Use pseudoarea in landuse

src/import-osm/mapping.yml

@@ -2,15 +2,15 @@ use_single_id_space: true
 generalized_tables:
   landuse_polygon_gen0:
     source: landuse_polygon_gen1
-    sql_filter: ST_Area(geometry)>500000.000000
+    sql_filter: area>500000.000000
     tolerance: 200.0
   landuse_polygon_gen1:
     source: landuse_polygon
-    sql_filter: ST_Area(geometry)>50000.000000
+    sql_filter: area>50000.000000
     tolerance: 50.0
   water_polygon_gen1:
     source: water_polygon
-    sql_filter: ST_Area(geometry)>40000.000000
+    sql_filter: area>40000.000000
     tolerance: 30.0
   building_polygon_gen0:
     source: building_polygon
@@ -326,6 +326,8 @@ tables:
       type: pbf_timestamp
     - name: type
       type: mapping_value
+    - name: area
+      type: pseudoarea
     mapping:
       landuse:
       - allotments

src/import-sql/indizes.sql

@@ -1,5 +1,2 @@
 DROP INDEX IF EXISTS osm_road_geometry_class;
 CREATE INDEX osm_road_geometry_class ON osm_road_geometry(road_class(type, service, access));
-
-DROP INDEX IF EXISTS osm_landuse_polygon;
-CREATE INDEX osm_landuse_polygon_area ON osm_landuse_polygon(ST_Area(geometry));

src/import-sql/layers/landuse.sql

@@ -7,31 +7,31 @@ CREATE OR REPLACE VIEW landuse_z7toz8 AS
     SELECT id AS osm_id, geometry, type
     FROM osm_landuse_polygon_gen0
     WHERE landuse_class(type) IN ('wood', 'residential')
-      AND st_area(geometry) > 1000000;
+      AND area > 1000000;
 
 CREATE OR REPLACE VIEW landuse_z9 AS
     SELECT id AS osm_id, geometry, type
     FROM osm_landuse_polygon_gen0
     WHERE landuse_class(type) IN ('wood', 'residential', 'grass', 'cemetery', 'park', 'school')
-      AND st_area(geometry) > 500000;
+      AND area > 500000;
 
 CREATE OR REPLACE VIEW landuse_z10 AS
     SELECT id AS osm_id, geometry, type
     FROM osm_landuse_polygon_gen0
     WHERE landuse_class(type) IN ('wood', 'residential', 'commercial', 'retail', 'railway', 'industrial', 'grass', 'cemetery', 'park', 'school')
-      AND st_area(geometry) > 99000;
+      AND area > 99000;
 
 CREATE OR REPLACE VIEW landuse_z11 AS
     SELECT id AS osm_id, geometry, type
     FROM osm_landuse_polygon_gen1
     WHERE landuse_class(type) IN ('wood', 'residential','commercial', 'retail', 'railway', 'industrial', 'military', 'grass', 'cemetery', 'park', 'school', 'hospital')
-      AND st_area(geometry) > 50000;
+      AND area > 50000;
 
 CREATE OR REPLACE VIEW landuse_z12 AS
     SELECT id AS osm_id, geometry, type
     FROM osm_landuse_polygon
     WHERE landuse_class(type) IN ('wood', 'residential', 'grass','retail', 'railway', 'industrial', 'military', 'cemetery', 'park', 'school', 'hospital')
-      AND st_area(geometry) > 10000;
+      AND area > 10000;
 
 CREATE OR REPLACE VIEW landuse_z13toz14 AS
     SELECT id AS osm_id, geometry, type