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()
16 def update_postcodes(dsn, sql_dir):
17 """ Recalculate postcode centroids and add, remove and update entries in the
18 location_postcode table. `conn` is an opne connection to the database.
20 execute_file(dsn, sql_dir / 'update-postcodes.sql')
23 def recompute_word_counts(dsn, sql_dir):
24 """ Compute the frequency of full-word search terms.
26 execute_file(dsn, sql_dir / 'words_from_search_name.sql')
29 def _add_address_level_rows_from_entry(rows, entry):
30 """ Converts a single entry from the JSON format for address rank
31 descriptions into a flat format suitable for inserting into a
32 PostgreSQL table and adds these lines to `rows`.
34 countries = entry.get('countries') or (None, )
35 for key, values in entry['tags'].items():
36 for value, ranks in values.items():
37 if isinstance(ranks, list):
38 rank_search, rank_address = ranks
40 rank_search = rank_address = ranks
43 for country in countries:
44 rows.append((country, key, value, rank_search, rank_address))
46 def load_address_levels(conn, table, levels):
47 """ Replace the `address_levels` table with the contents of `levels'.
49 A new table is created any previously existing table is dropped.
50 The table has the following columns:
51 country, class, type, rank_search, rank_address
55 _add_address_level_rows_from_entry(rows, entry)
57 with conn.cursor() as cur:
58 cur.execute('DROP TABLE IF EXISTS {}'.format(table))
60 cur.execute("""CREATE TABLE {} (country_code varchar(2),
64 rank_address SMALLINT)""".format(table))
66 execute_values(cur, "INSERT INTO {} VALUES %s".format(table), rows)
68 cur.execute('CREATE UNIQUE INDEX ON {} (country_code, class, type)'.format(table))
72 def load_address_levels_from_file(conn, config_file):
73 """ Replace the `address_levels` table with the contents of the config
76 with config_file.open('r') as fdesc:
77 load_address_levels(conn, 'address_levels', json.load(fdesc))
80 def create_functions(conn, config, enable_diff_updates=True, enable_debug=False):
81 """ (Re)create the PL/pgSQL functions.
83 sql = SQLPreprocessor(conn, config)
85 sql.run_sql_file(conn, 'functions.sql',
86 disable_diff_updates=not enable_diff_updates,
101 # constants needed by PHP scripts: PHP name, config name, type
103 ('Database_DSN', 'DATABASE_DSN', str),
104 ('Default_Language', 'DEFAULT_LANGUAGE', str),
105 ('Log_DB', 'LOG_DB', bool),
106 ('Log_File', 'LOG_FILE', str),
107 ('Max_Word_Frequency', 'MAX_WORD_FREQUENCY', int),
108 ('NoAccessControl', 'CORS_NOACCESSCONTROL', bool),
109 ('Places_Max_ID_count', 'LOOKUP_MAX_COUNT', int),
110 ('PolygonOutput_MaximumTypes', 'POLYGON_OUTPUT_MAX_TYPES', int),
111 ('Search_BatchMode', 'SEARCH_BATCH_MODE', bool),
112 ('Search_NameOnlySearchFrequencyThreshold', 'SEARCH_NAME_ONLY_THRESHOLD', str),
113 ('Term_Normalization_Rules', 'TERM_NORMALIZATION', str),
114 ('Use_US_Tiger_Data', 'USE_US_TIGER_DATA', bool),
115 ('MapIcon_URL', 'MAPICON_URL', str),
119 def import_wikipedia_articles(dsn, data_path, ignore_errors=False):
120 """ Replaces the wikipedia importance tables with new data.
121 The import is run in a single transaction so that the new data
122 is replace seemlessly.
124 Returns 0 if all was well and 1 if the importance file could not
125 be found. Throws an exception if there was an error reading the file.
127 datafile = data_path / 'wikimedia-importance.sql.gz'
129 if not datafile.exists():
133 DROP TABLE IF EXISTS "wikipedia_article";
134 DROP TABLE IF EXISTS "wikipedia_redirect"
137 execute_file(dsn, datafile, ignore_errors=ignore_errors,
138 pre_code=pre_code, post_code=post_code)
143 def recompute_importance(conn):
144 """ Recompute wikipedia links and importance for all entries in placex.
145 This is a long-running operations that must not be executed in
146 parallel with updates.
148 with conn.cursor() as cur:
149 cur.execute('ALTER TABLE placex DISABLE TRIGGER ALL')
151 UPDATE placex SET (wikipedia, importance) =
152 (SELECT wikipedia, importance
153 FROM compute_importance(extratags, country_code, osm_type, osm_id))
156 UPDATE placex s SET wikipedia = d.wikipedia, importance = d.importance
158 WHERE s.place_id = d.linked_place_id and d.wikipedia is not null
159 and (s.wikipedia is null or s.importance < d.importance);
162 cur.execute('ALTER TABLE placex ENABLE TRIGGER ALL')
166 def setup_website(basedir, config):
167 """ Create the website script stubs.
169 if not basedir.exists():
170 LOG.info('Creating website directory.')
173 template = dedent("""\
176 @define('CONST_Debug', $_GET['debug'] ?? false);
177 @define('CONST_LibDir', '{0}');
178 @define('CONST_NominatimVersion', '{1[0]}.{1[1]}.{1[2]}-{1[3]}');
180 """.format(config.lib_dir.php, NOMINATIM_VERSION))
182 for php_name, conf_name, var_type in PHP_CONST_DEFS:
184 varout = 'true' if config.get_bool(conf_name) else 'false'
185 elif var_type == int:
186 varout = getattr(config, conf_name)
187 elif not getattr(config, conf_name):
190 varout = "'{}'".format(getattr(config, conf_name).replace("'", "\\'"))
192 template += "@define('CONST_{}', {});\n".format(php_name, varout)
194 template += "\nrequire_once('{}/website/{{}}');\n".format(config.lib_dir.php)
196 for script in WEBSITE_SCRIPTS:
197 (basedir / script).write_text(template.format(script), 'utf-8')