mirror of
https://github.com/osm-search/Nominatim.git
synced 2024-09-11 19:17:17 +03:00
555 lines
14 KiB
Lua
555 lines
14 KiB
Lua
-- Core functions for Nominatim import flex style.
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--
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local module = {}
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local PRE_DELETE = nil
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local PRE_EXTRAS = nil
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local POST_DELETE = nil
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local MAIN_KEYS = nil
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local NAMES = nil
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local ADDRESS_TAGS = nil
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local SAVE_EXTRA_MAINS = false
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local POSTCODE_FALLBACK = true
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-- tables required for taginfo
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module.TAGINFO_MAIN = {keys = {}, delete_tags = {}}
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module.TAGINFO_NAME_KEYS = {}
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module.TAGINFO_ADDRESS_KEYS = {}
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-- The single place table.
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local place_table = osm2pgsql.define_table{
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name = "place",
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ids = { type = 'any', id_column = 'osm_id', type_column = 'osm_type' },
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columns = {
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{ column = 'class', type = 'text', not_null = true },
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{ column = 'type', type = 'text', not_null = true },
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{ column = 'admin_level', type = 'smallint' },
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{ column = 'name', type = 'hstore' },
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{ column = 'address', type = 'hstore' },
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{ column = 'extratags', type = 'hstore' },
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{ column = 'geometry', type = 'geometry', projection = 'WGS84', not_null = true },
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},
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data_tablespace = os.getenv("NOMINATIM_TABLESPACE_PLACE_DATA"),
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index_tablespace = os.getenv("NOMINATIM_TABLESPACE_PLACE_INDEX"),
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indexes = {}
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}
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------------ Geometry functions for relations ---------------------
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function module.relation_as_multipolygon(o)
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return o:as_multipolygon()
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end
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function module.relation_as_multiline(o)
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return o:as_multilinestring():line_merge()
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end
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module.RELATION_TYPES = {
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multipolygon = module.relation_as_multipolygon,
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boundary = module.relation_as_multipolygon,
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waterway = module.relation_as_multiline
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}
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------------- Place class ------------------------------------------
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local Place = {}
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Place.__index = Place
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function Place.new(object, geom_func)
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local self = setmetatable({}, Place)
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self.object = object
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self.geom_func = geom_func
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self.admin_level = tonumber(self.object:grab_tag('admin_level'))
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if self.admin_level == nil
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or self.admin_level <= 0 or self.admin_level > 15
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or math.floor(self.admin_level) ~= self.admin_level then
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self.admin_level = 15
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end
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self.num_entries = 0
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self.has_name = false
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self.names = {}
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self.address = {}
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self.extratags = {}
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return self
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end
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function Place:clean(data)
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for k, v in pairs(self.object.tags) do
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if data.delete ~= nil and data.delete(k, v) then
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self.object.tags[k] = nil
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elseif data.extra ~= nil and data.extra(k, v) then
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self.extratags[k] = v
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self.object.tags[k] = nil
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end
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end
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end
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function Place:delete(data)
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if data.match ~= nil then
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for k, v in pairs(self.object.tags) do
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if data.match(k, v) then
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self.object.tags[k] = nil
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end
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end
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end
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end
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function Place:grab_extratags(data)
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local count = 0
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if data.match ~= nil then
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for k, v in pairs(self.object.tags) do
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if data.match(k, v) then
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self.object.tags[k] = nil
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self.extratags[k] = v
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count = count + 1
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end
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end
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end
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return count
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end
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local function strip_address_prefix(k)
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if k:sub(1, 5) == 'addr:' then
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return k:sub(6)
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end
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if k:sub(1, 6) == 'is_in:' then
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return k:sub(7)
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end
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return k
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end
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function Place:grab_address_parts(data)
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local count = 0
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if data.groups ~= nil then
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for k, v in pairs(self.object.tags) do
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local atype = data.groups(k, v)
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if atype ~= nil then
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if atype == 'main' then
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self.has_name = true
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self.address[strip_address_prefix(k)] = v
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count = count + 1
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elseif atype == 'extra' then
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self.address[strip_address_prefix(k)] = v
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else
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self.address[atype] = v
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end
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self.object.tags[k] = nil
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end
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end
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end
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return count
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end
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function Place:grab_name_parts(data)
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local fallback = nil
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if data.groups ~= nil then
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for k, v in pairs(self.object.tags) do
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local atype = data.groups(k, v)
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if atype ~= nil then
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self.names[k] = v
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self.object.tags[k] = nil
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if atype == 'main' then
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self.has_name = true
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elseif atype == 'house' then
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self.has_name = true
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fallback = {'place', 'house', 'always'}
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end
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end
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end
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end
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return fallback
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end
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function Place:write_place(k, v, mtype, save_extra_mains)
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if mtype == nil then
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return 0
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end
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v = v or self.object.tags[k]
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if v == nil then
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return 0
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end
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if type(mtype) == 'table' then
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mtype = mtype[v] or mtype[1]
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end
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if mtype == 'always' or (self.has_name and mtype == 'named') then
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return self:write_row(k, v, save_extra_mains)
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end
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if mtype == 'named_with_key' then
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local names = {}
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local prefix = k .. ':name'
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for namek, namev in pairs(self.object.tags) do
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if namek:sub(1, #prefix) == prefix
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and (#namek == #prefix
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or namek:sub(#prefix + 1, #prefix + 1) == ':') then
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names[namek:sub(#k + 2)] = namev
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end
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end
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if next(names) ~= nil then
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local saved_names = self.names
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self.names = names
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local results = self:write_row(k, v, save_extra_mains)
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self.names = saved_names
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return results
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end
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end
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return 0
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end
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function Place:write_row(k, v, save_extra_mains)
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if self.geometry == nil then
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self.geometry = self.geom_func(self.object)
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end
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if self.geometry:is_null() then
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return 0
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end
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if save_extra_mains ~= nil then
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for extra_k, extra_v in pairs(self.object.tags) do
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if extra_k ~= k and save_extra_mains(extra_k, extra_v) then
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self.extratags[extra_k] = extra_v
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end
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end
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end
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place_table:insert{
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class = k,
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type = v,
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admin_level = self.admin_level,
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name = next(self.names) and self.names,
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address = next(self.address) and self.address,
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extratags = next(self.extratags) and self.extratags,
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geometry = self.geometry
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}
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if save_extra_mains then
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for tk, tv in pairs(self.object.tags) do
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if save_extra_mains(tk, tv) then
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self.extratags[tk] = nil
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end
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end
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end
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self.num_entries = self.num_entries + 1
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return 1
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end
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function module.tag_match(data)
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if data == nil or next(data) == nil then
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return nil
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end
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local fullmatches = {}
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local key_prefixes = {}
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local key_suffixes = {}
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if data.keys ~= nil then
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for _, key in pairs(data.keys) do
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if key:sub(1, 1) == '*' then
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if #key > 1 then
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if key_suffixes[#key - 1] == nil then
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key_suffixes[#key - 1] = {}
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end
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key_suffixes[#key - 1][key:sub(2)] = true
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end
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elseif key:sub(#key, #key) == '*' then
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if key_prefixes[#key - 1] == nil then
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key_prefixes[#key - 1] = {}
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end
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key_prefixes[#key - 1][key:sub(1, #key - 1)] = true
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else
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fullmatches[key] = true
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end
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end
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end
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if data.tags ~= nil then
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for k, vlist in pairs(data.tags) do
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if fullmatches[k] == nil then
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fullmatches[k] = {}
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for _, v in pairs(vlist) do
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fullmatches[k][v] = true
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end
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end
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end
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end
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return function (k, v)
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if fullmatches[k] ~= nil and (fullmatches[k] == true or fullmatches[k][v] ~= nil) then
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return true
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end
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for slen, slist in pairs(key_suffixes) do
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if #k >= slen and slist[k:sub(-slen)] ~= nil then
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return true
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end
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end
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for slen, slist in pairs(key_prefixes) do
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if #k >= slen and slist[k:sub(1, slen)] ~= nil then
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return true
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end
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end
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return false
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end
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end
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function module.tag_group(data)
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if data == nil or next(data) == nil then
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return nil
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end
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local fullmatches = {}
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local key_prefixes = {}
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local key_suffixes = {}
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for group, tags in pairs(data) do
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for _, key in pairs(tags) do
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if key:sub(1, 1) == '*' then
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if #key > 1 then
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if key_suffixes[#key - 1] == nil then
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key_suffixes[#key - 1] = {}
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end
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key_suffixes[#key - 1][key:sub(2)] = group
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end
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elseif key:sub(#key, #key) == '*' then
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if key_prefixes[#key - 1] == nil then
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key_prefixes[#key - 1] = {}
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end
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key_prefixes[#key - 1][key:sub(1, #key - 1)] = group
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else
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fullmatches[key] = group
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end
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end
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end
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return function (k, v)
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local val = fullmatches[k]
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if val ~= nil then
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return val
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end
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for slen, slist in pairs(key_suffixes) do
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if #k >= slen then
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val = slist[k:sub(-slen)]
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if val ~= nil then
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return val
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end
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end
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end
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for slen, slist in pairs(key_prefixes) do
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if #k >= slen then
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val = slist[k:sub(1, slen)]
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if val ~= nil then
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return val
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end
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end
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end
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end
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end
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-- Returns prefix part of the keys, and reject suffix matching keys
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local function process_key(key)
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if key:sub(1, 1) == '*' then
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return nil
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end
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if key:sub(#key, #key) == '*' then
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return key:sub(1, #key - 2)
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end
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return key
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end
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-- Process functions for all data types
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function module.process_node(object)
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local function geom_func(o)
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return o:as_point()
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end
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module.process_tags(Place.new(object, geom_func))
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end
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function module.process_way(object)
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local function geom_func(o)
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local geom = o:as_polygon()
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if geom:is_null() then
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geom = o:as_linestring()
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end
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return geom
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end
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module.process_tags(Place.new(object, geom_func))
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end
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function module.process_relation(object)
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local geom_func = module.RELATION_TYPES[object.tags.type]
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if geom_func ~= nil then
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module.process_tags(Place.new(object, geom_func))
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end
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end
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-- The process functions are used by default by osm2pgsql.
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osm2pgsql.process_node = module.process_node
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osm2pgsql.process_way = module.process_way
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osm2pgsql.process_relation = module.process_relation
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function module.process_tags(o)
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o:clean{delete = PRE_DELETE, extra = PRE_EXTRAS}
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-- Exception for boundary/place double tagging
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if o.object.tags.boundary == 'administrative' then
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o:grab_extratags{match = function (k, v)
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return k == 'place' and v:sub(1,3) ~= 'isl'
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end}
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end
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-- name keys
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local fallback = o:grab_name_parts{groups=NAMES}
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-- address keys
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if o:grab_address_parts{groups=ADDRESS_TAGS} > 0 and fallback == nil then
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fallback = {'place', 'house', 'always'}
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end
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if o.address.country ~= nil and #o.address.country ~= 2 then
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o.address['country'] = nil
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end
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if POSTCODE_FALLBACK and fallback == nil and o.address.postcode ~= nil then
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fallback = {'place', 'postcode', 'always'}
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end
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if o.address.interpolation ~= nil then
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o:write_place('place', 'houses', 'always', SAVE_EXTRA_MAINS)
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return
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end
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o:clean{delete = POST_DELETE}
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-- collect main keys
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for k, v in pairs(o.object.tags) do
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local ktype = MAIN_KEYS[k]
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if ktype == 'fallback' then
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if o.has_name then
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fallback = {k, v, 'named'}
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end
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elseif ktype ~= nil then
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o:write_place(k, v, MAIN_KEYS[k], SAVE_EXTRA_MAINS)
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end
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end
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if fallback ~= nil and o.num_entries == 0 then
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o:write_place(fallback[1], fallback[2], fallback[3], SAVE_EXTRA_MAINS)
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end
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end
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--------- Convenience functions for simple style configuration -----------------
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function module.set_prefilters(data)
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PRE_DELETE = module.tag_match{keys = data.delete_keys, tags = data.delete_tags}
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PRE_EXTRAS = module.tag_match{keys = data.extra_keys,
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tags = data.extra_tags}
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module.TAGINFO_MAIN.delete_tags = data.delete_tags
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end
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function module.set_main_tags(data)
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MAIN_KEYS = data
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local keys = {}
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for k, _ in pairs(data) do
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table.insert(keys, k)
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end
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module.TAGINFO_MAIN.keys = keys
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end
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function module.set_name_tags(data)
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NAMES = module.tag_group(data)
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for _, lst in pairs(data) do
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for _, k in ipairs(lst) do
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local key = process_key(k)
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if key ~= nil then
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module.TAGINFO_NAME_KEYS[key] = true
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end
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end
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end
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end
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function module.set_address_tags(data)
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if data.postcode_fallback ~= nil then
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POSTCODE_FALLBACK = data.postcode_fallback
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data.postcode_fallback = nil
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end
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ADDRESS_TAGS = module.tag_group(data)
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for _, lst in pairs(data) do
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if lst ~= nil then
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for _, k in ipairs(lst) do
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local key = process_key(k)
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if key ~= nil then
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module.TAGINFO_ADDRESS_KEYS[key] = true
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end
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end
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end
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end
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end
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function module.set_unused_handling(data)
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if data.extra_keys == nil and data.extra_tags == nil then
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POST_DELETE = module.tag_match{keys = data.delete_keys, tags = data.delete_tags}
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SAVE_EXTRA_MAINS = function() return true end
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elseif data.delete_keys == nil and data.delete_tags == nil then
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POST_DELETE = nil
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SAVE_EXTRA_MAINS = module.tag_match{keys = data.extra_keys, tags = data.extra_tags}
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else
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error("unused handler can have only 'extra_keys' or 'delete_keys' set.")
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end
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end
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function module.set_relation_types(data)
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module.RELATION_TYPES = {}
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for k, v in data do
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if v == 'multipolygon' then
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module.RELATION_TYPES[k] = module.relation_as_multipolygon
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elseif v == 'multiline' then
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module.RELATION_TYPES[k] = module.relation_as_multiline
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end
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end
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end
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return module
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