Class for connecting with the database. More...

Inheritance diagram for Lib.rave_dom_db.rave_db:

Public Member Functions
	__init__ (self, engine_or_url)

	get_connection (self)

	psql_invalidate (self, dbapi_conn, connection_rec, exception)

	create (self)
	Creates the tables if they don't exist.

	drop (self)
	Drops the database tables if they exist.

	add (self, obj)
	Adds an object to the associated table.

	merge (self, obj)

	get_session (self)

	get_observations_in_bbox (self, ullon, ullat, lrlon, lrlat, startdt=None, enddt=None)

	get_observations_in_interval (self, startdt, enddt, stations=[])

	delete_observations_in_interval (self, startdt, enddt)

	get_station (self, stationid)

	get_stations_in_bbox (self, ullon, ullat, lrlon, lrlat)

	delete_all_stations (self)

	get_gra_coefficient (self, dt)

	get_newest_gra_coefficient (self, dt, dtmax=None)
	Return the most recent gra coefficient since dt.

	get_grapoints (self, dt, edt=None)

	delete_grapoints (self, dt, edt=None)

	purge_grapoints (self)

	get_latest_melting_layer (self, nod, hours=None, ct=datetime.datetime.utcnow())

	remove_old_melting_layers (self, ct=None)

Public Attributes
str	_engine = "postgresql":

	psql_invalidate

	Session = sessionmaker(bind=self._engine)

Protected Attributes
	_engine = engine.create_engine(engine_or_url, echo=False)

Detailed Description

Class for connecting with the database.

Member Function Documentation

Lib.rave_dom_db.rave_db.add	(		self,
			obj )

Adds an object to the associated table.

Lib.rave_dom_db.rave_db.create ( self )

Creates the tables if they don't exist.

Lib.rave_dom_db.rave_db.drop ( self )

Drops the database tables if they exist.

Lib.rave_dom_db.rave_db.get_connection ( self )

get a context managed connection to the database

Lib.rave_dom_db.rave_db.get_newest_gra_coefficient	(	self,
		dt,
		dtmax = None )

Return the most recent gra coefficient since dt.

Parameters

dt	From time when to search for coefficients

The documentation for this class was generated from the following file: