sh_cpl/src_old/sh_edraft/database/context/database_context.py
2021-03-03 10:47:52 +01:00

51 lines
1.9 KiB
Python

from sqlalchemy import engine, Table
from sqlalchemy.orm import Session
from sh_edraft.database.connection.database_connection import DatabaseConnection
from sh_edraft.database.connection.base.database_connection_base import DatabaseConnectionBase
from sh_edraft.database.context.base.database_context_base import DatabaseContextBase
from sh_edraft.database.model.dbmodel import DBModel
from sh_edraft.database.model.database_settings import DatabaseSettings
from sh_edraft.console.console import Console
from sh_edraft.console.model.foreground_color import ForegroundColor
class DatabaseContext(DatabaseContextBase):
def __init__(self, database_settings: DatabaseSettings):
DatabaseContextBase.__init__(self)
self._db: DatabaseConnectionBase = DatabaseConnection(database_settings)
self._tables: list[Table] = []
@property
def engine(self) -> engine:
return self._db.engine
@property
def session(self) -> Session:
return self._db.session
def create(self):
pass
def connect(self, connection_string: str):
self._db.connect(connection_string)
self._create_tables()
def _create_tables(self):
try:
for subclass in DBModel.__subclasses__():
self._tables.append(subclass.__table__)
DBModel.metadata.drop_all(self._db.engine, self._tables)
DBModel.metadata.create_all(self._db.engine, self._tables, checkfirst=True)
Console.set_foreground_color(ForegroundColor.green)
Console.write_line(f'[{__name__}] Created tables')
Console.set_foreground_color(ForegroundColor.default)
except Exception as e:
Console.set_foreground_color(ForegroundColor.red)
Console.write_line(f'[{__name__}] Creating tables failed -> {e}')
Console.set_foreground_color(ForegroundColor.default)
exit()