比较喜欢python的装饰器, 试了下一种用法,通过装饰器来传递sql,并执行返回结果
这个应用应该比较少
为了方便起见,直接使用了ironpython, 连接的mssql server
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# -*- coding: utf-8 -*- import clr clr.AddReference( 'System.Data' ) from System.Data import * from functools import wraps conn_str = "server=localhost;database=DB_TEST;uid=sa;password=sa2008" def mssql(sql): def handler_result(rs): rst = [] while rs.Read(): rst.Add(rs[ 0 ]) return rst def decorator(fn): @wraps (fn) def wrapper( * args, * * kwargs): TheConnection = SqlClient.SqlConnection(conn_str) TheConnection. Open () try : MyAction = SqlClient.SqlCommand(sql, TheConnection) MyReader = MyAction.ExecuteReader() except Exception,ex: raise AssertionError(ex) rst_data = handler_result(MyReader) kwargs[ "sql_rst" ] = rst_data result = fn( * args, * * kwargs) MyReader.Close() TheConnection.Close() return result return wrapper return decorator @mssql (sql = "Select getdate()" ) def get_data(sql_rst = ""): print sql_rst[ 0 ] get_data() |
算是为了好玩吧,回看了下,可能实际用的机会不多