parent
8d69e2c707
commit
2b433cdf07
@ -1,109 +0,0 @@
|
|||||||
import re
|
|
||||||
from typing import List, Tuple
|
|
||||||
|
|
||||||
from py2neo import Graph, Node, Relationship, Subgraph
|
|
||||||
from Config import Config
|
|
||||||
|
|
||||||
def clear(db):
|
|
||||||
# 清空数据
|
|
||||||
db.run("MATCH (n) DETACH DELETE n")
|
|
||||||
|
|
||||||
# 分步删除约束和索引
|
|
||||||
try:
|
|
||||||
# 删除约束
|
|
||||||
constraints = db.run("SHOW CONSTRAINTS YIELD name").data()
|
|
||||||
for constr in constraints:
|
|
||||||
db.run(f"DROP CONSTRAINT `{constr['name']}`")
|
|
||||||
|
|
||||||
# 删除索引
|
|
||||||
indexes = db.run("SHOW INDEXES YIELD name, type WHERE type <> 'LOOKUP'").data()
|
|
||||||
for idx in indexes:
|
|
||||||
db.run(f"DROP INDEX `{idx['name']}`")
|
|
||||||
except Exception as e:
|
|
||||||
print(f"删除操作失败: {e}")
|
|
||||||
|
|
||||||
def create_subgraph(db: Graph, nodes: List[Node], relations: List[Tuple[Node, str, Node]]) -> None:
|
|
||||||
"""统一创建子图"""
|
|
||||||
subgraph = Subgraph(
|
|
||||||
nodes=nodes,
|
|
||||||
relationships=[Relationship(start, rel_type, end) for start, rel_type, end in relations]
|
|
||||||
)
|
|
||||||
db.create(subgraph)
|
|
||||||
|
|
||||||
def tx_create(db: Graph, nodes: List[Node], relations: List[Tuple[Node, str, Node]]) -> None:
|
|
||||||
"""事务方式创建数据"""
|
|
||||||
try:
|
|
||||||
tx = db.begin()
|
|
||||||
subgraph = Subgraph(
|
|
||||||
nodes=nodes,
|
|
||||||
relationships=[Relationship(start, rel_type, end) for start, rel_type, end in relations]
|
|
||||||
)
|
|
||||||
tx.create(subgraph)
|
|
||||||
db.commit(tx)
|
|
||||||
except Exception as e:
|
|
||||||
db.rollback(tx)
|
|
||||||
print(f"事务操作失败: {str(e)}")
|
|
||||||
raise
|
|
||||||
|
|
||||||
class Neo4jExecutor:
|
|
||||||
# 添加类变量存储连接配置
|
|
||||||
NEO4J_URI = Config.NEO4J_URI
|
|
||||||
NEO4J_AUTH = Config.NEO4J_AUTH
|
|
||||||
|
|
||||||
def __init__(self, uri=None, auth=None):
|
|
||||||
# 使用默认配置或传入参数
|
|
||||||
self.graph = Graph(uri or self.NEO4J_URI,
|
|
||||||
auth=auth or self.NEO4J_AUTH)
|
|
||||||
|
|
||||||
@classmethod
|
|
||||||
def create_default(cls):
|
|
||||||
"""使用默认配置创建执行器"""
|
|
||||||
return cls(cls.NEO4J_URI, cls.NEO4J_AUTH)
|
|
||||||
|
|
||||||
# 新增文本执行方法
|
|
||||||
def execute_cypher_text(self, cypher_text: str) -> dict:
|
|
||||||
"""直接执行Cypher文本"""
|
|
||||||
stats = {'total': 0, 'success': 0, 'failed': 0}
|
|
||||||
try:
|
|
||||||
statements = re.split(r';\s*\n', cypher_text)
|
|
||||||
statements = [s.strip() for s in statements if s.strip()]
|
|
||||||
|
|
||||||
stats['total'] = len(statements)
|
|
||||||
|
|
||||||
for stmt in statements:
|
|
||||||
try:
|
|
||||||
self.graph.run(stmt)
|
|
||||||
stats['success'] += 1
|
|
||||||
except Exception as e:
|
|
||||||
stats['failed'] += 1
|
|
||||||
print(f"执行失败: {stmt[:50]}... \n错误: {str(e)[:100]}")
|
|
||||||
|
|
||||||
return stats
|
|
||||||
except Exception as e:
|
|
||||||
print(f"执行失败: {stmt[:100]}... \n完整错误: {str(e)}") # 原为str(e)[:100]
|
|
||||||
return stats
|
|
||||||
|
|
||||||
def execute_cypher_file(self, file_path: str) -> dict: # 确保方法名称正确
|
|
||||||
"""执行Cypher文件"""
|
|
||||||
stats = {'total': 0, 'success': 0, 'failed': 0}
|
|
||||||
try:
|
|
||||||
with open(file_path, 'r', encoding='utf-8') as f:
|
|
||||||
cypher_script = f.read()
|
|
||||||
statements = re.split(r';\s*\n', cypher_script)
|
|
||||||
statements = [s.strip() for s in statements if s.strip()]
|
|
||||||
|
|
||||||
stats['total'] = len(statements)
|
|
||||||
|
|
||||||
for stmt in statements:
|
|
||||||
try:
|
|
||||||
self.graph.run(stmt)
|
|
||||||
stats['success'] += 1
|
|
||||||
except Exception as e:
|
|
||||||
stats['failed'] += 1
|
|
||||||
print(f"执行失败: {stmt[:50]}... \n错误: {str(e)[:100]}")
|
|
||||||
|
|
||||||
return stats
|
|
||||||
|
|
||||||
except Exception as e:
|
|
||||||
print(f"文件错误: {str(e)}")
|
|
||||||
return stats
|
|
Binary file not shown.
Loading…
Reference in new issue