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-- This config example file is released into the Public Domain.
-- This file is part of the examples for using the locator function of
-- osm2pgsql. It is used to import all country boundaries into a database.
local countries = osm2pgsql.define_relation_table('countries', {
-- For the ISO3166-1 Alpha-2 country code
-- https://en.wikipedia.org/wiki/ISO_3166-1
{ column = 'code', type = 'text', not_null = true },
-- Because we want to use the geometries for the locator feature they
-- must be in 4326! We use a polygon type here and will later split
-- multipolygons into their parts.
{ column = 'geom', type = 'polygon', not_null = true, projection = 4326 },
})
function osm2pgsql.process_relation(object)
local t = object.tags
if t.boundary == 'administrative' and t.admin_level == '2' then
local code = t['ISO3166-1']
-- Ignore entries with syntactically invalid ISO code
if not code or not string.match(code, '^%u%u$') then
return
end
for geom in object:as_multipolygon():geometries() do
countries:insert({
code = code,
geom = geom,
})
end
end
end
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