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reindex postcodes that loose their parents

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When the parent place of a postcode is deleted, it needs to
be reindexed to get a new parent. Otherwise displaying of
results is broken.
This commit is contained in:
Sarah Hoffmann
2024-05-04 10:16:14 +02:00
parent 332de72045
commit 77631f90fd
7 changed files with 43 additions and 2 deletions
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13
nominatim/tools/migration.py
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@@ -384,7 +384,7 @@ def add_improved_geometry_reverse_placenode_index(conn: Connection, **_: Any) ->
""")
@_migration(4, 4, 99, 0)
def create_postcode_ara_lookup_index(conn: Connection, **_: Any) -> None:
def create_postcode_area_lookup_index(conn: Connection, **_: Any) -> None:
""" Create index needed for looking up postcode areas from postocde points.
"""
with conn.cursor() as cur:
@@ -392,3 +392,14 @@ def create_postcode_ara_lookup_index(conn: Connection, **_: Any) -> None:
ON placex USING BTREE (country_code, postcode)
WHERE osm_type = 'R' AND class = 'boundary' AND type = 'postal_code'
""")
@_migration(4, 4, 99, 1)
def create_postcode_parent_index(conn: Connection, **_: Any) -> None:
""" Create index needed for updating postcodes when a parent changes.
"""
if conn.table_exists('planet_osm_ways'):
with conn.cursor() as cur:
cur.execute("""CREATE INDEX IF NOT EXISTS
idx_location_postcode_parent_place_id
ON location_postcode USING BTREE (parent_place_id)""")