better performance for place node search

[nominatim.git] / lib / ReverseGeocode.php

diff --git a/lib/ReverseGeocode.php b/lib/ReverseGeocode.php
index a1915c50ccb640a201d3d7579bfd0aa7ee175305..83f6c7e33105b5cb9840926902041d94e638767e 100644 (file)
--- a/lib/ReverseGeocode.php
+++ b/lib/ReverseGeocode.php
@@ -1,197 +1,221 @@
 <?php
 
 <?php
 

+namespace Nominatim;
+
+require_once(CONST_BasePath.'/lib/Result.php');
+

 class ReverseGeocode
 {
     protected $oDB;
     protected $iMaxRank = 28;
 
 class ReverseGeocode
 {
     protected $oDB;
     protected $iMaxRank = 28;
 

-    function ReverseGeocode(&$oDB)
+
+    public function __construct(&$oDB)

     {
         $this->oDB =& $oDB;
     }
 
     {
         $this->oDB =& $oDB;
     }
 

-    function setZoom($iZoom)
+
+    public function setZoom($iZoom)

     {
         // Zoom to rank, this could probably be calculated but a lookup gives fine control
         $aZoomRank = array(
     {
         // Zoom to rank, this could probably be calculated but a lookup gives fine control
         $aZoomRank = array(

-            0 => 2, // Continent / Sea
-            1 => 2,
-            2 => 2,
-            3 => 4, // Country
-            4 => 4,
-            5 => 8, // State
-            6 => 10, // Region
-            7 => 10,
-            8 => 12, // County
-            9 => 12,
-            10 => 17, // City
-            11 => 17,
-            12 => 18, // Town / Village
-            13 => 18,
-            14 => 22, // Suburb
-            15 => 22,
-            16 => 26, // Street, TODO: major street?
-            17 => 26,
-            18 => 30, // or >, Building
-            19 => 30, // or >, Building
-            );
+                      0 => 2, // Continent / Sea
+                      1 => 2,
+                      2 => 2,
+                      3 => 4, // Country
+                      4 => 4,
+                      5 => 8, // State
+                      6 => 10, // Region
+                      7 => 10,
+                      8 => 12, // County
+                      9 => 12,
+                      10 => 17, // City
+                      11 => 17,
+                      12 => 18, // Town / Village
+                      13 => 18,
+                      14 => 22, // Suburb
+                      15 => 22,
+                      16 => 26, // Street, TODO: major street?
+                      17 => 26,
+                      18 => 30, // or >, Building
+                      19 => 30, // or >, Building
+                     );

         $this->iMaxRank = (isset($iZoom) && isset($aZoomRank[$iZoom]))?$aZoomRank[$iZoom]:28;
     }
 
         $this->iMaxRank = (isset($iZoom) && isset($aZoomRank[$iZoom]))?$aZoomRank[$iZoom]:28;
     }
 

-    // returns { place_id =>, type => '(osm|tiger)' }
-    // fails if no place was found
-    function lookup($fLat, $fLon, $bDoInterpolation = true)
+    /**
+     * Find the closest interpolation with the given search diameter.
+     *
+     * @param string $sPointSQL   Reverse geocoding point as SQL
+     * @param float  $fSearchDiam Search diameter
+     *
+     * @return Record of the interpolation or null.
+     */
+    protected function lookupInterpolation($sPointSQL, $fSearchDiam)

     {
     {

-        $sPointSQL = 'ST_SetSRID(ST_Point('.$fLon.','.$fLat.'),4326)';
+        $sSQL = 'SELECT place_id, parent_place_id, 30 as rank_search,';
+        $sSQL .= '  ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction,';
+        $sSQL .= '  startnumber, endnumber, interpolationtype,';
+        $sSQL .= '  ST_Distance(linegeo,'.$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 .= ' ORDER BY distance ASC limit 1';
+
+        return chksql(
+            $this->oDB->getRow($sSQL),
+            'Could not determine closest housenumber on an osm interpolation line.'
+        );
+    }
+    
+    protected function lookupPolygon($sPointSQL, $iMaxRank)
+    {
+        $sSQL = 'select place_id,parent_place_id,rank_search,country_code, geometry';
+        $sSQL .= ' FROM placex';
+        $sSQL .= ' WHERE ST_GeometryType(geometry) in (\'ST_Polygon\',\'ST_MultiPolygon\')';
+        $sSQL .= ' AND rank_search <= LEAST(25, '.$iMaxRank.')';
+        $sSQL .= ' AND ST_CONTAINS(geometry, '.$sPointSQL.' )';
+        $sSQL .= ' AND type != \'postcode\' ';
+        $sSQL .= ' AND name IS NOT NULL ';
+        $sSQL .= ' ORDER BY rank_search DESC LIMIT 1';
+
+        $aPoly = chksql(
+            $this->oDB->getRow($sSQL),
+            'Could not determine polygon containing the point.'
+        );
+        if ($aPoly) {
+            $iParentPlaceID = $aPoly['parent_place_id'];
+            $iRankSearch = $aPoly['rank_search'];
+            $iPlaceID = $aPoly['place_id'];
+            
+            $sSQL = 'select place_id,parent_place_id,rank_search,country_code, linked_place_id,';
+            $sSQL .='  ST_distance('.$sPointSQL.', geometry) as distance';
+            $sSQL .= ' FROM placex';
+            $sSQL .= ' WHERE osm_type = \'N\'';
+            $sSQL .= ' AND rank_search >= '.$iRankSearch;
+            $sSQL .= ' AND rank_search <= LEAST(25, '.$iMaxRank.')';
+            $sSQL .= ' AND ST_CONTAINS((SELECT geometry FROM placex WHERE place_id = '.$iPlaceID.'), geometry )';
+            $sSQL .= ' AND type != \'postcode\'';
+            $sSQL .= ' AND name IS NOT NULL ';
+            $sSQL .= ' AND class not in ( \'waterway\')';
+            $sSQL .= ' ORDER BY distance ASC,';
+            $sSQL .= ' rank_search DESC';
+            $sSQL .= ' limit 1';
+            if (CONST_Debug) var_dump($sSQL);
+            $aPlacNode = chksql(
+                $this->oDB->getRow($sSQL),
+                'Could not determine place node.'
+            );
+            if ($aPlacNode) {
+                return $aPlacNode;
+            }
+        }
+        return $aPoly;
+    }
+
+    public function lookup($fLat, $fLon, $bDoInterpolation = true)
+    {
+        return $this->lookupPoint(
+            'ST_SetSRID(ST_Point('.$fLon.','.$fLat.'),4326)',
+            $bDoInterpolation
+        );
+    }
+
+    public function lookupPoint($sPointSQL, $bDoInterpolation = true)
+    {
+        

         $iMaxRank = $this->iMaxRank;
 
         // Find the nearest point
         $iMaxRank = $this->iMaxRank;
 
         // Find the nearest point

-        $fSearchDiam = 0.0004;
-        $iPlaceID = null;
-        $aArea = false;
+        $fSearchDiam = 0.006;
+        $oResult = null;
+        $aPlace = null;

         $fMaxAreaDistance = 1;
         $fMaxAreaDistance = 1;

-        $bIsInUnitedStates = false;
-        $bPlaceIsTiger = false;
-        $bPlaceIsLine = false;
-        while (!$iPlaceID && $fSearchDiam < $fMaxAreaDistance) {
-            $fSearchDiam = $fSearchDiam * 2;
-
-            // If we have to expand the search area by a large amount then we need a larger feature
-            // then there is a limit to how small the feature should be
-            if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4;
-            if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8;
-            if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10;
-            if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12;
-            if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17;
-            if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18;
-            if ($fSearchDiam > 0.008 && $iMaxRank > 22) $iMaxRank = 22;
-            if ($fSearchDiam > 0.001 && $iMaxRank > 26) $iMaxRank = 26;
-
-            $sSQL = 'select place_id,parent_place_id,rank_search,calculated_country_code';
-            $sSQL .= ' FROM placex';
-            $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
-            $sSQL .= ' and rank_search != 28 and rank_search >= '.$iMaxRank;
-            $sSQL .= ' and (name is not null or housenumber is not null)';
+        $bIsTigerStreet = false;
+        
+        // for POI or street level
+        if ( $iMaxRank >= 26 ) {
+            
+            $sSQL = 'select place_id,parent_place_id,rank_search,country_code,';
+            $sSQL .= 'CASE WHEN ST_GeometryType(geometry) in (\'ST_Polygon\',\'ST_MultiPolygon\') THEN ST_distance('.$sPointSQL.', centroid)';
+            $sSQL .= ' ELSE ST_distance('.$sPointSQL.', geometry) ';
+            $sSQL .= ' END as distance';
+            $sSQL .= ' FROM ';
+            $sSQL .= ' placex';
+            $sSQL .= '   WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
+            $sSQL .= '   AND';
+            // only streets
+            if ($iMaxRank == 26) {
+                $sSQL .= ' rank_search != 28 and rank_search = 26';
+            } else {
+                $sSQL .= ' rank_search != 28 and rank_search >= 26';
+            }
+            $sSQL .= ' and (name is not null or housenumber is not null';
+            $sSQL .= '      or rank_search between 26 and 27)';
+            $sSQL .= ' and type not in (\'proposed\')';

             $sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';
             $sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';

-            $sSQL .= ' and indexed_status = 0 ';
+            $sSQL .= ' and indexed_status = 0 and linked_place_id is null';

             $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
             $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))';
             $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
             $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))';

-            $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', geometry) ASC limit 1';
+            $sSQL .= ' ORDER BY distance ASC limit 1';

             if (CONST_Debug) var_dump($sSQL);
             if (CONST_Debug) var_dump($sSQL);

-            $aPlace = chksql($this->oDB->getRow($sSQL),
-                             "Could not determine closest place.");
-            $iPlaceID = $aPlace['place_id'];
-            $iParentPlaceID = $aPlace['parent_place_id'];
-            $bIsInUnitedStates = ($aPlace['calculated_country_code'] == 'us');
-        }
-        // if a street or house was found, look in interpolation lines table
-        if ($bDoInterpolation && $this->iMaxRank >= 28 && $aPlace && $aPlace['rank_search'] >= 26) {
-            // if a house was found, search the interpolation line that is at least as close as the house
-            $sSQL = 'SELECT place_id, parent_place_id, 30 as rank_search, ST_line_locate_point(linegeo,'.$sPointSQL.') as fraction';
-            $sSQL .= ' FROM location_property_osmline';
-            $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')';
-            $sSQL .= ' and indexed_status = 0 ';
-            $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', linegeo) ASC limit 1';
+            $aPlace = chksql(
+                $this->oDB->getRow($sSQL),
+                'Could not determine closest place.'
+            );

             
             

-            if (CONST_Debug) {
-                $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL);
-                var_dump($sSQL);
-
-                $aAllHouses = chksql($this->oDB->getAll($sSQL));
-                foreach ($aAllHouses as $i) {
-                    echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "<br>\n";
-                }
-            }
-            $aPlaceLine = chksql($this->oDB->getRow($sSQL),
-                                 "Could not determine closest housenumber on an osm interpolation line.");
-            if ($aPlaceLine) {
-                if (CONST_Debug) var_dump('found housenumber in interpolation lines table', $aPlaceLine);
-                if ($aPlace['rank_search'] == 30) {
-                    // if a house was already found in placex, we have to find out, 
-                    // if the placex house or the interpolated house are closer to the searched point
-                    // distance between point and placex house
-                    $sSQL = 'SELECT ST_distance('.$sPointSQL.', house.geometry) as distance FROM placex as house WHERE house.place_id='.$iPlaceID;
-                    $aDistancePlacex = chksql($this->oDB->getRow($sSQL),
-                                              "Could not determine distance between searched point and placex house.");
-                    $fDistancePlacex = $aDistancePlacex['distance'];
-                    // distance between point and interpolated house (fraction on interpolation line)
-                    $sSQL = 'SELECT ST_distance('.$sPointSQL.', ST_LineInterpolatePoint(linegeo, '.$aPlaceLine['fraction'].')) as distance';
-                    $sSQL .= ' FROM location_property_osmline WHERE place_id = '.$aPlaceLine['place_id'];
-                    $aDistanceInterpolation = chksql($this->oDB->getRow($sSQL),
-                                                     "Could not determine distance between searched point and interpolated house.");
-                    $fDistanceInterpolation = $aDistanceInterpolation['distance'];
-                    if ($fDistanceInterpolation < $fDistancePlacex) {
-                        // interpolation is closer to point than placex house
-                        $bPlaceIsLine = true;
-                        $aPlace = $aPlaceLine;
-                        $iPlaceID = $aPlaceLine['place_id'];
-                        $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street
-                        $fFraction = $aPlaceLine['fraction'];
-                        $iMaxRank = 30;
+            if ($aPlace) {
+                    $iPlaceID = $aPlace['place_id'];
+                    $oResult = new Result($iPlaceID);
+                    $iParentPlaceID = $aPlace['parent_place_id'];
+                    // if street and maxrank > streetlevel
+                    if (($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27)&& $iMaxRank > 27 ) {
+                        // find the closest object (up to a certain radius) of which the street is a parent of
+                        $sSQL = ' select place_id,parent_place_id,rank_search,country_code,';
+                        $sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance';
+                        $sSQL .= ' FROM ';
+                        $sSQL .= ' placex';
+                        // radius ?
+                        $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, 0.003)';
+                        $sSQL .= ' AND parent_place_id = '.$iPlaceID;
+                        $sSQL .= ' and (name is not null or housenumber is not null)';
+                        $sSQL .= ' ORDER BY distance ASC limit 1';
+                        if (CONST_Debug) var_dump($sSQL);
+                        $aStreet = chksql(
+                            $this->oDB->getRow($sSQL),
+                            'Could not determine closest place.'
+                        );
+                        if ($aStreet) {
+                            $iPlaceID = $aStreet['place_id'];
+                            $oResult = new Result($iPlaceID);
+                            $iParentPlaceID = $aStreet['parent_place_id'];
+                        }
+                    } 
+                }else{
+                    $aPlace = $this->lookupPolygon($sPointSQL, $iMaxRank);
+                    if ($aPlace) {
+                        // if place node is found adress goes over linked_place_id
+                        if (!empty($aPlace['linked_place_id'])) {
+                            $oResult = new Result($aPlace['linked_place_id']);
+                        }else{
+                            $oResult = new Result($aPlace['place_id']);
+                        }

                     }
                     }

-                    // else: nothing to do, take placex house from above
-                } else {
-                    $bPlaceIsLine = true;
-                    $aPlace = $aPlaceLine;
-                    $iPlaceID = $aPlaceLine['place_id'];
-                    $iParentPlaceID = $aPlaceLine['parent_place_id']; // the street
-                    $fFraction = $aPlaceLine['fraction'];
-                    $iMaxRank = 30;

                 }
                 }

-            }
-        }
-        
-        // Only street found? If it's in the US we can check TIGER data for nearest housenumber
-        if (CONST_Use_US_Tiger_Data && $bDoInterpolation && $bIsInUnitedStates && $this->iMaxRank >= 28 && $iPlaceID && ($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27 )) {
-            $fSearchDiam = 0.001;
-            $sSQL = 'SELECT place_id,parent_place_id,30 as rank_search, ST_line_locate_point(linegeo,'.$sPointSQL.') as fraction';
-            //if (CONST_Debug) { $sSQL .= ', housenumber, ST_distance('.$sPointSQL.', centroid) as distance, st_y(centroid) as lat, st_x(centroid) as lon'; }
-            $sSQL .= ' FROM location_property_tiger WHERE parent_place_id = '.$iPlaceID;
-            $sSQL .= ' AND ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')';  //no centroid anymore in Tiger data, now we have lines
-            $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', linegeo) ASC limit 1';
-
-            if (CONST_Debug) {
-                $sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL);
-                var_dump($sSQL);
-
-                $aAllHouses = chksql($this->oDB->getAll($sSQL));
-                foreach ($aAllHouses as $i) {
-                    echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "<br>\n";
+            // lower than street level ($iMaxRank < 26 )
+            }else{
+                $aPlace = $this->lookupPolygon($sPointSQL, $iMaxRank);
+                if ($aPlace) {
+                // if place node is found adress goes over linked_place_id
+                    if (!empty($aPlace['linked_place_id'])) {
+                        $oResult = new Result($aPlace['linked_place_id']);
+                    }else{
+                        $oResult = new Result($aPlace['place_id']);
+                    }

                 }
             }
                 }
             }

-
-            $aPlaceTiger = chksql($this->oDB->getRow($sSQL),
-                                  "Could not determine closest Tiger place.");
-            if ($aPlaceTiger) {
-                if (CONST_Debug) var_dump('found Tiger housenumber', $aPlaceTiger);
-                $bPlaceIsTiger = true;
-                $aPlace = $aPlaceTiger;
-                $iPlaceID = $aPlaceTiger['place_id'];
-                $iParentPlaceID = $aPlaceTiger['parent_place_id']; // the street
-                $fFraction = $aPlaceTiger['fraction'];
-                $iMaxRank = 30;
-            }
-        }
-
-        // The point we found might be too small - use the address to find what it is a child of
-        if ($iPlaceID && $iMaxRank < 28) {
-            if (($aPlace['rank_search'] > 28 || $bPlaceIsTiger || $bPlaceIsLine) && $iParentPlaceID) {
-                $iPlaceID = $iParentPlaceID;
-            }
-            $sSQL  = 'select address_place_id';
-            $sSQL .= ' FROM place_addressline';
-            $sSQL .= " WHERE place_id = $iPlaceID";
-            $sSQL .= " ORDER BY abs(cached_rank_address - $iMaxRank) asc,cached_rank_address desc,isaddress desc,distance desc";
-            $sSQL .= ' LIMIT 1';
-            $iPlaceID = chksql($this->oDB->getOne($sSQL),
-                               "Could not get parent for place.");
-            if (!$iPlaceID) {
-                $iPlaceID = $aPlace['place_id'];
-            }
-        }
-        return array('place_id' => $iPlaceID,
-                    'type' => $bPlaceIsTiger ? 'tiger' : ($bPlaceIsLine ? 'interpolation' : 'osm'),
-                    'fraction' => ($bPlaceIsTiger || $bPlaceIsLine) ? $fFraction : -1);
+        return $oResult;

     }
     }

-    
-}
+
+}
\ No newline at end of file