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

import string
import cPickle as p
import datetime
import os
class LogModel:
logId=""
operateUser=""
operateTime=""
logContent=""

def __init__(self,id,user,time,content):
self.logId=id
self.operateUser=user
self.operateTime=time
self.logContent=content

def setLogId(self,id):
self.logId=id
def setOperateUser(self,user):
self.operateUser=user
def setOperateTime(self,time):
self.operateTime=time
def setLogContent(self,content):
self.logContent=content
def getLogId(self):
return self.logId
def getOperateUser(self):
return self.operateUser
def getOperateTime(self):
return self.operateTime
def getLogContent(self):
return self.logContent
def toString(self):
return "logId=%s,operateUser=%s,operateTime=%s,logContent=%s" %(self.logId,self.operateUser,self.operateTime,self.logContent)

class LogFileOperateApi:
def readFile(self):
pass
def WriteLogFile(self,list):
pass
class LogFileOperate(LogFileOperateApi):
LogFilePath="AdapterLog.log"
def __init__(self,logFilePath):
if (logFilePath!=None)and(len(logFilePath.strip()) > 0):
self.LogFilePath=logFilePath
def readFile(self):
f = file(self.LogFilePath)#open(self.LogFilePath,'r')
if os.stat(self.LogFilePath).st_size==0:
list=[]
else:
list=p.load(f)
f.close()
return list
def WriteLogFile(self,list):
f = open(self.LogFilePath, 'w')
p.dump(list, f)
f.close()
class LogDbOperateApi:
def createLog(self,logModel):
pass
def updateLog(self,logModel):
pass
def removeLog(self,logModel):
pass
def getAllLog(self):
pass
class LogDbOperate(LogDbOperateApi):
def createLog(self,logModel):
print "Now LogDbOperate createLog , lm=%s" %(logModel)
def updateLog(self,logModel):
print "Now LogDbOperate updateLog , lm=%s" %(logModel)
def removeLog(self,logModel):
print "Now LogDbOperate removeLog , lm=%s" %(logModel)
def getAllLog(self):
print "Now in LogDbOperate getAllLog"
class TwoDirectAdapter(LogFileOperateApi,LogDbOperateApi):
fileLog=None
dbLog = None
def __init__(self,fileLog,dbLog):
self.fileLog=fileLog
self.dbLog=dbLog
def createLog(self,logModel):
list=self.fileLog.readFile()
list.append(logModel)
self.fileLog.WriteLogFile(list)
def updateLog(self,logModel):
list=self.fileLog.readFile()
for item in list:
if item.getLogId()==logModel.getLogId():
item=logModel
break
self.fileLog.WriteLogFile(list)
def removeLog(self,logModel):
list=self.fileLog.readFile()
for item in list:
if item.getLogId()==logModel.getLogId():
del item
break
self.fileLog.WriteLogFile(list)
def getAllLog(self):
return self.fileLog.readFile()
def readFile(self):
return self.dbLog.getAllLog()
def WriteLogFile(self,list):
for item in list:
self.dbLog.createLog(item)
#main function
LogFilePath="AdapterLog.log"
f=open(LogFilePath,'w+')
f.truncate()
lml=LogModel("001","admin",datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S"),"This is a test!").toString()
list=[]
list.append(lml)

file_api= LogFileOperate("")
db_api= LogDbOperate()
file_api2=TwoDirectAdapter(file_api,db_api)
db_api2=TwoDirectAdapter(file_api,db_api)
db_api2.createLog(lml)

allLog=db_api2.getAllLog()
print "allLog:",
print allLog
file_api2.WriteLogFile(list)
file_api2.readFile()