file

MyFile

- myfiel_id: int+ title: string+ time: datetime+ my_folder: Folder

+ getMyinfo()+ updateMyinfo()+ changeFolder()+ copyFile()+ rubishFile()

PubFile

- pubfile_id: int- description: string- status: string - time: datetime- last_version: int

+ getStatus()* getInfo()+ getAllversion()+ updateInfo()+ lockFile()+ unlockFile()+ getLockinfo()

Category

- id: int+ name: string

+ addCategory()+ editCategory()+ deleteCategory()

Lock

+ locker: User+ locktime: datetime

File

+ filename: string+ size: string

- __init__(self)+ upload()+ download()+ delete()

Storage

+ deleteFile()+ downloadFile()+ folderPath()+ searchFile()+ uploadFile()

Folder

- fold_id: int- foldname: string+ parentfold: Folder

+ newFolder()+ editFolder()+ deleteFolder()+ copyFolder()