steev
df1795c0bd
Some checks failed
Build and Push Docker Image / build-and-push (push) Failing after 47s
80 lines
2.9 KiB
Python
80 lines
2.9 KiB
Python
from sqlalchemy import create_engine, Column, ForeignKey, Integer, String, Date, Float, DateTime
|
|
from sqlalchemy.orm import relationship, sessionmaker
|
|
from sqlalchemy.ext.declarative import declarative_base
|
|
from sqlalchemy.pool import NullPool
|
|
from sqlalchemy.exc import OperationalError
|
|
|
|
Base = declarative_base()
|
|
|
|
# Funktion zur Herstellung einer Verbindung zur Datenbank
|
|
def db_connect():
|
|
try:
|
|
engine = create_engine("postgresql://example:example@localhost/geotrack", poolclass=NullPool)
|
|
# Überprüfe die Verbindung
|
|
with engine.connect() as connection:
|
|
print("Verbindung zur Datenbank erfolgreich!")
|
|
return engine
|
|
except OperationalError as e:
|
|
print(f"Fehler bei der Verbindung zur Datenbank: {e}")
|
|
return None
|
|
|
|
# Funktion zur Erstellung der Tabellen
|
|
def create_table(engine):
|
|
try:
|
|
if engine is not None:
|
|
Base.metadata.create_all(engine)
|
|
print("Tabellen wurden erfolgreich erstellt!")
|
|
else:
|
|
print("Keine Verbindung zur Datenbank verfügbar.")
|
|
except Exception as e:
|
|
print(f"Fehler bei der Tabellenerstellung: {e}")
|
|
|
|
# Track-Tabelle
|
|
class Track(Base):
|
|
__tablename__ = 'track'
|
|
id = Column(Integer, primary_key=True, autoincrement=True)
|
|
trackName = Column(String(200), nullable=True)
|
|
vehicle_id = Column(Integer, ForeignKey('vehicle.id'), nullable=False)
|
|
driver_id = Column(Integer, ForeignKey('driver.id'), nullable=False)
|
|
date = Column(Date, nullable=True)
|
|
distance = Column(Float, nullable=False, default=0.0)
|
|
speed = Column(Float, nullable=False, default=0.0)
|
|
|
|
# Beziehungen
|
|
driver = relationship("Driver", back_populates="tracks", foreign_keys=[driver_id])
|
|
vehicle = relationship("Vehicle", back_populates="tracks", foreign_keys=[vehicle_id])
|
|
waypoints = relationship('Waypoint', back_populates='track', lazy=True)
|
|
|
|
# Waypoint-Tabelle
|
|
class Waypoint(Base):
|
|
__tablename__ = 'waypoint'
|
|
id = Column(Integer, primary_key=True, autoincrement=True)
|
|
lat = Column(Float, nullable=False)
|
|
lon = Column(Float, nullable=False)
|
|
ele = Column(Float, nullable=False)
|
|
speed = Column(Float, nullable=True)
|
|
time = Column(DateTime, nullable=True)
|
|
track_id = Column(Integer, ForeignKey('track.id'), nullable=False)
|
|
|
|
# Beziehung zu Track
|
|
track = relationship("Track", back_populates="waypoints")
|
|
|
|
# Driver-Tabelle
|
|
class Driver(Base):
|
|
__tablename__ = 'driver'
|
|
id = Column(Integer, primary_key=True)
|
|
name = Column(String, nullable=False)
|
|
|
|
# Beziehung zu Tracks
|
|
tracks = relationship("Track", back_populates="driver", overlaps="vehicle_tracks")
|
|
|
|
# Vehicle-Tabelle
|
|
class Vehicle(Base):
|
|
__tablename__ = 'vehicle'
|
|
id = Column(Integer, primary_key=True)
|
|
name = Column(String, nullable=False)
|
|
licenseplate = Column(String, nullable=True)
|
|
|
|
# Beziehung zu Tracks
|
|
tracks = relationship("Track", back_populates="vehicle", overlaps="driver_tracks")
|