From 81571426457d6faa6485bebf003a81267d3f085d Mon Sep 17 00:00:00 2001
From: chmnata <chmnata@gmail.com>
Date: Mon, 26 Feb 2024 20:54:24 +0000
Subject: [PATCH] #884 create latest mat view for intersection layer as well

---
 ...w_centreline_intersection_point_latest.sql | 19 +++++++++++++++++++
 .../create_matview_intersection_latest.sql    | 19 +++++++++++++++++++
 ...r_centreline_intersection_point_latest.sql | 17 +++++++++++++++++
 .../create_trigger_intersection_latest.sql    | 17 +++++++++++++++++
 4 files changed, 72 insertions(+)
 create mode 100644 gis/centreline/sql/create_matview_centreline_intersection_point_latest.sql
 create mode 100644 gis/centreline/sql/create_matview_intersection_latest.sql
 create mode 100644 gis/centreline/sql/create_trigger_centreline_intersection_point_latest.sql
 create mode 100644 gis/centreline/sql/create_trigger_intersection_latest.sql

diff --git a/gis/centreline/sql/create_matview_centreline_intersection_point_latest.sql b/gis/centreline/sql/create_matview_centreline_intersection_point_latest.sql
new file mode 100644
index 000000000..725c1c18c
--- /dev/null
+++ b/gis/centreline/sql/create_matview_centreline_intersection_point_latest.sql
@@ -0,0 +1,19 @@
+CREATE MATERIALIZED VIEW gis_core.centreline_intersection_point_latest AS
+
+SELECT *
+FROM gis_core.centreline_intersection_point
+WHERE version_date = (SELECT MAX(version_date) FROM gis_core.centreline_intersection_point);
+
+CREATE TRIGGER refresh_trigger
+AFTER INSERT OR UPDATE OR DELETE
+ON gis_core.centreline_intersection_point
+FOR EACH STATEMENT
+EXECUTE PROCEDURE gis_core.centreline_intersection_point_latest_trigger();
+
+CREATE INDEX gis_core_centreline_intersection_point_latest_geom ON gis_core.centreline_intersection_point_latest USING gist (geom);
+
+ALTER MATERIALIZED VIEW gis_core.centreline_intersection_point_latest OWNER TO gis_admins;
+
+GRANT SELECT ON gis_core.centreline_intersection_point_latest TO bdit_humans;
+
+COMMENT ON MATERIALIZED VIEW gis_core.centreline_intersection_point_latest IS 'Materialized view containing the latest version of centreline intersection point, derived from gis_core.centreline_intersection_point.'
diff --git a/gis/centreline/sql/create_matview_intersection_latest.sql b/gis/centreline/sql/create_matview_intersection_latest.sql
new file mode 100644
index 000000000..a7b0fc55a
--- /dev/null
+++ b/gis/centreline/sql/create_matview_intersection_latest.sql
@@ -0,0 +1,19 @@
+CREATE MATERIALIZED VIEW gis_core.intersection_latest AS
+
+SELECT *
+FROM gis_core.intersection
+WHERE version_date = (SELECT MAX(version_date) FROM gis_core.intersection);
+
+CREATE TRIGGER refresh_trigger
+AFTER INSERT OR UPDATE OR DELETE
+ON gis_core.intersection
+FOR EACH STATEMENT
+EXECUTE PROCEDURE gis_core.intersection_latest_trigger();
+
+CREATE INDEX gis_core_intersection_latest_geom ON gis_core.intersection_latest USING gist (geom);
+
+ALTER MATERIALIZED VIEW gis_core.intersection_latest OWNER TO gis_admins;
+
+GRANT SELECT ON gis_core.intersection_latest TO bdit_humans;
+
+COMMENT ON MATERIALIZED VIEW gis_core.intersection_latest IS 'Materialized view containing the latest version of intersection , derived from gis_core.intersection.'
\ No newline at end of file
diff --git a/gis/centreline/sql/create_trigger_centreline_intersection_point_latest.sql b/gis/centreline/sql/create_trigger_centreline_intersection_point_latest.sql
new file mode 100644
index 000000000..89d000279
--- /dev/null
+++ b/gis/centreline/sql/create_trigger_centreline_intersection_point_latest.sql
@@ -0,0 +1,17 @@
+CREATE OR REPLACE FUNCTION gis_core.centreline_intersection_point_latest_trigger()
+RETURNS trigger
+LANGUAGE 'plpgsql'
+COST 100
+VOLATILE NOT LEAKPROOF SECURITY DEFINER
+AS $BODY$
+BEGIN
+
+REFRESH MATERIALIZED VIEW gis_core.centreline_intersection_point_latest;
+RETURN NULL;
+
+END;
+$BODY$;
+
+ALTER FUNCTION gis_core.centreline_intersection_point_latest_trigger() OWNER TO gis_admins;
+
+COMMENT ON FUNCTION gis_core.centreline_intersection_point_latest_trigger() IS 'Trigger fuction that refreshes the centreline_intersection_point_latest mat view after an update.';
\ No newline at end of file
diff --git a/gis/centreline/sql/create_trigger_intersection_latest.sql b/gis/centreline/sql/create_trigger_intersection_latest.sql
new file mode 100644
index 000000000..17ef9b1d3
--- /dev/null
+++ b/gis/centreline/sql/create_trigger_intersection_latest.sql
@@ -0,0 +1,17 @@
+CREATE OR REPLACE FUNCTION gis_core.intersection_latest_trigger()
+RETURNS trigger
+LANGUAGE 'plpgsql'
+COST 100
+VOLATILE NOT LEAKPROOF SECURITY DEFINER
+AS $BODY$
+BEGIN
+
+REFRESH MATERIALIZED VIEW gis_core.intersection_latest;
+RETURN NULL;
+
+END;
+$BODY$;
+
+ALTER FUNCTION gis_core.intersection_latest_trigger() OWNER TO gis_admins;
+
+COMMENT ON FUNCTION gis_core.intersection_latest_trigger() IS 'Trigger fuction that refreshes the intersection_latest mat view after an update.';
\ No newline at end of file