mirror of
https://github.com/osm-search/Nominatim.git
synced 2024-11-23 05:35:13 +03:00
calculate importance from wikipedia
This commit is contained in:
Brian Quinion
parent
709ab1bb03
commit
1c0fa81d88
@ -1225,6 +1225,10 @@ DECLARE
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name_vector INTEGER[];
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nameaddress_vector INTEGER[];
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wiki_article TEXT;
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wiki_article_title TEXT;
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wiki_article_language TEXT;
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result BOOLEAN;
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BEGIN
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@ -1308,6 +1312,34 @@ BEGIN
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address_havelevel[i] := false;
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END LOOP;
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NEW.importance := null;
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-- WARNING: see duplicate of code below (yuk!)
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IF NEW.extratags?'wikipedia' THEN
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wiki_article := replace(regexp_replace(NEW.extratags->'wikipedia',E'(.*?)([a-z]+).wikipedia.org/wiki/',E'\\2:'),' ','_');
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wiki_article_title := split_part(wiki_article, ':', 2);
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IF wiki_article_title IS NULL OR wiki_article_title = '' THEN
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wiki_article_title := wiki_article;
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wiki_article_language := 'en';
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ELSE
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wiki_article_language := lower(split_part(wiki_article, ':', 1));
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END IF;
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--RAISE WARNING '% %', wiki_article_language, wiki_article_title;
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select wikipedia_article.importance,wikipedia_article.language||':'||wikipedia_article.title
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from wikipedia_article
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where language = wiki_article_language and
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(title = wiki_article_title OR title = decode_url_part(wiki_article_title) OR title = replace(decode_url_part(wiki_article_title),E'\\',''))
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UNION ALL
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select wikipedia_article.importance,wikipedia_article.language||':'||wikipedia_article.title
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from wikipedia_redirect join wikipedia_article on (wikipedia_redirect.language = wikipedia_article.language and wikipedia_redirect.to_title = wikipedia_article.title)
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where wikipedia_redirect.language = wiki_article_language and
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(from_title = wiki_article_title OR from_title = decode_url_part(wiki_article_title) OR from_title = replace(decode_url_part(wiki_article_title),E'\\',''))
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order by importance asc limit 1 INTO NEW.importance,NEW.wikipedia;
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ELSE
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select importance,language||':'||title from wikipedia_article where osm_type = NEW.osm_type and osm_id = NEW.osm_id order by importance asc limit 1 INTO NEW.importance,NEW.wikipedia;
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END IF;
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--RAISE WARNING '% %', NEW.place_id, NEW.rank_search;
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-- For low level elements we inherit from our parent road
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@ -1535,7 +1567,7 @@ BEGIN
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END IF;
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-- not found one yet? how about doing a name search
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IF NEW.centroid IS NULL AND NEW.name->'name' is not null and make_standard_name(NEW.name->'name') != '' THEN
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IF NEW.centroid IS NULL AND (NEW.name->'name') is not null and make_standard_name(NEW.name->'name') != '' THEN
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FOR linkedPlacex IN select placex.* from placex WHERE
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make_standard_name(name->'name') = make_standard_name(NEW.name->'name')
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@ -1567,6 +1599,31 @@ BEGIN
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place_centroid := NEW.centroid;
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END IF;
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-- Did we gain a wikipedia tag in the process? then we need to recalculate our importance
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-- WARNING: duplicate of code above (yuk!)
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IF NEW.importance is null AND NEW.extratags?'wikipedia' THEN
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wiki_article := replace(regexp_replace(NEW.extratags->'wikipedia',E'(.*?)([a-z]+).wikipedia.org/wiki/',E'\\2:'),' ','_');
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wiki_article_title := split_part(wiki_article, ':', 2);
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IF wiki_article_title IS NULL OR wiki_article_title = '' THEN
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wiki_article_title := wiki_article;
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wiki_article_language := 'en';
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ELSE
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wiki_article_language := lower(split_part(wiki_article, ':', 1));
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END IF;
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select wikipedia_article.importance,wikipedia_article.language||':'||wikipedia_article.title
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from wikipedia_article
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where language = wiki_article_language and
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(title = wiki_article_title OR title = decode_url_part(wiki_article_title) OR title = replace(decode_url_part(wiki_article_title),E'\\',''))
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UNION ALL
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select wikipedia_article.importance,wikipedia_article.language||':'||wikipedia_article.title
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from wikipedia_redirect join wikipedia_article on (wikipedia_redirect.language = wikipedia_article.language and wikipedia_redirect.to_title = wikipedia_article.title)
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where wikipedia_redirect.language = wiki_article_language and
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(from_title = wiki_article_title OR from_title = decode_url_part(wiki_article_title) OR from_title = replace(decode_url_part(wiki_article_title),E'\\',''))
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order by importance asc limit 1 INTO NEW.importance,NEW.wikipedia;
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END IF;
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END IF;
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NEW.parent_place_id = 0;
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@ -2706,4 +2763,10 @@ END;
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$$
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LANGUAGE plpgsql;
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-- See: http://stackoverflow.com/questions/6410088/how-can-i-mimic-the-php-urldecode-function-in-postgresql
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CREATE OR REPLACE FUNCTION decode_url_part(p varchar) RETURNS varchar
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AS $$
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SELECT convert_from(CAST(E'\\x' || string_agg(CASE WHEN length(r.m[1]) = 1 THEN encode(convert_to(r.m[1], 'SQL_ASCII'), 'hex') ELSE substring(r.m[1] from 2 for 2) END, '') AS bytea), 'UTF8')
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FROM regexp_matches($1, '%[0-9a-f][0-9a-f]|.', 'gi') AS r(m);
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$$
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LANGUAGE SQL IMMUTABLE STRICT;
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@ -210,6 +210,7 @@ CREATE TABLE placex (
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importance FLOAT,
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indexed_status INTEGER,
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indexed_date TIMESTAMP,
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wikipedia TEXT, -- calculated wikipedia article name (language:title)
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geometry_sector INTEGER
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);
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SELECT AddGeometryColumn('placex', 'geometry', 4326, 'GEOMETRY', 2);
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@ -301,3 +302,28 @@ CREATE INDEX idx_import_polygon_delete_osmid ON import_polygon_delete USING BTRE
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drop sequence file;
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CREATE SEQUENCE file start 1;
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-- null table so it won't error
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-- deliberately no drop - importing the table is expensive and static, if it is already there better to avoid removing it
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CREATE TABLE wikipedia_article (
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language text NOT NULL,
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title text NOT NULL,
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langcount integer,
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othercount integer,
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totalcount integer,
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lat double precision,
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lon double precision,
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importance double precision,
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osm_type character(1),
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osm_id bigint
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);
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ALTER TABLE ONLY wikipedia_article ADD CONSTRAINT wikipedia_article_pkey PRIMARY KEY (language, title);
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CREATE INDEX idx_wikipedia_article_osm_id ON wikipedia_article USING btree (osm_type, osm_id);
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CREATE TABLE wikipedia_redirect (
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language text,
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from_title text,
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to_title text
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);
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ALTER TABLE ONLY wikipedia_redirect ADD CONSTRAINT wikipedia_redirect_pkey PRIMARY KEY (language, from_title);
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@ -23,6 +23,7 @@
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array('create-minimal-tables', '', 0, 1, 0, 0, 'bool', 'Create minimal main tables'),
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array('create-tables', '', 0, 1, 0, 0, 'bool', 'Create main tables'),
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array('create-partitions', '', 0, 1, 0, 0, 'bool', 'Create required partition tables and triggers'),
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array('import-wikipedia-articles', '', 0, 1, 0, 0, 'bool', 'Import wikipedia article dump'),
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array('load-data', '', 0, 1, 0, 0, 'bool', 'Copy data to live tables from import table'),
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array('import-tiger-data', '', 0, 1, 0, 0, 'bool', 'Import tiger data (not included in \'all\')'),
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array('calculate-postcodes', '', 0, 1, 0, 0, 'bool', 'Calculate postcode centroids'),
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@ -207,6 +208,34 @@
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pgsqlRunScript($sTemplate);
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}
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if ($aCMDResult['import-wikipedia-articles'] || $aCMDResult['all'])
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{
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$bDidSomething = true;
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$sWikiArticlesFile = CONST_BasePath.'/data/wikipedia_article.sql.bin';
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$sWikiRedirectsFile = CONST_BasePath.'/data/wikipedia_redirect.sql.bin';
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if (file_exists($sWikiArticlesFile))
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{
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echo "Importing wikipedia articles...";
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pgsqlRunRestoreData($sWikiArticlesFile);
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echo "...done\n";
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}
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else
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{
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echo "WARNING: wikipedia article dump file not found - places will have default importance\n";
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}
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if (file_exists($sWikiRedirectsFile))
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{
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echo "Importing wikipedia redirects...";
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pgsqlRunRestoreData($sWikiRedirectsFile);
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echo "...done\n";
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}
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else
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{
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echo "WARNING: wikipedia redirect dump file not found - some place importance values may be missing\n";
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}
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}
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if ($aCMDResult['load-data'] || $aCMDResult['all'])
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{
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echo "Load Data\n";
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@ -326,7 +355,7 @@
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}
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fclose($hFile);
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$bAnyBusy = true;
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while($bAnyBusy)
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{
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@ -451,7 +480,8 @@
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// Convert database DSN to psql paramaters
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$aDSNInfo = DB::parseDSN(CONST_Database_DSN);
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$sCMD = 'psql -f '.$sFilename.' '.$aDSNInfo['database'];
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if (!isset($aDSNInfo['port']) || !$aDSNInfo['port']) $aDSNInfo['port'] = 5432;
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$sCMD = 'psql -p '.$aDSNInfo['port'].' -d '.$aDSNInfo['database'].' -f '.$sFilename;
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$aDescriptors = array(
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0 => array('pipe', 'r'),
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@ -479,7 +509,7 @@
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// Convert database DSN to psql paramaters
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$aDSNInfo = DB::parseDSN(CONST_Database_DSN);
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if (!isset($aDSNInfo['port']) || !$aDSNInfo['port']) $aDSNInfo['port'] = 5432;
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$sCMD = 'psql -p '.$aDSNInfo['port'].' '.$aDSNInfo['database'];
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$sCMD = 'psql -p '.$aDSNInfo['port'].' -d '.$aDSNInfo['database'];
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$aDescriptors = array(
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0 => array('pipe', 'r'),
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1 => STDOUT,
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@ -497,3 +527,31 @@
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fclose($ahPipes[0]);
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proc_close($hProcess);
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}
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function pgsqlRunRestoreData($sDumpFile)
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{
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// Convert database DSN to psql paramaters
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$aDSNInfo = DB::parseDSN(CONST_Database_DSN);
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if (!isset($aDSNInfo['port']) || !$aDSNInfo['port']) $aDSNInfo['port'] = 5432;
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$sCMD = 'pg_restore -p '.$aDSNInfo['port'].' -d '.$aDSNInfo['database'].' -Fc -a '.$sDumpFile;
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$aDescriptors = array(
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0 => array('pipe', 'r'),
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1 => array('pipe', 'w'),
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2 => array('file', '/dev/null', 'a')
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);
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$ahPipes = null;
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$hProcess = proc_open($sCMD, $aDescriptors, $ahPipes);
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if (!is_resource($hProcess)) fail('unable to start pg_restore');
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fclose($ahPipes[0]);
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// TODO: error checking
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while(!feof($ahPipes[1]))
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{
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echo fread($ahPipes[1], 4096);
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}
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fclose($ahPipes[1]);
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proc_close($hProcess);
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}
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