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simplify name matching between boundary and place node

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Instead of normalising the names simply compare them in lower
case. This removes the dependency on the tokenizer for
linking boundaries and nodes. When looking up the linked places
by place type also allow that one name is simply contained in the
other. This catches the frequent case where one of the names has
an addendum (e.g. Newport vs. City of Newport).

Drops the special index for the name lookup and insted relies
on a slightly extended version of the geometry index used for
reverse lookup. Saves around 100MB on a planet.
This commit is contained in:
Sarah Hoffmann
2021-04-09 21:10:00 +02:00
parent dc02610408
commit e7266b52ae
3 changed files with 14 additions and 13 deletions
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6
lib-sql/indices.sql
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@@ -23,12 +23,6 @@ CREATE INDEX {{sql.if_index_not_exists}} idx_placex_geometry_reverse_lookupPolyg
AND rank_address between 4 and 25 AND type != 'postcode'
AND name is not null AND indexed_status = 0 AND linked_place_id is null;
CREATE INDEX {{sql.if_index_not_exists}} idx_placex_geometry_reverse_placeNode
ON placex USING gist (geometry) {{db.tablespace.search_index}}
WHERE osm_type = 'N' AND rank_search between 5 and 25
AND class = 'place' AND type != 'postcode'
AND name is not null AND indexed_status = 0 AND linked_place_id is null;
CREATE INDEX {{sql.if_index_not_exists}} idx_osmline_parent_place_id
ON location_property_osmline USING BTREE (parent_place_id) {{db.tablespace.search_index}};