def command_start(self, request, initial_session):
"""
Starting point for creating a new node.
:param request:
:param initial_session:
:return:
"""
if not initial_session["payload"]:
initial_session["notes"] = [("error", "Cannot execute without a payload")]
else:
payload = StoragePayload(initial_session["payload"])
cypher_statement = payload.properties.get(str(NEO4J.cypher), None)
if cypher_statement:
records = self._command_handler.execute_cypher(cypher_statement[0])
else:
records = None
# Build up the form response containing the newly created uri
result_collection_payload = ResultCollectionPayload()
translation_map = CypherFlags.TRANSLATION_KEY.fetch_from(payload.flags)
translation_map = json.loads(translation_map)
if records:
for record in records.records:
about = None
labels = None
columns = {}
for key, value in translation_map.iteritems():
if key == str(RDF.about):
node = record[value]
about = node.uri
labels = node.labels
else:
columns[key] = record[value]
result_payload = ResultPayload(about=about, types=labels)
for key, value in columns.iteritems():
result_payload.add_column(key, value)
result_collection_payload.append(result_payload)
initial_session["payload"] = result_collection_payload.populate_payload()
return initial_session
