update licenses and discussion links

[nominatim.git] / lib-sql / functions / place_triggers.sql

diff --git a/lib-sql/functions/place_triggers.sql b/lib-sql/functions/place_triggers.sql
index 5b2642e7afb83d56883364fc1b86d95dbc6067ad..5b4a844138138fe2cbd72115b92d7a84b43a6199 100644 (file)
--- a/lib-sql/functions/place_triggers.sql
+++ b/lib-sql/functions/place_triggers.sql
@@ -37,7 +37,7 @@ BEGIN
   -- Remove the place from the list of places to be deleted
   DELETE FROM place_to_be_deleted pdel
     WHERE pdel.osm_type = NEW.osm_type and pdel.osm_id = NEW.osm_id
-          and pdel.class = NEW.class;
+          and pdel.class = NEW.class and pdel.type = NEW.type;
 
   -- Have we already done this place?
   SELECT * INTO existing
@@ -47,8 +47,6 @@ BEGIN
 
   {% if debug %}RAISE WARNING 'Existing: %',existing.osm_id;{% endif %}
 
-  -- Handle a place changing type by removing the old data.
-  -- (This trigger is executed BEFORE INSERT of the NEW tuple.)
   IF existing.osm_type IS NULL THEN
     DELETE FROM place where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class;
   END IF;
@@ -192,15 +190,11 @@ BEGIN
     END IF;
     {% endif %}
 
-    IF existing.osm_type IS NOT NULL THEN
-      -- Pathological case caused by the triggerless copy into place during initial import
-      -- force delete even for large areas, it will be reinserted later
-      UPDATE place SET geometry = ST_SetSRID(ST_Point(0,0), 4326)
-        WHERE osm_type = NEW.osm_type and osm_id = NEW.osm_id
-              and class = NEW.class and type = NEW.type;
-      DELETE FROM place
-        WHERE osm_type = NEW.osm_type and osm_id = NEW.osm_id
-              and class = NEW.class and type = NEW.type;
+    IF existingplacex.osm_type is not NULL THEN
+      -- Mark any existing place for delete in the placex table
+      UPDATE placex SET indexed_status = 100
+        WHERE placex.osm_type = NEW.osm_type and placex.osm_id = NEW.osm_id
+              and placex.class = NEW.class and placex.type = NEW.type;
     END IF;
 
     -- Process it as a new insertion
@@ -211,6 +205,27 @@ BEGIN
 
     {% if debug %}RAISE WARNING 'insert done % % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type,NEW.name;{% endif %}
 
+    IF existing.osm_type is not NULL THEN
+      -- If there is already an entry in place, just update that, if necessary.
+      IF coalesce(existing.name, ''::hstore) != coalesce(NEW.name, ''::hstore)
+         or coalesce(existing.address, ''::hstore) != coalesce(NEW.address, ''::hstore)
+         or coalesce(existing.extratags, ''::hstore) != coalesce(NEW.extratags, ''::hstore)
+         or coalesce(existing.admin_level, 15) != coalesce(NEW.admin_level, 15)
+         or existing.geometry::text != NEW.geometry::text
+      THEN
+        UPDATE place
+          SET name = NEW.name,
+              address = NEW.address,
+              extratags = NEW.extratags,
+              admin_level = NEW.admin_level,
+              geometry = NEW.geometry
+          WHERE osm_type = NEW.osm_type and osm_id = NEW.osm_id
+                and class = NEW.class and type = NEW.type;
+      END IF;
+
+      RETURN NULL;
+    END IF;
+
     RETURN NEW;
   END IF;
 
@@ -281,7 +296,9 @@ BEGIN
           extratags = NEW.extratags,
           admin_level = NEW.admin_level,
           indexed_status = 2,
-          geometry = NEW.geometry
+          geometry = CASE WHEN existingplacex.rank_address = 0
+                          THEN simplify_large_polygons(NEW.geometry)
+                          ELSE NEW.geometry END
       WHERE place_id = existingplacex.place_id;
 
     -- Invalidate linked places: they potentially get a new name and addresses.
@@ -348,45 +365,3 @@ BEGIN
   RETURN NULL;
 END;
 $$ LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION flush_deleted_places()
-  RETURNS INTEGER
-  AS $$
-BEGIN
-  -- deleting large polygons can have a massive effect on the system - require manual intervention to let them through
-  INSERT INTO import_polygon_delete (osm_type, osm_id, class, type)
-    SELECT osm_type, osm_id, class, type FROM place_to_be_deleted WHERE deferred;
-
-  -- delete from place table
-  ALTER TABLE place DISABLE TRIGGER place_before_delete;
-  DELETE FROM place USING place_to_be_deleted
-    WHERE place.osm_type = place_to_be_deleted.osm_type
-          and place.osm_id = place_to_be_deleted.osm_id
-          and place.class = place_to_be_deleted.class
-          and place.type = place_to_be_deleted.type
-          and not deferred;
-  ALTER TABLE place ENABLE TRIGGER place_before_delete;
-
-  -- Mark for delete in the placex table
-  UPDATE placex SET indexed_status = 100 FROM place_to_be_deleted
-    WHERE placex.osm_type = place_to_be_deleted.osm_type
-          and placex.osm_id = place_to_be_deleted.osm_id
-          and placex.class = place_to_be_deleted.class
-          and placex.type = place_to_be_deleted.type
-          and not deferred;
-
-   -- Mark for delete in interpolations
-   UPDATE location_property_osmline SET indexed_status = 100 FROM place_to_be_deleted
-    WHERE place_to_be_deleted.osm_type = 'W'
-          and place_to_be_deleted.class = 'place'
-          and place_to_be_deleted.type = 'houses'
-          and location_property_osmline.osm_id = place_to_be_deleted.osm_id
-          and not deferred;
-
-   -- Clear todo list.
-   TRUNCATE TABLE place_to_be_deleted;
-
-   RETURN NULL;
-END;
-$$ LANGUAGE plpgsql;
-