2021.11 #50
@ -8,6 +8,7 @@ from cpl_core.database.connection.database_connection_abc import \
|
||||
from cpl_core.database.database_settings import DatabaseSettings
|
||||
from cpl_core.utils import CredentialManager
|
||||
from mysql.connector.abstracts import MySQLConnectionAbstract
|
||||
from mysql.connector.cursor import MySQLCursorBuffered
|
||||
|
||||
|
||||
class DatabaseConnection(DatabaseConnectionABC):
|
||||
@ -17,15 +18,30 @@ class DatabaseConnection(DatabaseConnectionABC):
|
||||
def __init__(self):
|
||||
DatabaseConnectionABC.__init__(self)
|
||||
|
||||
self._database_server: Optional[MySQLConnectionAbstract] = None
|
||||
self._database: Optional[MySQLConnectionAbstract] = None
|
||||
self._cursor: Optional[MySQLCursorBuffered] = None
|
||||
|
||||
@property
|
||||
def server(self) -> MySQLConnectionAbstract:
|
||||
return self._database_server
|
||||
return self._database
|
||||
|
||||
@property
|
||||
def cursor(self) -> MySQLCursorBuffered:
|
||||
return self._cursor
|
||||
|
||||
def connect(self, database_settings: DatabaseSettings):
|
||||
try:
|
||||
self._database_server = sql.connect(
|
||||
connection = sql.connect(
|
||||
host=database_settings.host,
|
||||
user=database_settings.user,
|
||||
passwd=CredentialManager.decrypt(database_settings.password),
|
||||
charset=database_settings.charset,
|
||||
use_unicode=database_settings.use_unicode,
|
||||
buffered=database_settings.buffered,
|
||||
auth_plugin=database_settings.auth_plugin
|
||||
)
|
||||
connection.cursor().execute(f'CREATE DATABASE IF NOT EXISTS `{database_settings.database}`;')
|
||||
self._database = sql.connect(
|
||||
host=database_settings.host,
|
||||
user=database_settings.user,
|
||||
passwd=CredentialManager.decrypt(database_settings.password),
|
||||
@ -35,6 +51,7 @@ class DatabaseConnection(DatabaseConnectionABC):
|
||||
buffered=database_settings.buffered,
|
||||
auth_plugin=database_settings.auth_plugin
|
||||
)
|
||||
self._cursor = self._database.cursor()
|
||||
Console.set_foreground_color(ForegroundColorEnum.green)
|
||||
Console.write_line(f'[{__name__}] Connected to database')
|
||||
Console.set_foreground_color(ForegroundColorEnum.default)
|
||||
|
@ -2,6 +2,7 @@ from abc import ABC, abstractmethod
|
||||
|
||||
from cpl_core.database.database_settings import DatabaseSettings
|
||||
from mysql.connector.abstracts import MySQLConnectionAbstract
|
||||
from mysql.connector.cursor import MySQLCursorBuffered
|
||||
|
||||
|
||||
class DatabaseConnectionABC(ABC):
|
||||
@ -14,6 +15,10 @@ class DatabaseConnectionABC(ABC):
|
||||
@abstractmethod
|
||||
def server(self) -> MySQLConnectionAbstract: pass
|
||||
|
||||
@property
|
||||
@abstractmethod
|
||||
def cursor(self) -> MySQLCursorBuffered: pass
|
||||
|
||||
@abstractmethod
|
||||
def connect(self, database_settings: DatabaseSettings):
|
||||
r"""Connects to a database by connection string
|
||||
|
@ -8,6 +8,7 @@ from cpl_core.database.connection.database_connection_abc import \
|
||||
from cpl_core.database.context.database_context_abc import DatabaseContextABC
|
||||
from cpl_core.database.database_settings import DatabaseSettings
|
||||
from cpl_core.database.table_abc import TableABC
|
||||
from mysql.connector.cursor import MySQLCursorBuffered
|
||||
|
||||
|
||||
class DatabaseContext(DatabaseContextABC):
|
||||
@ -22,21 +23,22 @@ class DatabaseContext(DatabaseContextABC):
|
||||
DatabaseContextABC.__init__(self, database_settings)
|
||||
|
||||
self._db: DatabaseConnectionABC = DatabaseConnection()
|
||||
self._cursor: Optional[str] = None
|
||||
self._tables: list[TableABC] = TableABC.__subclasses__()
|
||||
|
||||
@property
|
||||
def cursor(self):
|
||||
return self._cursor
|
||||
def cursor(self) -> MySQLCursorBuffered:
|
||||
return self._db.cursor
|
||||
|
||||
def connect(self, database_settings: DatabaseSettings):
|
||||
self._db.connect(database_settings)
|
||||
c = self._db.server.cursor()
|
||||
self._cursor = c
|
||||
Console.write_line(f"Ts: {self._tables}")
|
||||
for table in self._tables:
|
||||
Console.write_line(f"{table}, {table.create_string}")
|
||||
c.execute(table.create_string)
|
||||
Console.write_line(f"{table}, {table.get_create_string()}")
|
||||
self._db.cursor.execute(table.get_create_string())
|
||||
|
||||
def save_changes(self):
|
||||
self._db.server.commit()
|
||||
|
||||
def select(self, statement: str) -> list:
|
||||
self._db.cursor.execute(statement)
|
||||
return self._db.cursor.fetchall()
|
||||
|
@ -1,6 +1,7 @@
|
||||
from abc import ABC, abstractmethod
|
||||
|
||||
from cpl_core.database.database_settings import DatabaseSettings
|
||||
from mysql.connector.cursor import MySQLCursorBuffered
|
||||
|
||||
|
||||
class DatabaseContextABC(ABC):
|
||||
@ -11,8 +12,8 @@ class DatabaseContextABC(ABC):
|
||||
pass
|
||||
|
||||
@property
|
||||
@abstractmethod
|
||||
def cursor(self): pass
|
||||
def cursor(self) -> MySQLCursorBuffered:
|
||||
return self._cursor
|
||||
|
||||
@abstractmethod
|
||||
def connect(self, database_settings: DatabaseSettings):
|
||||
@ -24,6 +25,21 @@ class DatabaseContextABC(ABC):
|
||||
"""
|
||||
pass
|
||||
|
||||
@abstractmethod
|
||||
def save_changes(self):
|
||||
r"""Saves changes of the database"""
|
||||
pass
|
||||
|
||||
@abstractmethod
|
||||
def select(self, statement: str) -> list:
|
||||
r"""Runs SQL Statements
|
||||
|
||||
Parameter
|
||||
---------
|
||||
statement: :class:`str`
|
||||
|
||||
Returns
|
||||
-------
|
||||
list: Fetched list of selected elements
|
||||
"""
|
||||
pass
|
||||
|
@ -18,9 +18,9 @@ class TableABC(ABC):
|
||||
def LastModifiedAt(self) -> datetime:
|
||||
return self._modified_at
|
||||
|
||||
@property
|
||||
@staticmethod
|
||||
@abstractmethod
|
||||
def create_string(self) -> str: pass
|
||||
def get_create_string() -> str: pass
|
||||
|
||||
@property
|
||||
@abstractmethod
|
||||
|
@ -26,10 +26,12 @@ class Application(ApplicationABC):
|
||||
self._logger.debug(__name__, f'Customer: {self._configuration.environment.customer}')
|
||||
|
||||
user_repo: UserRepo = self._services.get_service(UserRepoABC)
|
||||
if len(user_repo.get_users()) == 0:
|
||||
user_repo.add_test_user()
|
||||
|
||||
Console.write_line('Users:')
|
||||
for user in user_repo.get_users():
|
||||
Console.write_line(user.UserId, user.Name, user.CityId, user.City.CityId, user.City.Name, user.City.ZIP)
|
||||
Console.write_line(user.UserId, user.Name, user.City)
|
||||
|
||||
Console.write_line('Cities:')
|
||||
for city in user_repo.get_cities():
|
||||
|
@ -3,44 +3,45 @@ from cpl_core.database import TableABC
|
||||
|
||||
class CityModel(TableABC):
|
||||
|
||||
def __init__(self, name: str, zip_code: str):
|
||||
self.CityId = 0
|
||||
def __init__(self, name: str, zip_code: str, id = 0):
|
||||
self.CityId = id
|
||||
self.Name = name
|
||||
self.ZIP = zip_code
|
||||
|
||||
@property
|
||||
def create_string(self) -> str:
|
||||
return f"""
|
||||
@staticmethod
|
||||
def get_create_string() -> str:
|
||||
return str(f"""
|
||||
CREATE TABLE IF NOT EXISTS `City` (
|
||||
`CityId` INT(30) NOT NULL AUTO_INCREMENT,
|
||||
`Name` VARCHAR NOT NULL,
|
||||
`ZIP` VARCHAR NOT NULL,
|
||||
`Name` VARCHAR(64) NOT NULL,
|
||||
`ZIP` VARCHAR(5) NOT NULL,
|
||||
PRIMARY KEY(`CityId`)
|
||||
);
|
||||
"""
|
||||
""")
|
||||
|
||||
@property
|
||||
def insert_string(self) -> str:
|
||||
return f"""
|
||||
return str(f"""
|
||||
INSERT INTO `City` (
|
||||
`Name`, `ZIP`
|
||||
) VALUES (
|
||||
'{self.Name}',
|
||||
'{self.ZIP}'
|
||||
);
|
||||
"""
|
||||
""")
|
||||
|
||||
@property
|
||||
def udpate_string(self) -> str:
|
||||
return f"""
|
||||
return str(f"""
|
||||
UPDATE `City`
|
||||
SET `Name` = '{self.Name}',
|
||||
`ZIP` = '{self.ZIP}',
|
||||
WHERE `CityId` = {self.Id};
|
||||
"""
|
||||
""")
|
||||
|
||||
@property
|
||||
def delete_string(self) -> str:
|
||||
return f"""
|
||||
return str(f"""
|
||||
DELETE FROM `City`
|
||||
WHERE `CityId` = {self.Id};
|
||||
"""
|
||||
""")
|
||||
|
@ -5,46 +5,46 @@ from .city_model import CityModel
|
||||
|
||||
class UserModel(TableABC):
|
||||
|
||||
def __init__(self, name: str, city: CityModel):
|
||||
self.UserId = 0
|
||||
def __init__(self, name: str, city: CityModel, id = 0):
|
||||
self.UserId = id
|
||||
self.Name = name
|
||||
self.CityId = city.CityId
|
||||
self.CityId = city.CityId if city is not None else 0
|
||||
self.City = city
|
||||
|
||||
@property
|
||||
def create_string(self) -> str:
|
||||
return f"""
|
||||
@staticmethod
|
||||
def get_create_string() -> str:
|
||||
return str(f"""
|
||||
CREATE TABLE IF NOT EXISTS `User` (
|
||||
`UserId` INT(30) NOT NULL AUTO_INCREMENT,
|
||||
`Name` VARCHAR NOT NULL,
|
||||
`CityId` VARCHAR NOT NULL,
|
||||
`Name` VARCHAR(64) NOT NULL,
|
||||
`CityId` INT(30),
|
||||
FOREIGN KEY (`UserId`) REFERENCES City(`CityId`),
|
||||
PRIMARY KEY(`UserId`)
|
||||
);
|
||||
"""
|
||||
""")
|
||||
|
||||
@property
|
||||
def insert_string(self) -> str:
|
||||
return f"""
|
||||
return str(f"""
|
||||
INSERT INTO `User` (
|
||||
`Name`
|
||||
) VALUES (
|
||||
'{self.Name}'
|
||||
);
|
||||
"""
|
||||
""")
|
||||
|
||||
@property
|
||||
def udpate_string(self) -> str:
|
||||
return f"""
|
||||
return str(f"""
|
||||
UPDATE `User`
|
||||
SET `Name` = '{self.Name}',
|
||||
`CityId` = {self.CityId},
|
||||
WHERE `UserId` = {self.UserId};
|
||||
"""
|
||||
""")
|
||||
|
||||
@property
|
||||
def delete_string(self) -> str:
|
||||
return f"""
|
||||
return str(f"""
|
||||
DELETE FROM `User`
|
||||
WHERE `UserId` = {self.UserId};
|
||||
"""
|
||||
""")
|
||||
|
@ -1,4 +1,6 @@
|
||||
from cpl_core.console import Console
|
||||
from cpl_core.database.context import DatabaseContextABC
|
||||
|
||||
from .city_model import CityModel
|
||||
from .user_model import UserModel
|
||||
from .user_repo_abc import UserRepoABC
|
||||
@ -9,21 +11,32 @@ class UserRepo(UserRepoABC):
|
||||
def __init__(self, db_context: DatabaseContextABC):
|
||||
UserRepoABC.__init__(self)
|
||||
|
||||
self._db: DatabaseContextABC = db_context
|
||||
|
||||
def create(self): pass
|
||||
self._db_context: DatabaseContextABC = db_context
|
||||
|
||||
def add_test_user(self):
|
||||
city = CityModel('Haren', '49733')
|
||||
city2 = CityModel('Meppen', '49716')
|
||||
self._db.cursor.execute(city2.insert_string)
|
||||
self._db_context.cursor.execute(city2.insert_string)
|
||||
user = UserModel('TestUser', city)
|
||||
self._db.cursor.execute(user.insert_string)
|
||||
self._db_context.cursor.execute(user.insert_string)
|
||||
self._db_context.save_changes()
|
||||
|
||||
def get_users(self) -> list[UserModel]:
|
||||
self._db.cursor.execute(f"""SELECT * FROM `User`""")
|
||||
return self._db.cursor.fetchall()
|
||||
users = []
|
||||
results = self._db_context.select('SELECT * FROM `User`')
|
||||
for result in results:
|
||||
users.append(UserModel(result[1], self.get_city_by_id(result[2]), id = result[0]))
|
||||
return users
|
||||
|
||||
def get_cities(self) -> list[CityModel]:
|
||||
self._db.cursor.execute(f"""SELECT * FROM `City`""")
|
||||
return self._db.cursor.fetchall()
|
||||
cities = []
|
||||
results = self._db_context.select('SELECT * FROM `City`')
|
||||
for result in results:
|
||||
cities.append(CityModel(result[1], result[2], id = result[0]))
|
||||
return cities
|
||||
|
||||
def get_city_by_id(self, id: int) -> CityModel:
|
||||
if id is None:
|
||||
return None
|
||||
result = self._db_context.select(f'SELECT * FROM `City` WHERE `Id` = {id}')
|
||||
return CityModel(result[1], result[2], id = result[0])
|
||||
|
@ -1,5 +1,6 @@
|
||||
from abc import ABC, abstractmethod
|
||||
|
||||
from .city_model import CityModel
|
||||
from .user_model import UserModel
|
||||
|
||||
|
||||
@ -10,3 +11,9 @@ class UserRepoABC(ABC):
|
||||
|
||||
@abstractmethod
|
||||
def get_users(self) -> list[UserModel]: pass
|
||||
|
||||
@abstractmethod
|
||||
def get_cities(self) -> list[CityModel]: pass
|
||||
|
||||
@abstractmethod
|
||||
def get_city_by_id(self, id: int) -> CityModel: pass
|
||||
|
Loading…
Reference in New Issue
Block a user