From b706ff638b34a6d631b432533fcc0366b10a358b Mon Sep 17 00:00:00 2001
From: MaelReboux <m.reboux@rennesmetropole.fr>
Date: Sun, 19 May 2019 11:23:00 +0200
Subject: [PATCH] Gestion des zones de boucles

---
 scripts/create_tables.sql       | 39 +++++++++++++++++++++++++++++----
 scripts/patch_osm_roads_pgr.sql | 33 ++++++++++++++++++++++++++++
 scripts/traitements_phase_2.sh  |  8 +++++++
 3 files changed, 76 insertions(+), 4 deletions(-)
 create mode 100644 scripts/patch_osm_roads_pgr.sql

diff --git a/scripts/create_tables.sql b/scripts/create_tables.sql
index 043982c..3ec8b7b 100644
--- a/scripts/create_tables.sql
+++ b/scripts/create_tables.sql
@@ -257,12 +257,43 @@ CREATE TABLE phase_2_point_nettoyage
 ALTER TABLE phase_2_point_nettoyage OWNER to redadeg;
 
 
--- dans la base redadeg on chargera la couche osm_roads qui a été calculée
--- à partir de données OSM
+-- couche de polygones pour supprimer le contenu de osm_roads_pgr pour la gestion des boucles
+DROP TABLE IF EXISTS osm_roads_pgr_patch_mask ;
+CREATE TABLE osm_roads_mask
+(
+  id serial,
+  name text,
+  the_geom geometry,
+  CONSTRAINT osm_roads_pgr_patch_mask_pkid PRIMARY KEY (id),
+  CONSTRAINT enforce_geotype_the_geom CHECK (geometrytype(the_geom) = 'POLYGON'::text),
+  CONSTRAINT enforce_srid_the_geom CHECK (st_srid(the_geom) = 2154)
+);
+ALTER TABLE osm_roads_pgr_patch_mask OWNER to redadeg;
 
 
--- 1. création d'un schéma qui va accueillir le réseau topologique de la couche osm_roads
-SELECT topology.CreateTopology('osm_roads_topo', 2154);
+-- couche jumelle de osm_roads mais avec des lignes gérées à la main pour les boucles
+DROP TABLE IF EXISTS osm_roads_pgr_patch ;
+CREATE TABLE osm_roads_pgr_patch
+(
+  id serial,
+  osm_id bigint,
+  highway text,
+  type text,
+  oneway text,
+  ref text,
+  name_fr text,
+  name_br text,
+  source bigint,
+  target bigint,
+  cost double precision,
+  reverse_cost double precision,
+  the_geom geometry,
+  CONSTRAINT osm_roads_pgr_patch_pkey PRIMARY KEY (id),
+  CONSTRAINT enforce_geotype_the_geom CHECK (geometrytype(the_geom) = 'LINESTRING'::text OR geometrytype(the_geom) = 'MULTILINESTRING'::text),
+  CONSTRAINT enforce_srid_the_geom CHECK (st_srid(the_geom) = 2154)
+);
+ALTER TABLE osm_roads_pgr_patch OWNER to redadeg;
+
 
 
 -- la table qui va recevoir le résultat du calcul d'itinéraire
diff --git a/scripts/patch_osm_roads_pgr.sql b/scripts/patch_osm_roads_pgr.sql
new file mode 100644
index 0000000..0cc1e3e
--- /dev/null
+++ b/scripts/patch_osm_roads_pgr.sql
@@ -0,0 +1,33 @@
+
+
+
+
+
+-- suppression des objets couche osm_roads_pgr qui intersectent avec les zones de boucles
+DELETE FROM osm_roads_pgr WHERE id IN
+(
+  SELECT a.id 
+  FROM osm_roads_pgr a, osm_roads_pgr_patch_mask m
+  WHERE ST_INTERSECTS(a.the_geom, m.the_geom)
+);
+
+-- collage des objets de la couche osm_roads_pgr_patch à la place des objets supprimés
+INSERT INTO osm_roads_pgr
+  SELECT
+    0-a.id AS id,
+  a.osm_id, a.highway, a.type, a.oneway, a.ref, a.name_fr, a.name_br,
+  NULL, NULL, NULL, NULL,
+  a.the_geom
+  FROM osm_roads_pgr_patch a, osm_roads_pgr_patch_mask m
+  WHERE ST_INTERSECTS(a.the_geom, m.the_geom);
+
+
+-- calcul des 2 attributs de coût (= longueur)
+UPDATE osm_roads_pgr 
+SET cost = st_length(the_geom), reverse_cost = st_length(the_geom)
+WHERE id < 0 ;
+
+
+-- calcul de la topologie pgRouting sur les zones de masque
+SELECT pgr_createTopology('osm_roads_pgr', 0.001, 'the_geom', 'id', 'source', 'target', rows_where := 'id < 0', clean := false);
+
diff --git a/scripts/traitements_phase_2.sh b/scripts/traitements_phase_2.sh
index fa679a6..62a77aa 100755
--- a/scripts/traitements_phase_2.sh
+++ b/scripts/traitements_phase_2.sh
@@ -84,6 +84,14 @@ echo "  fait"
 echo "nettoyage de la couche de routage par les points ciblés"
 $PSQL -h $DB_HOST -U $DB_USER -d $DB_NAME -c "UPDATE osm_roads_pgr SET cost = 1000000, reverse_cost = 1000000 WHERE id IN (SELECT r.id FROM osm_roads_pgr r JOIN phase_2_point_nettoyage p ON r.id = p.edge_id);"
 echo "  fait"
+echo ""
+
+
+# patch de la couche de routage sur les zones de boucles
+echo "patch de la couche de routage sur les zones de boucles"
+$PSQL -h $DB_HOST -U $DB_USER -d $DB_NAME < patch_osm_roads_pgr.sql
+echo "  fait"
+echo ""
 
 
 # on fait la requête qui va donner une liste de PK de secteurs