X-Git-Url: https://git.openstreetmap.org/nominatim.git/blobdiff_plain/f542d65da63cea44b2059913c4bb1c6550506449..f2b2b2b92ca87fdf6ae8fcd7062db76ff4c42f51:/nominatim/tokenizer/icu_tokenizer.py diff --git a/nominatim/tokenizer/icu_tokenizer.py b/nominatim/tokenizer/icu_tokenizer.py index 5a90edf5..9032d71b 100644 --- a/nominatim/tokenizer/icu_tokenizer.py +++ b/nominatim/tokenizer/icu_tokenizer.py @@ -104,7 +104,7 @@ class ICUTokenizer(AbstractTokenizer): self.init_from_project(config) - def update_statistics(self, config: Configuration) -> None: + def update_statistics(self, config: Configuration, threads: int = 2) -> None: """ Recompute frequencies for all name words. """ with connect(self.dsn) as conn: @@ -112,22 +112,92 @@ class ICUTokenizer(AbstractTokenizer): return with conn.cursor() as cur: - LOG.info('Computing word frequencies') - cur.drop_table('word_frequencies') - cur.execute("""CREATE TEMP TABLE word_frequencies AS - SELECT unnest(name_vector) as id, count(*) - FROM search_name GROUP BY id""") - cur.execute('CREATE INDEX ON word_frequencies(id)') - LOG.info('Update word table with recomputed frequencies') - cur.drop_table('tmp_word') - cur.execute("""CREATE TABLE tmp_word AS - SELECT word_id, word_token, type, word, - (CASE WHEN wf.count is null THEN info - ELSE info || jsonb_build_object('count', wf.count) - END) as info - FROM word LEFT JOIN word_frequencies wf - ON word.word_id = wf.id""") - cur.drop_table('word_frequencies') + cur.execute('ANALYSE search_name') + if threads > 1: + cur.execute('SET max_parallel_workers_per_gather TO %s', + (min(threads, 6),)) + + if conn.server_version_tuple() < (12, 0): + LOG.info('Computing word frequencies') + cur.drop_table('word_frequencies') + cur.drop_table('addressword_frequencies') + cur.execute("""CREATE TEMP TABLE word_frequencies AS + SELECT unnest(name_vector) as id, count(*) + FROM search_name GROUP BY id""") + cur.execute('CREATE INDEX ON word_frequencies(id)') + cur.execute("""CREATE TEMP TABLE addressword_frequencies AS + SELECT unnest(nameaddress_vector) as id, count(*) + FROM search_name GROUP BY id""") + cur.execute('CREATE INDEX ON addressword_frequencies(id)') + cur.execute("""CREATE OR REPLACE FUNCTION word_freq_update(wid INTEGER, + INOUT info JSONB) + AS $$ + DECLARE rec RECORD; + BEGIN + IF info is null THEN + info = '{}'::jsonb; + END IF; + FOR rec IN SELECT count FROM word_frequencies WHERE id = wid + LOOP + info = info || jsonb_build_object('count', rec.count); + END LOOP; + FOR rec IN SELECT count FROM addressword_frequencies WHERE id = wid + LOOP + info = info || jsonb_build_object('addr_count', rec.count); + END LOOP; + IF info = '{}'::jsonb THEN + info = null; + END IF; + END; + $$ LANGUAGE plpgsql IMMUTABLE; + """) + LOG.info('Update word table with recomputed frequencies') + cur.drop_table('tmp_word') + cur.execute("""CREATE TABLE tmp_word AS + SELECT word_id, word_token, type, word, + word_freq_update(word_id, info) as info + FROM word + """) + cur.drop_table('word_frequencies') + cur.drop_table('addressword_frequencies') + else: + LOG.info('Computing word frequencies') + cur.drop_table('word_frequencies') + cur.execute('ANALYSE search_name') + cur.execute('ANALYSE word') + cur.execute(""" + CREATE TEMP TABLE word_frequencies AS + WITH word_freq AS MATERIALIZED ( + SELECT unnest(name_vector) as id, count(*) + FROM search_name GROUP BY id), + addr_freq AS MATERIALIZED ( + SELECT unnest(nameaddress_vector) as id, count(*) + FROM search_name GROUP BY id) + SELECT coalesce(a.id, w.id) as id, + (CASE WHEN w.count is null THEN '{}'::JSONB + ELSE jsonb_build_object('count', w.count) END + || + CASE WHEN a.count is null THEN '{}'::JSONB + ELSE jsonb_build_object('addr_count', a.count) END) as info + FROM word_freq w FULL JOIN addr_freq a ON a.id = w.id; + """) + cur.execute('CREATE UNIQUE INDEX ON word_frequencies(id) INCLUDE(info)') + cur.execute('ANALYSE word_frequencies') + LOG.info('Update word table with recomputed frequencies') + cur.drop_table('tmp_word') + cur.execute("""CREATE TABLE tmp_word AS + SELECT word_id, word_token, type, word, + (CASE WHEN wf.info is null THEN word.info + ELSE coalesce(word.info, '{}'::jsonb) || wf.info + END) as info + FROM word LEFT JOIN word_frequencies wf + ON word.word_id = wf.id + ORDER BY word_id + """) + cur.drop_table('word_frequencies') + + with conn.cursor() as cur: + cur.execute('SET max_parallel_workers_per_gather TO 0') sqlp = SQLPreprocessor(conn, config) sqlp.run_string(conn, @@ -214,19 +284,20 @@ class ICUTokenizer(AbstractTokenizer): return list(s[0].split('@')[0] for s in cur) - def _install_php(self, phpdir: Path, overwrite: bool = True) -> None: + def _install_php(self, phpdir: Optional[Path], overwrite: bool = True) -> None: """ Install the php script for the tokenizer. """ - assert self.loader is not None - php_file = self.data_dir / "tokenizer.php" + if phpdir is not None: + assert self.loader is not None + php_file = self.data_dir / "tokenizer.php" - if not php_file.exists() or overwrite: - php_file.write_text(dedent(f"""\ - None: @@ -285,7 +356,7 @@ class ICUTokenizer(AbstractTokenizer): def _create_lookup_indices(self, config: Configuration, table_name: str) -> None: - """ Create addtional indexes used when running the API. + """ Create additional indexes used when running the API. """ with connect(self.dsn) as conn: sqlp = SQLPreprocessor(conn, config)