def get_label_by_name(name):
cmd = "g.V().has('name','{0}').label()".format(name)
isSucess, result = client.gremlin_client_req(cmd)
if isSucess is not True:
return isSucess, result
value = result.get('data', [])
return True, value
def get_node_by_name(label, name):
cmd = "g.V()"
if label is not None:
cmd = cmd + ".hasLabel('{0}')".format(label)
cmd = cmd + ".has('name','{0}')".format(name)
cmd = cmd + ".dedup()"
isSucess, result = client.gremlin_client_req(cmd)
if isSucess is not True:
return isSucess, result
value = result.get('data', [])
return True, value
def get_node_property_value(label, name, propertyKey):
cmd = "g.V()"
if label is not None:
cmd = cmd + ".hasLabel('{0}')".format(label)
cmd = cmd + ".has('name','{0}').values('{1}')".format(name, propertyKey)
logging.info("send: %s" % (cmd))
isSucess, result = client.gremlin_client_req(cmd)
if isSucess is not True:
return isSucess, result
value = result.get('data', [])
return True, value
def get_ndegree_object(startNode, \
edgeList, \
endNode, \
appendList = None):
#init cmd
cmd = "g.V()"
#parse start node
subjectLabel = startNode.label
subjectPropertiesList = startNode.propertiesList
#split joint subjectLabel
if not common.data_is_NULL(subjectLabel):
s_label_str = "hasLabel('{0}')".format(subjectLabel)
cmd = cmd + "." + s_label_str
#split joint subjectPorperty
if not common.data_is_NULL(subjectPropertiesList):
cmd = cmd + '.' + _package_propertiesList_(subjectPropertiesList)
#split joint predict
for edge in edgeList:
if common.data_is_NULL(edge.direction):
predictDirection = "both"
else:
predictDirection = edge.direction
if common.data_is_NULL(edge.label):
predict_str = "{0}()".format(predictDirection)
else:
predict_str = "{0}('{1}')".format(predictDirection, edge.label)
cmd = cmd + "." + predict_str
#parse start node
objectLabel = endNode.label
objectPropertiesList = endNode.propertiesList
#split joint objectLabel
if not common.data_is_NULL(objectLabel):
o_label_str = "hasLabel('{0}')".format(objectLabel)
cmd = cmd + "." + o_label_str
#split object property
if not common.data_is_NULL(objectPropertiesList):
cmd = cmd + "." + _package_propertiesList_(objectPropertiesList)
if not common.data_is_NULL(appendList):
for append in appendList:
cmd = cmd + "." + append
#send query cmd
logging.info("cmd: %s" % (cmd))
return client.gremlin_client_req(cmd)
def get_edges_by_properties(label, propertiesList):
#init cmd
cmd = "g.E()"
#split subject label
if not common.data_is_NULL(label):
label_str = "hasLabel('{0}')".format(label)
cmd = cmd + '.' + label_str
#split property
if not common.data_is_NULL(propertiesList):
cmd = cmd + '.' + _package_propertiesList_(propertiesList)
#print send cmd
logging.info("cmd: %s" % (cmd))
return client.gremlin_client_req(cmd)
def get_node_name_by_property(label, propertyKey, propertyValue):
cmd = "g.V()"
if label is not None:
cmd = cmd + ".hasLabel('{0}')".format(label)
cmd = cmd + ".has('{0}','{1}').values('name')".format(
propertyKey, propertyValue)
logging.info("send: %s" % (cmd))
isSucess, result = client.gremlin_client_req(cmd)
if isSucess is not True:
return isSucess, result
nameList = result.get('data', None)
if common.data_is_NULL(nameList):
return False, None
name = nameList[0]
return True, name
def get_common(cmd):
return client.gremlin_client_req(cmd)
def get_edges_by_label(label):
cmd = "g.E().hasLabel('{0}')".format(label)
logging.info("send: %s" % (cmd))
return client.gremlin_client_req(cmd)