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Nominatim/nominatim/api/core.py
Sarah Hoffmann 114cdafe7e add exporting of SQLite table
2023-10-23 17:19:12 +02:00

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# SPDX-License-Identifier: GPL-2.0-only
#
# This file is part of Nominatim. (https://nominatim.org)
#
# Copyright (C) 2023 by the Nominatim developer community.
# For a full list of authors see the git log.
"""
Implementation of classes for API access via libraries.
"""
from typing import Mapping, Optional, Any, AsyncIterator, Dict, Sequence, List, Tuple
import asyncio
import sys
import contextlib
from pathlib import Path
import sqlalchemy as sa
import sqlalchemy.ext.asyncio as sa_asyncio
from nominatim.errors import UsageError
from nominatim.db.sqlalchemy_schema import SearchTables
from nominatim.db.async_core_library import PGCORE_LIB, PGCORE_ERROR
from nominatim.config import Configuration
from nominatim.api.connection import SearchConnection
from nominatim.api.status import get_status, StatusResult
from nominatim.api.lookup import get_detailed_place, get_simple_place
from nominatim.api.reverse import ReverseGeocoder
from nominatim.api.search import ForwardGeocoder, Phrase, PhraseType, make_query_analyzer
import nominatim.api.types as ntyp
from nominatim.api.results import DetailedResult, ReverseResult, SearchResults
class NominatimAPIAsync: #pylint: disable=too-many-instance-attributes
""" The main frontend to the Nominatim database implements the
functions for lookup, forward and reverse geocoding using
asynchronous functions.
This class shares most of the functions with its synchronous
version. There are some additional functions or parameters,
which are documented below.
"""
def __init__(self, project_dir: Path,
environ: Optional[Mapping[str, str]] = None,
loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
""" Initiate a new frontend object with synchronous API functions.
Parameters:
project_dir: Path to the
[project directory](../admin/Import.md#creating-the-project-directory)
of the local Nominatim installation.
environ: Mapping of [configuration parameters](../customize/Settings.md).
When set, replaces any configuration via environment variables.
Settings in this mapping also have precedence over any
parameters found in the `.env` file of the project directory.
loop: The asyncio event loop that will be used when calling
functions. Only needed, when a custom event loop is used
and the Python version is 3.9 or earlier.
"""
self.config = Configuration(project_dir, environ)
self.query_timeout = self.config.get_int('QUERY_TIMEOUT') \
if self.config.QUERY_TIMEOUT else None
self.reverse_restrict_to_country_area = self.config.get_bool('SEARCH_WITHIN_COUNTRIES')
self.server_version = 0
if sys.version_info >= (3, 10):
self._engine_lock = asyncio.Lock()
else:
self._engine_lock = asyncio.Lock(loop=loop) # pylint: disable=unexpected-keyword-arg
self._engine: Optional[sa_asyncio.AsyncEngine] = None
self._tables: Optional[SearchTables] = None
self._property_cache: Dict[str, Any] = {'DB:server_version': 0}
async def setup_database(self) -> None:
""" Set up the SQL engine and connections.
This function will be implicitly called when the database is
accessed for the first time. You may also call it explicitly to
avoid that the first call is delayed by the setup.
"""
async with self._engine_lock:
if self._engine:
return
extra_args: Dict[str, Any] = {'future': True,
'echo': self.config.get_bool('DEBUG_SQL')}
is_sqlite = self.config.DATABASE_DSN.startswith('sqlite:')
if is_sqlite:
params = dict((p.split('=', 1)
for p in self.config.DATABASE_DSN[7:].split(';')))
dburl = sa.engine.URL.create('sqlite+aiosqlite',
database=params.get('dbname'))
else:
dsn = self.config.get_database_params()
query = {k: v for k, v in dsn.items()
if k not in ('user', 'password', 'dbname', 'host', 'port')}
dburl = sa.engine.URL.create(
f'postgresql+{PGCORE_LIB}',
database=dsn.get('dbname'),
username=dsn.get('user'),
password=dsn.get('password'),
host=dsn.get('host'),
port=int(dsn['port']) if 'port' in dsn else None,
query=query)
extra_args['max_overflow'] = 0
extra_args['pool_size'] = self.config.get_int('API_POOL_SIZE')
engine = sa_asyncio.create_async_engine(dburl, **extra_args)
try:
async with engine.begin() as conn:
result = await conn.scalar(sa.text('SHOW server_version_num'))
server_version = int(result)
except (PGCORE_ERROR, sa.exc.OperationalError):
server_version = 0
if server_version >= 110000 and not is_sqlite:
@sa.event.listens_for(engine.sync_engine, "connect")
def _on_connect(dbapi_con: Any, _: Any) -> None:
cursor = dbapi_con.cursor()
cursor.execute("SET jit_above_cost TO '-1'")
cursor.execute("SET max_parallel_workers_per_gather TO '0'")
# Make sure that all connections get the new settings
await self.close()
if is_sqlite:
@sa.event.listens_for(engine.sync_engine, "connect")
def _on_sqlite_connect(dbapi_con: Any, _: Any) -> None:
dbapi_con.run_async(lambda conn: conn.enable_load_extension(True))
cursor = dbapi_con.cursor()
cursor.execute("SELECT load_extension('mod_spatialite')")
cursor.execute('SELECT SetDecimalPrecision(7)')
dbapi_con.run_async(lambda conn: conn.enable_load_extension(False))
self._property_cache['DB:server_version'] = server_version
self._tables = SearchTables(sa.MetaData(), engine.name) # pylint: disable=no-member
self._engine = engine
async def close(self) -> None:
""" Close all active connections to the database. The NominatimAPIAsync
object remains usable after closing. If a new API functions is
called, new connections are created.
"""
if self._engine is not None:
await self._engine.dispose()
@contextlib.asynccontextmanager
async def begin(self) -> AsyncIterator[SearchConnection]:
""" Create a new connection with automatic transaction handling.
This function may be used to get low-level access to the database.
Refer to the documentation of SQLAlchemy for details how to use
the connection object.
"""
if self._engine is None:
await self.setup_database()
assert self._engine is not None
assert self._tables is not None
async with self._engine.begin() as conn:
yield SearchConnection(conn, self._tables, self._property_cache)
async def status(self) -> StatusResult:
""" Return the status of the database.
"""
try:
async with self.begin() as conn:
conn.set_query_timeout(self.query_timeout)
status = await get_status(conn)
except (PGCORE_ERROR, sa.exc.OperationalError):
return StatusResult(700, 'Database connection failed')
return status
async def details(self, place: ntyp.PlaceRef, **params: Any) -> Optional[DetailedResult]:
""" Get detailed information about a place in the database.
Returns None if there is no entry under the given ID.
"""
details = ntyp.LookupDetails.from_kwargs(params)
async with self.begin() as conn:
conn.set_query_timeout(self.query_timeout)
if details.keywords:
await make_query_analyzer(conn)
return await get_detailed_place(conn, place, details)
async def lookup(self, places: Sequence[ntyp.PlaceRef], **params: Any) -> SearchResults:
""" Get simple information about a list of places.
Returns a list of place information for all IDs that were found.
"""
details = ntyp.LookupDetails.from_kwargs(params)
async with self.begin() as conn:
conn.set_query_timeout(self.query_timeout)
if details.keywords:
await make_query_analyzer(conn)
return SearchResults(filter(None,
[await get_simple_place(conn, p, details) for p in places]))
async def reverse(self, coord: ntyp.AnyPoint, **params: Any) -> Optional[ReverseResult]:
""" Find a place by its coordinates. Also known as reverse geocoding.
Returns the closest result that can be found or None if
no place matches the given criteria.
"""
# The following negation handles NaN correctly. Don't change.
if not abs(coord[0]) <= 180 or not abs(coord[1]) <= 90:
# There are no results to be expected outside valid coordinates.
return None
details = ntyp.ReverseDetails.from_kwargs(params)
async with self.begin() as conn:
conn.set_query_timeout(self.query_timeout)
if details.keywords:
await make_query_analyzer(conn)
geocoder = ReverseGeocoder(conn, details,
self.reverse_restrict_to_country_area)
return await geocoder.lookup(coord)
async def search(self, query: str, **params: Any) -> SearchResults:
""" Find a place by free-text search. Also known as forward geocoding.
"""
query = query.strip()
if not query:
raise UsageError('Nothing to search for.')
async with self.begin() as conn:
conn.set_query_timeout(self.query_timeout)
geocoder = ForwardGeocoder(conn, ntyp.SearchDetails.from_kwargs(params),
self.config.get_int('REQUEST_TIMEOUT') \
if self.config.REQUEST_TIMEOUT else None)
phrases = [Phrase(PhraseType.NONE, p.strip()) for p in query.split(',')]
return await geocoder.lookup(phrases)
# pylint: disable=too-many-arguments,too-many-branches
async def search_address(self, amenity: Optional[str] = None,
street: Optional[str] = None,
city: Optional[str] = None,
county: Optional[str] = None,
state: Optional[str] = None,
country: Optional[str] = None,
postalcode: Optional[str] = None,
**params: Any) -> SearchResults:
""" Find an address using structured search.
"""
async with self.begin() as conn:
conn.set_query_timeout(self.query_timeout)
details = ntyp.SearchDetails.from_kwargs(params)
phrases: List[Phrase] = []
if amenity:
phrases.append(Phrase(PhraseType.AMENITY, amenity))
if street:
phrases.append(Phrase(PhraseType.STREET, street))
if city:
phrases.append(Phrase(PhraseType.CITY, city))
if county:
phrases.append(Phrase(PhraseType.COUNTY, county))
if state:
phrases.append(Phrase(PhraseType.STATE, state))
if postalcode:
phrases.append(Phrase(PhraseType.POSTCODE, postalcode))
if country:
phrases.append(Phrase(PhraseType.COUNTRY, country))
if not phrases:
raise UsageError('Nothing to search for.')
if amenity or street:
details.restrict_min_max_rank(26, 30)
elif city:
details.restrict_min_max_rank(13, 25)
elif county:
details.restrict_min_max_rank(10, 12)
elif state:
details.restrict_min_max_rank(5, 9)
elif postalcode:
details.restrict_min_max_rank(5, 11)
else:
details.restrict_min_max_rank(4, 4)
if 'layers' not in params:
details.layers = ntyp.DataLayer.ADDRESS
if amenity:
details.layers |= ntyp.DataLayer.POI
geocoder = ForwardGeocoder(conn, details,
self.config.get_int('REQUEST_TIMEOUT') \
if self.config.REQUEST_TIMEOUT else None)
return await geocoder.lookup(phrases)
async def search_category(self, categories: List[Tuple[str, str]],
near_query: Optional[str] = None,
**params: Any) -> SearchResults:
""" Find an object of a certain category near another place.
The near place may either be given as an unstructured search
query in itself or as coordinates.
"""
if not categories:
return SearchResults()
details = ntyp.SearchDetails.from_kwargs(params)
async with self.begin() as conn:
conn.set_query_timeout(self.query_timeout)
if near_query:
phrases = [Phrase(PhraseType.NONE, p) for p in near_query.split(',')]
else:
phrases = []
if details.keywords:
await make_query_analyzer(conn)
geocoder = ForwardGeocoder(conn, details,
self.config.get_int('REQUEST_TIMEOUT') \
if self.config.REQUEST_TIMEOUT else None)
return await geocoder.lookup_pois(categories, phrases)
class NominatimAPI:
""" This class provides a thin synchronous wrapper around the asynchronous
Nominatim functions. It creates its own event loop and runs each
synchronous function call to completion using that loop.
"""
def __init__(self, project_dir: Path,
environ: Optional[Mapping[str, str]] = None) -> None:
""" Initiate a new frontend object with synchronous API functions.
Parameters:
project_dir: Path to the
[project directory](../admin/Import.md#creating-the-project-directory)
of the local Nominatim installation.
environ: Mapping of [configuration parameters](../customize/Settings.md).
When set, replaces any configuration via environment variables.
Settings in this mapping also have precedence over any
parameters found in the `.env` file of the project directory.
"""
self._loop = asyncio.new_event_loop()
self._async_api = NominatimAPIAsync(project_dir, environ, loop=self._loop)
def close(self) -> None:
""" Close all active connections to the database.
This function also closes the asynchronous worker loop making
the NominatimAPI object unusuable.
"""
self._loop.run_until_complete(self._async_api.close())
self._loop.close()
@property
def config(self) -> Configuration:
""" Provide read-only access to the [configuration](#Configuration)
used by the API.
"""
return self._async_api.config
def status(self) -> StatusResult:
""" Return the status of the database as a dataclass object
with the fields described below.
Returns:
status(int): A status code as described on the status page.
message(str): Either 'OK' or a human-readable message of the
problem encountered.
software_version(tuple): A tuple with the version of the
Nominatim library consisting of (major, minor, patch, db-patch)
version.
database_version(tuple): A tuple with the version of the library
which was used for the import or last migration.
Also consists of (major, minor, patch, db-patch).
data_updated(datetime): Timestamp with the age of the data.
"""
return self._loop.run_until_complete(self._async_api.status())
def details(self, place: ntyp.PlaceRef, **params: Any) -> Optional[DetailedResult]:
""" Get detailed information about a place in the database.
The result is a dataclass object with the fields described below
or `None` if the place could not be found in the database.
Parameters:
place: Description of the place to look up. See
[Place identification](Input-Parameter-Types.md#place-identification)
for the various ways to reference a place.
Other parameters:
geometry_output (enum): Add the full geometry of the place to the result.
Multiple formats may be selected. Note that geometries can become
quite large. (Default: none)
geometry_simplification (float): Simplification factor to use on
the geometries before returning them. The factor expresses
the tolerance in degrees from which the geometry may differ.
Topology is preserved. (Default: 0.0)
address_details (bool): Add detailed information about the places
that make up the address of the requested object. (Default: False)
linked_places (bool): Add detailed information about the places
that link to the result. (Default: False)
parented_places (bool): Add detailed information about all places
for which the requested object is a parent, i.e. all places for
which the object provides the address details.
Only POI places can have parents. (Default: False)
keywords (bool): Add detailed information about the search terms
used for this place.
Returns:
source_table (enum): Data source of the place. See below for possible values.
category (tuple): A tuple of two strings with the primary OSM tag
and value.
centroid (Point): Point position of the place.
place_id (Optional[int]): Internal ID of the place. This ID may differ
for the same place between different installations.
parent_place_id (Optional(int]): Internal ID of the parent of this
place. Only meaning full for POI-like objects (places with a
rank_address of 30).
linked_place_id (Optional[int]): Internal ID of the place this object
linkes to. When this ID is set then there is no guarantee that
the rest of the result information is complete.
admin_level (int): Value of the `admin_level` OSM tag. Only meaningful
for administrative boundary objects.
indexed_date (datetime): Timestamp when the place was last updated.
osm_object (Optional[tuple]): OSM type and ID of the place, if available.
names (Optional[dict]): Dictionary of names of the place. Keys are
usually the corresponding OSM tag keys.
address (Optional[dict]): Dictionary of address parts directly
attributed to the place. Keys are usually the corresponding
OSM tag keys with the `addr:` prefix removed.
extratags (Optional[dict]): Dictionary of additional attributes for
the place. Usually OSM tag keys and values.
housenumber (Optional[str]): House number of the place, normalised
for lookup. To get the house number in its original spelling,
use `address['housenumber']`.
postcode (Optional[str]): Computed postcode for the place. To get
directly attributed postcodes, use `address['postcode']` instead.
wikipedia (Optional[str]): Reference to a wikipedia site for the place.
The string has the format <language code>:<wikipedia title>.
rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
importance (Optional[float]): Relative importance of the place. This is a measure
how likely the place will be searched for.
country_code (Optional[str]): Country the feature is in as
ISO 3166-1 alpha-2 country code.
address_rows (Optional[AddressLines]): List of places that make up the
computed address. `None` when `address_details` parameter was False.
linked_rows (Optional[AddressLines]): List of places that link to the object.
`None` when `linked_places` parameter was False.
parented_rows (Optional[AddressLines]): List of direct children of the place.
`None` when `parented_places` parameter was False.
name_keywords (Optional[WordInfos]): List of search words for the name of
the place. `None` when `keywords` parameter is set to False.
address_keywords (Optional[WordInfos]): List of search word for the address of
the place. `None` when `keywords` parameter is set to False.
geometry (dict): Dictionary containing the full geometry of the place
in the formats requested in the `geometry_output` parameter.
"""
return self._loop.run_until_complete(self._async_api.details(place, **params))
def lookup(self, places: Sequence[ntyp.PlaceRef], **params: Any) -> SearchResults:
""" Get simple information about a list of places.
Returns a list of place information for all IDs that were found.
Each result is a dataclass with the fields detailed below.
Parameters:
places: List of descriptions of the place to look up. See
[Place identification](Input-Parameter-Types.md#place-identification)
for the various ways to reference a place.
Other parameters:
geometry_output (enum): Add the full geometry of the place to the result.
Multiple formats may be selected. Note that geometries can become
quite large. (Default: none)
geometry_simplification (float): Simplification factor to use on
the geometries before returning them. The factor expresses
the tolerance in degrees from which the geometry may differ.
Topology is preserved. (Default: 0.0)
address_details (bool): Add detailed information about the places
that make up the address of the requested object. (Default: False)
linked_places (bool): Add detailed information about the places
that link to the result. (Default: False)
parented_places (bool): Add detailed information about all places
for which the requested object is a parent, i.e. all places for
which the object provides the address details.
Only POI places can have parents. (Default: False)
keywords (bool): Add detailed information about the search terms
used for this place.
Returns:
source_table (enum): Data source of the place. See below for possible values.
category (tuple): A tuple of two strings with the primary OSM tag
and value.
centroid (Point): Point position of the place.
place_id (Optional[int]): Internal ID of the place. This ID may differ
for the same place between different installations.
osm_object (Optional[tuple]): OSM type and ID of the place, if available.
names (Optional[dict]): Dictionary of names of the place. Keys are
usually the corresponding OSM tag keys.
address (Optional[dict]): Dictionary of address parts directly
attributed to the place. Keys are usually the corresponding
OSM tag keys with the `addr:` prefix removed.
extratags (Optional[dict]): Dictionary of additional attributes for
the place. Usually OSM tag keys and values.
housenumber (Optional[str]): House number of the place, normalised
for lookup. To get the house number in its original spelling,
use `address['housenumber']`.
postcode (Optional[str]): Computed postcode for the place. To get
directly attributed postcodes, use `address['postcode']` instead.
wikipedia (Optional[str]): Reference to a wikipedia site for the place.
The string has the format <language code>:<wikipedia title>.
rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
importance (Optional[float]): Relative importance of the place. This is a measure
how likely the place will be searched for.
country_code (Optional[str]): Country the feature is in as
ISO 3166-1 alpha-2 country code.
address_rows (Optional[AddressLines]): List of places that make up the
computed address. `None` when `address_details` parameter was False.
linked_rows (Optional[AddressLines]): List of places that link to the object.
`None` when `linked_places` parameter was False.
parented_rows (Optional[AddressLines]): List of direct children of the place.
`None` when `parented_places` parameter was False.
name_keywords (Optional[WordInfos]): List of search words for the name of
the place. `None` when `keywords` parameter is set to False.
address_keywords (Optional[WordInfos]): List of search word for the address of
the place. `None` when `keywords` parameter is set to False.
bbox (Bbox): Bounding box of the full geometry of the place.
If the place is a single point, then the size of the bounding
box is guessed according to the type of place.
geometry (dict): Dictionary containing the full geometry of the place
in the formats requested in the `geometry_output` parameter.
"""
return self._loop.run_until_complete(self._async_api.lookup(places, **params))
def reverse(self, coord: ntyp.AnyPoint, **params: Any) -> Optional[ReverseResult]:
""" Find a place by its coordinates. Also known as reverse geocoding.
Returns the closest result that can be found or `None` if
no place matches the given criteria. The result is a dataclass
with the fields as detailed below.
Parameters:
coord: Coordinate to lookup the place for as a Point
or a tuple (x, y). Must be in WGS84 projection.
Other parameters:
max_rank (int): Highest address rank to return. Can be used to
restrict search to streets or settlements.
layers (enum): Defines the kind of data to take into account.
See description of layers below. (Default: addresses and POIs)
geometry_output (enum): Add the full geometry of the place to the result.
Multiple formats may be selected. Note that geometries can become
quite large. (Default: none)
geometry_simplification (float): Simplification factor to use on
the geometries before returning them. The factor expresses
the tolerance in degrees from which the geometry may differ.
Topology is preserved. (Default: 0.0)
address_details (bool): Add detailed information about the places
that make up the address of the requested object. (Default: False)
linked_places (bool): Add detailed information about the places
that link to the result. (Default: False)
parented_places (bool): Add detailed information about all places
for which the requested object is a parent, i.e. all places for
which the object provides the address details.
Only POI places can have parents. (Default: False)
keywords (bool): Add detailed information about the search terms
used for this place.
Returns:
source_table (enum): Data source of the place. See below for possible values.
category (tuple): A tuple of two strings with the primary OSM tag
and value.
centroid (Point): Point position of the place.
place_id (Optional[int]): Internal ID of the place. This ID may differ
for the same place between different installations.
osm_object (Optional[tuple]): OSM type and ID of the place, if available.
names (Optional[dict]): Dictionary of names of the place. Keys are
usually the corresponding OSM tag keys.
address (Optional[dict]): Dictionary of address parts directly
attributed to the place. Keys are usually the corresponding
OSM tag keys with the `addr:` prefix removed.
extratags (Optional[dict]): Dictionary of additional attributes for
the place. Usually OSM tag keys and values.
housenumber (Optional[str]): House number of the place, normalised
for lookup. To get the house number in its original spelling,
use `address['housenumber']`.
postcode (Optional[str]): Computed postcode for the place. To get
directly attributed postcodes, use `address['postcode']` instead.
wikipedia (Optional[str]): Reference to a wikipedia site for the place.
The string has the format <language code>:<wikipedia title>.
rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
importance (Optional[float]): Relative importance of the place. This is a measure
how likely the place will be searched for.
country_code (Optional[str]): Country the feature is in as
ISO 3166-1 alpha-2 country code.
address_rows (Optional[AddressLines]): List of places that make up the
computed address. `None` when `address_details` parameter was False.
linked_rows (Optional[AddressLines]): List of places that link to the object.
`None` when `linked_places` parameter was False.
parented_rows (Optional[AddressLines]): List of direct children of the place.
`None` when `parented_places` parameter was False.
name_keywords (Optional[WordInfos]): List of search words for the name of
the place. `None` when `keywords` parameter is set to False.
address_keywords (Optional[WordInfos]): List of search word for the address of
the place. `None` when `keywords` parameter is set to False.
bbox (Bbox): Bounding box of the full geometry of the place.
If the place is a single point, then the size of the bounding
box is guessed according to the type of place.
geometry (dict): Dictionary containing the full geometry of the place
in the formats requested in the `geometry_output` parameter.
distance (Optional[float]): Distance in degree from the input point.
"""
return self._loop.run_until_complete(self._async_api.reverse(coord, **params))
def search(self, query: str, **params: Any) -> SearchResults:
""" Find a place by free-text search. Also known as forward geocoding.
Parameters:
query: Free-form text query searching for a place.
Other parameters:
max_results (int): Maximum number of results to return. The
actual number of results may be less. (Default: 10)
min_rank (int): Lowest permissible rank for the result.
For addressable places this is the minimum
[address rank](../customize/Ranking.md#address-rank). For all
other places the [search rank](../customize/Ranking.md#search-rank)
is used.
max_rank (int): Highest permissible rank for the result. See min_rank above.
layers (enum): Defines the kind of data to take into account.
See [layers section](Input-Parameter-Types.md#layers) for details.
(Default: addresses and POIs)
countries (list[str]): Restrict search to countries with the given
ISO 3166-1 alpha-2 country code. An empty list (the default)
disables this filter.
excluded (list[int]): A list of internal IDs of places to exclude
from the search.
viewbox (Optional[Bbox]): Bounding box of an area to focus search on.
bounded_viewbox (bool): Consider the bounding box given in `viewbox`
as a filter and return only results within the bounding box.
near (Optional[Point]): Focus search around the given point and
return results ordered by distance to the given point.
near_radius (Optional[float]): Restrict results to results within
the given distance in degrees of `near` point. Ignored, when
`near` is not set.
categories (list[tuple]): Restrict search to places of the given
categories. The category is the main OSM tag assigned to each
place. An empty list (the default) disables this filter.
geometry_output (enum): Add the full geometry of the place to the result.
Multiple formats may be selected. Note that geometries can become
quite large. (Default: none)
geometry_simplification (float): Simplification factor to use on
the geometries before returning them. The factor expresses
the tolerance in degrees from which the geometry may differ.
Topology is preserved. (Default: 0.0)
address_details (bool): Add detailed information about the places
that make up the address of the requested object. (Default: False)
linked_places (bool): Add detailed information about the places
that link to the result. (Default: False)
parented_places (bool): Add detailed information about all places
for which the requested object is a parent, i.e. all places for
which the object provides the address details.
Only POI places can have parents. (Default: False)
keywords (bool): Add detailed information about the search terms
used for this place.
Returns:
source_table (enum): Data source of the place. See below for possible values.
category (tuple): A tuple of two strings with the primary OSM tag
and value.
centroid (Point): Point position of the place.
place_id (Optional[int]): Internal ID of the place. This ID may differ
for the same place between different installations.
osm_object (Optional[tuple]): OSM type and ID of the place, if available.
names (Optional[dict]): Dictionary of names of the place. Keys are
usually the corresponding OSM tag keys.
address (Optional[dict]): Dictionary of address parts directly
attributed to the place. Keys are usually the corresponding
OSM tag keys with the `addr:` prefix removed.
extratags (Optional[dict]): Dictionary of additional attributes for
the place. Usually OSM tag keys and values.
housenumber (Optional[str]): House number of the place, normalised
for lookup. To get the house number in its original spelling,
use `address['housenumber']`.
postcode (Optional[str]): Computed postcode for the place. To get
directly attributed postcodes, use `address['postcode']` instead.
wikipedia (Optional[str]): Reference to a wikipedia site for the place.
The string has the format <language code>:<wikipedia title>.
rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
importance (Optional[float]): Relative importance of the place. This is a measure
how likely the place will be searched for.
country_code (Optional[str]): Country the feature is in as
ISO 3166-1 alpha-2 country code.
address_rows (Optional[AddressLines]): List of places that make up the
computed address. `None` when `address_details` parameter was False.
linked_rows (Optional[AddressLines]): List of places that link to the object.
`None` when `linked_places` parameter was False.
parented_rows (Optional[AddressLines]): List of direct children of the place.
`None` when `parented_places` parameter was False.
name_keywords (Optional[WordInfos]): List of search words for the name of
the place. `None` when `keywords` parameter is set to False.
address_keywords (Optional[WordInfos]): List of search word for the address of
the place. `None` when `keywords` parameter is set to False.
bbox (Bbox): Bounding box of the full geometry of the place.
If the place is a single point, then the size of the bounding
box is guessed according to the type of place.
geometry (dict): Dictionary containing the full geometry of the place
in the formats requested in the `geometry_output` parameter.
"""
return self._loop.run_until_complete(
self._async_api.search(query, **params))
# pylint: disable=too-many-arguments
def search_address(self, amenity: Optional[str] = None,
street: Optional[str] = None,
city: Optional[str] = None,
county: Optional[str] = None,
state: Optional[str] = None,
country: Optional[str] = None,
postalcode: Optional[str] = None,
**params: Any) -> SearchResults:
""" Find an address using structured search.
Parameters:
amenity: Name of a POI.
street: Street and optionally housenumber of the address. If the address
does not have a street, then the place the housenumber references to.
city: Postal city of the address.
county: County equivalent of the address. Does not exist in all
jurisdictions.
state: State or province of the address.
country: Country with its full name or its ISO 3166-1 alpha-2 country code.
Do not use together with the country_code filter.
postalcode: Post code or ZIP for the place.
Other parameters:
max_results (int): Maximum number of results to return. The
actual number of results may be less. (Default: 10)
min_rank (int): Lowest permissible rank for the result.
For addressable places this is the minimum
[address rank](../customize/Ranking.md#address-rank). For all
other places the [search rank](../customize/Ranking.md#search-rank)
is used.
max_rank (int): Highest permissible rank for the result. See min_rank above.
layers (enum): Defines the kind of data to take into account.
See [layers section](Input-Parameter-Types.md#layers) for details.
(Default: addresses and POIs)
countries (list[str]): Restrict search to countries with the given
ISO 3166-1 alpha-2 country code. An empty list (the default)
disables this filter. Do not use, when the country parameter
is used.
excluded (list[int]): A list of internal IDs of places to exclude
from the search.
viewbox (Optional[Bbox]): Bounding box of an area to focus search on.
bounded_viewbox (bool): Consider the bounding box given in `viewbox`
as a filter and return only results within the bounding box.
near (Optional[Point]): Focus search around the given point and
return results ordered by distance to the given point.
near_radius (Optional[float]): Restrict results to results within
the given distance in degrees of `near` point. Ignored, when
`near` is not set.
categories (list[tuple]): Restrict search to places of the given
categories. The category is the main OSM tag assigned to each
place. An empty list (the default) disables this filter.
geometry_output (enum): Add the full geometry of the place to the result.
Multiple formats may be selected. Note that geometries can become
quite large. (Default: none)
geometry_simplification (float): Simplification factor to use on
the geometries before returning them. The factor expresses
the tolerance in degrees from which the geometry may differ.
Topology is preserved. (Default: 0.0)
address_details (bool): Add detailed information about the places
that make up the address of the requested object. (Default: False)
linked_places (bool): Add detailed information about the places
that link to the result. (Default: False)
parented_places (bool): Add detailed information about all places
for which the requested object is a parent, i.e. all places for
which the object provides the address details.
Only POI places can have parents. (Default: False)
keywords (bool): Add detailed information about the search terms
used for this place.
Returns:
source_table (enum): Data source of the place. See below for possible values.
category (tuple): A tuple of two strings with the primary OSM tag
and value.
centroid (Point): Point position of the place.
place_id (Optional[int]): Internal ID of the place. This ID may differ
for the same place between different installations.
osm_object (Optional[tuple]): OSM type and ID of the place, if available.
names (Optional[dict]): Dictionary of names of the place. Keys are
usually the corresponding OSM tag keys.
address (Optional[dict]): Dictionary of address parts directly
attributed to the place. Keys are usually the corresponding
OSM tag keys with the `addr:` prefix removed.
extratags (Optional[dict]): Dictionary of additional attributes for
the place. Usually OSM tag keys and values.
housenumber (Optional[str]): House number of the place, normalised
for lookup. To get the house number in its original spelling,
use `address['housenumber']`.
postcode (Optional[str]): Computed postcode for the place. To get
directly attributed postcodes, use `address['postcode']` instead.
wikipedia (Optional[str]): Reference to a wikipedia site for the place.
The string has the format <language code>:<wikipedia title>.
rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
importance (Optional[float]): Relative importance of the place. This is a measure
how likely the place will be searched for.
country_code (Optional[str]): Country the feature is in as
ISO 3166-1 alpha-2 country code.
address_rows (Optional[AddressLines]): List of places that make up the
computed address. `None` when `address_details` parameter was False.
linked_rows (Optional[AddressLines]): List of places that link to the object.
`None` when `linked_places` parameter was False.
parented_rows (Optional[AddressLines]): List of direct children of the place.
`None` when `parented_places` parameter was False.
name_keywords (Optional[WordInfos]): List of search words for the name of
the place. `None` when `keywords` parameter is set to False.
address_keywords (Optional[WordInfos]): List of search word for the address of
the place. `None` when `keywords` parameter is set to False.
bbox (Bbox): Bounding box of the full geometry of the place.
If the place is a single point, then the size of the bounding
box is guessed according to the type of place.
geometry (dict): Dictionary containing the full geometry of the place
in the formats requested in the `geometry_output` parameter.
"""
return self._loop.run_until_complete(
self._async_api.search_address(amenity, street, city, county,
state, country, postalcode, **params))
def search_category(self, categories: List[Tuple[str, str]],
near_query: Optional[str] = None,
**params: Any) -> SearchResults:
""" Find an object of a certain category near another place.
The near place may either be given as an unstructured search
query in itself or as a geographic area through the
viewbox or near parameters.
Parameters:
categories: Restrict search to places of the given
categories. The category is the main OSM tag assigned to each
place.
near_query: Optional free-text query to define the are to
restrict search to.
Other parameters:
max_results (int): Maximum number of results to return. The
actual number of results may be less. (Default: 10)
min_rank (int): Lowest permissible rank for the result.
For addressable places this is the minimum
[address rank](../customize/Ranking.md#address-rank). For all
other places the [search rank](../customize/Ranking.md#search-rank)
is used.
max_rank (int): Highest permissible rank for the result. See min_rank above.
layers (enum): Defines the kind of data to take into account.
See [layers section](Input-Parameter-Types.md#layers) for details.
(Default: addresses and POIs)
countries (list[str]): Restrict search to countries with the given
ISO 3166-1 alpha-2 country code. An empty list (the default)
disables this filter.
excluded (list[int]): A list of internal IDs of places to exclude
from the search.
viewbox (Optional[Bbox]): Bounding box of an area to focus search on.
bounded_viewbox (bool): Consider the bounding box given in `viewbox`
as a filter and return only results within the bounding box.
near (Optional[Point]): Focus search around the given point and
return results ordered by distance to the given point.
near_radius (Optional[float]): Restrict results to results within
the given distance in degrees of `near` point. Ignored, when
`near` is not set.
geometry_output (enum): Add the full geometry of the place to the result.
Multiple formats may be selected. Note that geometries can become
quite large. (Default: none)
geometry_simplification (float): Simplification factor to use on
the geometries before returning them. The factor expresses
the tolerance in degrees from which the geometry may differ.
Topology is preserved. (Default: 0.0)
address_details (bool): Add detailed information about the places
that make up the address of the requested object. (Default: False)
linked_places (bool): Add detailed information about the places
that link to the result. (Default: False)
parented_places (bool): Add detailed information about all places
for which the requested object is a parent, i.e. all places for
which the object provides the address details.
Only POI places can have parents. (Default: False)
keywords (bool): Add detailed information about the search terms
used for this place.
Returns:
source_table (enum): Data source of the place. See below for possible values.
category (tuple): A tuple of two strings with the primary OSM tag
and value.
centroid (Point): Point position of the place.
place_id (Optional[int]): Internal ID of the place. This ID may differ
for the same place between different installations.
osm_object (Optional[tuple]): OSM type and ID of the place, if available.
names (Optional[dict]): Dictionary of names of the place. Keys are
usually the corresponding OSM tag keys.
address (Optional[dict]): Dictionary of address parts directly
attributed to the place. Keys are usually the corresponding
OSM tag keys with the `addr:` prefix removed.
extratags (Optional[dict]): Dictionary of additional attributes for
the place. Usually OSM tag keys and values.
housenumber (Optional[str]): House number of the place, normalised
for lookup. To get the house number in its original spelling,
use `address['housenumber']`.
postcode (Optional[str]): Computed postcode for the place. To get
directly attributed postcodes, use `address['postcode']` instead.
wikipedia (Optional[str]): Reference to a wikipedia site for the place.
The string has the format <language code>:<wikipedia title>.
rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
importance (Optional[float]): Relative importance of the place. This is a measure
how likely the place will be searched for.
country_code (Optional[str]): Country the feature is in as
ISO 3166-1 alpha-2 country code.
address_rows (Optional[AddressLines]): List of places that make up the
computed address. `None` when `address_details` parameter was False.
linked_rows (Optional[AddressLines]): List of places that link to the object.
`None` when `linked_places` parameter was False.
parented_rows (Optional[AddressLines]): List of direct children of the place.
`None` when `parented_places` parameter was False.
name_keywords (Optional[WordInfos]): List of search words for the name of
the place. `None` when `keywords` parameter is set to False.
address_keywords (Optional[WordInfos]): List of search word for the address of
the place. `None` when `keywords` parameter is set to False.
bbox (Bbox): Bounding box of the full geometry of the place.
If the place is a single point, then the size of the bounding
box is guessed according to the type of place.
geometry (dict): Dictionary containing the full geometry of the place
in the formats requested in the `geometry_output` parameter.
"""
return self._loop.run_until_complete(
self._async_api.search_category(categories, near_query, **params))
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