Merge remote-tracking branch 'upstream/master'

[nominatim.git] / nominatim / tools / country_info.py

diff --git a/nominatim/tools/country_info.py b/nominatim/tools/country_info.py
index 897ac22031c32267a1321da3b54efb23348d503e..f6a6293f46e46573c88d5e288c653b47f66a1cbc 100644 (file)
--- a/nominatim/tools/country_info.py
+++ b/nominatim/tools/country_info.py
@@ -1,49 +1,80 @@
+# 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
-import yaml
 
 from nominatim.db import utils as db_utils
 from nominatim.db.connection import connect
 
+
 class _CountryInfo:
     """ Caches country-specific properties from the configuration file.
     """
 
     def __init__(self):
         self._info = {}
+        self._key_prefix = 'name'
 
-    def load(self, configfile):
+    def load(self, config):
         """ Load the country properties from the configuration files,
             if they are not loaded yet.
         """
         if not self._info:
-            self._info = yaml.safe_load(configfile.read_text(encoding='utf-8'))
+            self._info = config.load_sub_configuration('country_settings.yaml')
+            # Convert languages into a list for simpler handling.
+            for prop in self._info.values():
+                if 'languages' not in prop:
+                    prop['languages'] = []
+                elif not isinstance(prop['languages'], list):
+                    prop['languages'] = [x.strip()
+                                         for x in prop['languages'].split(',')]
+                if 'names' not in prop or prop['names'] is None:
+                    prop['names'] = {self._key_prefix: {}}
 
     def items(self):
         """ Return tuples of (country_code, property dict) as iterable.
         """
         return self._info.items()
 
+    def key_prefix(self):
+        """ Return the prefix that will be attached to the keys of the country
+            names values when storing them in the database
+        """
+        return self._key_prefix
+
 
 _COUNTRY_INFO = _CountryInfo()
 
-def setup_country_config(configfile):
+
+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(configfile)
+    _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')
 
+    def add_prefix_to_keys(names, prefix):
+        return {prefix+':'+k: v for k, v in names.items()}
+
     params = []
     for ccode, props in _COUNTRY_INFO.items():
         if ccode is not None and props is not None:
@@ -51,19 +82,26 @@ def setup_country_tables(dsn, sql_dir, ignore_partitions=False):
                 partition = 0
             else:
                 partition = props.get('partition')
-            if ',' in (props.get('languages', ',') or ','):
-                lang = None
-            else:
-                lang = props['languages']
-            params.append((ccode, partition, lang))
-
+            lang = props['languages'][0] if len(
+                props['languages']) == 1 else None
+            name = add_prefix_to_keys(props.get('names').get(
+                _COUNTRY_INFO.key_prefix()), _COUNTRY_INFO.key_prefix())
+            params.append((ccode, name, 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(
-                """ UPDATE country_name
-                    SET partition = part, country_default_language_code = lang
-                    FROM (VALUES %s) AS v (cc, part, lang)
-                    WHERE country_code = v.cc""", params)
+                """ INSERT INTO public.country_name
+                    (country_code, name, country_default_language_code, partition) VALUES %s
+                """, params)
         conn.commit()
 
 
@@ -77,8 +115,9 @@ def create_country_names(conn, tokenizer, languages=None):
         languages = languages.split(',')
 
     def _include_key(key):
-        return key == 'name' or \
-               (key.startswith('name:') and (not languages or key[5:] in languages))
+        return key == _COUNTRY_INFO.key_prefix() or \
+            (key.startswith(_COUNTRY_INFO.key_prefix()+':') and
+             (not languages or key[len(_COUNTRY_INFO.key_prefix())+1:] in languages))
 
     with conn.cursor() as cur:
         psycopg2.extras.register_hstore(cur)
@@ -95,7 +134,8 @@ def create_country_names(conn, tokenizer, languages=None):
 
                 # country names (only in languages as provided)
                 if name:
-                    names.update(((k, v) for k, v in name.items() if _include_key(k)))
+                    names.update(((k, v)
+                                  for k, v in name.items() if _include_key(k)))
 
                 analyzer.add_country_names(code, names)