import enum
import math
from struct import unpack
-
-import sqlalchemy as sa
+from binascii import unhexlify
from nominatim.errors import UsageError
+from nominatim.api.localization import Locales
# pylint: disable=no-member,too-many-boolean-expressions,too-many-instance-attributes
@dataclasses.dataclass
class PlaceID:
- """ Reference an object by Nominatim's internal ID.
+ """ Reference a place by Nominatim's internal ID.
+
+ A PlaceID may reference place from the main table placex, from
+ the interpolation tables or the postcode tables. Place IDs are not
+ stable between installations. You may use this type theefore only
+ with place IDs obtained from the same database.
"""
place_id: int
+ """
+ The internal ID of the place to reference.
+ """
@dataclasses.dataclass
class OsmID:
- """ Reference by the OSM ID and potentially the basic category.
+ """ Reference a place by its OSM ID and potentially the basic category.
+
+ The OSM ID may refer to places in the main table placex and OSM
+ interpolation lines.
"""
osm_type: str
+ """ OSM type of the object. Must be one of `N`(node), `W`(way) or
+ `R`(relation).
+ """
osm_id: int
+ """ The OSM ID of the object.
+ """
osm_class: Optional[str] = None
+ """ The same OSM object may appear multiple times in the database under
+ different categories. The optional class parameter allows to distinguish
+ the different categories and corresponds to the key part of the category.
+ If there are multiple objects in the database and `osm_class` is
+ left out, then one of the objects is returned at random.
+ """
def __post_init__(self) -> None:
if self.osm_type not in ('N', 'W', 'R'):
@staticmethod
- def from_wkb(wkb: bytes) -> 'Point':
+ def from_wkb(wkb: Union[str, bytes]) -> 'Point':
""" Create a point from EWKB as returned from the database.
"""
+ if isinstance(wkb, str):
+ wkb = unhexlify(wkb)
if len(wkb) != 25:
- raise ValueError("Point wkb has unexpected length")
+ raise ValueError(f"Point wkb has unexpected length {len(wkb)}")
if wkb[0] == 0:
gtype, srid, x, y = unpack('>iidd', wkb[1:])
elif wkb[0] == 1:
return Point(x, y)
- def sql_value(self) -> str:
- """ Create an SQL expression for the point.
+ def to_wkt(self) -> str:
+ """ Return the WKT representation of the point.
"""
return f'POINT({self.x} {self.y})'
WKB_BBOX_HEADER_BE = b'\x00\x20\x00\x00\x03\x00\x00\x10\xe6\x00\x00\x00\x01\x00\x00\x00\x05'
class Bbox:
- """ A bounding box in WSG84 projection.
+ """ A bounding box in WGS84 projection.
The coordinates are available as an array in the 'coord'
property in the order (minx, miny, maxx, maxy).
"""
def __init__(self, minx: float, miny: float, maxx: float, maxy: float) -> None:
+ """ Create a new bounding box with the given coordinates in WGS84
+ projection.
+ """
self.coords = (minx, miny, maxx, maxy)
return (self.coords[2] - self.coords[0]) * (self.coords[3] - self.coords[1])
- def sql_value(self) -> Any:
- """ Create an SQL expression for the box.
- """
- return sa.func.ST_MakeEnvelope(*self.coords, 4326)
-
-
def contains(self, pt: Point) -> bool:
""" Check if the point is inside or on the boundary of the box.
"""
and self.coords[2] >= pt[0] and self.coords[3] >= pt[1]
+ def to_wkt(self) -> str:
+ """ Return the WKT representation of the Bbox. This
+ is a simple polygon with four points.
+ """
+ return 'POLYGON(({0} {1},{0} {3},{2} {3},{2} {1},{0} {1}))'\
+ .format(*self.coords) # pylint: disable=consider-using-f-string
+
+
@staticmethod
- def from_wkb(wkb: Optional[bytes]) -> 'Optional[Bbox]':
+ def from_wkb(wkb: Union[None, str, bytes]) -> 'Optional[Bbox]':
""" Create a Bbox from a bounding box polygon as returned by
- the database. Return s None if the input value is None.
+ the database. Returns `None` if the input value is None.
"""
if wkb is None:
return None
+ if isinstance(wkb, str):
+ wkb = unhexlify(wkb)
+
if len(wkb) != 97:
raise ValueError("WKB must be a bounding box polygon")
if wkb.startswith(WKB_BBOX_HEADER_LE):
except ValueError as exc:
raise UsageError('Bounding box parameter needs to be numbers.') from exc
- if x1 < -180.0 or x1 > 180.0 or y1 < -90.0 or y1 > 90.0 \
- or x2 < -180.0 or x2 > 180.0 or y2 < -90.0 or y2 > 90.0:
- raise UsageError('Bounding box coordinates invalid.')
+ x1 = min(180, max(-180, x1))
+ x2 = min(180, max(-180, x2))
+ y1 = min(90, max(-90, y1))
+ y2 = min(90, max(-90, y2))
if x1 == x2 or y1 == y2:
raise UsageError('Bounding box with invalid parameters.')
class GeometryFormat(enum.Flag):
- """ Geometry output formats supported by Nominatim.
+ """ All search functions support returning the full geometry of a place in
+ various formats. The internal geometry is converted by PostGIS to
+ the desired format and then returned as a string. It is possible to
+ request multiple formats at the same time.
"""
NONE = 0
+ """ No geometry requested. Alias for a empty flag.
+ """
GEOJSON = enum.auto()
+ """
+ [GeoJSON](https://geojson.org/) format
+ """
KML = enum.auto()
+ """
+ [KML](https://en.wikipedia.org/wiki/Keyhole_Markup_Language) format
+ """
SVG = enum.auto()
+ """
+ [SVG](http://www.w3.org/TR/SVG/paths.html) format
+ """
TEXT = enum.auto()
+ """
+ [WKT](https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry) format
+ """
class DataLayer(enum.Flag):
- """ Layer types that can be selected for reverse and forward search.
+ """ The `DataLayer` flag type defines the layers that can be selected
+ for reverse and forward search.
"""
- POI = enum.auto()
ADDRESS = enum.auto()
+ """ The address layer contains all places relevant for addresses:
+ fully qualified addresses with a house number (or a house name equivalent,
+ for some addresses) and places that can be part of an address like
+ roads, cities, states.
+ """
+ POI = enum.auto()
+ """ Layer for points of interest like shops, restaurants but also
+ recycling bins or postboxes.
+ """
RAILWAY = enum.auto()
- MANMADE = enum.auto()
+ """ Layer with railway features including tracks and other infrastructure.
+ Note that in Nominatim's standard configuration, only very few railway
+ features are imported into the database. Thus a custom configuration
+ is required to make full use of this layer.
+ """
NATURAL = enum.auto()
+ """ Layer with natural features like rivers, lakes and mountains.
+ """
+ MANMADE = enum.auto()
+ """ Layer with other human-made features and boundaries. This layer is
+ the catch-all and includes all features not covered by the other
+ layers. A typical example for this layer are national park boundaries.
+ """
def format_country(cc: Any) -> List[str]:
@dataclasses.dataclass
class LookupDetails:
- """ Collection of parameters that define the amount of details
+ """ Collection of parameters that define which kind of details are
returned with a lookup or details result.
"""
geometry_output: GeometryFormat = GeometryFormat.NONE
0.0 means the original geometry is kept. The higher the value, the
more the geometry gets simplified.
"""
+ locales: Locales = Locales()
+ """ Preferred languages for localization of results.
+ """
@classmethod
def from_kwargs(cls: Type[TParam], kwargs: Dict[str, Any]) -> TParam:
"""
excluded: List[int] = dataclasses.field(default_factory=list,
metadata={'transform': format_excluded})
- """ List of OSM objects to exclude from the results. Currenlty only
+ """ List of OSM objects to exclude from the results. Currently only
works when the internal place ID is given.
An empty list (the default) will disable this filter.
"""
""" Restrict search to places with one of the given class/type categories.
An empty list (the default) will disable this filter.
"""
+ viewbox_x2: Optional[Bbox] = None
def __post_init__(self) -> None:
if self.viewbox is not None:
or (self.bounded_viewbox
and self.viewbox is not None and self.near is not None
and self.viewbox.contains(self.near))
- or self.layers is not None and not self.layers)
+ or (self.layers is not None and not self.layers)
+ or (self.max_rank <= 4 and
+ self.layers is not None and not self.layers & DataLayer.ADDRESS))
def layer_enabled(self, layer: DataLayer) -> bool:
- """ Check if the given layer has been choosen. Also returns
+ """ Check if the given layer has been chosen. Also returns
true when layer restriction has been disabled completely.
"""
return self.layers is None or bool(self.layers & layer)
projects / nominatim.git / blobdiff