Neo4j是一個高性能的NoSQL圖形數(shù)據(jù)庫,它具有成熟數(shù)據(jù)庫的所有特性。在Neo4j中,你可以使用Cypher查詢語言來插入數(shù)據(jù)。關(guān)于動態(tài)條件,你可以在插入數(shù)據(jù)時使用條件語句來決定是否插入數(shù)據(jù)以及插入什么樣的數(shù)據(jù)。
以下是一個使用Python和Neo4j驅(qū)動程序插入數(shù)據(jù)的示例:
from neo4j import GraphDatabase
class Neo4jDB:
def __init__(self, uri, user, password):
self._driver = GraphDatabase.driver(uri, auth=(user, password))
def close(self):
if self._driver:
self._driver.close()
def insert_data(self, label, properties, condition):
with self._driver.session() as session:
result = session.write_transaction(self._create_node, label, properties, condition)
return result
@staticmethod
def _create_node(tx, label, properties, condition):
query = f"CREATE (n:{label} $properties) RETURN n"
result = tx.run(query, properties=properties)
node = result.single()[0]
if condition:
query = f"MATCH (n:{label}) WHERE $condition SET n += $update_properties RETURN n"
update_properties = {"property1": "new_value1", "property2": "new_value2"}
result = tx.run(query, condition=condition, update_properties=update_properties)
node = result.single()[0]
return node
if __name__ == "__main__":
uri = "bolt://localhost:7687"
user = "username"
password = "password"
db = Neo4jDB(uri, user, password)
label = "Person"
properties = {"name": "John Doe", "age": 30}
condition = True # 根據(jù)實際情況設(shè)置條件
node = db.insert_data(label, properties, condition)
print(node)
db.close()
在這個示例中,我們定義了一個Neo4jDB
類,它包含了插入數(shù)據(jù)的方法insert_data
。在插入數(shù)據(jù)時,我們可以根據(jù)條件來決定是否插入數(shù)據(jù)以及插入什么樣的數(shù)據(jù)。在這個例子中,我們只是簡單地添加了一些新的屬性,但你可以根據(jù)需要修改這個條件來滿足你的需求。