X-Git-Url: https://git.openstreetmap.org/nominatim.git/blobdiff_plain/27af9b102c2d6167b9025d594f8cb75e4dd76a03..fd3dec8efebd202352f20cbfebb36d955e0198c4:/lib-php/ReverseGeocode.php

diff --git a/lib-php/ReverseGeocode.php b/lib-php/ReverseGeocode.php
index 64fc214e..d12e4da3 100644
--- a/lib-php/ReverseGeocode.php
+++ b/lib-php/ReverseGeocode.php
@@ -1,4 +1,12 @@
 <?php
+/**
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ * This file is part of Nominatim. (https://nominatim.org)
+ *
+ * Copyright (C) 2022 by the Nominatim developer community.
+ * For a full list of authors see the git log.
+ */
 
 namespace Nominatim;
 
@@ -56,12 +64,15 @@ class ReverseGeocode
     {
         Debug::newFunction('lookupInterpolation');
         $sSQL = 'SELECT place_id, parent_place_id, 30 as rank_search,';
-        $sSQL .= '  ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction,';
-        $sSQL .= '  startnumber, endnumber, interpolationtype,';
+        $sSQL .= '  (CASE WHEN endnumber != startnumber';
+        $sSQL .= '        THEN (endnumber - startnumber) * ST_LineLocatePoint(linegeo,'.$sPointSQL.')';
+        $sSQL .= '        ELSE startnumber END) as fhnr,';
+        $sSQL .= '  startnumber, endnumber, step,';
         $sSQL .= '  ST_Distance(linegeo,'.$sPointSQL.') as distance';
         $sSQL .= ' FROM location_property_osmline';
         $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')';
-        $sSQL .= ' and indexed_status = 0 and startnumber is not NULL ';
+        $sSQL .= '       and indexed_status = 0 and startnumber is not NULL ';
+        $sSQL .= '       and parent_place_id != 0';
         $sSQL .= ' ORDER BY distance ASC limit 1';
         Debug::printSQL($sSQL);
 
@@ -111,6 +122,7 @@ class ReverseGeocode
                 $sSQL .= ' FROM placex';
                 $sSQL .= ' WHERE osm_type = \'N\'';
                 $sSQL .= ' AND country_code = \''.$sCountryCode.'\'';
+                $sSQL .= ' AND rank_search < 26 '; // needed to select right index
                 $sSQL .= ' AND rank_search between 5 and ' .min(25, $iMaxRank);
                 $sSQL .= ' AND class = \'place\' AND type != \'postcode\'';
                 $sSQL .= ' AND name IS NOT NULL ';
@@ -177,14 +189,16 @@ class ReverseGeocode
         $sSQL .= '(select place_id, parent_place_id, rank_address, rank_search, country_code, geometry';
         $sSQL .= ' FROM placex';
         $sSQL .= ' WHERE ST_GeometryType(geometry) in (\'ST_Polygon\', \'ST_MultiPolygon\')';
-        $sSQL .= ' AND rank_address Between 5 AND ' .$iMaxRank;
+        // Ensure that query planner doesn't use the index on rank_search.
+        $sSQL .= ' AND coalesce(rank_search, 0) between 5 and ' .$iMaxRank;
+        $sSQL .= ' AND rank_address between 4 and 25'; // needed for index selection
         $sSQL .= ' AND geometry && '.$sPointSQL;
         $sSQL .= ' AND type != \'postcode\' ';
         $sSQL .= ' AND name is not null';
         $sSQL .= ' AND indexed_status = 0 and linked_place_id is null';
-        $sSQL .= ' ORDER BY rank_address DESC LIMIT 50 ) as a';
-        $sSQL .= ' WHERE ST_CONTAINS(geometry, '.$sPointSQL.' )';
-        $sSQL .= ' ORDER BY rank_address DESC LIMIT 1';
+        $sSQL .= ' ORDER BY rank_search DESC LIMIT 50 ) as a';
+        $sSQL .= ' WHERE ST_Contains(geometry, '.$sPointSQL.' )';
+        $sSQL .= ' ORDER BY rank_search DESC LIMIT 1';
         Debug::printSQL($sSQL);
 
         $aPoly = $this->oDB->getRow($sSQL, null, 'Could not determine polygon containing the point.');
@@ -196,7 +210,7 @@ class ReverseGeocode
             $iRankSearch = $aPoly['rank_search'];
             $iPlaceID = $aPoly['place_id'];
 
-            if ($iRankAddress != $iMaxRank) {
+            if ($iRankSearch != $iMaxRank) {
                 $sSQL = 'SELECT place_id FROM ';
                 $sSQL .= '(SELECT place_id, rank_search, country_code, geometry,';
                 $sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance';
@@ -206,6 +220,7 @@ class ReverseGeocode
                 // for place nodes at rank_address 16
                 $sSQL .= ' AND rank_search > '.$iRankSearch;
                 $sSQL .= ' AND rank_search <= '.$iMaxRank;
+                $sSQL .= ' AND rank_search < 26 '; // needed to select right index
                 $sSQL .= ' AND rank_address > 0';
                 $sSQL .= ' AND class = \'place\'';
                 $sSQL .= ' AND type != \'postcode\'';
@@ -243,26 +258,24 @@ class ReverseGeocode
     public function lookupPoint($sPointSQL, $bDoInterpolation = true)
     {
         Debug::newFunction('lookupPoint');
-        // starts if the search is on POI or street level,
-        // searches for the nearest POI or street,
-        // if a street is found and a POI is searched for,
-        // the nearest POI which the found street is a parent of is choosen.
-        $iMaxRank = $this->iMaxRank;
-
         // Find the nearest point
         $fSearchDiam = 0.006;
         $oResult = null;
         $aPlace = null;
 
         // for POI or street level
-        if ($iMaxRank >= 26) {
+        if ($this->iMaxRank >= 26) {
+            // starts if the search is on POI or street level,
+            // searches for the nearest POI or street,
+            // if a street is found and a POI is searched for,
+            // the nearest POI which the found street is a parent of is chosen.
             $sSQL = 'select place_id,parent_place_id,rank_address,country_code,';
             $sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance';
             $sSQL .= ' FROM ';
             $sSQL .= ' placex';
             $sSQL .= '   WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
             $sSQL .= '   AND';
-            $sSQL .= ' rank_address between 26 and '.$iMaxRank;
+            $sSQL .= ' rank_address between 26 and '.$this->iMaxRank;
             $sSQL .= ' and (name is not null or housenumber is not null';
             $sSQL .= ' or rank_address between 26 and 27)';
             $sSQL .= ' and (rank_address between 26 and 27';
@@ -285,7 +298,7 @@ class ReverseGeocode
 
             if ($aPlace) {
                 // if street and maxrank > streetlevel
-                if ($iRankAddress <= 27 && $iMaxRank > 27) {
+                if ($iRankAddress <= 27 && $this->iMaxRank > 27) {
                     // find the closest object (up to a certain radius) of which the street is a parent of
                     $sSQL = ' select place_id,';
                     $sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance';
@@ -319,9 +332,9 @@ class ReverseGeocode
                     && $this->iMaxRank >= 28
                 ) {
                     $sSQL = 'SELECT place_id,parent_place_id,30 as rank_search,';
-                    $sSQL .= 'ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction,';
-                    $sSQL .= 'ST_distance('.$sPointSQL.', linegeo) as distance,';
-                    $sSQL .= 'startnumber,endnumber,interpolationtype';
+                    $sSQL .= '      (endnumber - startnumber) * ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fhnr,';
+                    $sSQL .= '      startnumber, endnumber, step,';
+                    $sSQL .= '      ST_Distance('.$sPointSQL.', linegeo) as distance';
                     $sSQL .= ' FROM location_property_tiger WHERE parent_place_id = '.$oResult->iId;
                     $sSQL .= ' AND ST_DWithin('.$sPointSQL.', linegeo, 0.001)';
                     $sSQL .= ' ORDER BY distance ASC limit 1';
@@ -333,19 +346,23 @@ class ReverseGeocode
                     if ($aPlaceTiger) {
                         $aPlace = $aPlaceTiger;
                         $oResult = new Result($aPlaceTiger['place_id'], Result::TABLE_TIGER);
-                        $oResult->iHouseNumber = closestHouseNumber($aPlaceTiger);
+                        $iRndNum = max(0, round($aPlaceTiger['fhnr'] / $aPlaceTiger['step']) * $aPlaceTiger['step']);
+                        $oResult->iHouseNumber = $aPlaceTiger['startnumber'] + $iRndNum;
+                        if ($oResult->iHouseNumber > $aPlaceTiger['endnumber']) {
+                            $oResult->iHouseNumber = $aPlaceTiger['endnumber'];
+                        }
                         $iRankAddress = 30;
                     }
                 }
             }
 
-            if ($bDoInterpolation && $iMaxRank >= 30) {
+            if ($bDoInterpolation && $this->iMaxRank >= 30) {
                 $fDistance = $fSearchDiam;
                 if ($aPlace) {
                     // We can't reliably go from the closest street to an
                     // interpolation line because the closest interpolation
                     // may have a different street segments as a parent.
-                    // Therefore allow an interpolation line to take precendence
+                    // Therefore allow an interpolation line to take precedence
                     // even when the street is closer.
                     $fDistance = $iRankAddress < 28 ? 0.001 : $aPlace['distance'];
                 }
@@ -355,7 +372,11 @@ class ReverseGeocode
 
                 if ($aHouse) {
                     $oResult = new Result($aHouse['place_id'], Result::TABLE_OSMLINE);
-                    $oResult->iHouseNumber = closestHouseNumber($aHouse);
+                    $iRndNum = max(0, round($aHouse['fhnr'] / $aHouse['step']) * $aHouse['step']);
+                    $oResult->iHouseNumber = $aHouse['startnumber'] + $iRndNum;
+                    if ($oResult->iHouseNumber > $aHouse['endnumber']) {
+                        $oResult->iHouseNumber = $aHouse['endnumber'];
+                    }
                     $aPlace = $aHouse;
                 }
             }
@@ -366,7 +387,7 @@ class ReverseGeocode
             }
         } else {
             // lower than street level ($iMaxRank < 26 )
-            $oResult = $this->lookupLargeArea($sPointSQL, $iMaxRank);
+            $oResult = $this->lookupLargeArea($sPointSQL, $this->iMaxRank);
         }
 
         Debug::printVar('Final result', $oResult);