def name(self):
# Cache this
if hasattr(self, '_name'):
nm = self._name
else:
nm = subset_ops.subset_unique_name(self)
return nm
def __new__(cls, cfg, column_set, name=None, description=None):
"""Returns the identical subset if the columns are identical.
This is basically a pythonized factory. See here:
http://codesnipers.com/?q=python-flyweights
"""
columns = list(column_set)
columns.sort()
subset_id = subset_ops.subset_unique_name(columns)
obj = Subset._cache.get(subset_id, None)
if not obj:
obj = object.__new__(cls)
Subset._cache[subset_id] = obj
obj.init(subset_id, cfg, column_set, columns)
return obj
def __new__(cls, cfg, column_set, name=None, description=None):
"""Returns the identical subset if the columns are identical.
This is basically a pythonized factory. See here:
http://codesnipers.com/?q=python-flyweights
"""
columns = list(column_set)
columns.sort()
subset_id = subset_ops.subset_unique_name(columns)
obj = Subset._cache.get(subset_id, None)
if not obj:
obj = object.__new__(cls)
Subset._cache[subset_id] = obj
obj.init(subset_id, cfg, column_set, columns)
return obj
