add etldoc to layer_waterway

gen_etl_graph_waterway.sh

@@ -0,0 +1,21 @@
+
+
+ID=waterway
+DOT=${ID}.dot
+
+echo "digraph G
+{    
+rankdir=LR;
+" > $DOT
+
+cat ./layers/${ID}/mapping.yaml   | grep    "# etldoc:" |  sed 's/# etldoc://g'  >>$DOT
+
+cat ./layers/${ID}//waterway.sql  | grep "\-\- etldoc:" |  sed 's/-- etldoc://g' >>$DOT
+
+echo "
+}
+" >> $DOT
+
+cat $DOT
+
+dot -Tpng $DOT > layer_${ID}_etl.png

layers/waterway/mapping.yaml

@@ -1,13 +1,16 @@
 generalized_tables:
+  # etldoc: imposm3 -> osm_waterway_linestring_gen0 
   waterway_linestring_gen0:
     source: waterway_linestring_gen1
     sql_filter: waterway IN ('river') AND ST_Length(geometry) > 10000
     tolerance: 200.0
+  # etldoc: imposm3 -> osm_waterway_linestring_gen1    
   waterway_linestring_gen1:
     source: waterway_linestring
     sql_filter: waterway IN ('river') AND ST_Length(geometry) > 5000
     tolerance: 100.0
 tables:
+  # etldoc: imposm3 -> osm_waterway_linestring
   waterway_linestring:
     type: linestring
     fields:

layers/waterway/waterway.sql

@@ -1,66 +1,89 @@
+
+-- etldoc: ne_110m_rivers_lake_centerlines ->  waterway_z3
 CREATE OR REPLACE VIEW waterway_z3 AS (
     SELECT geom AS geometry, 'river' AS class FROM ne_110m_rivers_lake_centerlines
     WHERE featurecla = 'River'
 );
 
+-- etldoc: ne_50m_rivers_lake_centerlines ->  waterway_z4
 CREATE OR REPLACE VIEW waterway_z4 AS (
     SELECT geom AS geometry, 'river' AS class FROM ne_50m_rivers_lake_centerlines
     WHERE featurecla = 'River'
 );
 
+-- etldoc: ne_10m_rivers_lake_centerlines ->  waterway_z6
 CREATE OR REPLACE VIEW waterway_z6 AS (
     SELECT geom AS geometry, 'river' AS class FROM ne_10m_rivers_lake_centerlines
     WHERE featurecla = 'River'
 );
 
+-- etldoc: osm_waterway_linestring ->  waterway_z8
 CREATE OR REPLACE VIEW waterway_z8 AS (
     SELECT geometry, waterway AS class FROM osm_waterway_linestring
     WHERE waterway IN ('river') AND ST_Length(geometry) > 10000
 );
 
+-- etldoc: osm_waterway_linestring ->  waterway_z9
 CREATE OR REPLACE VIEW waterway_z9 AS (
     SELECT geometry, waterway AS class FROM osm_waterway_linestring
     WHERE waterway IN ('river') AND ST_Length(geometry) > 5000
 );
 
+-- etldoc: osm_waterway_linestring ->  waterway_z11
 CREATE OR REPLACE VIEW waterway_z11 AS (
     SELECT geometry, waterway AS class FROM osm_waterway_linestring
     WHERE waterway IN ('river') AND ST_Length(geometry) > 5000
 );
 
+-- etldoc: osm_waterway_linestring ->  waterway_z12
 CREATE OR REPLACE VIEW waterway_z12 AS (
     SELECT geometry, waterway AS class FROM osm_waterway_linestring
     WHERE waterway IN ('river', 'canal') OR (waterway = 'stream' AND ST_Length(geometry) > 1000)
 );
 
+-- etldoc: osm_waterway_linestring ->  waterway_z13
 CREATE OR REPLACE VIEW waterway_z13 AS (
     SELECT geometry, waterway AS class FROM osm_waterway_linestring
     WHERE waterway IN ('river', 'canal', 'stream', 'drain', 'ditch') AND ST_Length(geometry) > 300
 );
 
+-- etldoc: osm_waterway_linestring ->  waterway_z14
 CREATE OR REPLACE VIEW waterway_z14 AS (
     SELECT geometry, waterway AS class FROM osm_waterway_linestring
 );
 
+
+-- etldoc: layer_waterway[shape=record fillcolor=lightpink, style="rounded,filled",  
+-- etldoc:     label="layer_waterway | <z3> z3 |<z4_5> z4_5 |<z6_7> z6_7 | <z8> z8 |<z9_10> z9_10 |<z11> z11 |<z12> z12|<z13> z13|<z14_> z14_" ] ;
+
 CREATE OR REPLACE FUNCTION layer_waterway(bbox geometry, zoom_level int)
 RETURNS TABLE(geometry geometry, class text) AS $$
     SELECT geometry, class FROM (
+        -- etldoc: waterway_z3 ->  layer_waterway:z3        
         SELECT * FROM waterway_z3 WHERE zoom_level = 3
         UNION ALL
+        -- etldoc: waterway_z4 ->  layer_waterway:z4_5        
         SELECT * FROM waterway_z4 WHERE zoom_level BETWEEN 4 AND 5
         UNION ALL
+        -- etldoc: waterway_z6 ->  layer_waterway:z6_7           
         SELECT * FROM waterway_z6 WHERE zoom_level BETWEEN 6 AND 7
         UNION ALL
+        -- etldoc: waterway_z8 ->  layer_waterway:z8           
         SELECT * FROM waterway_z8 WHERE zoom_level = 8
         UNION ALL
+        -- etldoc: waterway_z9 ->  layer_waterway:z9_10        
         SELECT * FROM waterway_z9 WHERE zoom_level BETWEEN 9 AND 10
         UNION ALL
+        -- etldoc: waterway_z11 ->  layer_waterway:z11        
         SELECT * FROM waterway_z11 WHERE zoom_level = 11
         UNION ALL
+        -- etldoc: waterway_z12 ->  layer_waterway:z12        
         SELECT * FROM waterway_z12 WHERE zoom_level = 12
         UNION ALL
+        -- etldoc: waterway_z13 ->  layer_waterway:z13        
         SELECT * FROM waterway_z13 WHERE zoom_level = 13
         UNION ALL
+        -- etldoc: waterway_z14 ->  layer_waterway:z14_        
         SELECT * FROM waterway_z14 WHERE zoom_level >= 14
     ) AS zoom_levels
     WHERE geometry && bbox;