Add name_en to transportation_name #88

layers/transportation_name/layer.sql

@@ -3,8 +3,10 @@
 -- etldoc:     label="layer_transportation_name | <z8> z8 |<z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14_> z14+" ] ;
 
 CREATE OR REPLACE FUNCTION layer_transportation_name(bbox geometry, zoom_level integer)
-RETURNS TABLE(osm_id bigint, geometry geometry, name text, ref text, ref_length int, network text, class text) AS $$
-    SELECT osm_id, geometry, name,
+RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, ref text, ref_length int, network text, class text) AS $$
+    SELECT osm_id, geometry,
+      NULLIF(name, '') AS name,
+      COALESCE(NULLIF(name_en, ''), name) AS name_en,
       NULLIF(ref, ''), NULLIF(LENGTH(ref), 0) AS ref_length,
       --TODO: The road network of the road is not yet implemented
       NULL::text AS network,

layers/transportation_name/merge_highways.sql

@@ -34,14 +34,14 @@ CREATE MATERIALIZED VIEW osm_transportation_name_linestring AS (
 	    FROM osm_highway_linestring
         -- We only care about highways (not railways) for labeling
 	    WHERE (name <> '' OR ref <> '') AND NULLIF(highway, '') IS NOT NULL
-	    GROUP BY name, highway, ref
+	    GROUP BY name, name_en, highway, ref
 	) AS highway_union
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_geometry_idx ON osm_transportation_name_linestring USING gist(geometry);
 
 -- etldoc: osm_transportation_name_linestring -> osm_transportation_name_linestring_gen1
 CREATE MATERIALIZED VIEW osm_transportation_name_linestring_gen1 AS (
-    SELECT ST_Simplify(geometry, 50) AS geometry, osm_id, member_osm_ids, name, ref, highway, z_order
+    SELECT ST_Simplify(geometry, 50) AS geometry, osm_id, member_osm_ids, name, name_en, ref, highway, z_order
     FROM osm_transportation_name_linestring
     WHERE highway IN ('motorway','trunk')  AND ST_Length(geometry) > 8000
 );
@@ -49,7 +49,7 @@ CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_gen1_geometry_idx
 
 -- etldoc: osm_transportation_name_linestring_gen1 -> osm_transportation_name_linestring_gen2
 CREATE MATERIALIZED VIEW osm_transportation_name_linestring_gen2 AS (
-    SELECT ST_Simplify(geometry, 120) AS geometry, osm_id, member_osm_ids, name, ref, highway, z_order
+    SELECT ST_Simplify(geometry, 120) AS geometry, osm_id, member_osm_ids, name, name_en, ref, highway, z_order
     FROM osm_transportation_name_linestring_gen1
     WHERE highway IN ('motorway','trunk')  AND ST_Length(geometry) > 14000
 );
@@ -57,7 +57,7 @@ CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_gen2_geometry_idx
 
 -- etldoc: osm_transportation_name_linestring_gen2 -> osm_transportation_name_linestring_gen3
 CREATE MATERIALIZED VIEW osm_transportation_name_linestring_gen3 AS (
-    SELECT ST_Simplify(geometry, 120) AS geometry, osm_id, member_osm_ids, name, ref, highway, z_order
+    SELECT ST_Simplify(geometry, 120) AS geometry, osm_id, member_osm_ids, name, name_en, ref, highway, z_order
     FROM osm_transportation_name_linestring_gen2
     WHERE highway = 'motorway' AND ST_Length(geometry) > 20000
 );

layers/transportation_name/transportation_name.yaml

@@ -9,6 +9,7 @@ layer:
   srs: +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over
   fields:
     name: The OSM [`name`](http://wiki.openstreetmap.org/wiki/Highways#Names_and_references) value of the highway.
+    name_en: The english `name:en` value if available.
     ref: The OSM [`ref`](http://wiki.openstreetmap.org/wiki/Key:ref) tag of the motorway or road.
     ref_length: Length of the `ref` field. Useful for having a shield icon as background for labeling motorways.
     network: The OSM [`network`](http://wiki.openstreetmap.org/wiki/Key:network) tag of the road.
@@ -31,7 +32,7 @@ layer:
   datasource:
     geometry_field: geometry
     srid: 900913
-    query: (SELECT geometry, name, ref, ref_length, class::text FROM layer_transportation_name(!bbox!, z(!scale_denominator!))) AS t
+    query: (SELECT geometry, name, name_en, ref, ref_length, class::text FROM layer_transportation_name(!bbox!, z(!scale_denominator!))) AS t
 schema:
   - ./merge_highways.sql
   - ./layer.sql