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

diff --git a/nominatim/tools/migration.py b/nominatim/tools/migration.py
index 756a1d3a903326a8540dcbee9ee3b545bb11d843..28a14455066f689fad6b93a05a78ddd8c0014fe0 100644 (file)
--- a/nominatim/tools/migration.py
+++ b/nominatim/tools/migration.py
@@ -1,13 +1,22 @@
+# 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.
 """
 import logging
 
 """
 Functions for database migration to newer software versions.
 """
 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.db import properties
+from nominatim.db.connection import connect
+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()
 
 
 LOG = logging.getLogger()
 


@@ -25,7 +34,7 @@ def migrate(config, paths):
 
         if db_version_str is not None:
             parts = db_version_str.split('.')
 
         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)
 
             if db_version == NOMINATIM_VERSION:
                 LOG.warning("Database already at latest version (%s)", db_version_str)


@@ -40,17 +49,19 @@ def migrate(config, paths):
         for version, func in _MIGRATION_FUNCTIONS:
             if db_version <= version:
                 LOG.warning("Runnning: %s (%s)", func.__doc__.split('\n', 1)[0],
         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))
+                            version_str(version))

                 kwargs = dict(conn=conn, config=config, paths=paths)
                 func(**kwargs)
                 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.')
                 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()
 
 
         conn.commit()
 


@@ -92,6 +103,7 @@ def _migration(major, minor, patch=0, dbpatch=0):
     """
     def decorator(func):
         _MIGRATION_FUNCTIONS.append(((major, minor, patch, dbpatch), func))
     """
     def decorator(func):
         _MIGRATION_FUNCTIONS.append(((major, minor, patch, dbpatch), func))

+        return func

 
     return decorator
 
 
     return decorator
 


@@ -109,24 +121,191 @@ def import_status_timestamp_change(conn, **_):
 
 
 @_migration(3, 5, 0, 99)
 
 
 @_migration(3, 5, 0, 99)

-def install_database_module_in_project_directory(conn, config, paths, **_):
-    """ Install database module in project directory.
+def add_nominatim_property_table(conn, config, **_):
+    """ Add nominatim_property table.
+    """
+    if not conn.table_exists('nominatim_properties'):
+        with conn.cursor() as cur:
+            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, **_):
+    """ Transliterate housenumbers.

 
 

-        The database module needs to be present in the project directory
-        since those were introduced.
+        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.

     """
     """

-    database_import.install_module(paths.module_dir, paths.project_dir,
-                                   config.DATABASE_MODULE_PATH, conn=conn)
+    with conn.cursor() as cur:
+        cur.execute("""CREATE OR REPLACE FUNCTION create_housenumber_id(housenumber TEXT)
+                       RETURNS TEXT AS $$
+                       DECLARE
+                         normtext TEXT;
+                       BEGIN
+                         SELECT array_to_string(array_agg(trans), ';')
+                           INTO normtext
+                           FROM (SELECT lookup_word as trans,
+                                        getorcreate_housenumber_id(lookup_word)
+                                 FROM (SELECT make_standard_name(h) as lookup_word
+                                       FROM regexp_split_to_table(housenumber, '[,;]') h) x) y;
+                         return normtext;
+                       END;
+                       $$ LANGUAGE plpgsql STABLE STRICT;""")
+        cur.execute("DELETE FROM word WHERE class = 'place' and type = 'house'")
+        cur.execute("""UPDATE placex
+                       SET housenumber = create_housenumber_id(housenumber)
+                       WHERE housenumber is not null""")

 
 
 
 

-@_migration(3, 5, 0, 99)
-def add_nominatim_property_table(conn, config, **_):
-    """ Add nominatim_property table.
+@_migration(3, 7, 0, 0)
+def switch_placenode_geometry_index(conn, **_):
+    """ 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.

     """
     """

-    if not conn.table_exists('nominatim_properties'):
+    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, config, **_):
+    """ 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)
+
+
+@_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:
         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(""" 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.
+    """
+    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, **_):
+    """ 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, **_):
+    """ 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, config, **_):
+    """ 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)