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

# -*- 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