+# 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 database migration to newer software versions.
"""
+from typing import List, Tuple, Callable, Any
import logging
-from ..db import properties
-from ..db.connection import connect
-from ..version import NOMINATIM_VERSION
-from . import refresh, database_import
-from ..errors import UsageError
+from psycopg2 import sql as pysql
+
+from nominatim.config import Configuration
+from nominatim.db import properties
+from nominatim.db.connection import connect, Connection
+from nominatim.version import NOMINATIM_VERSION, version_str
+from nominatim.tools import refresh
+from nominatim.tokenizer import factory as tokenizer_factory
+from nominatim.errors import UsageError
LOG = logging.getLogger()
-_MIGRATION_FUNCTIONS = []
+VersionTuple = Tuple[int, int, int, int]
+
+_MIGRATION_FUNCTIONS : List[Tuple[VersionTuple, Callable[..., None]]] = []
-def migrate(config, paths):
+def migrate(config: Configuration, paths: Any) -> int:
""" Check for the current database version and execute migrations,
if necesssary.
"""
if db_version_str is not None:
parts = db_version_str.split('.')
- db_version = tuple([int(x) for x in parts[:2] + parts[2].split('-')])
+ db_version = tuple(int(x) for x in parts[:2] + parts[2].split('-'))
if db_version == NOMINATIM_VERSION:
LOG.warning("Database already at latest version (%s)", db_version_str)
has_run_migration = False
for version, func in _MIGRATION_FUNCTIONS:
if db_version <= version:
- LOG.warning("Runnning: %s (%s)", func.__doc__.split('\n', 1)[0],
- '{0[0]}.{0[1]}.{0[2]}-{0[3]}'.format(version))
+ title = func.__doc__ or ''
+ LOG.warning("Running: %s (%s)", title.split('\n', 1)[0],
+ version_str(version))
kwargs = dict(conn=conn, config=config, paths=paths)
func(**kwargs)
+ conn.commit()
has_run_migration = True
if has_run_migration:
LOG.warning('Updating SQL functions.')
- refresh.create_functions(conn, config, paths.sqllib_dir)
+ refresh.create_functions(conn, config)
+ tokenizer = tokenizer_factory.get_tokenizer_for_db(config)
+ tokenizer.update_sql_functions(config)
- properties.set_property(conn, 'database_version',
- '{0[0]}.{0[1]}.{0[2]}-{0[3]}'.format(NOMINATIM_VERSION))
+ properties.set_property(conn, 'database_version', version_str())
conn.commit()
return 0
-def _guess_version(conn):
+def _guess_version(conn: Connection) -> VersionTuple:
""" Guess a database version when there is no property table yet.
Only migrations for 3.6 and later are supported, so bail out
when the version seems older.
-def _migration(major, minor, patch=0, dbpatch=0):
+def _migration(major: int, minor: int, patch: int = 0,
+ dbpatch: int = 0) -> Callable[[Callable[..., None]], Callable[..., None]]:
""" Decorator for a single migration step. The parameters describe the
version after which the migration is applicable, i.e before changing
from the given version to the next, the migration is required.
process, so the migration functions may leave a temporary state behind
there.
"""
- def decorator(func):
+ def decorator(func: Callable[..., None]) -> Callable[..., None]:
_MIGRATION_FUNCTIONS.append(((major, minor, patch, dbpatch), func))
+ return func
return decorator
@_migration(3, 5, 0, 99)
-def import_status_timestamp_change(conn, **_):
+def import_status_timestamp_change(conn: Connection, **_: Any) -> None:
""" Add timezone to timestamp in status table.
The import_status table has been changed to include timezone information
@_migration(3, 5, 0, 99)
-def install_database_module_in_project_directory(conn, config, paths, **_):
- """ Install database module in project directory.
-
- The database module needs to be present in the project directory
- since those were introduced.
- """
- database_import.install_module(paths.module_dir, paths.project_dir,
- config.DATABASE_MODULE_PATH, conn=conn)
-
-
-@_migration(3, 5, 0, 99)
-def add_nominatim_property_table(conn, config, **_):
+def add_nominatim_property_table(conn: Connection, config: Configuration, **_: Any) -> None:
""" Add nominatim_property table.
"""
if not conn.table_exists('nominatim_properties'):
with conn.cursor() as cur:
- cur.execute("""CREATE TABLE nominatim_properties (
- property TEXT,
- value TEXT);
- GRANT SELECT ON TABLE nominatim_properties TO "{}";
- """.format(config.DATABASE_WEBUSER))
+ cur.execute(pysql.SQL("""CREATE TABLE nominatim_properties (
+ property TEXT,
+ value TEXT);
+ GRANT SELECT ON TABLE nominatim_properties TO {};
+ """).format(pysql.Identifier(config.DATABASE_WEBUSER)))
@_migration(3, 6, 0, 0)
-def change_housenumber_transliteration(conn, **_):
+def change_housenumber_transliteration(conn: Connection, **_: Any) -> None:
""" Transliterate housenumbers.
The database schema switched from saving raw housenumbers in
placex.housenumber to saving transliterated ones.
+
+ Note: the function create_housenumber_id() has been dropped in later
+ versions.
"""
with conn.cursor() as cur:
cur.execute("""CREATE OR REPLACE FUNCTION create_housenumber_id(housenumber TEXT)
BEGIN
SELECT array_to_string(array_agg(trans), ';')
INTO normtext
- FROM (SELECT lookup_word as trans, getorcreate_housenumber_id(lookup_word)
+ FROM (SELECT lookup_word as trans,
+ getorcreate_housenumber_id(lookup_word)
FROM (SELECT make_standard_name(h) as lookup_word
FROM regexp_split_to_table(housenumber, '[,;]') h) x) y;
return normtext;
cur.execute("""UPDATE placex
SET housenumber = create_housenumber_id(housenumber)
WHERE housenumber is not null""")
+
+
+@_migration(3, 7, 0, 0)
+def switch_placenode_geometry_index(conn: Connection, **_: Any) -> None:
+ """ Replace idx_placex_geometry_reverse_placeNode index.
+
+ Make the index slightly more permissive, so that it can also be used
+ when matching up boundaries and place nodes. It makes the index
+ idx_placex_adminname index unnecessary.
+ """
+ with conn.cursor() as cur:
+ cur.execute(""" CREATE INDEX IF NOT EXISTS idx_placex_geometry_placenode ON placex
+ USING GIST (geometry)
+ WHERE osm_type = 'N' and rank_search < 26
+ and class = 'place' and type != 'postcode'
+ and linked_place_id is null""")
+ cur.execute(""" DROP INDEX IF EXISTS idx_placex_adminname """)
+
+
+@_migration(3, 7, 0, 1)
+def install_legacy_tokenizer(conn: Connection, config: Configuration, **_: Any) -> None:
+ """ Setup legacy tokenizer.
+
+ If no other tokenizer has been configured yet, then create the
+ configuration for the backwards-compatible legacy tokenizer
+ """
+ if properties.get_property(conn, 'tokenizer') is None:
+ with conn.cursor() as cur:
+ for table in ('placex', 'location_property_osmline'):
+ has_column = cur.scalar("""SELECT count(*) FROM information_schema.columns
+ WHERE table_name = %s
+ and column_name = 'token_info'""",
+ (table, ))
+ if has_column == 0:
+ cur.execute(pysql.SQL('ALTER TABLE {} ADD COLUMN token_info JSONB')
+ .format(pysql.Identifier(table)))
+ tokenizer = tokenizer_factory.create_tokenizer(config, init_db=False,
+ module_name='legacy')
+
+ tokenizer.migrate_database(config) # type: ignore[attr-defined]
+
+
+@_migration(4, 0, 99, 0)
+def create_tiger_housenumber_index(conn: Connection, **_: Any) -> None:
+ """ Create idx_location_property_tiger_parent_place_id with included
+ house number.
+
+ The inclusion is needed for efficient lookup of housenumbers in
+ full address searches.
+ """
+ if conn.server_version_tuple() >= (11, 0, 0):
+ with conn.cursor() as cur:
+ cur.execute(""" CREATE INDEX IF NOT EXISTS
+ idx_location_property_tiger_housenumber_migrated
+ ON location_property_tiger
+ USING btree(parent_place_id)
+ INCLUDE (startnumber, endnumber) """)
+
+
+@_migration(4, 0, 99, 1)
+def create_interpolation_index_on_place(conn: Connection, **_: Any) -> None:
+ """ Create idx_place_interpolations for lookup of interpolation lines
+ on updates.
+ """
+ with conn.cursor() as cur:
+ cur.execute("""CREATE INDEX IF NOT EXISTS idx_place_interpolations
+ ON place USING gist(geometry)
+ WHERE osm_type = 'W' and address ? 'interpolation'""")
+
+
+@_migration(4, 0, 99, 2)
+def add_step_column_for_interpolation(conn: Connection, **_: Any) -> None:
+ """ Add a new column 'step' to the interpolations table.
+
+ Also converts the data into the stricter format which requires that
+ startnumbers comply with the odd/even requirements.
+ """
+ if conn.table_has_column('location_property_osmline', 'step'):
+ return
+
+ with conn.cursor() as cur:
+ # Mark invalid all interpolations with no intermediate numbers.
+ cur.execute("""UPDATE location_property_osmline SET startnumber = null
+ WHERE endnumber - startnumber <= 1 """)
+ # Align the start numbers where odd/even does not match.
+ cur.execute("""UPDATE location_property_osmline
+ SET startnumber = startnumber + 1,
+ linegeo = ST_LineSubString(linegeo,
+ 1.0 / (endnumber - startnumber)::float,
+ 1)
+ WHERE (interpolationtype = 'odd' and startnumber % 2 = 0)
+ or (interpolationtype = 'even' and startnumber % 2 = 1)
+ """)
+ # Mark invalid odd/even interpolations with no intermediate numbers.
+ cur.execute("""UPDATE location_property_osmline SET startnumber = null
+ WHERE interpolationtype in ('odd', 'even')
+ and endnumber - startnumber = 2""")
+ # Finally add the new column and populate it.
+ cur.execute("ALTER TABLE location_property_osmline ADD COLUMN step SMALLINT")
+ cur.execute("""UPDATE location_property_osmline
+ SET step = CASE WHEN interpolationtype = 'all'
+ THEN 1 ELSE 2 END
+ """)
+
+
+@_migration(4, 0, 99, 3)
+def add_step_column_for_tiger(conn: Connection, **_: Any) -> None:
+ """ Add a new column 'step' to the tiger data table.
+ """
+ if conn.table_has_column('location_property_tiger', 'step'):
+ return
+
+ with conn.cursor() as cur:
+ cur.execute("ALTER TABLE location_property_tiger ADD COLUMN step SMALLINT")
+ cur.execute("""UPDATE location_property_tiger
+ SET step = CASE WHEN interpolationtype = 'all'
+ THEN 1 ELSE 2 END
+ """)
+
+
+@_migration(4, 0, 99, 4)
+def add_derived_name_column_for_country_names(conn: Connection, **_: Any) -> None:
+ """ Add a new column 'derived_name' which in the future takes the
+ country names as imported from OSM data.
+ """
+ if not conn.table_has_column('country_name', 'derived_name'):
+ with conn.cursor() as cur:
+ cur.execute("ALTER TABLE country_name ADD COLUMN derived_name public.HSTORE")
+
+
+@_migration(4, 0, 99, 5)
+def mark_internal_country_names(conn: Connection, config: Configuration, **_: Any) -> None:
+ """ Names from the country table should be marked as internal to prevent
+ them from being deleted. Only necessary for ICU tokenizer.
+ """
+ import psycopg2.extras # pylint: disable=import-outside-toplevel
+
+ tokenizer = tokenizer_factory.get_tokenizer_for_db(config)
+ with tokenizer.name_analyzer() as analyzer:
+ with conn.cursor() as cur:
+ psycopg2.extras.register_hstore(cur)
+ cur.execute("SELECT country_code, name FROM country_name")
+
+ for country_code, names in cur:
+ if not names:
+ names = {}
+ names['countrycode'] = country_code
+ analyzer.add_country_names(country_code, names)
+
+
+@_migration(4, 1, 99, 0)
+def add_place_deletion_todo_table(conn: Connection, **_: Any) -> None:
+ """ Add helper table for deleting data on updates.
+
+ The table is only necessary when updates are possible, i.e.
+ the database is not in freeze mode.
+ """
+ if conn.table_exists('place'):
+ with conn.cursor() as cur:
+ cur.execute("""CREATE TABLE IF NOT EXISTS place_to_be_deleted (
+ osm_type CHAR(1),
+ osm_id BIGINT,
+ class TEXT,
+ type TEXT,
+ deferred BOOLEAN)""")
projects / nominatim.git / blobdiff