1 -- Functions for term normalisation and access to the 'word' table.
3 CREATE OR REPLACE FUNCTION transliteration(text) RETURNS text
4 AS '{{ modulepath }}/nominatim.so', 'transliteration'
5 LANGUAGE c IMMUTABLE STRICT;
8 CREATE OR REPLACE FUNCTION gettokenstring(text) RETURNS text
9 AS '{{ modulepath }}/nominatim.so', 'gettokenstring'
10 LANGUAGE c IMMUTABLE STRICT;
13 CREATE OR REPLACE FUNCTION make_standard_name(name TEXT) RETURNS TEXT
18 o := public.gettokenstring(public.transliteration(name));
19 RETURN trim(substr(o,1,length(o)));
22 LANGUAGE plpgsql IMMUTABLE;
24 -- returns NULL if the word is too common
25 CREATE OR REPLACE FUNCTION getorcreate_word_id(lookup_word TEXT)
30 return_word_id INTEGER;
33 lookup_token := trim(lookup_word);
34 SELECT min(word_id), max(search_name_count) FROM word
35 WHERE word_token = lookup_token and class is null and type is null
36 INTO return_word_id, count;
37 IF return_word_id IS NULL THEN
38 return_word_id := nextval('seq_word');
39 INSERT INTO word VALUES (return_word_id, lookup_token, null, null, null, null, 0);
41 IF count > get_maxwordfreq() THEN
42 return_word_id := NULL;
45 RETURN return_word_id;
51 CREATE OR REPLACE FUNCTION getorcreate_housenumber_id(lookup_word TEXT)
56 return_word_id INTEGER;
58 lookup_token := ' ' || trim(lookup_word);
59 SELECT min(word_id) FROM word
60 WHERE word_token = lookup_token and class='place' and type='house'
62 IF return_word_id IS NULL THEN
63 return_word_id := nextval('seq_word');
64 INSERT INTO word VALUES (return_word_id, lookup_token, null,
65 'place', 'house', null, 0);
67 RETURN return_word_id;
73 CREATE OR REPLACE FUNCTION getorcreate_postcode_id(postcode TEXT)
79 return_word_id INTEGER;
81 lookup_word := upper(trim(postcode));
82 lookup_token := ' ' || make_standard_name(lookup_word);
83 SELECT min(word_id) FROM word
84 WHERE word_token = lookup_token and word = lookup_word
85 and class='place' and type='postcode'
87 IF return_word_id IS NULL THEN
88 return_word_id := nextval('seq_word');
89 INSERT INTO word VALUES (return_word_id, lookup_token, lookup_word,
90 'place', 'postcode', null, 0);
92 RETURN return_word_id;
98 CREATE OR REPLACE FUNCTION getorcreate_country(lookup_word TEXT,
99 lookup_country_code varchar(2))
104 return_word_id INTEGER;
106 lookup_token := ' '||trim(lookup_word);
107 SELECT min(word_id) FROM word
108 WHERE word_token = lookup_token and country_code=lookup_country_code
110 IF return_word_id IS NULL THEN
111 return_word_id := nextval('seq_word');
112 INSERT INTO word VALUES (return_word_id, lookup_token, null,
113 null, null, lookup_country_code, 0);
115 RETURN return_word_id;
121 CREATE OR REPLACE FUNCTION getorcreate_amenity(lookup_word TEXT, normalized_word TEXT,
122 lookup_class text, lookup_type text)
127 return_word_id INTEGER;
129 lookup_token := ' '||trim(lookup_word);
130 SELECT min(word_id) FROM word
131 WHERE word_token = lookup_token and word = normalized_word
132 and class = lookup_class and type = lookup_type
134 IF return_word_id IS NULL THEN
135 return_word_id := nextval('seq_word');
136 INSERT INTO word VALUES (return_word_id, lookup_token, normalized_word,
137 lookup_class, lookup_type, null, 0);
139 RETURN return_word_id;
145 CREATE OR REPLACE FUNCTION getorcreate_amenityoperator(lookup_word TEXT,
146 normalized_word TEXT,
154 return_word_id INTEGER;
156 lookup_token := ' '||trim(lookup_word);
157 SELECT min(word_id) FROM word
158 WHERE word_token = lookup_token and word = normalized_word
159 and class = lookup_class and type = lookup_type and operator = op
161 IF return_word_id IS NULL THEN
162 return_word_id := nextval('seq_word');
163 INSERT INTO word VALUES (return_word_id, lookup_token, normalized_word,
164 lookup_class, lookup_type, null, 0, op);
166 RETURN return_word_id;
172 CREATE OR REPLACE FUNCTION getorcreate_name_id(lookup_word TEXT, src_word TEXT)
177 nospace_lookup_token TEXT;
178 return_word_id INTEGER;
180 lookup_token := ' '||trim(lookup_word);
181 SELECT min(word_id) FROM word
182 WHERE word_token = lookup_token and class is null and type is null
184 IF return_word_id IS NULL THEN
185 return_word_id := nextval('seq_word');
186 INSERT INTO word VALUES (return_word_id, lookup_token, src_word,
187 null, null, null, 0);
189 RETURN return_word_id;
195 CREATE OR REPLACE FUNCTION getorcreate_name_id(lookup_word TEXT)
200 RETURN getorcreate_name_id(lookup_word, '');
205 -- Normalize a string and lookup its word ids (partial words).
206 CREATE OR REPLACE FUNCTION addr_ids_from_name(lookup_word TEXT)
212 return_word_id INTEGER[];
216 words := string_to_array(make_standard_name(lookup_word), ' ');
217 IF array_upper(words, 1) IS NOT NULL THEN
218 FOR j IN 1..array_upper(words, 1) LOOP
219 IF (words[j] != '') THEN
220 SELECT array_agg(word_id) INTO word_ids
222 WHERE word_token = words[j] and class is null and type is null;
224 IF word_ids IS NULL THEN
225 id := nextval('seq_word');
226 INSERT INTO word VALUES (id, words[j], null, null, null, null, 0);
227 return_word_id := return_word_id || id;
229 return_word_id := array_merge(return_word_id, word_ids);
235 RETURN return_word_id;
241 -- Normalize a string and look up its name ids (full words).
242 CREATE OR REPLACE FUNCTION word_ids_from_name(lookup_word TEXT)
247 return_word_ids INTEGER[];
249 lookup_token := ' '|| make_standard_name(lookup_word);
250 SELECT array_agg(word_id) FROM word
251 WHERE word_token = lookup_token and class is null and type is null
252 INTO return_word_ids;
253 RETURN return_word_ids;
256 LANGUAGE plpgsql STABLE STRICT;
259 CREATE OR REPLACE FUNCTION create_country(src HSTORE, country_code varchar(2))
269 FOR item IN SELECT (each(src)).* LOOP
271 s := make_standard_name(item.value);
272 w := getorcreate_country(s, country_code);
274 words := regexp_split_to_array(item.value, E'[,;()]');
275 IF array_upper(words, 1) != 1 THEN
276 FOR j IN 1..array_upper(words, 1) LOOP
277 s := make_standard_name(words[j]);
279 w := getorcreate_country(s, country_code);
289 CREATE OR REPLACE FUNCTION make_keywords(src HSTORE)
300 result := '{}'::INTEGER[];
302 FOR item IN SELECT (each(src)).* LOOP
304 s := make_standard_name(item.value);
305 w := getorcreate_name_id(s, item.value);
307 IF not(ARRAY[w] <@ result) THEN
308 result := result || w;
311 w := getorcreate_word_id(s);
313 IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
314 result := result || w;
317 words := string_to_array(s, ' ');
318 IF array_upper(words, 1) IS NOT NULL THEN
319 FOR j IN 1..array_upper(words, 1) LOOP
320 IF (words[j] != '') THEN
321 w = getorcreate_word_id(words[j]);
322 IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
323 result := result || w;
329 words := regexp_split_to_array(item.value, E'[,;()]');
330 IF array_upper(words, 1) != 1 THEN
331 FOR j IN 1..array_upper(words, 1) LOOP
332 s := make_standard_name(words[j]);
334 w := getorcreate_word_id(s);
335 IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
336 result := result || w;
342 s := regexp_replace(item.value, '市$', '');
343 IF s != item.value THEN
344 s := make_standard_name(s);
346 w := getorcreate_name_id(s, item.value);
347 IF NOT (ARRAY[w] <@ result) THEN
348 result := result || w;
361 CREATE OR REPLACE FUNCTION make_keywords(src TEXT)
372 result := '{}'::INTEGER[];
374 s := make_standard_name(src);
375 w := getorcreate_name_id(s, src);
377 IF NOT (ARRAY[w] <@ result) THEN
378 result := result || w;
381 w := getorcreate_word_id(s);
383 IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
384 result := result || w;
387 words := string_to_array(s, ' ');
388 IF array_upper(words, 1) IS NOT NULL THEN
389 FOR j IN 1..array_upper(words, 1) LOOP
390 IF (words[j] != '') THEN
391 w = getorcreate_word_id(words[j]);
392 IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
393 result := result || w;
399 words := regexp_split_to_array(src, E'[,;()]');
400 IF array_upper(words, 1) != 1 THEN
401 FOR j IN 1..array_upper(words, 1) LOOP
402 s := make_standard_name(words[j]);
404 w := getorcreate_word_id(s);
405 IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
406 result := result || w;
412 s := regexp_replace(src, '市$', '');
414 s := make_standard_name(s);
416 w := getorcreate_name_id(s, src);
417 IF NOT (ARRAY[w] <@ result) THEN
418 result := result || w;
429 CREATE OR REPLACE FUNCTION create_poi_search_terms(obj_place_id BIGINT,
430 in_partition SMALLINT,
431 parent_place_id BIGINT,
435 initial_name_vector INTEGER[],
437 OUT name_vector INTEGER[],
438 OUT nameaddress_vector INTEGER[])
441 parent_name_vector INTEGER[];
442 parent_address_vector INTEGER[];
443 addr_place_ids INTEGER[];
446 parent_address_place_ids BIGINT[];
447 filtered_address HSTORE;
449 nameaddress_vector := '{}'::INTEGER[];
451 SELECT s.name_vector, s.nameaddress_vector
452 INTO parent_name_vector, parent_address_vector
454 WHERE s.place_id = parent_place_id;
456 -- Find all address tags that don't appear in the parent search names.
457 SELECT hstore(array_agg(ARRAY[k, v])) INTO filtered_address
458 FROM (SELECT skeys(address) as k, svals(address) as v) a
459 WHERE not addr_ids_from_name(v) && parent_address_vector
460 AND k not in ('country', 'street', 'place', 'postcode',
461 'housenumber', 'streetnumber', 'conscriptionnumber');
463 -- Compute all search terms from the addr: tags.
464 IF filtered_address IS NOT NULL THEN
467 get_places_for_addr_tags(in_partition, geometry, filtered_address, country)
469 IF addr_item.place_id is null THEN
470 nameaddress_vector := array_merge(nameaddress_vector,
475 IF parent_address_place_ids is null THEN
476 SELECT array_agg(parent_place_id) INTO parent_address_place_ids
477 FROM place_addressline
478 WHERE place_id = parent_place_id;
481 IF not parent_address_place_ids @> ARRAY[addr_item.place_id] THEN
482 nameaddress_vector := array_merge(nameaddress_vector,
485 INSERT INTO place_addressline (place_id, address_place_id, fromarea,
486 isaddress, distance, cached_rank_address)
487 VALUES (obj_place_id, addr_item.place_id, not addr_item.isguess,
488 true, addr_item.distance, addr_item.rank_address);
493 name_vector := initial_name_vector;
495 -- Check if the parent covers all address terms.
496 -- If not, create a search name entry with the house number as the name.
497 -- This is unusual for the search_name table but prevents that the place
498 -- is returned when we only search for the street/place.
500 IF housenumber is not null and not nameaddress_vector <@ parent_address_vector THEN
501 name_vector := array_merge(name_vector,
502 ARRAY[getorcreate_housenumber_id(make_standard_name(housenumber))]);
505 IF not address ? 'street' and address ? 'place' THEN
506 addr_place_ids := addr_ids_from_name(address->'place');
507 IF not addr_place_ids <@ parent_name_vector THEN
508 -- make sure addr:place terms are always searchable
509 nameaddress_vector := array_merge(nameaddress_vector, addr_place_ids);
510 -- If there is a housenumber, also add the place name as a name,
511 -- so we can search it by the usual housenumber+place algorithms.
512 IF housenumber is not null THEN
513 name_vector := array_merge(name_vector,
514 ARRAY[getorcreate_name_id(make_standard_name(address->'place'))]);
519 -- Cheating here by not recomputing all terms but simply using the ones
520 -- from the parent object.
521 nameaddress_vector := array_merge(nameaddress_vector, parent_name_vector);
522 nameaddress_vector := array_merge(nameaddress_vector, parent_address_vector);