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Neo4jBuilder.py
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import warnings
warnings.filterwarnings("ignore")
import json
from tqdm import tqdm
from neo4j import GraphDatabase
import time
with open('../../data/graph/graph.json') as file:
data = json.load(file)
class Neo4jHandler:
def __init__(self, uri, user, password):
self.driver = GraphDatabase.driver(uri, auth=(user, password))
self.session = self.driver.session()
def close(self):
self.session.close()
self.driver.close()
def create_node(self, entity_name, entity_type=None):
for i in range(3):
try:
if entity_type:
query = f"MERGE (n:`{entity_type}` {{name: $name}})"
else:
query = "MERGE (n {name: $name})"
self.session.run(query, name=entity_name)
break
except:
time.sleep(2)
def create_relationship(self, entity1_name, relation_type, entity2_name, properties=None):
for i in range(3):
try:
if properties:
props = ', '.join([f"{key}: ${key}" for key in properties.keys()])
query = f"""
MATCH (a {{name: $entity1_name}}), (b {{name: $entity2_name}})
MERGE (a)-[:`{relation_type}` {{{props}}}]->(b)
"""
else:
query = f"""
MATCH (a {{name: $entity1_name}}), (b {{name: $entity2_name}})
MERGE (a)-[:`{relation_type}`]->(b)
"""
self.session.run(query, entity1_name=entity1_name, entity2_name=entity2_name, **(properties or {}))
break
except:
time.sleep(2)
if __name__ == "__main__":
uri = "bolt://localhost:7687"
user = "neo4j"
password = "password"
neo4j_handler = Neo4jHandler(uri, user, password)
for d in tqdm(data):
knowledge = f"{d['knowledge']}"
entities = d['entities']
relation = d['relation']
if knowledge != '':
neo4j_handler.create_node(entity_name=knowledge, entity_type="knowledge")
for entitiy in entities:
entity_name = f"{entitiy['entity']}"
entity_type = f"{entitiy['type']}"
description = f"{entitiy['description']}"
neo4j_handler.create_node(entity_name=entity_name, entity_type='entity')
neo4j_handler.create_node(entity_name=description, entity_type='description')
neo4j_handler.create_node(entity_name=entity_type, entity_type='type')
if entity_name and description:
neo4j_handler.create_relationship(entity1_name=entity_name, relation_type='description', entity2_name=description)
if entity_name and entity_type:
neo4j_handler.create_relationship(entity1_name=entity_name, relation_type='type', entity2_name=entity_type)
if knowledge != '' and entity_name and knowledge:
neo4j_handler.create_relationship(entity1_name=entity_name, relation_type='knowledge', entity2_name=knowledge)
for rela in relation:
if rela['entity1']:
entity1 = f"{rela['entity1']}"
if rela['entity2']:
if isinstance(rela['entity2'], list):
entity2 = [f"{item}" for item in rela['entity2']]
else:
entity2 = f"{rela['entity2']}"
neo4j_handler.create_node(entity_name=entity1, entity_type='entity')
if entity1 and entity2 and rela['relation']:
if isinstance(rela['entity1'], list):
for e1 in rela['entity1']:
neo4j_handler.create_node(entity_name=e1, entity_type='entity')
if knowledge != '':
neo4j_handler.create_relationship(entity1_name=e1, relation_type='knowledge', entity2_name=knowledge)
if isinstance(rela['entity2'], list):
for e2 in rela['entity2']:
neo4j_handler.create_node(entity_name=e2, entity_type='entity')
neo4j_handler.create_relationship(entity1_name=e1, relation_type='relation', entity2_name=f"{e2}", properties={'relation': rela['relation']})
if knowledge != '':
neo4j_handler.create_relationship(entity1_name=e2, relation_type='knowledge', entity2_name=knowledge)
else:
neo4j_handler.create_node(entity_name=entity2, entity_type='entity')
neo4j_handler.create_relationship(entity1_name=e1, relation_type='relation', entity2_name=entity2, properties={'relation': rela['relation']})
if knowledge != '':
neo4j_handler.create_relationship(entity1_name=entity2, relation_type='knowledge', entity2_name=knowledge)
else:
neo4j_handler.create_node(entity_name=entity1, entity_type='entity')
if knowledge != '':
neo4j_handler.create_relationship(entity1_name=entity1, relation_type='knowledge', entity2_name=knowledge)
if isinstance(rela['entity2'], list):
for e2 in rela['entity2']:
neo4j_handler.create_node(entity_name=e2, entity_type='entity')
neo4j_handler.create_relationship(entity1_name=entity1, relation_type='relation', entity2_name=f"{e2}", properties={'relation': rela['relation']})
if knowledge != '':
neo4j_handler.create_relationship(entity1_name=e2, relation_type='knowledge', entity2_name=knowledge)
else:
neo4j_handler.create_node(entity_name=entity2, entity_type='entity')
neo4j_handler.create_relationship(entity1_name=entity1, relation_type='relation', entity2_name=entity2, properties={'relation': rela['relation']})
if knowledge != '':
neo4j_handler.create_relationship(entity1_name=entity2, relation_type='knowledge', entity2_name=knowledge)
neo4j_handler.close()