ogn-python/ogn_python/model/receiver_coverage.py

24 wiersze
957 B
Python

from ogn_python import db
class ReceiverCoverage(db.Model):
__tablename__ = "receiver_coverages"
location_mgrs_short = db.Column(db.String(9), primary_key=True)
date = db.Column(db.Date, primary_key=True)
max_signal_quality = db.Column(db.Float)
max_altitude = db.Column(db.Float(precision=2))
min_altitude = db.Column(db.Float(precision=2))
aircraft_beacon_count = db.Column(db.Integer)
device_count = db.Column(db.SmallInteger)
# Relations
receiver_id = db.Column(db.Integer, db.ForeignKey('receivers.id', ondelete='SET NULL'), primary_key=True)
receiver = db.relationship('Receiver', foreign_keys=[receiver_id], backref=db.backref('receiver_coverages', order_by='ReceiverCoverage.date.asc()'))
db.Index('ix_receiver_coverages_date_receiver_id', ReceiverCoverage.date, ReceiverCoverage.receiver_id)
db.Index('ix_receiver_coverages_receiver_id_date', ReceiverCoverage.receiver_id, ReceiverCoverage.date)