refactor: isolate workflow queries

app/db/oper/workflow.py

@@ -66,7 +66,7 @@ class WorkflowOper(DbOper):
         新增工作流
         """
         wf = Workflow(**kwargs)
-        if not wf.get_by_name(self._db, kwargs.get("name")):
+        if not self.get_by_name(kwargs.get("name")):
             self._stage_create(wf)
             return True, "新增工作流成功"
         return False, "工作流已存在"
@@ -75,7 +75,7 @@ class WorkflowOper(DbOper):
         """
         查询单个工作流
         """
-        return Workflow.get(self._db, wid)
+        return self._execute_sync_query(lambda session: Workflow.get(session, wid))
 
     def stage_state(self, workflow_id: int, state: str) -> bool:
         """暂存工作流状态变更，不由模型方法自行提交。"""
@@ -109,49 +109,63 @@ class WorkflowOper(DbOper):
         """
         异步查询单个工作流
         """
-        return await Workflow.async_get(self._db, wid)
+        return await self._execute_async_query(
+            lambda session: Workflow.async_get(session, wid)
+        )
 
     def list(self) -> List[Workflow]:
         """
         获取所有工作流列表
         """
-        return Workflow.list(self._db)
+        return self._execute_sync_query(lambda session: Workflow.list(session))
 
     async def async_list(self) -> List[Workflow]:
         """
         异步获取所有工作流列表
         """
-        return await Workflow.async_list(self._db)
+        return await self._execute_async_query(
+            lambda session: Workflow.async_list(session)
+        )
 
     def list_enabled(self) -> List[Workflow]:
         """
         获取启用的工作流列表
         """
-        return Workflow.get_enabled_workflows(self._db)
+        return self._execute_sync_query(
+            lambda session: Workflow.get_enabled_workflows(session)
+        )
 
     def get_timer_triggered_workflows(self) -> List[Workflow]:
         """
         获取定时触发的工作流列表
         """
-        return Workflow.get_timer_triggered_workflows(self._db)
+        return self._execute_sync_query(
+            lambda session: Workflow.get_timer_triggered_workflows(session)
+        )
 
     def get_event_triggered_workflows(self) -> List[Workflow]:
         """
         获取事件触发的工作流列表
         """
-        return Workflow.get_event_triggered_workflows(self._db)
+        return self._execute_sync_query(
+            lambda session: Workflow.get_event_triggered_workflows(session)
+        )
 
     def get_by_name(self, name: str) -> Workflow:
         """
         按名称获取工作流
         """
-        return Workflow.get_by_name(self._db, name)
+        return self._execute_sync_query(
+            lambda session: Workflow.get_by_name(session, name)
+        )
 
     async def async_get_by_name(self, name: str) -> Optional[Workflow]:
         """
         异步按名称获取工作流
         """
-        return await Workflow.async_get_by_name(self._db, name)
+        return await self._execute_async_query(
+            lambda session: Workflow.async_get_by_name(session, name)
+        )
 
     async def stage_create(self, payload: Mapping[str, Any]) -> Workflow:
         """暂存新工作流，不在操作器内提交事务。"""