65 lines
1.5 KiB
PL/PgSQL
65 lines
1.5 KiB
PL/PgSQL
create table point (
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id serial primary key,
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nom text not null,
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altitude double precision,
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geom geometry(point, 4326) not null
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);
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create index idx_point_geom on point using gist (geom);
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create table route (
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id serial primary key,
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depart int,
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arrivee int,
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geom geometry(linestring, 4326) not null,
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longueur double precision
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);
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create index idx_route_geom on route using gist (geom);
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create or replace function maj_longueur()
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returns trigger as $$
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begin
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new.longueur := st_length(new.geom);
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return new;
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end;
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$$ language plpgsql;
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create trigger trigger_longueur
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before insert or update on route
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for each row
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execute function maj_longueur();
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-- ************************************************************
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create table route_cout (
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route_id int references route(id),
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tag text,
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cout float,
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cout_inverse float,
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primary key (route_id, tag)
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);
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create table zone (
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id serial primary key,
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nom text,
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geom geometry(polygon, 4326) -- on choisit srid 4326 (wgs84)
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);
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-- ************************************************************
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INSERT INTO route (source, target, cost, reverse_cost, geom)
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SELECT
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a.id AS source,
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b.id AS target,
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1 AS cost,
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1 AS reverse_cost,
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ST_MakeLine(a.geom, b.geom) AS geom
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FROM point a
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JOIN point b ON a.id = 6 and b.id = 7;
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\COPY point FROM '/tmp/point.csv' (FORMAT CSV, header, ENCODING 'UTF8');
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\COPY route FROM '/tmp/route.csv' (FORMAT CSV, header, ENCODING 'UTF8');
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\COPY zone FROM '/tmp/zone.csv' (FORMAT CSV, header, ENCODING 'UTF8');
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