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 Implementation of classes for API access via libraries.
10 from typing import Mapping, Optional, Any, AsyncIterator, Dict, Sequence, List, Tuple, cast
14 from pathlib import Path
16 import sqlalchemy as sa
17 import sqlalchemy.ext.asyncio as sa_asyncio
19 from .errors import UsageError
20 from .sql.sqlalchemy_schema import SearchTables
21 from .sql.async_core_library import PGCORE_LIB, PGCORE_ERROR
22 from .config import Configuration
23 from .sql import sqlite_functions, sqlalchemy_functions #pylint: disable=unused-import
24 from .connection import SearchConnection
25 from .status import get_status, StatusResult
26 from .lookup import get_detailed_place, get_simple_place
27 from .reverse import ReverseGeocoder
28 from .search import ForwardGeocoder, Phrase, PhraseType, make_query_analyzer
29 from . import types as ntyp
30 from .results import DetailedResult, ReverseResult, SearchResults
33 class NominatimAPIAsync: #pylint: disable=too-many-instance-attributes
34 """ The main frontend to the Nominatim database implements the
35 functions for lookup, forward and reverse geocoding using
36 asynchronous functions.
38 This class shares most of the functions with its synchronous
39 version. There are some additional functions or parameters,
40 which are documented below.
42 def __init__(self, project_dir: Path,
43 environ: Optional[Mapping[str, str]] = None,
44 loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
45 """ Initiate a new frontend object with synchronous API functions.
48 project_dir: Path to the
49 [project directory](../admin/Import.md#creating-the-project-directory)
50 of the local Nominatim installation.
51 environ: Mapping of [configuration parameters](../customize/Settings.md).
52 When set, replaces any configuration via environment variables.
53 Settings in this mapping also have precedence over any
54 parameters found in the `.env` file of the project directory.
55 loop: The asyncio event loop that will be used when calling
56 functions. Only needed, when a custom event loop is used
57 and the Python version is 3.9 or earlier.
59 self.config = Configuration(project_dir, environ)
60 self.query_timeout = self.config.get_int('QUERY_TIMEOUT') \
61 if self.config.QUERY_TIMEOUT else None
62 self.reverse_restrict_to_country_area = self.config.get_bool('SEARCH_WITHIN_COUNTRIES')
63 self.server_version = 0
65 if sys.version_info >= (3, 10):
66 self._engine_lock = asyncio.Lock()
68 self._engine_lock = asyncio.Lock(loop=loop) # pylint: disable=unexpected-keyword-arg
69 self._engine: Optional[sa_asyncio.AsyncEngine] = None
70 self._tables: Optional[SearchTables] = None
71 self._property_cache: Dict[str, Any] = {'DB:server_version': 0}
74 async def setup_database(self) -> None:
75 """ Set up the SQL engine and connections.
77 This function will be implicitly called when the database is
78 accessed for the first time. You may also call it explicitly to
79 avoid that the first call is delayed by the setup.
81 async with self._engine_lock:
85 extra_args: Dict[str, Any] = {'future': True,
86 'echo': self.config.get_bool('DEBUG_SQL')}
88 if self.config.get_int('API_POOL_SIZE') == 0:
89 extra_args['poolclass'] = sa.pool.NullPool
91 extra_args['poolclass'] = sa.pool.AsyncAdaptedQueuePool
92 extra_args['max_overflow'] = 0
93 extra_args['pool_size'] = self.config.get_int('API_POOL_SIZE')
96 is_sqlite = self.config.DATABASE_DSN.startswith('sqlite:')
99 params = dict((p.split('=', 1)
100 for p in self.config.DATABASE_DSN[7:].split(';')))
101 dburl = sa.engine.URL.create('sqlite+aiosqlite',
102 database=params.get('dbname'))
104 if not ('NOMINATIM_DATABASE_RW' in self.config.environ
105 and self.config.get_bool('DATABASE_RW')) \
106 and not Path(params.get('dbname', '')).is_file():
107 raise UsageError(f"SQlite database '{params.get('dbname')}' does not exist.")
109 dsn = self.config.get_database_params()
110 query = {k: str(v) for k, v in dsn.items()
111 if k not in ('user', 'password', 'dbname', 'host', 'port')}
113 dburl = sa.engine.URL.create(
114 f'postgresql+{PGCORE_LIB}',
115 database=cast(str, dsn.get('dbname')),
116 username=cast(str, dsn.get('user')),
117 password=cast(str, dsn.get('password')),
118 host=cast(str, dsn.get('host')),
119 port=int(cast(str, dsn['port'])) if 'port' in dsn else None,
122 engine = sa_asyncio.create_async_engine(dburl, **extra_args)
127 @sa.event.listens_for(engine.sync_engine, "connect")
128 def _on_sqlite_connect(dbapi_con: Any, _: Any) -> None:
129 dbapi_con.run_async(lambda conn: conn.enable_load_extension(True))
130 sqlite_functions.install_custom_functions(dbapi_con)
131 cursor = dbapi_con.cursor()
132 cursor.execute("SELECT load_extension('mod_spatialite')")
133 cursor.execute('SELECT SetDecimalPrecision(7)')
134 dbapi_con.run_async(lambda conn: conn.enable_load_extension(False))
137 async with engine.begin() as conn:
138 result = await conn.scalar(sa.text('SHOW server_version_num'))
139 server_version = int(result)
140 if server_version >= 110000:
141 await conn.execute(sa.text("SET jit_above_cost TO '-1'"))
142 await conn.execute(sa.text(
143 "SET max_parallel_workers_per_gather TO '0'"))
144 except (PGCORE_ERROR, sa.exc.OperationalError):
147 if server_version >= 110000:
148 @sa.event.listens_for(engine.sync_engine, "connect")
149 def _on_connect(dbapi_con: Any, _: Any) -> None:
150 cursor = dbapi_con.cursor()
151 cursor.execute("SET jit_above_cost TO '-1'")
152 cursor.execute("SET max_parallel_workers_per_gather TO '0'")
154 self._property_cache['DB:server_version'] = server_version
156 self._tables = SearchTables(sa.MetaData()) # pylint: disable=no-member
157 self._engine = engine
160 async def close(self) -> None:
161 """ Close all active connections to the database. The NominatimAPIAsync
162 object remains usable after closing. If a new API functions is
163 called, new connections are created.
165 if self._engine is not None:
166 await self._engine.dispose()
169 @contextlib.asynccontextmanager
170 async def begin(self) -> AsyncIterator[SearchConnection]:
171 """ Create a new connection with automatic transaction handling.
173 This function may be used to get low-level access to the database.
174 Refer to the documentation of SQLAlchemy for details how to use
175 the connection object.
177 if self._engine is None:
178 await self.setup_database()
180 assert self._engine is not None
181 assert self._tables is not None
183 async with self._engine.begin() as conn:
184 yield SearchConnection(conn, self._tables, self._property_cache)
187 async def status(self) -> StatusResult:
188 """ Return the status of the database.
191 async with self.begin() as conn:
192 conn.set_query_timeout(self.query_timeout)
193 status = await get_status(conn)
194 except (PGCORE_ERROR, sa.exc.OperationalError):
195 return StatusResult(700, 'Database connection failed')
200 async def details(self, place: ntyp.PlaceRef, **params: Any) -> Optional[DetailedResult]:
201 """ Get detailed information about a place in the database.
203 Returns None if there is no entry under the given ID.
205 details = ntyp.LookupDetails.from_kwargs(params)
206 async with self.begin() as conn:
207 conn.set_query_timeout(self.query_timeout)
209 await make_query_analyzer(conn)
210 return await get_detailed_place(conn, place, details)
213 async def lookup(self, places: Sequence[ntyp.PlaceRef], **params: Any) -> SearchResults:
214 """ Get simple information about a list of places.
216 Returns a list of place information for all IDs that were found.
218 details = ntyp.LookupDetails.from_kwargs(params)
219 async with self.begin() as conn:
220 conn.set_query_timeout(self.query_timeout)
222 await make_query_analyzer(conn)
223 return SearchResults(filter(None,
224 [await get_simple_place(conn, p, details) for p in places]))
227 async def reverse(self, coord: ntyp.AnyPoint, **params: Any) -> Optional[ReverseResult]:
228 """ Find a place by its coordinates. Also known as reverse geocoding.
230 Returns the closest result that can be found or None if
231 no place matches the given criteria.
233 # The following negation handles NaN correctly. Don't change.
234 if not abs(coord[0]) <= 180 or not abs(coord[1]) <= 90:
235 # There are no results to be expected outside valid coordinates.
238 details = ntyp.ReverseDetails.from_kwargs(params)
239 async with self.begin() as conn:
240 conn.set_query_timeout(self.query_timeout)
242 await make_query_analyzer(conn)
243 geocoder = ReverseGeocoder(conn, details,
244 self.reverse_restrict_to_country_area)
245 return await geocoder.lookup(coord)
248 async def search(self, query: str, **params: Any) -> SearchResults:
249 """ Find a place by free-text search. Also known as forward geocoding.
251 query = query.strip()
253 raise UsageError('Nothing to search for.')
255 async with self.begin() as conn:
256 conn.set_query_timeout(self.query_timeout)
257 geocoder = ForwardGeocoder(conn, ntyp.SearchDetails.from_kwargs(params),
258 self.config.get_int('REQUEST_TIMEOUT') \
259 if self.config.REQUEST_TIMEOUT else None)
260 phrases = [Phrase(PhraseType.NONE, p.strip()) for p in query.split(',')]
261 return await geocoder.lookup(phrases)
264 # pylint: disable=too-many-arguments,too-many-branches
265 async def search_address(self, amenity: Optional[str] = None,
266 street: Optional[str] = None,
267 city: Optional[str] = None,
268 county: Optional[str] = None,
269 state: Optional[str] = None,
270 country: Optional[str] = None,
271 postalcode: Optional[str] = None,
272 **params: Any) -> SearchResults:
273 """ Find an address using structured search.
275 async with self.begin() as conn:
276 conn.set_query_timeout(self.query_timeout)
277 details = ntyp.SearchDetails.from_kwargs(params)
279 phrases: List[Phrase] = []
282 phrases.append(Phrase(PhraseType.AMENITY, amenity))
284 phrases.append(Phrase(PhraseType.STREET, street))
286 phrases.append(Phrase(PhraseType.CITY, city))
288 phrases.append(Phrase(PhraseType.COUNTY, county))
290 phrases.append(Phrase(PhraseType.STATE, state))
292 phrases.append(Phrase(PhraseType.POSTCODE, postalcode))
294 phrases.append(Phrase(PhraseType.COUNTRY, country))
297 raise UsageError('Nothing to search for.')
299 if amenity or street:
300 details.restrict_min_max_rank(26, 30)
302 details.restrict_min_max_rank(13, 25)
304 details.restrict_min_max_rank(10, 12)
306 details.restrict_min_max_rank(5, 9)
308 details.restrict_min_max_rank(5, 11)
310 details.restrict_min_max_rank(4, 4)
312 if 'layers' not in params:
313 details.layers = ntyp.DataLayer.ADDRESS
315 details.layers |= ntyp.DataLayer.POI
317 geocoder = ForwardGeocoder(conn, details,
318 self.config.get_int('REQUEST_TIMEOUT') \
319 if self.config.REQUEST_TIMEOUT else None)
320 return await geocoder.lookup(phrases)
323 async def search_category(self, categories: List[Tuple[str, str]],
324 near_query: Optional[str] = None,
325 **params: Any) -> SearchResults:
326 """ Find an object of a certain category near another place.
327 The near place may either be given as an unstructured search
328 query in itself or as coordinates.
331 return SearchResults()
333 details = ntyp.SearchDetails.from_kwargs(params)
334 async with self.begin() as conn:
335 conn.set_query_timeout(self.query_timeout)
337 phrases = [Phrase(PhraseType.NONE, p) for p in near_query.split(',')]
341 await make_query_analyzer(conn)
343 geocoder = ForwardGeocoder(conn, details,
344 self.config.get_int('REQUEST_TIMEOUT') \
345 if self.config.REQUEST_TIMEOUT else None)
346 return await geocoder.lookup_pois(categories, phrases)
351 """ This class provides a thin synchronous wrapper around the asynchronous
352 Nominatim functions. It creates its own event loop and runs each
353 synchronous function call to completion using that loop.
356 def __init__(self, project_dir: Path,
357 environ: Optional[Mapping[str, str]] = None) -> None:
358 """ Initiate a new frontend object with synchronous API functions.
361 project_dir: Path to the
362 [project directory](../admin/Import.md#creating-the-project-directory)
363 of the local Nominatim installation.
364 environ: Mapping of [configuration parameters](../customize/Settings.md).
365 When set, replaces any configuration via environment variables.
366 Settings in this mapping also have precedence over any
367 parameters found in the `.env` file of the project directory.
369 self._loop = asyncio.new_event_loop()
370 self._async_api = NominatimAPIAsync(project_dir, environ, loop=self._loop)
373 def close(self) -> None:
374 """ Close all active connections to the database.
376 This function also closes the asynchronous worker loop making
377 the NominatimAPI object unusable.
379 self._loop.run_until_complete(self._async_api.close())
384 def config(self) -> Configuration:
385 """ Provide read-only access to the [configuration](Configuration.md)
388 return self._async_api.config
390 def status(self) -> StatusResult:
391 """ Return the status of the database as a dataclass object
392 with the fields described below.
395 status(int): A status code as described on the status page.
396 message(str): Either 'OK' or a human-readable message of the
398 software_version(tuple): A tuple with the version of the
399 Nominatim library consisting of (major, minor, patch, db-patch)
401 database_version(tuple): A tuple with the version of the library
402 which was used for the import or last migration.
403 Also consists of (major, minor, patch, db-patch).
404 data_updated(datetime): Timestamp with the age of the data.
406 return self._loop.run_until_complete(self._async_api.status())
409 def details(self, place: ntyp.PlaceRef, **params: Any) -> Optional[DetailedResult]:
410 """ Get detailed information about a place in the database.
412 The result is a dataclass object with the fields described below
413 or `None` if the place could not be found in the database.
416 place: Description of the place to look up. See
417 [Place identification](Input-Parameter-Types.md#place-identification)
418 for the various ways to reference a place.
421 geometry_output (enum): Add the full geometry of the place to the result.
422 Multiple formats may be selected. Note that geometries can become
423 quite large. (Default: none)
424 geometry_simplification (float): Simplification factor to use on
425 the geometries before returning them. The factor expresses
426 the tolerance in degrees from which the geometry may differ.
427 Topology is preserved. (Default: 0.0)
428 address_details (bool): Add detailed information about the places
429 that make up the address of the requested object. (Default: False)
430 linked_places (bool): Add detailed information about the places
431 that link to the result. (Default: False)
432 parented_places (bool): Add detailed information about all places
433 for which the requested object is a parent, i.e. all places for
434 which the object provides the address details.
435 Only POI places can have parents. (Default: False)
436 keywords (bool): Add detailed information about the search terms
440 source_table (enum): Data source of the place. See below for possible values.
441 category (tuple): A tuple of two strings with the primary OSM tag
443 centroid (Point): Point position of the place.
444 place_id (Optional[int]): Internal ID of the place. This ID may differ
445 for the same place between different installations.
446 parent_place_id (Optional(int]): Internal ID of the parent of this
447 place. Only meaning full for POI-like objects (places with a
449 linked_place_id (Optional[int]): Internal ID of the place this object
450 links to. When this ID is set then there is no guarantee that
451 the rest of the result information is complete.
452 admin_level (int): Value of the `admin_level` OSM tag. Only meaningful
453 for administrative boundary objects.
454 indexed_date (datetime): Timestamp when the place was last updated.
455 osm_object (Optional[tuple]): OSM type and ID of the place, if available.
456 names (Optional[dict]): Dictionary of names of the place. Keys are
457 usually the corresponding OSM tag keys.
458 address (Optional[dict]): Dictionary of address parts directly
459 attributed to the place. Keys are usually the corresponding
460 OSM tag keys with the `addr:` prefix removed.
461 extratags (Optional[dict]): Dictionary of additional attributes for
462 the place. Usually OSM tag keys and values.
463 housenumber (Optional[str]): House number of the place, normalised
464 for lookup. To get the house number in its original spelling,
465 use `address['housenumber']`.
466 postcode (Optional[str]): Computed postcode for the place. To get
467 directly attributed postcodes, use `address['postcode']` instead.
468 wikipedia (Optional[str]): Reference to a wikipedia site for the place.
469 The string has the format <language code>:<wikipedia title>.
470 rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
471 rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
472 importance (Optional[float]): Relative importance of the place. This is a measure
473 how likely the place will be searched for.
474 country_code (Optional[str]): Country the feature is in as
475 ISO 3166-1 alpha-2 country code.
476 address_rows (Optional[AddressLines]): List of places that make up the
477 computed address. `None` when `address_details` parameter was False.
478 linked_rows (Optional[AddressLines]): List of places that link to the object.
479 `None` when `linked_places` parameter was False.
480 parented_rows (Optional[AddressLines]): List of direct children of the place.
481 `None` when `parented_places` parameter was False.
482 name_keywords (Optional[WordInfos]): List of search words for the name of
483 the place. `None` when `keywords` parameter is set to False.
484 address_keywords (Optional[WordInfos]): List of search word for the address of
485 the place. `None` when `keywords` parameter is set to False.
486 geometry (dict): Dictionary containing the full geometry of the place
487 in the formats requested in the `geometry_output` parameter.
489 return self._loop.run_until_complete(self._async_api.details(place, **params))
492 def lookup(self, places: Sequence[ntyp.PlaceRef], **params: Any) -> SearchResults:
493 """ Get simple information about a list of places.
495 Returns a list of place information for all IDs that were found.
496 Each result is a dataclass with the fields detailed below.
499 places: List of descriptions of the place to look up. See
500 [Place identification](Input-Parameter-Types.md#place-identification)
501 for the various ways to reference a place.
504 geometry_output (enum): Add the full geometry of the place to the result.
505 Multiple formats may be selected. Note that geometries can become
506 quite large. (Default: none)
507 geometry_simplification (float): Simplification factor to use on
508 the geometries before returning them. The factor expresses
509 the tolerance in degrees from which the geometry may differ.
510 Topology is preserved. (Default: 0.0)
511 address_details (bool): Add detailed information about the places
512 that make up the address of the requested object. (Default: False)
513 linked_places (bool): Add detailed information about the places
514 that link to the result. (Default: False)
515 parented_places (bool): Add detailed information about all places
516 for which the requested object is a parent, i.e. all places for
517 which the object provides the address details.
518 Only POI places can have parents. (Default: False)
519 keywords (bool): Add detailed information about the search terms
523 source_table (enum): Data source of the place. See below for possible values.
524 category (tuple): A tuple of two strings with the primary OSM tag
526 centroid (Point): Point position of the place.
527 place_id (Optional[int]): Internal ID of the place. This ID may differ
528 for the same place between different installations.
529 osm_object (Optional[tuple]): OSM type and ID of the place, if available.
530 names (Optional[dict]): Dictionary of names of the place. Keys are
531 usually the corresponding OSM tag keys.
532 address (Optional[dict]): Dictionary of address parts directly
533 attributed to the place. Keys are usually the corresponding
534 OSM tag keys with the `addr:` prefix removed.
535 extratags (Optional[dict]): Dictionary of additional attributes for
536 the place. Usually OSM tag keys and values.
537 housenumber (Optional[str]): House number of the place, normalised
538 for lookup. To get the house number in its original spelling,
539 use `address['housenumber']`.
540 postcode (Optional[str]): Computed postcode for the place. To get
541 directly attributed postcodes, use `address['postcode']` instead.
542 wikipedia (Optional[str]): Reference to a wikipedia site for the place.
543 The string has the format <language code>:<wikipedia title>.
544 rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
545 rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
546 importance (Optional[float]): Relative importance of the place. This is a measure
547 how likely the place will be searched for.
548 country_code (Optional[str]): Country the feature is in as
549 ISO 3166-1 alpha-2 country code.
550 address_rows (Optional[AddressLines]): List of places that make up the
551 computed address. `None` when `address_details` parameter was False.
552 linked_rows (Optional[AddressLines]): List of places that link to the object.
553 `None` when `linked_places` parameter was False.
554 parented_rows (Optional[AddressLines]): List of direct children of the place.
555 `None` when `parented_places` parameter was False.
556 name_keywords (Optional[WordInfos]): List of search words for the name of
557 the place. `None` when `keywords` parameter is set to False.
558 address_keywords (Optional[WordInfos]): List of search word for the address of
559 the place. `None` when `keywords` parameter is set to False.
560 bbox (Bbox): Bounding box of the full geometry of the place.
561 If the place is a single point, then the size of the bounding
562 box is guessed according to the type of place.
563 geometry (dict): Dictionary containing the full geometry of the place
564 in the formats requested in the `geometry_output` parameter.
566 return self._loop.run_until_complete(self._async_api.lookup(places, **params))
569 def reverse(self, coord: ntyp.AnyPoint, **params: Any) -> Optional[ReverseResult]:
570 """ Find a place by its coordinates. Also known as reverse geocoding.
572 Returns the closest result that can be found or `None` if
573 no place matches the given criteria. The result is a dataclass
574 with the fields as detailed below.
577 coord: Coordinate to lookup the place for as a Point
578 or a tuple (x, y). Must be in WGS84 projection.
581 max_rank (int): Highest address rank to return. Can be used to
582 restrict search to streets or settlements.
583 layers (enum): Defines the kind of data to take into account.
584 See description of layers below. (Default: addresses and POIs)
585 geometry_output (enum): Add the full geometry of the place to the result.
586 Multiple formats may be selected. Note that geometries can become
587 quite large. (Default: none)
588 geometry_simplification (float): Simplification factor to use on
589 the geometries before returning them. The factor expresses
590 the tolerance in degrees from which the geometry may differ.
591 Topology is preserved. (Default: 0.0)
592 address_details (bool): Add detailed information about the places
593 that make up the address of the requested object. (Default: False)
594 linked_places (bool): Add detailed information about the places
595 that link to the result. (Default: False)
596 parented_places (bool): Add detailed information about all places
597 for which the requested object is a parent, i.e. all places for
598 which the object provides the address details.
599 Only POI places can have parents. (Default: False)
600 keywords (bool): Add detailed information about the search terms
604 source_table (enum): Data source of the place. See below for possible values.
605 category (tuple): A tuple of two strings with the primary OSM tag
607 centroid (Point): Point position of the place.
608 place_id (Optional[int]): Internal ID of the place. This ID may differ
609 for the same place between different installations.
610 osm_object (Optional[tuple]): OSM type and ID of the place, if available.
611 names (Optional[dict]): Dictionary of names of the place. Keys are
612 usually the corresponding OSM tag keys.
613 address (Optional[dict]): Dictionary of address parts directly
614 attributed to the place. Keys are usually the corresponding
615 OSM tag keys with the `addr:` prefix removed.
616 extratags (Optional[dict]): Dictionary of additional attributes for
617 the place. Usually OSM tag keys and values.
618 housenumber (Optional[str]): House number of the place, normalised
619 for lookup. To get the house number in its original spelling,
620 use `address['housenumber']`.
621 postcode (Optional[str]): Computed postcode for the place. To get
622 directly attributed postcodes, use `address['postcode']` instead.
623 wikipedia (Optional[str]): Reference to a wikipedia site for the place.
624 The string has the format <language code>:<wikipedia title>.
625 rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
626 rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
627 importance (Optional[float]): Relative importance of the place. This is a measure
628 how likely the place will be searched for.
629 country_code (Optional[str]): Country the feature is in as
630 ISO 3166-1 alpha-2 country code.
631 address_rows (Optional[AddressLines]): List of places that make up the
632 computed address. `None` when `address_details` parameter was False.
633 linked_rows (Optional[AddressLines]): List of places that link to the object.
634 `None` when `linked_places` parameter was False.
635 parented_rows (Optional[AddressLines]): List of direct children of the place.
636 `None` when `parented_places` parameter was False.
637 name_keywords (Optional[WordInfos]): List of search words for the name of
638 the place. `None` when `keywords` parameter is set to False.
639 address_keywords (Optional[WordInfos]): List of search word for the address of
640 the place. `None` when `keywords` parameter is set to False.
641 bbox (Bbox): Bounding box of the full geometry of the place.
642 If the place is a single point, then the size of the bounding
643 box is guessed according to the type of place.
644 geometry (dict): Dictionary containing the full geometry of the place
645 in the formats requested in the `geometry_output` parameter.
646 distance (Optional[float]): Distance in degree from the input point.
648 return self._loop.run_until_complete(self._async_api.reverse(coord, **params))
651 def search(self, query: str, **params: Any) -> SearchResults:
652 """ Find a place by free-text search. Also known as forward geocoding.
655 query: Free-form text query searching for a place.
658 max_results (int): Maximum number of results to return. The
659 actual number of results may be less. (Default: 10)
660 min_rank (int): Lowest permissible rank for the result.
661 For addressable places this is the minimum
662 [address rank](../customize/Ranking.md#address-rank). For all
663 other places the [search rank](../customize/Ranking.md#search-rank)
665 max_rank (int): Highest permissible rank for the result. See min_rank above.
666 layers (enum): Defines the kind of data to take into account.
667 See [layers section](Input-Parameter-Types.md#layers) for details.
668 (Default: addresses and POIs)
669 countries (list[str]): Restrict search to countries with the given
670 ISO 3166-1 alpha-2 country code. An empty list (the default)
671 disables this filter.
672 excluded (list[int]): A list of internal IDs of places to exclude
674 viewbox (Optional[Bbox]): Bounding box of an area to focus search on.
675 bounded_viewbox (bool): Consider the bounding box given in `viewbox`
676 as a filter and return only results within the bounding box.
677 near (Optional[Point]): Focus search around the given point and
678 return results ordered by distance to the given point.
679 near_radius (Optional[float]): Restrict results to results within
680 the given distance in degrees of `near` point. Ignored, when
682 categories (list[tuple]): Restrict search to places of the given
683 categories. The category is the main OSM tag assigned to each
684 place. An empty list (the default) disables this filter.
685 geometry_output (enum): Add the full geometry of the place to the result.
686 Multiple formats may be selected. Note that geometries can become
687 quite large. (Default: none)
688 geometry_simplification (float): Simplification factor to use on
689 the geometries before returning them. The factor expresses
690 the tolerance in degrees from which the geometry may differ.
691 Topology is preserved. (Default: 0.0)
692 address_details (bool): Add detailed information about the places
693 that make up the address of the requested object. (Default: False)
694 linked_places (bool): Add detailed information about the places
695 that link to the result. (Default: False)
696 parented_places (bool): Add detailed information about all places
697 for which the requested object is a parent, i.e. all places for
698 which the object provides the address details.
699 Only POI places can have parents. (Default: False)
700 keywords (bool): Add detailed information about the search terms
704 source_table (enum): Data source of the place. See below for possible values.
705 category (tuple): A tuple of two strings with the primary OSM tag
707 centroid (Point): Point position of the place.
708 place_id (Optional[int]): Internal ID of the place. This ID may differ
709 for the same place between different installations.
710 osm_object (Optional[tuple]): OSM type and ID of the place, if available.
711 names (Optional[dict]): Dictionary of names of the place. Keys are
712 usually the corresponding OSM tag keys.
713 address (Optional[dict]): Dictionary of address parts directly
714 attributed to the place. Keys are usually the corresponding
715 OSM tag keys with the `addr:` prefix removed.
716 extratags (Optional[dict]): Dictionary of additional attributes for
717 the place. Usually OSM tag keys and values.
718 housenumber (Optional[str]): House number of the place, normalised
719 for lookup. To get the house number in its original spelling,
720 use `address['housenumber']`.
721 postcode (Optional[str]): Computed postcode for the place. To get
722 directly attributed postcodes, use `address['postcode']` instead.
723 wikipedia (Optional[str]): Reference to a wikipedia site for the place.
724 The string has the format <language code>:<wikipedia title>.
725 rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
726 rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
727 importance (Optional[float]): Relative importance of the place. This is a measure
728 how likely the place will be searched for.
729 country_code (Optional[str]): Country the feature is in as
730 ISO 3166-1 alpha-2 country code.
731 address_rows (Optional[AddressLines]): List of places that make up the
732 computed address. `None` when `address_details` parameter was False.
733 linked_rows (Optional[AddressLines]): List of places that link to the object.
734 `None` when `linked_places` parameter was False.
735 parented_rows (Optional[AddressLines]): List of direct children of the place.
736 `None` when `parented_places` parameter was False.
737 name_keywords (Optional[WordInfos]): List of search words for the name of
738 the place. `None` when `keywords` parameter is set to False.
739 address_keywords (Optional[WordInfos]): List of search word for the address of
740 the place. `None` when `keywords` parameter is set to False.
741 bbox (Bbox): Bounding box of the full geometry of the place.
742 If the place is a single point, then the size of the bounding
743 box is guessed according to the type of place.
744 geometry (dict): Dictionary containing the full geometry of the place
745 in the formats requested in the `geometry_output` parameter.
747 return self._loop.run_until_complete(
748 self._async_api.search(query, **params))
751 # pylint: disable=too-many-arguments
752 def search_address(self, amenity: Optional[str] = None,
753 street: Optional[str] = None,
754 city: Optional[str] = None,
755 county: Optional[str] = None,
756 state: Optional[str] = None,
757 country: Optional[str] = None,
758 postalcode: Optional[str] = None,
759 **params: Any) -> SearchResults:
760 """ Find an address using structured search.
763 amenity: Name of a POI.
764 street: Street and optionally housenumber of the address. If the address
765 does not have a street, then the place the housenumber references to.
766 city: Postal city of the address.
767 county: County equivalent of the address. Does not exist in all
769 state: State or province of the address.
770 country: Country with its full name or its ISO 3166-1 alpha-2 country code.
771 Do not use together with the country_code filter.
772 postalcode: Post code or ZIP for the place.
775 max_results (int): Maximum number of results to return. The
776 actual number of results may be less. (Default: 10)
777 min_rank (int): Lowest permissible rank for the result.
778 For addressable places this is the minimum
779 [address rank](../customize/Ranking.md#address-rank). For all
780 other places the [search rank](../customize/Ranking.md#search-rank)
782 max_rank (int): Highest permissible rank for the result. See min_rank above.
783 layers (enum): Defines the kind of data to take into account.
784 See [layers section](Input-Parameter-Types.md#layers) for details.
785 (Default: addresses and POIs)
786 countries (list[str]): Restrict search to countries with the given
787 ISO 3166-1 alpha-2 country code. An empty list (the default)
788 disables this filter. Do not use, when the country parameter
790 excluded (list[int]): A list of internal IDs of places to exclude
792 viewbox (Optional[Bbox]): Bounding box of an area to focus search on.
793 bounded_viewbox (bool): Consider the bounding box given in `viewbox`
794 as a filter and return only results within the bounding box.
795 near (Optional[Point]): Focus search around the given point and
796 return results ordered by distance to the given point.
797 near_radius (Optional[float]): Restrict results to results within
798 the given distance in degrees of `near` point. Ignored, when
800 categories (list[tuple]): Restrict search to places of the given
801 categories. The category is the main OSM tag assigned to each
802 place. An empty list (the default) disables this filter.
803 geometry_output (enum): Add the full geometry of the place to the result.
804 Multiple formats may be selected. Note that geometries can become
805 quite large. (Default: none)
806 geometry_simplification (float): Simplification factor to use on
807 the geometries before returning them. The factor expresses
808 the tolerance in degrees from which the geometry may differ.
809 Topology is preserved. (Default: 0.0)
810 address_details (bool): Add detailed information about the places
811 that make up the address of the requested object. (Default: False)
812 linked_places (bool): Add detailed information about the places
813 that link to the result. (Default: False)
814 parented_places (bool): Add detailed information about all places
815 for which the requested object is a parent, i.e. all places for
816 which the object provides the address details.
817 Only POI places can have parents. (Default: False)
818 keywords (bool): Add detailed information about the search terms
822 source_table (enum): Data source of the place. See below for possible values.
823 category (tuple): A tuple of two strings with the primary OSM tag
825 centroid (Point): Point position of the place.
826 place_id (Optional[int]): Internal ID of the place. This ID may differ
827 for the same place between different installations.
828 osm_object (Optional[tuple]): OSM type and ID of the place, if available.
829 names (Optional[dict]): Dictionary of names of the place. Keys are
830 usually the corresponding OSM tag keys.
831 address (Optional[dict]): Dictionary of address parts directly
832 attributed to the place. Keys are usually the corresponding
833 OSM tag keys with the `addr:` prefix removed.
834 extratags (Optional[dict]): Dictionary of additional attributes for
835 the place. Usually OSM tag keys and values.
836 housenumber (Optional[str]): House number of the place, normalised
837 for lookup. To get the house number in its original spelling,
838 use `address['housenumber']`.
839 postcode (Optional[str]): Computed postcode for the place. To get
840 directly attributed postcodes, use `address['postcode']` instead.
841 wikipedia (Optional[str]): Reference to a wikipedia site for the place.
842 The string has the format <language code>:<wikipedia title>.
843 rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
844 rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
845 importance (Optional[float]): Relative importance of the place. This is a measure
846 how likely the place will be searched for.
847 country_code (Optional[str]): Country the feature is in as
848 ISO 3166-1 alpha-2 country code.
849 address_rows (Optional[AddressLines]): List of places that make up the
850 computed address. `None` when `address_details` parameter was False.
851 linked_rows (Optional[AddressLines]): List of places that link to the object.
852 `None` when `linked_places` parameter was False.
853 parented_rows (Optional[AddressLines]): List of direct children of the place.
854 `None` when `parented_places` parameter was False.
855 name_keywords (Optional[WordInfos]): List of search words for the name of
856 the place. `None` when `keywords` parameter is set to False.
857 address_keywords (Optional[WordInfos]): List of search word for the address of
858 the place. `None` when `keywords` parameter is set to False.
859 bbox (Bbox): Bounding box of the full geometry of the place.
860 If the place is a single point, then the size of the bounding
861 box is guessed according to the type of place.
862 geometry (dict): Dictionary containing the full geometry of the place
863 in the formats requested in the `geometry_output` parameter.
865 return self._loop.run_until_complete(
866 self._async_api.search_address(amenity, street, city, county,
867 state, country, postalcode, **params))
870 def search_category(self, categories: List[Tuple[str, str]],
871 near_query: Optional[str] = None,
872 **params: Any) -> SearchResults:
873 """ Find an object of a certain category near another place.
875 The near place may either be given as an unstructured search
876 query in itself or as a geographic area through the
877 viewbox or near parameters.
880 categories: Restrict search to places of the given
881 categories. The category is the main OSM tag assigned to each
883 near_query: Optional free-text query to define the are to
887 max_results (int): Maximum number of results to return. The
888 actual number of results may be less. (Default: 10)
889 min_rank (int): Lowest permissible rank for the result.
890 For addressable places this is the minimum
891 [address rank](../customize/Ranking.md#address-rank). For all
892 other places the [search rank](../customize/Ranking.md#search-rank)
894 max_rank (int): Highest permissible rank for the result. See min_rank above.
895 layers (enum): Defines the kind of data to take into account.
896 See [layers section](Input-Parameter-Types.md#layers) for details.
897 (Default: addresses and POIs)
898 countries (list[str]): Restrict search to countries with the given
899 ISO 3166-1 alpha-2 country code. An empty list (the default)
900 disables this filter.
901 excluded (list[int]): A list of internal IDs of places to exclude
903 viewbox (Optional[Bbox]): Bounding box of an area to focus search on.
904 bounded_viewbox (bool): Consider the bounding box given in `viewbox`
905 as a filter and return only results within the bounding box.
906 near (Optional[Point]): Focus search around the given point and
907 return results ordered by distance to the given point.
908 near_radius (Optional[float]): Restrict results to results within
909 the given distance in degrees of `near` point. Ignored, when
911 geometry_output (enum): Add the full geometry of the place to the result.
912 Multiple formats may be selected. Note that geometries can become
913 quite large. (Default: none)
914 geometry_simplification (float): Simplification factor to use on
915 the geometries before returning them. The factor expresses
916 the tolerance in degrees from which the geometry may differ.
917 Topology is preserved. (Default: 0.0)
918 address_details (bool): Add detailed information about the places
919 that make up the address of the requested object. (Default: False)
920 linked_places (bool): Add detailed information about the places
921 that link to the result. (Default: False)
922 parented_places (bool): Add detailed information about all places
923 for which the requested object is a parent, i.e. all places for
924 which the object provides the address details.
925 Only POI places can have parents. (Default: False)
926 keywords (bool): Add detailed information about the search terms
930 source_table (enum): Data source of the place. See below for possible values.
931 category (tuple): A tuple of two strings with the primary OSM tag
933 centroid (Point): Point position of the place.
934 place_id (Optional[int]): Internal ID of the place. This ID may differ
935 for the same place between different installations.
936 osm_object (Optional[tuple]): OSM type and ID of the place, if available.
937 names (Optional[dict]): Dictionary of names of the place. Keys are
938 usually the corresponding OSM tag keys.
939 address (Optional[dict]): Dictionary of address parts directly
940 attributed to the place. Keys are usually the corresponding
941 OSM tag keys with the `addr:` prefix removed.
942 extratags (Optional[dict]): Dictionary of additional attributes for
943 the place. Usually OSM tag keys and values.
944 housenumber (Optional[str]): House number of the place, normalised
945 for lookup. To get the house number in its original spelling,
946 use `address['housenumber']`.
947 postcode (Optional[str]): Computed postcode for the place. To get
948 directly attributed postcodes, use `address['postcode']` instead.
949 wikipedia (Optional[str]): Reference to a wikipedia site for the place.
950 The string has the format <language code>:<wikipedia title>.
951 rank_address (int): [Address rank](../customize/Ranking.md#address-rank).
952 rank_search (int): [Search rank](../customize/Ranking.md#search-rank).
953 importance (Optional[float]): Relative importance of the place. This is a measure
954 how likely the place will be searched for.
955 country_code (Optional[str]): Country the feature is in as
956 ISO 3166-1 alpha-2 country code.
957 address_rows (Optional[AddressLines]): List of places that make up the
958 computed address. `None` when `address_details` parameter was False.
959 linked_rows (Optional[AddressLines]): List of places that link to the object.
960 `None` when `linked_places` parameter was False.
961 parented_rows (Optional[AddressLines]): List of direct children of the place.
962 `None` when `parented_places` parameter was False.
963 name_keywords (Optional[WordInfos]): List of search words for the name of
964 the place. `None` when `keywords` parameter is set to False.
965 address_keywords (Optional[WordInfos]): List of search word for the address of
966 the place. `None` when `keywords` parameter is set to False.
967 bbox (Bbox): Bounding box of the full geometry of the place.
968 If the place is a single point, then the size of the bounding
969 box is guessed according to the type of place.
970 geometry (dict): Dictionary containing the full geometry of the place
971 in the formats requested in the `geometry_output` parameter.
973 return self._loop.run_until_complete(
974 self._async_api.search_category(categories, near_query, **params))