add etldoc to layer_housenumber

layers/housenumber/housenumber_centroid.sql

@@ -1,2 +1,4 @@
+
+-- etldoc: osm_housenumber_point -> osm_housenumber_point
 UPDATE osm_housenumber_point SET geometry=topoint(geometry)
 WHERE ST_GeometryType(geometry) <> 'ST_Point';

layers/housenumber/layer.sql

@@ -1,5 +1,10 @@
+
+-- etldoc: layer_housenumber[shape=record fillcolor=lightpink, style="rounded,filled",  
+-- etldoc:     label="layer_housenumber | <z14_> z14_" ] ;
+
 CREATE OR REPLACE FUNCTION layer_housenumber(bbox geometry, zoom_level integer)
 RETURNS TABLE(osm_id bigint, geometry geometry, housenumber text) AS $$
+   -- etldoc: osm_housenumber_point -> layer_housenumber:z14_
     SELECT osm_id, geometry, housenumber FROM osm_housenumber_point
     WHERE zoom_level >= 14 AND geometry && bbox;
 $$ LANGUAGE SQL IMMUTABLE;

layers/housenumber/mapping.yaml

@@ -1,4 +1,7 @@
+
 tables:
+
+  # etldoc: imposm3 -> osm_housenumber_point
   housenumber_point:
     type: geometry
     fields: