add relations with claimed_by

layers/boundary/boundary.yaml

@@ -4,7 +4,7 @@ layer:
       Contains administrative boundaries as linestrings.
       Until z4 [Natural Earth data](http://www.naturalearthdata.com/downloads/) is used after which
       OSM boundaries ([`boundary=administrative`](http://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative))
-      are present from z5 to z14 (also for maritime boundaries with admin_level <= 2 at z4).
+      are present from z5 to z14 (also for maritime boundaries with `admin_level <= 2` at z4).
       OSM data contains several [`admin_level`](http://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative#admin_level)
       but for most styles it makes sense to just style `admin_level=2` and `admin_level=4`.
   fields:
@@ -18,6 +18,24 @@ layer:
       description: |
           Mark with `1` if the border is disputed.
       values: [0, 1]
+    disputed_view:
+      description: |
+          Field containing name of the disputed area (extracted from border relation in OSM, without spaces) and ISO2 code of country, which wants to see the boundary line.
+          For country boundaries only (`admin_level = 2`).
+          Value examples from Asian OSM pbf extract
+      values:
+      - AbuMusaIsland_AE
+      - BaraHotiiValleys_CN
+      - ChineseClaim_CN
+      - Crimea_RU
+      - Crimea_UA
+      - Demchok_CN
+      - Dokdo_JP
+      - IndianClaim-North_IN
+      - IndianClaimwesternKashmir_IN
+      - PakistaniClaim_PK
+      - SamduValleys_CN
+      - TirpaniValleys_CN
     maritime:
       description: |
           Mark with `1` if it is a maritime border.
@@ -25,6 +43,9 @@ layer:
   buffer_size: 4
   datasource:
     geometry_field: geometry
-    query: (SELECT geometry, admin_level, disputed, maritime FROM layer_boundary(!bbox!, z(!scale_denominator!))) AS t
+    query: (SELECT geometry, admin_level, disputed, disputed_view, maritime FROM layer_boundary(!bbox!, z(!scale_denominator!))) AS t
 schema:
   - ./boundary.sql
+datasources:
+  - type: imposm3
+    mapping_file: ./mapping.yaml