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add migration for new placenode geometry index

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This commit is contained in:
Sarah Hoffmann
2021-04-09 21:24:35 +02:00
parent e7266b52ae
commit 16267dc021
2 changed files with 18 additions and 1 deletions
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17
nominatim/tools/migration.py
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@@ -156,3 +156,20 @@ def change_housenumber_transliteration(conn, **_):
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, **_):
""" 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 """)

2
nominatim/version.py
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@@ -10,7 +10,7 @@ Version information for Nominatim.
# and must always be increased when there is a change to the database or code
# that requires a migration.
# Released versions always have a database patch level of 0.
NOMINATIM_VERSION = (3, 7, 0, 0)
NOMINATIM_VERSION = (3, 7, 0, 1)
POSTGRESQL_REQUIRED_VERSION = (9, 3)
POSTGIS_REQUIRED_VERSION = (2, 2)