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java jvm TLAB是什么?指针碰撞解释,空闲列表解释

得一道人 2023-07-13 阅读 56

https://github.com/dahlia/awesome-sqlalchemy

Python Design Patterns
This project contains some of the most popular design patterns implemented in Python.

Repository Pattern
Service Layer
Unit of Work Pattern
Commands
Message/Events

https://github.com/madalinpopa/py-patterns

sqlite3:

CREATE TABLE DuStudentList (
StudentId INTEGER PRIMARY KEY AUTOINCREMENT,
StudentName TEXT NOT NULL,
StudentNO TEXT NOT NULL,
StudentBirthday DATETIME

);

model:

"""
StudentListInfo.py
学生类
date 2023-06-16
edit: Geovin Du,geovindu, 涂聚文
ide: PyCharm 2023.1 python 11
"""


import datetime
from datetime import date
import sys
import os
import Common

class StudentList(object):
"""
学生实体类
"""




def __init__(self,StudentId:int,StudentName:str, StudentNO:str,StudentBirthday:datetime.datetime):
"""

:param StudentName:
:param StudentNO:
:param StudentBirthday:
"""

self._StudentName=StudentName
self._StudentNO=StudentNO
self._StudentBirthday=StudentBirthday
self._StudentId=StudentId
self._age=0 #date.today().year-StudentBirthday.year #date.today().year-StudentBirthday.year #Common.Commond.calculateAge(date(StudentBirthday.year,StudentBirthday.month,StudentBirthday.day))

def __init__(self,StudentId:int,StudentName:str, StudentNO:str,StudentBirthday:datetime.datetime,age:int):
"""

:param StudentName:
:param StudentNO:
:param StudentBirthday:
"""

self._StudentName=StudentName
self._StudentNO=StudentNO
self._StudentBirthday=StudentBirthday
self._StudentId=StudentId
self._age=age #date.today().year-StudentBirthday.year #date.today().year-StudentBirthday.year #Common.Commond.calculateAge(date(StudentBirthday.year,StudentBirthday.month,StudentBirthday.day))

def __del__(self):
"""

:return:
"""

print(f"{self._StudentName}")

def setStudentName(self,StudentName):
"""

:param StudentName:
:return:
"""

self._StudentName = StudentName


def getStudentName(self):
"""

:return:
"""

return self._StudentName

def setStudentNO(self,StudentNO):
"""

:param StudentNO:
:return:
"""

self._StudentNO=StudentNO


def getStudentNO(self):
"""

:return:
"""

return self._StudentNO

def setStudentId(self,StudentId):
"""

:param StudentId:
:return:
"""

self._StudentId=StudentId


def getStudentId(self):
"""

:return:
"""

return self._StudentId

def setStudentBirthday(self,StudentBirthday):
"""

:param StudentBirthday:
:return:
"""

self._StudentBirthday = StudentBirthday
dage =date.today().year-StudentBirthday.year# Common.Commond.calculate_age(StudentBirthday)
self._age=dage


def getStudentBirthday(self):
"""

:return:
"""

return self._StudentBirthday

def setAge(self,age):
"""

:param age:
:return:
"""

dage=1 #Common.Commond.calculate_age(StudentBirthday)
self._age = age


def getAge(self):
"""

:return:
"""

return self._age

def __str__(self):
"""

:return:
"""

return f"{self._StudentId},{self._StudentName},{self._StudentNO},{self._StudentBirthday}{self._age}"

DAL:

"""
StudentDALListDAL.py
数据业务处理层 Data Access Layer (DAL)
SQL Server 数据库操作
date 2023-06-21
edit: Geovin Du,geovindu, 涂聚文
ide: PyCharm 2023.1 python 11
"""


import os
import sys
from pathlib import Path
import re
import pymssql #sql server
import Model.StudentListInfo
import UtilitieDB.SQLiteHelper
import Interface.IStudentList

class StudentDal(Interface.IStudentList.IStudentList):
"""
数据业务处理层 学生
数据库连接可以放在这里,通过配置读取数据连接参数
"""


def __init__(self):
"""
构造函数,方法
:param strserver:
:param struser:
:param strpwd:
:param strdatabase:
"""

self._strserver = ""
self._struser = ""
self._strpwd = ""
self._strdatabase =""

def selectSql(self):
"""
查询数据 self._strserver, self._struser, self._strpwd, self._strdatabase
select StudentId,StudentName,StudentNO,StudentBirthday,(julianday('now')-julianday(StudentBirthday))/365 as Age from DuStudentList;
:return:
"""


myms = UtilitieDB.SQLiteHelper.SqliteHelper()
row=myms.execute("select *,(julianday('now')-julianday(StudentBirthday))/365 as Age from DuStudentList;")
return row

def selectSqlOrder(self,order:str)->list:
"""

:param order: studenName desc/asc
:return:
"""

students=[]
myms = UtilitieDB.SQLiteHelper.SqliteHelper()
strsql=f"select *,(julianday('now')-julianday(StudentBirthday))/365 as Age from DuStudentList order by {order};"
row=myms.execute(f"select *,(julianday('now')-julianday(StudentBirthday))/365 as Age from DuStudentList order by {order};")
return row

def selectIdSql(self,StudentId:int):
"""

:param StudentId: 主键ID
:return:
"""

myms = UtilitieDB.SQLiteHelper.SqliteHelper()
row=myms.execute(f'select * from DuStudentList where StudentId={StudentId};')
return row


def addSql(self,info:Model.StudentListInfo.StudentList):
"""
添加,要考虑添加返回ID值
:param info:学生实体类
:return:
"""

myms=UtilitieDB.SQLiteHelper.SqliteHelper()
column=("StudentName","StudentNO","StudentBirthday")
vales=[info.getStudentName(),info.getStudentNO(),info.getStudentBirthday()]
myms.insertByColumnaAndValues("DuStudentList",column,vales)




def editSql(self,info:Model.StudentListInfo.StudentList):
"""

:param info:学生实体类
:return:
"""

myms = UtilitieDB.SQLiteHelper.SqliteHelper()
args = {"StudentName":f"{info.getStudentName()}","StudentNO":f"{info.getStudentNO()}","StudentBirthday":f"{info.getStudentBirthday()}"} #"StudentId":6
where = f"StudentId={info.getStudentId()}" #
#print(args,where)
myms.updateByKeyValues("DuStudentList",where,args)




def delSql(self,StudentId:int):
"""
sql语句删除
:param StudentId: 主键ID
:return:
"""

myms = UtilitieDB.SQLiteHelper.SqliteHelper()
where={f"StudentId":StudentId}
myms.deleteByKeyValues("DuStudentList",where)

IDAL

"""
IStudentList.py
接口层 Interface Data Access Layer
IDAL(Interface Data Access Layer)DAL的接口层
date 2023-06-19
edit: Geovin Du,geovindu, 涂聚文
ide: PyCharm 2023.1 python 11
"""

from __future__ import annotations
from abc import ABC, abstractmethod
import os
import sys
import Model.StudentListInfo

class IStudentList(ABC):
"""

"""


@classmethod
def __subclasshook__(cls, subclass):
return (hasattr(subclass, 'load_data_source') and
callable(subclass.load_data_source) and
hasattr(subclass, 'extract_text') and
callable(subclass.extract_text) or
NotImplemented)

@abstractmethod
def selectSql(self):
"""

:return:
"""

pass

@abstractmethod
def selectSqlOrder(self, order: str) -> list:
"""

:param order:
:return:
"""

pass

@abstractmethod
def selectIdSql(self, StudentId: int):
"""

:param StudentId:
:return:
"""

pass




@abstractmethod
def addSql(self, info: Model.StudentListInfo.StudentList):
"""

:param info:
:return:
"""

pass




@abstractmethod
def editSql(self, info: Model.StudentListInfo.StudentList):
"""

:param info:
:return:
"""

pass



@abstractmethod
def delSql(self, StudentId: int):
"""

:param StudentId:
:return:
"""

pass

BLL:

"""
StudentListBLL.py
业务层 Business Logic Layer (BLL)
date 2023-06-19
edit: Geovin Du,geovindu, 涂聚文
ide: PyCharm 2023.1 python 11
"""


import os
import sys
from pathlib import Path
import re
import pymssql #sql server
from datetime import date
import DAL.StudentListDAL
#import DAL.ConfigDAL
import Model.StudentListInfo
import Interface.IStudentList
import Factory.AbstractFactory

class StudentBll(object):
"""
学生信息操作业务类
"""



dal=Factory.AbstractFactory.AbstractFactory.createStudentList
#dal =DAL.StudentListDAL.StudentDal() #Factory.AbstractFactory.AbstractFactory.createStudentList()#
"""
类属性 操作DAL
"""

def __init__(self):
"""

"""

self._name = "geovindu"



def __del__(self):
print(f"{self._name}挂失了")

def selectSql(cls)->list:
"""
元组数据
:return: list 学生列表
"""

students = []


data = cls.dal().selectSql()
stus = list(data) # 如C# 强制转换
'''
for a in data:
for i in a:
print("II",i[0],i[1],i[2],i[3],i[4])
'''

#print(stus)
for ii in stus:
for i in ii:
students.append(Model.StudentListInfo.StudentList(i[0],i[1],i[2],i[3],i[4]))
return students

def selectSqlOrder(cls, order: str)->list:
"""
元组数据
:param order: studenName desc/asc
:return:
"""

studentsorder = []
students=[]
data = cls.dal().selectSqlOrder(order)
(studentsorder) = data # 如C# 强制转换
'''
for i in range(len(studentsorder)):
print("rrr",type(studentsorder[i]))
for duobj in studentsorder[i]:
print(type(duobj))
print(duobj)
'''

for obj in studentsorder:
for i in obj:
students.append(Model.StudentListInfo.StudentList(i[0], i[1], i[2], i[3],i[4]))
return students


def selectIdSql(cls,StudentId:int)->list:
"""

:param StudentId:学生ID
:return:
"""

students = []
data = cls.dal().selectIdSql(StudentId)
students=data
for ii in students:
for i in ii:
students.append(Model.StudentListInfo.StudentList(i[0],i[1],i[2],i[3]))
return students






def addSql(cls,info:Model.StudentListInfo.StudentList):
"""

:param info:学生实体类
:return:
"""

cls.dal.addSql(info)





def editSql(cls,info:Model.StudentListInfo.StudentList):
"""

:param info:学生实体类
:return:
"""

#print(info)
cls.dal().editSql(info)



def delSql(cls, StudentId: int):
"""

:param StudentId:
:return:
"""

cls.dal().delSql(StudentId)

GUI

"""
StudentUI.py
读文件类
date 2023-06-24
edit: Geovin Du,geovindu, 涂聚文
ide: PyCharm 2023.1 python 11

"""


import datetime
import sys
import os
from tkinter import ttk
from tkinter import *
from tkinter.ttk import *
from ttkbootstrap import Style # pip install ttkbootstrap
import random
import Model.StudentListInfo
import BLL.StudentListBLL

class StudentUi(object):

global tree
stubll = BLL.StudentListBLL.StudentBll()

def __init__(self):
self.name="geovindu"

def __del__(self):
print(f"{self.name}")

def delete(cls):
#global tree
curItem = cls.tree.focus()
val=cls.tree.item(curItem)['values'][0] #id
print(val)
print(cls.tree.selection())
cls.tree.delete(cls.tree.selection())
cls.stubll.delSql(val) #需要删除关联的数据才可以删除

#cls.stubll.delSql()

def main(cls):
"""
窗体绑定数据
:return:
"""



style=Style(theme='darkly') #定义窗口样式
window=style.master
window.title("学生管理")
# win = Tk()
screenWidth = window.winfo_screenwidth()
screenHeight = window.winfo_screenheight()
width=800
height=600
x=int((screenWidth-width)/2)
y=int((screenHeight-height)/2)
window.geometry('{}x{}+{}+{}'.format(width,height,x,y))
#Treeview 控件
cls.tree=ttk.Treeview(master=window,style='success.Treeview',height=25,show='headings')
cls.tree.pack()
#定义列
cls.tree['columns']=("StudentId","StudentName","StudentNO","StudentBirthday","Age")
#设置列属性,列不显示
cls.tree.column("StudentId",width=150,minwidth=100,anchor=S)
cls.tree.column("StudentName", width=150, minwidth=100, anchor=S)
cls.tree.column("StudentNO", width=150, minwidth=100, anchor=S)
cls.tree.column("StudentBirthday", width=150, minwidth=100, anchor=S)
cls.tree.column("Age", width=150, minwidth=100, anchor=S)
#设置表头
cls.tree.heading("StudentId",text="序号")
cls.tree.heading("StudentName", text="姓名")
cls.tree.heading("StudentNO", text="学号")
cls.tree.heading("StudentBirthday", text="出生日期")
cls.tree.heading("Age", text="年龄")
# stubll = BLL.StudentListBLL.StudentBll()
geovindu = cls.stubll.selectSqlOrder("Age asc") # list()
#treeView控件绑定数据
i=1
for Model.StudentListInfo.StudentList in geovindu:
cls.tree.insert("",i,text="2",values=(Model.StudentListInfo.StudentList.getStudentId(),Model.StudentListInfo.StudentList.getStudentName(),Model.StudentListInfo.StudentList.getStudentNO(),Model.StudentListInfo.StudentList.getStudentBirthday(),Model.StudentListInfo.StudentList.getAge()))
i+=1
#删除按钮
ttk.Button(window,text="删除",style='success,TButton',command=cls.delete).pack(side='left',padx=5,pady=10)
window.mainloop()

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