140 lines
4.6 KiB
Python
140 lines
4.6 KiB
Python
from trackdirect.common.Model import Model
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class StationTelemetryParam(Model):
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"""StationTelemetryParam represents the telemetry parameters sent by the related station
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"""
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def __init__(self, db):
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"""The __init__ method.
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Args:
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db (psycopg2.Connection): Database connection
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"""
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Model.__init__(self, db)
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self.id = None
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self.stationId = None
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self.createdTs = None
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self.latestTs = None
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self.validToTs = None
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self.p1 = None
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self.p2 = None
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self.p3 = None
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self.p4 = None
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self.p5 = None
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self.b1 = None
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self.b2 = None
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self.b3 = None
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self.b4 = None
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self.b5 = None
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self.b6 = None
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self.b7 = None
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self.b8 = None
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def validate(self):
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"""Returns true on success (when object content is valid), otherwise false
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Returns:
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True on success otherwise False
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"""
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if (type(self.stationId) != int or self.stationId <= 0):
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return False
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return True
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def save(self):
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"""Save object data to database if attribute data is valid
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Returns:
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Returns true on success otherwise false
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"""
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if (self.validate()):
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if (self.isExistingObject()):
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return self.update()
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else:
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cursor = self.db.cursor()
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cursor.execute("""update station_telemetry_param
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set latest_ts = %s
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where station_id = %s
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and valid_to_ts is null
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and p1 = %s
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and p2 = %s
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and p3 = %s
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and p4 = %s
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and p5 = %s
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and b1 = %s
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and b2 = %s
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and b3 = %s
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and b4 = %s
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and b5 = %s
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and b6 = %s
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and b7 = %s
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and b8 = %s""",
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(self.createdTs,
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self.stationId,
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self.p1,
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self.p2,
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self.p3,
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self.p4,
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self.p5,
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self.b1,
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self.b2,
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self.b3,
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self.b4,
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self.b5,
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self.b6,
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self.b7,
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self.b8))
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if (cursor.rowcount == 0):
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return self.insert()
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else:
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# We do not insert it since it was equal to the existsing row
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return True
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return False
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def insert(self):
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"""Method to call when we want to save a new object to database
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Returns:
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True on success otherwise False
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"""
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if (not self.isExistingObject()):
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insertCursor = self.db.cursor()
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insertCursor.execute("""update station_telemetry_param
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set valid_to_ts = %s
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where station_id = %s
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and valid_to_ts is null""",
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(self.createdTs,
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self.stationId))
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insertCursor.execute("""insert into station_telemetry_param(station_id, created_ts, latest_ts, p1, p2, p3, p4, p5, b1, b2, b3, b4, b5, b6, b7, b8)
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values (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)""",
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(self.stationId,
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self.createdTs,
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self.createdTs,
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self.p1,
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self.p2,
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self.p3,
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self.p4,
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self.p5,
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self.b1,
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self.b2,
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self.b3,
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self.b4,
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self.b5,
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self.b6,
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self.b7,
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self.b8))
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return True
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else:
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return False
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def update(self):
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"""Method to call when we want to save changes to database
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Returns:
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True on success otherwise False
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"""
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return False
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