本文整理汇总了Python中py2neo.Graph.relationship方法的典型用法代码示例。如果您正苦于以下问题：Python Graph.relationship方法的具体用法？Python Graph.relationship怎么用？Python Graph.relationship使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类py2neo.Graph的用法示例。
在下文中一共展示了Graph.relationship方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: __init__
# 需要导入模块: from py2neo import Graph [as 别名]
# 或者: from py2neo.Graph import relationship [as 别名]
class GraphDB:
def __init__(self,username, password, server, port):
'''
username = 'neo4j'
password = '*'
server = 'localhost'
port = '7474'
'''
self.username = username
self.password = password
self.server = server
self.port = port
self.con_url = 'http://'+username+':'+password+'@'+server+':'+port+'/db/data/'
self.graph = Graph(self.con_url)
##TODO: move these to constants.py when IPYTHON not required
self.metaprops = {
'RESOLVEDUUID':'_resolvedWithUUID_',
'RESOLVEDRELID':'_resolvedWithRELID_',
'RESOLVEDHENID':'_resolvedWithHENID_', ##for hyper edge node
'RESOLVEDHERID':'_resolvedWithHERID_', ##for hyper edge relation
}
#Done: Multiple each time want to ask something
#Else: works on old data only
##Wont use this
def getGraph(self):
return self.graph
##NOT TO BE USED
#this is how we use the intenal ids of the graph
##should we use it?? most people say no
## anyways, made the method for future use
## Use : getNodeByInternalId(graph, 152)
def getNodeByInternalId(self,id):
a = self.graph.node(id) #getting by id given internally by neo4j
a.pull()
return a
##NOT TO BE USED
## similar to above
## Use : getRelByInternalId(graph, 4)
def getRelByInternalId(self,id):
a = self.graph.relationship(id)
a.pull()
return a
def getNodeByUniqueID(self, uniquelabel, idName, idVal, isIDString=False):
##TODO: move uuid to props
query = "match (n:"+uniquelabel+" {"
if isIDString:
query = query+ idName+":'"+str(idVal)+"'}) return n"
else:
query = query+ idName+":"+str(idVal)+"}) return n"
rc = self.graph.cypher.execute(query)
return rc[0][0]
def getRelationByUniqueID(self, idName, idVal, isIDString=False):
##TODO: move uuid to props
query = "match ()-[r {"
if isIDString:
query = query+ idName+":'"+str(idVal)+"'}]->() return r"
else:
query = query+ idName+":"+str(idVal)+"}]->() return r"
rc = self.graph.cypher.execute(query)
return rc[0][0]
def isPropList(self, node, prop):
return type(node[prop]) is list
##has a counter brother in nexusapis flask app
def isValidNonMetaProp(self, propname):
if propname[0]=='_' or propname[-1]=='_':
return False
return True
##copy meta = True
def copyNode(self, node, copymeta = True, exceptions = []):
#exceptions are the props that should be included no matter what, if they have underscore or not!
naya = Node()
for label in node.labels:
naya.labels.add(label)
for prop in exceptions:
if prop in node.properties:
naya[prop] = node[prop]
for prop in node.properties:
if not copymeta:
if self.isValidNonMetaProp(prop):
naya[prop] = node[prop]
else:
naya[prop] = node[prop]
return naya
def copyNodeAsItIs(self, node):
return self.copyNode(node)
# naya = Node()
#.........这里部分代码省略.........