BUGFIX: Route concurrency data is wiped after route member updates (#1239)

This PR is a bugfix for the `transportation_name` layer.  Currently, the updates process does not work, as noted by @zstadler in #1230.  The issue is that the computed `concurrency_index` column in `osm_route_member` is never updated after the initial updates.  Therefore, whenever route member ways are updated, they will lose their route concurrency index, and hence route concurrencies will be lost in the `transportation_name` tiles.  This PR adds the missing concurrency index update code to the transportation/network update triggers.

This PR as written also incorporates the fixes in #1230 and #1233.

The following SQL is a unit test to demonstrate that these triggers work correctly:

```
select count(*) from osm_route_member where concurrency_index > 5;
select count(*) from osm_transportation_name_network where route_6 is not null;

update osm_route_member set concurrency_index=NULL where concurrency_index > 5;

select count(*) from osm_route_member where concurrency_index > 5;
select count(*) from osm_transportation_name_network where route_6 is not null;
```

If working correctly, both pairs of `count(*)` values should return the same pair of numbers.

layers/transportation/update_route_member.sql

@@ -60,13 +60,16 @@ BEGIN
              JOIN transportation_name.network_changes AS c ON
         r.osm_id = c.osm_id;
 
-    UPDATE
+    INSERT INTO osm_route_member (id, network_type, concurrency_index)
-        osm_route_member AS r
+    SELECT
-    SET network_type = osm_route_member_network_type(network)
+      id,
-    FROM transportation_name.network_changes AS c
+      osm_route_member_network_type(network) AS network_type,
-    WHERE network != ''
+      DENSE_RANK() over (PARTITION BY member ORDER BY network_type, network, LENGTH(ref), ref) AS concurrency_index
-      AND network_type IS DISTINCT FROM osm_route_member_network_type(network)
+    FROM osm_route_member rm
-      AND r.member = c.osm_id;
+    WHERE rm.member IN
+      (SELECT DISTINCT osm_id FROM transportation_name.network_changes)
+    ON CONFLICT (id) DO UPDATE SET concurrency_index = EXCLUDED.concurrency_index;
+
 END;
 $$ LANGUAGE plpgsql;
 
@@ -82,6 +85,7 @@ CREATE INDEX IF NOT EXISTS osm_highway_linestring_gen_z11_osm_id_idx ON osm_high
 
 ALTER TABLE osm_route_member ADD COLUMN IF NOT EXISTS concurrency_index int;
 
+-- One-time load of concurrency indexes; updates occur via trigger
 INSERT INTO osm_route_member (id, concurrency_index)
   SELECT
     id,

layers/transportation_name/update_transportation_name.sql

@@ -312,6 +312,22 @@ BEGIN
             transportation_name.network_changes AS c
     WHERE n.osm_id = c.osm_id;
 
+    UPDATE osm_highway_linestring hl
+    SET network = rm.network_type
+    FROM transportation_name.network_changes c,
+         osm_route_member rm
+    WHERE hl.osm_id=c.osm_id
+      AND hl.osm_id=rm.member
+      AND rm.concurrency_index=1;
+
+    UPDATE osm_highway_linestring_gen_z11 hl
+    SET network = rm.network_type
+    FROM transportation_name.network_changes c,
+         osm_route_member rm
+    WHERE hl.osm_id=c.osm_id
+      AND hl.osm_id=rm.member
+      AND rm.concurrency_index=1;
+
     INSERT INTO osm_transportation_name_network
     SELECT
         geometry,
@@ -337,7 +353,7 @@ BEGIN
             CASE WHEN length(hl.name_en) > 15 THEN osml10n_street_abbrev_en(hl.name_en) ELSE NULLIF(hl.name_en, '') END AS name_en,
             CASE WHEN length(hl.name_de) > 15 THEN osml10n_street_abbrev_de(hl.name_de) ELSE NULLIF(hl.name_de, '') END AS name_de,
             slice_language_tags(hl.tags) AS tags,
-            rm.network_type,
+            rm1.network_type,
             CASE
                 WHEN rm1.network_type IS NOT NULL AND rm1.ref::text <> ''
                     THEN rm1.ref::text
@@ -349,13 +365,23 @@ BEGIN
             CASE WHEN highway IN ('footway', 'steps') THEN layer END AS layer,
             CASE WHEN highway IN ('footway', 'steps') THEN level END AS level,
             CASE WHEN highway IN ('footway', 'steps') THEN indoor END AS indoor,
-            route_1, route_2, route_3, route_4, route_5, route_6,
+	    NULLIF(rm1.network, '') || '=' || COALESCE(rm1.ref, '') AS route_1,
+	    NULLIF(rm2.network, '') || '=' || COALESCE(rm2.ref, '') AS route_2,
+	    NULLIF(rm3.network, '') || '=' || COALESCE(rm3.ref, '') AS route_3,
+	    NULLIF(rm4.network, '') || '=' || COALESCE(rm4.ref, '') AS route_4,
+	    NULLIF(rm5.network, '') || '=' || COALESCE(rm5.ref, '') AS route_5,
+	    NULLIF(rm6.network, '') || '=' || COALESCE(rm6.ref, '') AS route_6,
             hl.z_order
         FROM osm_highway_linestring hl
                 JOIN transportation_name.network_changes AS c ON
             hl.osm_id = c.osm_id
-                LEFT OUTER JOIN osm_route_member rm ON rm.member = hl.osm_id AND rm.concurrency_index=1
+		LEFT OUTER JOIN osm_route_member rm1 ON rm1.member = hl.osm_id AND rm1.concurrency_index=1
-        WHERE (hl.name <> '' OR hl.ref <> '')
+		LEFT OUTER JOIN osm_route_member rm2 ON rm2.member = hl.osm_id AND rm2.concurrency_index=2
+		LEFT OUTER JOIN osm_route_member rm3 ON rm3.member = hl.osm_id AND rm3.concurrency_index=3
+		LEFT OUTER JOIN osm_route_member rm4 ON rm4.member = hl.osm_id AND rm4.concurrency_index=4
+		LEFT OUTER JOIN osm_route_member rm5 ON rm5.member = hl.osm_id AND rm5.concurrency_index=5
+		LEFT OUTER JOIN osm_route_member rm6 ON rm6.member = hl.osm_id AND rm6.concurrency_index=6
+	WHERE (hl.name <> '' OR hl.ref <> '' OR rm1.ref <> '' OR rm1.network <> '')
           AND hl.highway <> ''
     ) AS t;
 
@@ -515,7 +541,7 @@ BEGIN
       AND n.level IS NOT DISTINCT FROM c.level
       AND n.layer IS NOT DISTINCT FROM c.layer
       AND n.indoor IS NOT DISTINCT FROM c.indoor
-      AND n.network_type IS NOT DISTINCT FROM c.network_type
+      AND n.network IS NOT DISTINCT FROM c.network_type
       AND n.route_1 IS NOT DISTINCT FROM c.route_1
       AND n.route_2 IS NOT DISTINCT FROM c.route_2
       AND n.route_3 IS NOT DISTINCT FROM c.route_3
@@ -592,7 +618,7 @@ BEGIN
         AND n.highway IS NOT DISTINCT FROM c.highway
         AND n.subclass IS NOT DISTINCT FROM c.subclass
         AND n.brunnel IS NOT DISTINCT FROM c.brunnel
-        AND n.network_type IS NOT DISTINCT FROM c.network_type
+        AND n.network IS NOT DISTINCT FROM c.network_type
         AND n.route_1 IS NOT DISTINCT FROM c.route_1
         AND n.route_2 IS NOT DISTINCT FROM c.route_2
         AND n.route_3 IS NOT DISTINCT FROM c.route_3
@@ -612,7 +638,7 @@ BEGIN
             AND n.highway IS NOT DISTINCT FROM c.highway
             AND n.subclass IS NOT DISTINCT FROM c.subclass
             AND n.brunnel IS NOT DISTINCT FROM c.brunnel
-            AND n.network_type IS NOT DISTINCT FROM c.network_type
+            AND n.network IS NOT DISTINCT FROM c.network_type
             AND n.route_1 IS NOT DISTINCT FROM c.route_1
             AND n.route_2 IS NOT DISTINCT FROM c.route_2
             AND n.route_3 IS NOT DISTINCT FROM c.route_3
@@ -632,7 +658,7 @@ BEGIN
         AND n.highway IS NOT DISTINCT FROM c.highway
         AND n.subclass IS NOT DISTINCT FROM c.subclass
         AND n.brunnel IS NOT DISTINCT FROM c.brunnel
-        AND n.network_type IS NOT DISTINCT FROM c.network_type
+        AND n.network IS NOT DISTINCT FROM c.network_type
         AND n.route_1 IS NOT DISTINCT FROM c.route_1
         AND n.route_2 IS NOT DISTINCT FROM c.route_2
         AND n.route_3 IS NOT DISTINCT FROM c.route_3
@@ -652,7 +678,7 @@ BEGIN
             AND n.highway IS NOT DISTINCT FROM c.highway
             AND n.subclass IS NOT DISTINCT FROM c.subclass
             AND n.brunnel IS NOT DISTINCT FROM c.brunnel
-            AND n.network_type IS NOT DISTINCT FROM c.network_type
+            AND n.network IS NOT DISTINCT FROM c.network_type
             AND n.route_1 IS NOT DISTINCT FROM c.route_1
             AND n.route_2 IS NOT DISTINCT FROM c.route_2
             AND n.route_3 IS NOT DISTINCT FROM c.route_3
@@ -672,7 +698,7 @@ BEGIN
         AND n.highway IS NOT DISTINCT FROM c.highway
         AND n.subclass IS NOT DISTINCT FROM c.subclass
         AND n.brunnel IS NOT DISTINCT FROM c.brunnel
-        AND n.network_type IS NOT DISTINCT FROM c.network_type
+        AND n.network IS NOT DISTINCT FROM c.network_type
         AND n.route_1 IS NOT DISTINCT FROM c.route_1
         AND n.route_2 IS NOT DISTINCT FROM c.route_2
         AND n.route_3 IS NOT DISTINCT FROM c.route_3
@@ -692,7 +718,7 @@ BEGIN
             AND n.highway IS NOT DISTINCT FROM c.highway
             AND n.subclass IS NOT DISTINCT FROM c.subclass
             AND n.brunnel IS NOT DISTINCT FROM c.brunnel
-            AND n.network_type IS NOT DISTINCT FROM c.network_type
+            AND n.network IS NOT DISTINCT FROM c.network_type
             AND n.route_1 IS NOT DISTINCT FROM c.route_1
             AND n.route_2 IS NOT DISTINCT FROM c.route_2
             AND n.route_3 IS NOT DISTINCT FROM c.route_3
@@ -712,7 +738,7 @@ BEGIN
         AND n.highway IS NOT DISTINCT FROM c.highway
         AND n.subclass IS NOT DISTINCT FROM c.subclass
         AND n.brunnel IS NOT DISTINCT FROM c.brunnel
-        AND n.network_type IS NOT DISTINCT FROM c.network_type
+        AND n.network IS NOT DISTINCT FROM c.network_type
         AND n.route_1 IS NOT DISTINCT FROM c.route_1
         AND n.route_2 IS NOT DISTINCT FROM c.route_2
         AND n.route_3 IS NOT DISTINCT FROM c.route_3
@@ -732,7 +758,7 @@ BEGIN
             AND n.highway IS NOT DISTINCT FROM c.highway
             AND n.subclass IS NOT DISTINCT FROM c.subclass
             AND n.brunnel IS NOT DISTINCT FROM c.brunnel
-            AND n.network_type IS NOT DISTINCT FROM c.network_type
+            AND n.network IS NOT DISTINCT FROM c.network_type
             AND n.route_1 IS NOT DISTINCT FROM c.route_1
             AND n.route_2 IS NOT DISTINCT FROM c.route_2
             AND n.route_3 IS NOT DISTINCT FROM c.route_3