+# 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.
"""
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)
'{0[0]}.{0[1]}.{0[2]}-{0[3]}'.format(version))
kwargs = dict(conn=conn, config=config, paths=paths)
func(**kwargs)
+ conn.commit()
has_run_migration = True
if has_run_migration:
"""
def decorator(func):
_MIGRATION_FUNCTIONS.append(((major, minor, patch, dbpatch), func))
+ return func
return decorator
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;
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('ALTER TABLE {} ADD COLUMN token_info JSONB'.format(table))
tokenizer = tokenizer_factory.create_tokenizer(config, init_db=False,
module_name='legacy')
tokenizer.migrate_database(config)
+
+
+@_migration(4, 0, 99, 0)
+def create_tiger_housenumber_index(conn, **_):
+ """ 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, **_):
+ """ 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, **_):
+ """ Add a new column 'step' to the interpolations table.
+
+ Also convers the data into the stricter format which requires that
+ startnumbers comply with the odd/even requirements.
+ """
+ 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, **_):
+ """ Add a new column 'step' to the tiger data table.
+ """
+ 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
+ """)
projects / nominatim.git / blobdiff