def __setup_columns(self):
'''
Find all the columns attached to this model and assign storage.
'''
column_id_util = ColumnIdentifierUtil(self)
for prop_name in dir(self):
try:
prop = getattr(self, prop_name)
except AttributeError:
# property has not been initialized yet, ignore and continue
continue
if Column.is_column(prop):
column = Column.get_column(prop)
col_name = prop_name
col_storage_id = column_id_util.get_column_identifier(column)
storage = self.service_locator.get_storage(col_storage_id)
self.columns[col_name] = BoundColumnCall(column, storage, self)
elif SubModel.is_submodel(prop):
submodel_name = prop_name
submodel = prop
self.submodels[submodel_name] = SubModelBinding(submodel, self)
def __setup_columns(self):
'''
Find all the columns attached to this model and assign storage.
'''
column_id_util = ColumnIdentifierUtil(self)
for prop_name in dir(self):
try:
prop = getattr(self, prop_name)
except AttributeError:
# property has not been initialized yet, ignore and continue
continue
if Column.is_column(prop):
column = Column.get_column(prop)
col_name = prop_name
col_storage_id = column_id_util.get_column_identifier(column)
storage = self.service_locator.get_storage(col_storage_id)
self.columns[col_name] = BoundColumnCall(column, storage, self)
elif SubModel.is_submodel(prop):
submodel_name = prop_name
submodel = prop
self.submodels[submodel_name] = SubModelBinding(submodel, self)
def __setup_data_context(self):
dc = self.data_context
dc_navigator = DataContextNavigator(dc)
for col_name, col in self.columns.iteritems():
metadata = Column.get_metadata(col)
if metadata.uses_data_context:
dc_prop = col_name if metadata.data_context == True else\
metadata.data_context
try: column_context = dc_navigator.navigate(dc_prop)
except (AttributeError, KeyError):
raise Exception(type(self).__name__ +
', missing data_context value for column '
'%(col_name)s: %(dc_prop)s'
'\n\t data_context = %(dc)s' % locals())
# allow binding primitives to single argument functions
if not isinstance(column_context, dict):
args = inspect.getargspec(metadata.inner_func).args
if args == ['self']:
column_context = {tuple():column_context}
else:
raise Exception(type(self).__name__ +
', data_context error for column '
'%s(col_name), unexpected data type. '
'Must be dictionary, since the function'
' takes multiple arguments '
'(not just "self"\ndata_context='
'%(column_context)' % column_context)
for args, val in column_context.iteritems():
col.set_value(args, val)
def do_timestep(self, t):
if self.__columns == None:
raise ModelException('You must call super.__init__')
for col in self.columns.values():
metadata = Column.get_metadata(col)
if metadata.is_automatically_called:
col(t)
for submodel in self.submodels.values():
submodel.do_timestep(t)
def do_timestep(self, t):
if self.__columns == None:
raise ModelException('You must call super.__init__')
for col in self.columns.values():
metadata = Column.get_metadata(col)
if metadata.is_automatically_called:
col(t)
for submodel in self.submodels.values():
submodel.do_timestep(t)
def testSingleArgBoundColumn(self):
storage = {}
model = object()
def get_col_fn(unit_test, expected_model):
get_col_fn.call_count = 0
def column_fn(self, t):
# check that argument passed in is the model
get_col_fn.call_count += 1
unit_test.assertEqual(expected_model, self)
return 100 * t
return column_fn
# Setup a function to memoize
column_fn = get_col_fn(self, model)
# Setup the Column
column = Column(column_fn, True)
# Setup the ColumnBinding, maps a column to it's storage
# and provides a callable interface
column_binding = BoundColumnCall(column, storage, model)
# Call the column
self.assertEqual(get_col_fn.call_count, 0)
column_binding(2)
self.assertEqual(get_col_fn.call_count, 1)
self.assertEqual({(2, ): 200}, storage)
# Call column again
column_binding(3)
self.assertEqual(get_col_fn.call_count, 2)
self.assertEqual({(2, ): 200, (3, ): 300}, storage)
# subsequent calls should have no effect
for i in xrange(1, 10):
column_binding(2)
column_binding(3)
self.assertEqual(get_col_fn.call_count, 2)
self.assertEqual({(2, ): 200, (3, ): 300}, storage)
# Call column again
column_binding(4)
self.assertEqual(get_col_fn.call_count, 3)
self.assertEqual({(2, ): 200, (3, ): 300, (4, ): 400}, storage)
def __setup_data_context(self):
dc = self.data_context
dc_navigator = DataContextNavigator(dc)
for col_name, col in self.columns.iteritems():
metadata = Column.get_metadata(col)
if metadata.uses_data_context:
dc_prop = col_name if metadata.data_context == True else\
metadata.data_context
try:
column_context = dc_navigator.navigate(dc_prop)
except (AttributeError, KeyError):
raise Exception(
type(self).__name__ +
', missing data_context value for column '
'%(col_name)s: %(dc_prop)s'
'\n\t data_context = %(dc)s' % locals())
# allow binding primitives to single argument functions
if not isinstance(column_context, dict):
args = inspect.getargspec(metadata.inner_func).args
if args == ['self']:
column_context = {tuple(): column_context}
else:
raise Exception(
type(self).__name__ +
', data_context error for column '
'%s(col_name), unexpected data type. '
'Must be dictionary, since the function'
' takes multiple arguments '
'(not just "self"\ndata_context='
'%(column_context)' % column_context)
for args, val in column_context.iteritems():
col.set_value(args, val)
def testGetMetadata(self):
col = Column(lambda x: x, True)
metadata = Column.get_metadata(col)
self.assertIsInstance(metadata, ColumnMetadata, \
'Expected column metadata')
def testIsAutoCallColumn(self):
col = Column(lambda x: x, True)
self.assertTrue(Column.is_column(col))
self.assertTrue(Column.is_auto_call(col))
def testIsColumn(self):
col = Column(lambda x: x, False)
self.assertTrue(Column.is_column(col))
self.assertFalse(Column.is_auto_call(col))
def get_column_identifier(self, column):
col_id = self.__model_identifier + Column.get_column_name(column)
metadata = {'args': getargspec(Column.get_metadata(column).inner_func)}
return ColumnIdentifier(col_id, column, metadata)
def get_column_identifier(self, column):
col_id = self.__model_identifier + Column.get_column_name(column)
metadata = {'args': getargspec(Column.get_metadata(column).inner_func)}
return ColumnIdentifier(col_id, column, metadata)
def testGetMetadata(self):
col = Column(lambda x: x, True)
metadata = Column.get_metadata(col)
self.assertIsInstance(metadata, ColumnMetadata, \
'Expected column metadata')
def testIsAutoCallColumn(self):
col = Column(lambda x: x, True)
self.assertTrue(Column.is_column(col))
self.assertTrue(Column.is_auto_call(col))
def testIsColumn(self):
col = Column(lambda x: x, False)
self.assertTrue(Column.is_column(col))
self.assertFalse(Column.is_auto_call(col))
