一、适配器模式定义
将一个类的接口转换成另外一个接口，适配器模式使得原本由于接口不兼容，而不能在一起工作的哪些类能够在一起工作。
二、python 实现
1 import string
2 import cPickle as p
3 import datetime
4 import os
5 class LogModel:
6 logId=""
7 operateUser=""
8 operateTime=""
9 logContent=""
10
11 def __init__(self,id,user,time,content):
12 self.logId=id
13 self.operateUser=user
14 self.operateTime=time
15 self.logContent=content
16
17 def setLogId(self,id):
18 self.logId=id
19 def setOperateUser(self,user):
20 self.operateUser=user
21 def setOperateTime(self,time):
22 self.operateTime=time
23 def setLogContent(self,content):
24 self.logContent=content
25 def getLogId(self):
26 return self.logId
27 def getOperateUser(self):
28 return self.operateUser
29 def getOperateTime(self):
30 return self.operateTime
31 def getLogContent(self):
32 return self.logContent
33 def toString(self):
34 return "logId=%s,operateUser=%s,operateTime=%s,logContent=%s" %(self.logId,self.operateUser,self.operateTime,self.logContent)
35
36 class LogFileOperateApi:
37 def readFile(self):
38 pass
39 def WriteLogFile(self,list):
40 pass
41 class LogFileOperate(LogFileOperateApi):
42 LogFilePath="AdapterLog.log"
43 def __init__(self,logFilePath):
44 if (logFilePath!=None)and(len(logFilePath.strip()) > 0):
45 self.LogFilePath=logFilePath
46 def readFile(self):
47 f = file(self.LogFilePath)#open(self.LogFilePath,‘r‘)
48 if os.stat(self.LogFilePath).st_size==0:
49 list=[]
50 else:
51 list=p.load(f)
52 f.close()
53 return list
54 def WriteLogFile(self,list):
55 f = open(self.LogFilePath, ‘w‘)
56 p.dump(list, f)
57 f.close()
58 class LogDbOperateApi:
59 def createLog(self,logModel):
60 pass
61 def updateLog(self,logModel):
62 pass
63 def removeLog(self,logModel):
64 pass
65 def getAllLog(self):
66 pass
67 class LogDbOperate(LogDbOperateApi):
68 def createLog(self,logModel):
69 print "Now LogDbOperate createLog , lm=%s" %(logModel)
70 def updateLog(self,logModel):
71 print "Now LogDbOperate updateLog , lm=%s" %(logModel)
72 def removeLog(self,logModel):
73 print "Now LogDbOperate removeLog , lm=%s" %(logModel)
74 def getAllLog(self):
75 print "Now in LogDbOperate getAllLog"
76 class TwoDirectAdapter(LogFileOperateApi,LogDbOperateApi):
77 fileLog=None
78 dbLog = None
79 def __init__(self,fileLog,dbLog):
80 self.fileLog=fileLog
81 self.dbLog=dbLog
82 def createLog(self,logModel):
83 list=self.fileLog.readFile()
84 list.append(logModel)
85 self.fileLog.WriteLogFile(list)
86 def updateLog(self,logModel):
87 list=self.fileLog.readFile()
88 for item in list:
89 if item.getLogId()==logModel.getLogId():
90 item=logModel
91 break
92 self.fileLog.WriteLogFile(list)
93 def removeLog(self,logModel):
94 list=self.fileLog.readFile()
95 for item in list:
96 if item.getLogId()==logModel.getLogId():
97 del item
98 break
99 self.fileLog.WriteLogFile(list)
100 def getAllLog(self):
101 return self.fileLog.readFile()
102 def readFile(self):
103 return self.dbLog.getAllLog()
104 def WriteLogFile(self,list):
105 for item in list:
106 self.dbLog.createLog(item)
107 #main function
108 LogFilePath="AdapterLog.log"
109 f=open(LogFilePath,‘w+‘)
110 f.truncate()
111 lml=LogModel("001","admin",datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S"),"This is a test!").toString()
112 list=[]
113 list.append(lml)
114
115 file_api= LogFileOperate("")
116 db_api= LogDbOperate()
117 file_api2=TwoDirectAdapter(file_api,db_api)
118 db_api2=TwoDirectAdapter(file_api,db_api)
119 db_api2.createLog(lml)
120
121 allLog=db_api2.getAllLog()
122 print "allLog:",
123 print allLog
124 file_api2.WriteLogFile(list)
125 file_api2.readFile()
研磨设计模式解析及python代码实现——(三)适配器模式(Adapter),布布扣,bubuko.com
时间： 2024-08-24 05:13:34