1 # SPDX-License-Identifier: GPL-3.0-or-later
3 # This file is part of Nominatim. (https://nominatim.org)
5 # Copyright (C) 2024 by the Nominatim developer community.
6 # For a full list of authors see the git log.
8 Data class for a single name of a place.
10 from typing import Optional, Dict, Mapping
14 """ Each name and address part of a place is encapsulated in an object of
15 this class. It saves not only the name proper but also describes the
16 kind of name with two properties:
18 * `kind` describes the name of the OSM key used without any suffixes
19 (i.e. the part after the colon removed)
20 * `suffix` contains the suffix of the OSM tag, if any. The suffix
21 is the part of the key after the first colon.
23 In addition to that, a name may have arbitrary additional attributes.
24 How attributes are used, depends on the sanitizers and token analysers.
25 The exception is the 'analyzer' attribute. This attribute determines
26 which token analysis module will be used to finalize the treatment of
30 def __init__(self, name: str, kind: str, suffix: Optional[str]):
34 self.attr: Dict[str, str] = {}
36 def __repr__(self) -> str:
37 return f"PlaceName(name={self.name!r},kind={self.kind!r},suffix={self.suffix!r})"
39 def clone(self, name: Optional[str] = None,
40 kind: Optional[str] = None,
41 suffix: Optional[str] = None,
42 attr: Optional[Mapping[str, str]] = None) -> 'PlaceName':
43 """ Create a deep copy of the place name, optionally with the
44 given parameters replaced. In the attribute list only the given
45 keys are updated. The list is not replaced completely.
46 In particular, the function cannot to be used to remove an
47 attribute from a place name.
49 newobj = PlaceName(name or self.name,
51 suffix or self.suffix)
53 newobj.attr.update(self.attr)
55 newobj.attr.update(attr)
59 def set_attr(self, key: str, value: str) -> None:
60 """ Add the given property to the name. If the property was already
61 set, then the value is overwritten.
63 self.attr[key] = value
65 def get_attr(self, key: str, default: Optional[str] = None) -> Optional[str]:
66 """ Return the given property or the value of 'default' if it
69 return self.attr.get(key, default)
71 def has_attr(self, key: str) -> bool:
72 """ Check if the given attribute is set.
74 return key in self.attr