def __init__(self, field):
"""Constructor.
:param field: dot separated path to the EDTF field to process.
"""
super(EDTFDumperExt, self).__init__()
self.keys = parse_lookup_key(field)
self.key = self.keys[-1]
def __init__(self, target_field):
"""Constructor.
:param target_field: dot separated path where to dump the tokens.
"""
super().__init__()
self.keys = parse_lookup_key(target_field)
self.key = self.keys[-1]
def __init__(self, list_field, key):
"""Constructor.
:param list_field: dot-separated path to the array to process.
:param key: name of the (scalar) EDTF field. This field has to be
present in each array item. In contrast to `list_field`,
this should be a simple field name (and not a
dot-separated path).
"""
super(EDTFListDumperExt, self).__init__()
self.keys = parse_lookup_key(list_field)
self.key = key
self.range_key = "{}_range".format(self.key)
def pre_load(self, data, **kwargs):
"""Called before a record is dumped in a secondary storage system."""
if self._dump:
keys = parse_lookup_key(self.attr_name)
parent = dict_lookup(data, keys, parent=True)
parent.pop(keys[-1], None)