def __init__(self, db, db_hierarchy, on, across, by, regressors):
side_operations_manager.SideOperationsManager.__init__(
self, db_hierarchy, on, across, by)
# add column functions for the default regressors: on_AB, on_X,
# across_AX(s), across_B(s) (but not the by(s))
default_regressors = [on[0] + '_1', on[0] + '_2']
# check if no across were specified
if not (self.across_cols == set(["#across"])):
for col in self.across_cols:
default_regressors.append(col + '_1')
default_regressors.append(col + '_2')
# FIXME add default regressors only if they are not already specified ?
# FIXME do we really need to add the columns deriving from the original
# on and across?
regressors = regressors + default_regressors
# reg can be: the name of a column of the database (possibly extended),
# the name of lookup file, the name of a script, a script under the
# form of a string (that doesnt end by .dbfun...)
for reg in regressors:
# instantiate appropriate dbfun
if reg in self.extended_cols: # column already in db
col, _ = self.parse_extended_column(reg)
db_fun = dbfun_column.DBfun_Column(reg, db, col, indexed=True)
elif len(reg) >= 6 and reg[-6:] == '.dbfun': # lookup table
# ask for re-interpreted indexed outputs
db_fun = dbfun_lookuptable.DBfun_LookupTable(reg, indexed=True)
else: # on the fly computation
db_fun = dbfun_compute.DBfun_Compute(reg, self.extended_cols)
self.add(db_fun)
def __init__(self, db_hierarchy, on, across, by, filters):
side_operations_manager.SideOperationsManager.__init__(
self, db_hierarchy, on, across, by)
# this case is specific to filters, it applies a generic filter to the
# database before considering A, B and X stuff.
self.generic = []
# associate each of the provided filters to the appropriate point in
# the computation flow
# filt can be: the name of a column of the database (possibly
# extended), the name of lookup file, the name of a script, a script
# under the form of a string (that doesnt end by .dbfun...)
for filt in filters:
# instantiate appropriate dbfun
if filt in self.extended_cols: # column already in db
db_fun = dbfun_column.DBfun_Column(filt, indexed=False)
# evaluate context is wasteful in this case... not even
# necessary to have a dbfun at all
elif len(filt) >= 6 and filt[-6:] == '.dbfun': # lookup table
# ask for re-interpreted indexed outputs
db_fun = dbfun_lookuptable.DBfun_LookupTable(
filt, indexed=False)
else: # on the fly computation
db_fun = dbfun_compute.DBfun_Compute(filt, self.extended_cols)
self.add(db_fun)