2 Functions for bringing auxiliary data in the database up-to-date.
6 from textwrap import dedent
8 from psycopg2.extras import execute_values
10 from nominatim.db.utils import execute_file
11 from nominatim.db.sql_preprocessor import SQLPreprocessor
12 from nominatim.version import NOMINATIM_VERSION
14 LOG = logging.getLogger()
17 def recompute_word_counts(dsn, sql_dir):
18 """ Compute the frequency of full-word search terms.
20 execute_file(dsn, sql_dir / 'words_from_search_name.sql')
23 def _add_address_level_rows_from_entry(rows, entry):
24 """ Converts a single entry from the JSON format for address rank
25 descriptions into a flat format suitable for inserting into a
26 PostgreSQL table and adds these lines to `rows`.
28 countries = entry.get('countries') or (None, )
29 for key, values in entry['tags'].items():
30 for value, ranks in values.items():
31 if isinstance(ranks, list):
32 rank_search, rank_address = ranks
34 rank_search = rank_address = ranks
37 for country in countries:
38 rows.append((country, key, value, rank_search, rank_address))
40 def load_address_levels(conn, table, levels):
41 """ Replace the `address_levels` table with the contents of `levels'.
43 A new table is created any previously existing table is dropped.
44 The table has the following columns:
45 country, class, type, rank_search, rank_address
49 _add_address_level_rows_from_entry(rows, entry)
51 with conn.cursor() as cur:
52 cur.execute('DROP TABLE IF EXISTS {}'.format(table))
54 cur.execute("""CREATE TABLE {} (country_code varchar(2),
58 rank_address SMALLINT)""".format(table))
60 execute_values(cur, "INSERT INTO {} VALUES %s".format(table), rows)
62 cur.execute('CREATE UNIQUE INDEX ON {} (country_code, class, type)'.format(table))
66 def load_address_levels_from_file(conn, config_file):
67 """ Replace the `address_levels` table with the contents of the config
70 with config_file.open('r') as fdesc:
71 load_address_levels(conn, 'address_levels', json.load(fdesc))
74 def create_functions(conn, config, enable_diff_updates=True, enable_debug=False):
75 """ (Re)create the PL/pgSQL functions.
77 sql = SQLPreprocessor(conn, config)
79 sql.run_sql_file(conn, 'functions.sql',
80 disable_diff_updates=not enable_diff_updates,
95 # constants needed by PHP scripts: PHP name, config name, type
97 ('Database_DSN', 'DATABASE_DSN', str),
98 ('Default_Language', 'DEFAULT_LANGUAGE', str),
99 ('Log_DB', 'LOG_DB', bool),
100 ('Log_File', 'LOG_FILE', str),
101 ('NoAccessControl', 'CORS_NOACCESSCONTROL', bool),
102 ('Places_Max_ID_count', 'LOOKUP_MAX_COUNT', int),
103 ('PolygonOutput_MaximumTypes', 'POLYGON_OUTPUT_MAX_TYPES', int),
104 ('Search_BatchMode', 'SEARCH_BATCH_MODE', bool),
105 ('Search_NameOnlySearchFrequencyThreshold', 'SEARCH_NAME_ONLY_THRESHOLD', str),
106 ('Use_US_Tiger_Data', 'USE_US_TIGER_DATA', bool),
107 ('MapIcon_URL', 'MAPICON_URL', str),
111 def import_wikipedia_articles(dsn, data_path, ignore_errors=False):
112 """ Replaces the wikipedia importance tables with new data.
113 The import is run in a single transaction so that the new data
114 is replace seemlessly.
116 Returns 0 if all was well and 1 if the importance file could not
117 be found. Throws an exception if there was an error reading the file.
119 datafile = data_path / 'wikimedia-importance.sql.gz'
121 if not datafile.exists():
125 DROP TABLE IF EXISTS "wikipedia_article";
126 DROP TABLE IF EXISTS "wikipedia_redirect"
129 execute_file(dsn, datafile, ignore_errors=ignore_errors,
130 pre_code=pre_code, post_code=post_code)
135 def recompute_importance(conn):
136 """ Recompute wikipedia links and importance for all entries in placex.
137 This is a long-running operations that must not be executed in
138 parallel with updates.
140 with conn.cursor() as cur:
141 cur.execute('ALTER TABLE placex DISABLE TRIGGER ALL')
143 UPDATE placex SET (wikipedia, importance) =
144 (SELECT wikipedia, importance
145 FROM compute_importance(extratags, country_code, osm_type, osm_id))
148 UPDATE placex s SET wikipedia = d.wikipedia, importance = d.importance
150 WHERE s.place_id = d.linked_place_id and d.wikipedia is not null
151 and (s.wikipedia is null or s.importance < d.importance);
154 cur.execute('ALTER TABLE placex ENABLE TRIGGER ALL')
158 def setup_website(basedir, config, conn):
159 """ Create the website script stubs.
161 if not basedir.exists():
162 LOG.info('Creating website directory.')
165 template = dedent("""\
168 @define('CONST_Debug', $_GET['debug'] ?? false);
169 @define('CONST_LibDir', '{0}');
170 @define('CONST_TokenizerDir', '{2}');
171 @define('CONST_NominatimVersion', '{1[0]}.{1[1]}.{1[2]}-{1[3]}');
173 """.format(config.lib_dir.php, NOMINATIM_VERSION,
174 config.project_dir / 'tokenizer'))
176 for php_name, conf_name, var_type in PHP_CONST_DEFS:
178 varout = 'true' if config.get_bool(conf_name) else 'false'
179 elif var_type == int:
180 varout = getattr(config, conf_name)
181 elif not getattr(config, conf_name):
184 varout = "'{}'".format(getattr(config, conf_name).replace("'", "\\'"))
186 template += "@define('CONST_{}', {});\n".format(php_name, varout)
188 template += "\nrequire_once('{}/website/{{}}');\n".format(config.lib_dir.php)
190 search_name_table_exists = bool(conn and conn.table_exists('search_name'))
192 for script in WEBSITE_SCRIPTS:
193 if not search_name_table_exists and script == 'search.php':
194 (basedir / script).write_text(template.format('reverse-only-search.php'), 'utf-8')
196 (basedir / script).write_text(template.format(script), 'utf-8')