研磨设计模式解析及python代码实现——(三)适配器模式(Adapter)

  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()