from neo4j import contextmanager
from re import escape
from django.conf import settings
manager = contextmanager.Neo4jDBConnectionManager(settings.NEO4J_RESOURCE_URI,
settings.NEO4J_USERNAME,
settings.NEO4J_PASSWORD)
def get_node(handle_id, label):
q = 'MATCH (n:%s { handle_id: {handle_id} }) RETURN n' % label # Ugly hack
try:
with manager.read as r:
for n in r.execute(q, handle_id=handle_id).fetchone():
return n
except IndexError:
return {}
def delete_node(handle_id, label):
q = '''
MATCH (n:%s { handle_id: {handle_id} })
OPTIONAL MATCH (n)-[r]-()
DELETE n, r
''' % label
with manager.transaction as w:
w.execute(q, handle_id=handle_id)
def get_unique_node(label, key, value):
q = 'MATCH (n:%s {%s: {value}}) RETURN n LIMIT 1' % (label, key)
__author__ = 'lundberg'
from neo4j import contextmanager
from re import escape
manager = contextmanager.Neo4jDBConnectionManager("http://localhost:7474")
def get_node(handle_id, label):
q = 'MATCH (n:%s { handle_id: {handle_id} }) RETURN n' % label # Ugly hack
try:
with manager.read as r:
for n in r.execute(q, handle_id=handle_id).fetchone():
return n
except IndexError:
return {}
def delete_node(handle_id, label):
q = '''
MATCH (n:%s { handle_id: {handle_id} })
OPTIONAL MATCH (n)-[r]-()
DELETE n, r
''' % label
with manager.transaction as w:
w.execute(q, handle_id=handle_id)
def get_unique_node(label, key, value):
q = 'MATCH (n:%s {%s: {value}}) RETURN n LIMIT 1' % (label, key)
with manager.read as r:
