+# SPDX-License-Identifier: GPL-2.0-only
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.
"""
Functions for importing and managing static country information.
"""
+import psycopg2.extras
+
from nominatim.db import utils as db_utils
from nominatim.db.connection import connect
+from nominatim.errors import UsageError
+
+def _flatten_name_list(names):
+ if names is None:
+ return {}
+
+ if not isinstance(names, dict):
+ raise UsageError("Expected key-value list for names in country_settings.py")
+
+ flat = {}
+ for prefix, remain in names.items():
+ if isinstance(remain, str):
+ flat[prefix] = remain
+ elif not isinstance(remain, dict):
+ raise UsageError("Entries in names must be key-value lists.")
+ else:
+ for suffix, name in remain.items():
+ if suffix == 'default':
+ flat[prefix] = name
+ else:
+ flat[f'{prefix}:{suffix}'] = name
+
+ return flat
+
+
+
+class _CountryInfo:
+ """ Caches country-specific properties from the configuration file.
+ """
+
+ def __init__(self):
+ self._info = {}
+
+
+ def load(self, config):
+ """ Load the country properties from the configuration files,
+ if they are not loaded yet.
+ """
+ if not self._info:
+ self._info = config.load_sub_configuration('country_settings.yaml')
+ for prop in self._info.values():
+ # Convert languages into a list for simpler handling.
+ if 'languages' not in prop:
+ prop['languages'] = []
+ elif not isinstance(prop['languages'], list):
+ prop['languages'] = [x.strip()
+ for x in prop['languages'].split(',')]
+ prop['names'] = _flatten_name_list(prop.get('names'))
+
+
+ def items(self):
+ """ Return tuples of (country_code, property dict) as iterable.
+ """
+ return self._info.items()
+
+ def get(self, country_code):
+ """ Get country information for the country with the given country code.
+ """
+ return self._info.get(country_code, {})
+
+
+
+_COUNTRY_INFO = _CountryInfo()
+
+
+def setup_country_config(config):
+ """ Load country properties from the configuration file.
+ Needs to be called before using any other functions in this
+ file.
+ """
+ _COUNTRY_INFO.load(config)
+
+
+def iterate():
+ """ Iterate over country code and properties.
+ """
+ return _COUNTRY_INFO.items()
+
def setup_country_tables(dsn, sql_dir, ignore_partitions=False):
""" Create and populate the tables with basic static data that provides
the background for geocoding. Data is assumed to not yet exist.
"""
- db_utils.execute_file(dsn, sql_dir / 'country_name.sql')
db_utils.execute_file(dsn, sql_dir / 'country_osm_grid.sql.gz')
- if ignore_partitions:
- with connect(dsn) as conn:
- with conn.cursor() as cur:
- cur.execute('UPDATE country_name SET partition = 0')
- conn.commit()
+ params = []
+ for ccode, props in _COUNTRY_INFO.items():
+ if ccode is not None and props is not None:
+ if ignore_partitions:
+ partition = 0
+ else:
+ partition = props.get('partition')
+ lang = props['languages'][0] if len(
+ props['languages']) == 1 else None
+
+ params.append((ccode, props['names'], lang, partition))
+ with connect(dsn) as conn:
+ with conn.cursor() as cur:
+ psycopg2.extras.register_hstore(cur)
+ cur.execute(
+ """ CREATE TABLE public.country_name (
+ country_code character varying(2),
+ name public.hstore,
+ derived_name public.hstore,
+ country_default_language_code text,
+ partition integer
+ ); """)
+ cur.execute_values(
+ """ INSERT INTO public.country_name
+ (country_code, name, country_default_language_code, partition) VALUES %s
+ """, params)
+ conn.commit()
+
+
+def create_country_names(conn, tokenizer, languages=None):
+ """ Add default country names to search index. `languages` is a comma-
+ separated list of language codes as used in OSM. If `languages` is not
+ empty then only name translations for the given languages are added
+ to the index.
+ """
+ if languages:
+ languages = languages.split(',')
+
+ def _include_key(key):
+ return ':' not in key or not languages or \
+ key[key.index(':') + 1:] in languages
+
+ with conn.cursor() as cur:
+ psycopg2.extras.register_hstore(cur)
+ cur.execute("""SELECT country_code, name FROM country_name
+ WHERE country_code is not null""")
+
+ with tokenizer.name_analyzer() as analyzer:
+ for code, name in cur:
+ names = {'countrycode': code}
+
+ # country names (only in languages as provided)
+ if name:
+ names.update({k : v for k, v in name.items() if _include_key(k)})
+
+ analyzer.add_country_names(code, names)
+
+ conn.commit()
projects / nominatim.git / blobdiff