), pk=id)
else :
try:
obj = ct.model_class().objects.get_by_natural_key(key)
except Exception as e:
try:
(prefix,term) = key.split(':')
ns = Namespace.objects.get(prefix=prefix)
urikey = "".join((ns.uri,term))
obj = ct.model_class().objects.get_by_natural_key(urikey)
except Exception as e2:
raise e
# ok so object exists and is mappable, better get down to it..
includemembers = False
gr = Graph()
# import pdb; pdb.set_trace()
# ns_mgr = NamespaceManager(Graph())
# gr.namespace_manager = ns_mgr
try:
gr = build_rdf(gr, obj, oml, includemembers)
except Exception as e:
raise Http404("Error during serialisation: " + str(e) )
for ns in _nslist.keys() :
gr.namespace_manager.bind( str(ns), namespace.Namespace(str(_nslist[ns])), override=False)
return HttpResponse(content_type="text/turtle", content=gr.serialize(format=format))
def publish(obj, model, oml, rdfstore ):
gr = Graph()
# import pdb; pdb.set_trace()
# ns_mgr = NamespaceManager(Graph())
# gr.namespace_manager = ns_mgr
try:
gr = build_rdf(gr, obj, oml, False)
except Exception as e:
raise Exception("Error during serialisation: " + str(e) )
for ns in _nslist.keys() :
gr.namespace_manager.bind( str(ns), namespace.Namespace(str(_nslist[ns])), override=False)
# curl -X POST -H "Content-Type: text/turtle" -d @- http://192.168.56.151:8080/marmotta/import/upload?context=http://mapstory.org/def/featuretypes/gazetteer
return push_to_store( None, model, obj, gr )
def as_resource(gr,curie) :
cleaned = dequote(curie)
if cleaned[0:4] == 'http' :
return URIRef(cleaned)
# this will raise error if not valid curie format
try:
(ns,value) = cleaned.split(":",2)
except:
return URIRef(cleaned) # just have to assume its not a problem - URNs are valid uri.s
# raise ValueError("value not value HTTP or CURIE format %s" % curie)
try :
nsuri = Namespace.getNamespace(ns)
if nsuri :
gr.namespace_manager.bind( str(ns), namespace.Namespace(nsuri.uri), override=False)
return URIRef("".join((nsuri.uri,value)))
else :
return URIRef(cleaned)
except:
raise ValueError("prefix " + ns + "not recognised")
# You should have received a copy of the GNU General Public License
# along with Kochief. If not, see <http://www.gnu.org/licenses/>.
import rdflib.graph as rg
import rdflib.namespace as ns
import rdflib.term as rt
import django.conf as conf
DB_MAP = {
'mysql': 'MySQL',
'postgresql': 'PostgreSQL',
'postgresql_psycopg2': 'PostgreSQL',
'sqlite3': 'SQLite',
}
LOCALNS = ns.Namespace(conf.settings.LOCALNS)
STORE_GRAPH = rg.ConjunctiveGraph(DB_MAP[conf.settings.DATABASE_ENGINE],
identifier=LOCALNS)
# TODO: graph configuration for mysql/postgresql
STORE_GRAPH.open(conf.settings.DATABASE_NAME, create=True)
class ResourceManager(object):
"""Manager for resource objects."""
def all(self):
return STORE_GRAPH
def filter(self, sparql_query):
return STORE_GRAPH.query(sparql_query)
def get(self, id):