def __init__(self, datatypes_registry=None, ext='data', dbkey='?'):
self.ext = self.extension = ext
self.dbkey = dbkey
assert datatypes_registry is not None
self.datatype = datatypes_registry.get_datatype_by_extension(ext)
self._metadata = None
self.metadata = MetadataCollection(self)
def __init__(self, datatypes_registry=None, ext='data', dbkey='?'):
self.ext = self.extension = ext
self.dbkey = dbkey
if datatypes_registry is None:
# Default Value Required for unit tests
datatypes_registry = Registry()
datatypes_registry.load_datatypes()
self.datatype = datatypes_registry.get_datatype_by_extension(ext)
self._metadata = None
self.metadata = MetadataCollection(self)
def get_metadata(self):
if not hasattr(
self, '_metadata_collection'
) or self._metadata_collection.parent != self: # using weakref to store parent (to prevent circ ref), does a context.clear() cause parent to be invalidated, while still copying over this non-database attribute?
self._metadata_collection = MetadataCollection(self)
return self._metadata_collection