Use classes from ClearTables and add continents

layers/place/layer.sql

@@ -0,0 +1,32 @@
+
+-- etldoc: layer_place[shape=record fillcolor=lightpink, style="rounded,filled",
+-- etldoc:     label="layer_place | <zall> z0-z14_ " ] ;
+
+-- etldoc: layer_continent -> layer_place
+-- etldoc: layer_country   -> layer_place
+-- etldoc: layer_state     -> layer_place
+-- etldoc: layer_city      -> layer_place
+
+CREATE OR REPLACE FUNCTION layer_place(bbox geometry, zoom_level int, pixel_width numeric)
+RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, class text, subclass text, "rank" int, capital INT) AS $$
+    SELECT
+        osm_id, geometry, name, name_en,
+        'continent' AS class, 'continent' AS subclass, 1 AS "rank", NULL::int AS capital
+    FROM osm_continent_point
+    WHERE geometry && bbox AND zoom_level < 4
+    UNION ALL
+    SELECT
+        osm_id, geometry, name, name_en,
+        'country' AS class, 'country' AS subclass,"rank", NULL::int AS capital
+    FROM layer_country(bbox, zoom_level)
+    UNION ALL
+    SELECT
+        osm_id, geometry, name, name_en,
+        'state' AS class, 'state' AS subclass, "rank", NULL::int AS capital
+    FROM layer_state(bbox, zoom_level)
+    UNION ALL
+    SELECT
+        osm_id, geometry, name, name_en,
+        place_class(place::text) AS class, place::text AS subclass, "rank", capital
+    FROM layer_city(bbox, zoom_level, pixel_width)
+$$ LANGUAGE SQL IMMUTABLE;