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convert phrase array to class
[nominatim.git] / lib / Geocode.php
diff --git a/lib/Geocode.php b/lib/Geocode.php
index 33b02d2b1f344eba920669f6ef8d29383def0e78..399139f08585773406d5e2df36a968dd809129e3 100644 (file)
--- a/lib/Geocode.php
+++ b/lib/Geocode.php
@@ -2,10 +2,11 @@
 
 namespace Nominatim;
 
 
 namespace Nominatim;
 
-require_once(CONST_BasePath.'/lib/NearPoint.php');
 require_once(CONST_BasePath.'/lib/PlaceLookup.php');
 require_once(CONST_BasePath.'/lib/PlaceLookup.php');
+require_once(CONST_BasePath.'/lib/Phrase.php');
 require_once(CONST_BasePath.'/lib/ReverseGeocode.php');
 require_once(CONST_BasePath.'/lib/SearchDescription.php');
 require_once(CONST_BasePath.'/lib/ReverseGeocode.php');
 require_once(CONST_BasePath.'/lib/SearchDescription.php');
+require_once(CONST_BasePath.'/lib/SearchContext.php');
 
 class Geocode
 {
 
 class Geocode
 {
@@ -37,9 +38,8 @@ class Geocode
 
     protected $bBoundedSearch = false;
     protected $aViewBox = false;
 
     protected $bBoundedSearch = false;
     protected $aViewBox = false;
-    protected $sViewboxCentreSQL = false;
-    protected $sViewboxSmallSQL = false;
-    protected $sViewboxLargeSQL = false;
+    protected $aRoutePoints = false;
+    protected $aRouteWidth = false;
 
     protected $iMaxRank = 20;
     protected $iMinAddressRank = 0;
 
     protected $iMaxRank = 20;
     protected $iMinAddressRank = 0;
@@ -184,26 +184,6 @@ class Geocode
         $this->iMaxAddressRank = $iMax;
     }
 
         $this->iMaxAddressRank = $iMax;
     }
 
-    public function setRoute($aRoutePoints, $fRouteWidth)
-    {
-        $this->aViewBox = false;
-
-        $this->sViewboxCentreSQL = "ST_SetSRID('LINESTRING(";
-        $sSep = '';
-        foreach ($aRoutePoints as $aPoint) {
-            $fPoint = (float)$aPoint;
-            $this->sViewboxCentreSQL .= $sSep.$fPoint;
-            $sSep = ($sSep == ' ') ? ',' : ' ';
-        }
-        $this->sViewboxCentreSQL .= ")'::geometry,4326)";
-
-        $this->sViewboxSmallSQL = 'ST_BUFFER('.$this->sViewboxCentreSQL;
-        $this->sViewboxSmallSQL .= ','.($fRouteWidth/69).')';
-
-        $this->sViewboxLargeSQL = 'ST_BUFFER('.$this->sViewboxCentreSQL;
-        $this->sViewboxLargeSQL .= ','.($fRouteWidth/30).')';
-    }
-
     public function setViewbox($aViewbox)
     {
         $this->aViewBox = array_map('floatval', $aViewbox);
     public function setViewbox($aViewbox)
     {
         $this->aViewBox = array_map('floatval', $aViewbox);
@@ -218,29 +198,6 @@ class Geocode
         ) {
             userError("Bad parameter 'viewbox'. Not a box.");
         }
         ) {
             userError("Bad parameter 'viewbox'. Not a box.");
         }
-
-        $fHeight = $this->aViewBox[0] - $this->aViewBox[2];
-        $fWidth = $this->aViewBox[1] - $this->aViewBox[3];
-        $aBigViewBox[0] = $this->aViewBox[0] + $fHeight;
-        $aBigViewBox[2] = $this->aViewBox[2] - $fHeight;
-        $aBigViewBox[1] = $this->aViewBox[1] + $fWidth;
-        $aBigViewBox[3] = $this->aViewBox[3] - $fWidth;
-
-        $this->sViewboxCentreSQL = false;
-        $this->sViewboxSmallSQL = sprintf(
-            'ST_SetSRID(ST_MakeBox2D(ST_Point(%F,%F),ST_Point(%F,%F)),4326)',
-            $this->aViewBox[0],
-            $this->aViewBox[1],
-            $this->aViewBox[2],
-            $this->aViewBox[3]
-        );
-        $this->sViewboxLargeSQL = sprintf(
-            'ST_SetSRID(ST_MakeBox2D(ST_Point(%F,%F),ST_Point(%F,%F)),4326)',
-            $aBigViewBox[0],
-            $aBigViewBox[1],
-            $aBigViewBox[2],
-            $aBigViewBox[3]
-        );
     }
 
     public function setQuery($sQueryString)
     }
 
     public function setQuery($sQueryString)
@@ -319,7 +276,8 @@ class Geocode
                 $aRoute = $oParams->getStringList('route');
                 $fRouteWidth = $oParams->getFloat('routewidth');
                 if ($aRoute && $fRouteWidth) {
                 $aRoute = $oParams->getStringList('route');
                 $fRouteWidth = $oParams->getFloat('routewidth');
                 if ($aRoute && $fRouteWidth) {
-                    $this->setRoute($aRoute, $fRouteWidth);
+                    $this->aRoutePoints = $aRoute;
+                    $this->aRouteWidth = $fRouteWidth;
                 }
             }
         }
                 }
             }
         }
@@ -368,7 +326,7 @@ class Geocode
         $this->aAddressRankList = array();
 
         $this->aStructuredQuery = array();
         $this->aAddressRankList = array();
 
         $this->aStructuredQuery = array();
-        $this->sAllowedTypesSQLList = False;
+        $this->sAllowedTypesSQLList = false;
 
         $this->loadStructuredAddressElement($sAmenity, 'amenity', 26, 30, false);
         $this->loadStructuredAddressElement($sStreet, 'street', 26, 30, false);
 
         $this->loadStructuredAddressElement($sAmenity, 'amenity', 26, 30, false);
         $this->loadStructuredAddressElement($sStreet, 'street', 26, 30, false);
@@ -407,29 +365,20 @@ class Geocode
         return false;
     }
 
         return false;
     }
 
-    public function getDetails($aPlaceIDs)
+    public function getDetails($aPlaceIDs, $oCtx)
     {
         //$aPlaceIDs is an array with key: placeID and value: tiger-housenumber, if found, else -1
         if (sizeof($aPlaceIDs) == 0) return array();
 
         $sLanguagePrefArraySQL = getArraySQL(
     {
         //$aPlaceIDs is an array with key: placeID and value: tiger-housenumber, if found, else -1
         if (sizeof($aPlaceIDs) == 0) return array();
 
         $sLanguagePrefArraySQL = getArraySQL(
-            array_map("getDBQuoted",
-            $this->aLangPrefOrder)
+            array_map("getDBQuoted", $this->aLangPrefOrder)
         );
 
         // Get the details for display (is this a redundant extra step?)
         $sPlaceIDs = join(',', array_keys($aPlaceIDs));
 
         );
 
         // Get the details for display (is this a redundant extra step?)
         $sPlaceIDs = join(',', array_keys($aPlaceIDs));
 
-        $sImportanceSQL = '';
-        $sImportanceSQLGeom = '';
-        if ($this->sViewboxSmallSQL) {
-            $sImportanceSQL .= " CASE WHEN ST_Contains($this->sViewboxSmallSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
-            $sImportanceSQLGeom .= " CASE WHEN ST_Contains($this->sViewboxSmallSQL, geometry) THEN 1 ELSE 0.75 END * ";
-        }
-        if ($this->sViewboxLargeSQL) {
-            $sImportanceSQL .= " CASE WHEN ST_Contains($this->sViewboxLargeSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
-            $sImportanceSQLGeom .= " CASE WHEN ST_Contains($this->sViewboxLargeSQL, geometry) THEN 1 ELSE 0.75 END * ";
-        }
+        $sImportanceSQL = $oCtx->viewboxImportanceSQL('ST_Collect(centroid)');
+        $sImportanceSQLGeom = $oCtx->viewboxImportanceSQL('geometry');
 
         $sSQL  = "SELECT ";
         $sSQL .= "    osm_type,";
 
         $sSQL  = "SELECT ";
         $sSQL .= "    osm_type,";
@@ -449,17 +398,21 @@ class Geocode
         if ($this->bIncludeNameDetails) $sSQL .= "hstore_to_json(name)::text AS names,";
         $sSQL .= "    avg(ST_X(centroid)) AS lon, ";
         $sSQL .= "    avg(ST_Y(centroid)) AS lat, ";
         if ($this->bIncludeNameDetails) $sSQL .= "hstore_to_json(name)::text AS names,";
         $sSQL .= "    avg(ST_X(centroid)) AS lon, ";
         $sSQL .= "    avg(ST_Y(centroid)) AS lat, ";
-        $sSQL .= "    ".$sImportanceSQL."COALESCE(importance,0.75-(rank_search::float/40)) AS importance, ";
-        $sSQL .= "    ( ";
-        $sSQL .= "       SELECT max(p.importance*(p.rank_address+2))";
-        $sSQL .= "       FROM ";
-        $sSQL .= "         place_addressline s, ";
-        $sSQL .= "         placex p";
-        $sSQL .= "       WHERE s.place_id = min(CASE WHEN placex.rank_search < 28 THEN placex.place_id ELSE placex.parent_place_id END)";
-        $sSQL .= "         AND p.place_id = s.address_place_id ";
-        $sSQL .= "         AND s.isaddress ";
-        $sSQL .= "         AND p.importance is not null ";
-        $sSQL .= "    ) AS addressimportance, ";
+        $sSQL .= "    COALESCE(importance,0.75-(rank_search::float/40)) $sImportanceSQL AS importance, ";
+        if ($oCtx->hasNearPoint()) {
+            $sSQL .= $oCtx->distanceSQL('ST_Collect(centroid)')." AS addressimportance,";
+        } else {
+            $sSQL .= "    ( ";
+            $sSQL .= "       SELECT max(p.importance*(p.rank_address+2))";
+            $sSQL .= "       FROM ";
+            $sSQL .= "         place_addressline s, ";
+            $sSQL .= "         placex p";
+            $sSQL .= "       WHERE s.place_id = min(CASE WHEN placex.rank_search < 28 THEN placex.place_id ELSE placex.parent_place_id END)";
+            $sSQL .= "         AND p.place_id = s.address_place_id ";
+            $sSQL .= "         AND s.isaddress ";
+            $sSQL .= "         AND p.importance is not null ";
+            $sSQL .= "    ) AS addressimportance, ";
+        }
         $sSQL .= "    (extratags->'place') AS extra_place ";
         $sSQL .= " FROM placex";
         $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
         $sSQL .= "    (extratags->'place') AS extra_place ";
         $sSQL .= " FROM placex";
         $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
@@ -508,17 +461,21 @@ class Geocode
         if ($this->bIncludeExtraTags) $sSQL .= "null AS extra,";
         if ($this->bIncludeNameDetails) $sSQL .= "null AS names,";
         $sSQL .= "  ST_x(st_centroid(geometry)) AS lon, ST_y(st_centroid(geometry)) AS lat,";
         if ($this->bIncludeExtraTags) $sSQL .= "null AS extra,";
         if ($this->bIncludeNameDetails) $sSQL .= "null AS names,";
         $sSQL .= "  ST_x(st_centroid(geometry)) AS lon, ST_y(st_centroid(geometry)) AS lat,";
-        $sSQL .=    $sImportanceSQLGeom."(0.75-(rank_search::float/40)) AS importance, ";
-        $sSQL .= "  (";
-        $sSQL .= "     SELECT max(p.importance*(p.rank_address+2))";
-        $sSQL .= "     FROM ";
-        $sSQL .= "       place_addressline s, ";
-        $sSQL .= "       placex p";
-        $sSQL .= "     WHERE s.place_id = lp.parent_place_id";
-        $sSQL .= "       AND p.place_id = s.address_place_id ";
-        $sSQL .= "       AND s.isaddress";
-        $sSQL .= "       AND p.importance is not null";
-        $sSQL .= "  ) AS addressimportance, ";
+        $sSQL .= "  (0.75-(rank_search::float/40)) $sImportanceSQLGeom AS importance, ";
+        if ($oCtx->hasNearPoint()) {
+            $sSQL .= $oCtx->distanceSQL('geometry')." AS addressimportance,";
+        } else {
+            $sSQL .= "  (";
+            $sSQL .= "     SELECT max(p.importance*(p.rank_address+2))";
+            $sSQL .= "     FROM ";
+            $sSQL .= "       place_addressline s, ";
+            $sSQL .= "       placex p";
+            $sSQL .= "     WHERE s.place_id = lp.parent_place_id";
+            $sSQL .= "       AND p.place_id = s.address_place_id ";
+            $sSQL .= "       AND s.isaddress";
+            $sSQL .= "       AND p.importance is not null";
+            $sSQL .= "  ) AS addressimportance, ";
+        }
         $sSQL .= "  null AS extra_place ";
         $sSQL .= "FROM location_postcode lp";
         $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
         $sSQL .= "  null AS extra_place ";
         $sSQL .= "FROM location_postcode lp";
         $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
@@ -556,17 +513,21 @@ class Geocode
                 if ($this->bIncludeNameDetails) $sSQL .= "null AS names,";
                 $sSQL .= "     avg(st_x(centroid)) AS lon, ";
                 $sSQL .= "     avg(st_y(centroid)) AS lat,";
                 if ($this->bIncludeNameDetails) $sSQL .= "null AS names,";
                 $sSQL .= "     avg(st_x(centroid)) AS lon, ";
                 $sSQL .= "     avg(st_y(centroid)) AS lat,";
-                $sSQL .= "     ".$sImportanceSQL."-1.15 AS importance, ";
-                $sSQL .= "     (";
-                $sSQL .= "        SELECT max(p.importance*(p.rank_address+2))";
-                $sSQL .= "        FROM ";
-                $sSQL .= "          place_addressline s, ";
-                $sSQL .= "          placex p";
-                $sSQL .= "        WHERE s.place_id = min(blub.parent_place_id)";
-                $sSQL .= "          AND p.place_id = s.address_place_id ";
-                $sSQL .= "          AND s.isaddress";
-                $sSQL .= "          AND p.importance is not null";
-                $sSQL .= "     ) AS addressimportance, ";
+                $sSQL .= "     -1.15".$sImportanceSQL." AS importance, ";
+                if ($oCtx->hasNearPoint()) {
+                    $sSQL .= $oCtx->distanceSQL('ST_Collect(centroid)')." AS addressimportance,";
+                } else {
+                    $sSQL .= "     (";
+                    $sSQL .= "        SELECT max(p.importance*(p.rank_address+2))";
+                    $sSQL .= "        FROM ";
+                    $sSQL .= "          place_addressline s, ";
+                    $sSQL .= "          placex p";
+                    $sSQL .= "        WHERE s.place_id = min(blub.parent_place_id)";
+                    $sSQL .= "          AND p.place_id = s.address_place_id ";
+                    $sSQL .= "          AND s.isaddress";
+                    $sSQL .= "          AND p.importance is not null";
+                    $sSQL .= "     ) AS addressimportance, ";
+                }
                 $sSQL .= "     null AS extra_place ";
                 $sSQL .= " FROM (";
                 $sSQL .= "     SELECT place_id, ";    // interpolate the Tiger housenumbers here
                 $sSQL .= "     null AS extra_place ";
                 $sSQL .= " FROM (";
                 $sSQL .= "     SELECT place_id, ";    // interpolate the Tiger housenumbers here
@@ -606,18 +567,22 @@ class Geocode
             if ($this->bIncludeNameDetails) $sSQL .= "null AS names, ";
             $sSQL .= "  AVG(st_x(centroid)) AS lon, ";
             $sSQL .= "  AVG(st_y(centroid)) AS lat, ";
             if ($this->bIncludeNameDetails) $sSQL .= "null AS names, ";
             $sSQL .= "  AVG(st_x(centroid)) AS lon, ";
             $sSQL .= "  AVG(st_y(centroid)) AS lat, ";
-            $sSQL .= "  ".$sImportanceSQL."-0.1 AS importance, ";  // slightly smaller than the importance for normal houses with rank 30, which is 0
-            $sSQL .= "  (";
-            $sSQL .= "     SELECT ";
-            $sSQL .= "       MAX(p.importance*(p.rank_address+2)) ";
-            $sSQL .= "     FROM";
-            $sSQL .= "       place_addressline s, ";
-            $sSQL .= "       placex p";
-            $sSQL .= "     WHERE s.place_id = min(blub.parent_place_id) ";
-            $sSQL .= "       AND p.place_id = s.address_place_id ";
-            $sSQL .= "       AND s.isaddress ";
-            $sSQL .= "       AND p.importance is not null";
-            $sSQL .= "  ) AS addressimportance,";
+            $sSQL .= "  -0.1".$sImportanceSQL." AS importance, ";  // slightly smaller than the importance for normal houses with rank 30, which is 0
+            if ($oCtx->hasNearPoint()) {
+                $sSQL .= $oCtx->distanceSQL('ST_Collect(centroid)')." AS addressimportance,";
+            } else {
+                $sSQL .= "  (";
+                $sSQL .= "     SELECT ";
+                $sSQL .= "       MAX(p.importance*(p.rank_address+2)) ";
+                $sSQL .= "     FROM";
+                $sSQL .= "       place_addressline s, ";
+                $sSQL .= "       placex p";
+                $sSQL .= "     WHERE s.place_id = min(blub.parent_place_id) ";
+                $sSQL .= "       AND p.place_id = s.address_place_id ";
+                $sSQL .= "       AND s.isaddress ";
+                $sSQL .= "       AND p.importance is not null";
+                $sSQL .= "  ) AS addressimportance,";
+            }
             $sSQL .= "  null AS extra_place ";
             $sSQL .= "  FROM (";
             $sSQL .= "     SELECT ";
             $sSQL .= "  null AS extra_place ";
             $sSQL .= "  FROM (";
             $sSQL .= "     SELECT ";
@@ -665,17 +630,21 @@ class Geocode
                 if ($this->bIncludeNameDetails) $sSQL .= "null AS names, ";
                 $sSQL .= "     avg(ST_X(centroid)) AS lon, ";
                 $sSQL .= "     avg(ST_Y(centroid)) AS lat, ";
                 if ($this->bIncludeNameDetails) $sSQL .= "null AS names, ";
                 $sSQL .= "     avg(ST_X(centroid)) AS lon, ";
                 $sSQL .= "     avg(ST_Y(centroid)) AS lat, ";
-                $sSQL .= "     ".$sImportanceSQL."-1.10 AS importance, ";
-                $sSQL .= "     ( ";
-                $sSQL .= "       SELECT max(p.importance*(p.rank_address+2))";
-                $sSQL .= "       FROM ";
-                $sSQL .= "          place_addressline s, ";
-                $sSQL .= "          placex p";
-                $sSQL .= "       WHERE s.place_id = min(location_property_aux.parent_place_id)";
-                $sSQL .= "         AND p.place_id = s.address_place_id ";
-                $sSQL .= "         AND s.isaddress";
-                $sSQL .= "         AND p.importance is not null";
-                $sSQL .= "     ) AS addressimportance, ";
+                $sSQL .= "     -1.10".$sImportanceSQL." AS importance, ";
+                if ($oCtx->hasNearPoint()) {
+                    $sSQL .= $oCtx->distanceSQL('ST_Collect(centroid)')." AS addressimportance,";
+                } else {
+                    $sSQL .= "     ( ";
+                    $sSQL .= "       SELECT max(p.importance*(p.rank_address+2))";
+                    $sSQL .= "       FROM ";
+                    $sSQL .= "          place_addressline s, ";
+                    $sSQL .= "          placex p";
+                    $sSQL .= "       WHERE s.place_id = min(location_property_aux.parent_place_id)";
+                    $sSQL .= "         AND p.place_id = s.address_place_id ";
+                    $sSQL .= "         AND s.isaddress";
+                    $sSQL .= "         AND p.importance is not null";
+                    $sSQL .= "     ) AS addressimportance, ";
+                }
                 $sSQL .= "     null AS extra_place ";
                 $sSQL .= "  FROM location_property_aux ";
                 $sSQL .= "  WHERE place_id in ($sPlaceIDs) ";
                 $sSQL .= "     null AS extra_place ";
                 $sSQL .= "  FROM location_property_aux ";
                 $sSQL .= "  WHERE place_id in ($sPlaceIDs) ";
@@ -700,7 +669,7 @@ class Geocode
         return $aSearchResults;
     }
 
         return $aSearchResults;
     }
 
-    public function getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases, $sNormQuery)
+    public function getGroupedSearches($aSearches, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bIsStructured, $sNormQuery)
     {
         /*
              Calculate all searches using aValidTokens i.e.
     {
         /*
              Calculate all searches using aValidTokens i.e.
@@ -715,15 +684,11 @@ class Geocode
          */
         $iGlobalRank = 0;
 
          */
         $iGlobalRank = 0;
 
-        foreach ($aPhrases as $iPhrase => $aPhrase) {
+        foreach ($aPhrases as $iPhrase => $oPhrase) {
             $aNewPhraseSearches = array();
             $aNewPhraseSearches = array();
-            if ($bStructuredPhrases) {
-                $sPhraseType = $aPhraseTypes[$iPhrase];
-            } else {
-                $sPhraseType = '';
-            }
+            $sPhraseType = $bIsStructured ? $oPhrase->getPhraseType() : '';
 
 
-            foreach ($aPhrase['wordsets'] as $iWordSet => $aWordset) {
+            foreach ($oPhrase->getWordSets() as $iWordSet => $aWordset) {
                 // Too many permutations - too expensive
                 if ($iWordSet > 120) break;
 
                 // Too many permutations - too expensive
                 if ($iWordSet > 120) break;
 
@@ -741,12 +706,15 @@ class Geocode
 
                         // If the token is valid
                         if (isset($aValidTokens[' '.$sToken])) {
 
                         // If the token is valid
                         if (isset($aValidTokens[' '.$sToken])) {
-                            // Recheck if the original word shows up in the query.
-                            $bWordInQuery = false;
-                            if (isset($aSearchTerm['word']) && $aSearchTerm['word']) {
-                                $bWordInQuery = $this->normTerm($aSearchTerm['word']) !== false;
-                            }
                             foreach ($aValidTokens[' '.$sToken] as $aSearchTerm) {
                             foreach ($aValidTokens[' '.$sToken] as $aSearchTerm) {
+                                // Recheck if the original word shows up in the query.
+                                $bWordInQuery = false;
+                                if (isset($aSearchTerm['word']) && $aSearchTerm['word']) {
+                                    $bWordInQuery = strpos(
+                                        $sNormQuery,
+                                        $this->normTerm($aSearchTerm['word'])
+                                    ) !== false;
+                                }
                                 $aNewSearches = $oCurrentSearch->extendWithFullTerm(
                                     $aSearchTerm,
                                     $bWordInQuery,
                                 $aNewSearches = $oCurrentSearch->extendWithFullTerm(
                                     $aSearchTerm,
                                     $bWordInQuery,
@@ -775,7 +743,7 @@ class Geocode
                             foreach ($aValidTokens[$sToken] as $aSearchTerm) {
                                 $aNewSearches = $oCurrentSearch->extendWithPartialTerm(
                                     $aSearchTerm,
                             foreach ($aValidTokens[$sToken] as $aSearchTerm) {
                                 $aNewSearches = $oCurrentSearch->extendWithPartialTerm(
                                     $aSearchTerm,
-                                    $bStructuredPhrases,
+                                    $bIsStructured,
                                     $iPhrase,
                                     $aWordFrequencyScores,
                                     isset($aValidTokens[' '.$sToken]) ? $aValidTokens[' '.$sToken] : array()
                                     $iPhrase,
                                     $aWordFrequencyScores,
                                     isset($aValidTokens[' '.$sToken]) ? $aValidTokens[' '.$sToken] : array()
@@ -786,7 +754,6 @@ class Geocode
                                         $aNewWordsetSearches[] = $oSearch;
                                     }
                                 }
                                         $aNewWordsetSearches[] = $oSearch;
                                     }
                                 }
-
                             }
                         }
                     }
                             }
                         }
                     }
@@ -887,15 +854,29 @@ class Geocode
     {
         if (!$this->sQuery && !$this->aStructuredQuery) return array();
 
     {
         if (!$this->sQuery && !$this->aStructuredQuery) return array();
 
+        $oCtx = new SearchContext();
+
+        if ($this->aRoutePoints) {
+            $oCtx->setViewboxFromRoute(
+                $this->oDB,
+                $this->aRoutePoints,
+                $this->aRouteWidth,
+                $this->bBoundedSearch
+            );
+        } elseif ($this->aViewBox) {
+            $oCtx->setViewboxFromBox($this->aViewBox, $this->bBoundedSearch);
+        }
+        if ($this->aExcludePlaceIDs) {
+            $oCtx->setExcludeList($this->aExcludePlaceIDs);
+        }
+        if ($this->aCountryCodes) {
+            $oCtx->setCountryList($this->aCountryCodes);
+        }
+
         $sNormQuery = $this->normTerm($this->sQuery);
         $sLanguagePrefArraySQL = getArraySQL(
         $sNormQuery = $this->normTerm($this->sQuery);
         $sLanguagePrefArraySQL = getArraySQL(
-            array_map("getDBQuoted",
-            $this->aLangPrefOrder)
+            array_map("getDBQuoted", $this->aLangPrefOrder)
         );
         );
-        $sCountryCodesSQL = false;
-        if ($this->aCountryCodes) {
-            $sCountryCodesSQL = join(',', array_map('addQuotes', $this->aCountryCodes));
-        }
 
         $sQuery = $this->sQuery;
         if (!preg_match('//u', $sQuery)) {
 
         $sQuery = $this->sQuery;
         if (!preg_match('//u', $sQuery)) {
@@ -909,37 +890,13 @@ class Geocode
             $sQuery = preg_replace('/(^|,)\s*la\s*(,|$)/', '\1louisiana\2', $sQuery);
         }
 
             $sQuery = preg_replace('/(^|,)\s*la\s*(,|$)/', '\1louisiana\2', $sQuery);
         }
 
-        $bBoundingBoxSearch = $this->bBoundedSearch && $this->sViewboxSmallSQL;
-        if ($this->sViewboxCentreSQL) {
-            // For complex viewboxes (routes) precompute the bounding geometry
-            $sGeom = chksql(
-                $this->oDB->getOne("select ".$this->sViewboxSmallSQL),
-                "Could not get small viewbox"
-            );
-            $this->sViewboxSmallSQL = "'".$sGeom."'::geometry";
-
-            $sGeom = chksql(
-                $this->oDB->getOne("select ".$this->sViewboxLargeSQL),
-                "Could not get large viewbox"
-            );
-            $this->sViewboxLargeSQL = "'".$sGeom."'::geometry";
-        }
-
         // Do we have anything that looks like a lat/lon pair?
         // Do we have anything that looks like a lat/lon pair?
-        $oNearPoint = false;
-        if ($aLooksLike = NearPoint::extractFromQuery($sQuery)) {
-            $oNearPoint = $aLooksLike['pt'];
-            $sQuery = $aLooksLike['query'];
-        }
+        $sQuery = $oCtx->setNearPointFromQuery($sQuery);
 
         $aSearchResults = array();
         if ($sQuery || $this->aStructuredQuery) {
             // Start with a single blank search
 
         $aSearchResults = array();
         if ($sQuery || $this->aStructuredQuery) {
             // Start with a single blank search
-            $aSearches = array(new SearchDescription());
-
-            if ($oNearPoint) {
-                $aSearches[0]->setNear($oNearPoint);
-            }
+            $aSearches = array(new SearchDescription($oCtx));
 
             if ($sQuery) {
                 $sQuery = $aSearches[0]->extractKeyValuePairs($sQuery);
 
             if ($sQuery) {
                 $sQuery = $aSearches[0]->extractKeyValuePairs($sQuery);
@@ -995,10 +952,10 @@ class Geocode
             // Split query into phrases
             // Commas are used to reduce the search space by indicating where phrases split
             if ($this->aStructuredQuery) {
             // Split query into phrases
             // Commas are used to reduce the search space by indicating where phrases split
             if ($this->aStructuredQuery) {
-                $aPhrases = $this->aStructuredQuery;
+                $aInPhrases = $this->aStructuredQuery;
                 $bStructuredPhrases = true;
             } else {
                 $bStructuredPhrases = true;
             } else {
-                $aPhrases = explode(',', $sQuery);
+                $aInPhrases = explode(',', $sQuery);
                 $bStructuredPhrases = false;
             }
 
                 $bStructuredPhrases = false;
             }
 
@@ -1007,25 +964,19 @@ class Geocode
             // Get all 'sets' of words
             // Generate a complete list of all
             $aTokens = array();
             // Get all 'sets' of words
             // Generate a complete list of all
             $aTokens = array();
-            foreach ($aPhrases as $iPhrase => $sPhrase) {
-                $aPhrase = chksql(
-                    $this->oDB->getRow("SELECT make_standard_name('".pg_escape_string($sPhrase)."') as string"),
+            $aPhrases = array();
+            foreach ($aInPhrases as $iPhrase => $sPhrase) {
+                $sPhrase = chksql(
+                    $this->oDB->getOne('SELECT make_standard_name('.getDBQuoted($sPhrase).')'),
                     "Cannot normalize query string (is it a UTF-8 string?)"
                 );
                     "Cannot normalize query string (is it a UTF-8 string?)"
                 );
-                if (trim($aPhrase['string'])) {
-                    $aPhrases[$iPhrase] = $aPhrase;
-                    $aPhrases[$iPhrase]['words'] = explode(' ', $aPhrases[$iPhrase]['string']);
-                    $aPhrases[$iPhrase]['wordsets'] = getWordSets($aPhrases[$iPhrase]['words'], 0);
-                    $aTokens = array_merge($aTokens, getTokensFromSets($aPhrases[$iPhrase]['wordsets']));
-                } else {
-                    unset($aPhrases[$iPhrase]);
+                if (trim($sPhrase)) {
+                    $oPhrase = new Phrase($sPhrase, is_string($iPhrase) ? $iPhrase : '');
+                    $oPhrase->addTokens($aTokens);
+                    $aPhrases[] = $oPhrase;
                 }
             }
 
                 }
             }
 
-            // Reindex phrases - we make assumptions later on that they are numerically keyed in order
-            $aPhraseTypes = array_keys($aPhrases);
-            $aPhrases = array_values($aPhrases);
-
             if (sizeof($aTokens)) {
                 // Check which tokens we have, get the ID numbers
                 $sSQL = 'SELECT word_id, word_token, word, class, type, country_code, operator, search_name_count';
             if (sizeof($aTokens)) {
                 // Check which tokens we have, get the ID numbers
                 $sSQL = 'SELECT word_id, word_token, word, class, type, country_code, operator, search_name_count';
@@ -1086,23 +1037,18 @@ class Geocode
                 // Any words that have failed completely?
                 // TODO: suggestions
 
                 // Any words that have failed completely?
                 // TODO: suggestions
 
-                // Start the search process
-                // array with: placeid => -1 | tiger-housenumber
-                $aResultPlaceIDs = array();
-
-                $aGroupedSearches = $this->getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases, $sNormQuery);
+                $aGroupedSearches = $this->getGroupedSearches($aSearches, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases, $sNormQuery);
 
                 if ($this->bReverseInPlan) {
                     // Reverse phrase array and also reverse the order of the wordsets in
                     // the first and final phrase. Don't bother about phrases in the middle
                     // because order in the address doesn't matter.
                     $aPhrases = array_reverse($aPhrases);
 
                 if ($this->bReverseInPlan) {
                     // Reverse phrase array and also reverse the order of the wordsets in
                     // the first and final phrase. Don't bother about phrases in the middle
                     // because order in the address doesn't matter.
                     $aPhrases = array_reverse($aPhrases);
-                    $aPhrases[0]['wordsets'] = getInverseWordSets($aPhrases[0]['words'], 0);
+                    $aPhrases[0]->invertWordSets();
                     if (sizeof($aPhrases) > 1) {
                     if (sizeof($aPhrases) > 1) {
-                        $aFinalPhrase = end($aPhrases);
-                        $aPhrases[sizeof($aPhrases)-1]['wordsets'] = getInverseWordSets($aFinalPhrase['words'], 0);
+                        $aPhrases[sizeof($aPhrases)-1]->invertWordSets();
                     }
                     }
-                    $aReverseGroupedSearches = $this->getGroupedSearches($aSearches, null, $aPhrases, $aValidTokens, $aWordFrequencyScores, false, $sNormQuery);
+                    $aReverseGroupedSearches = $this->getGroupedSearches($aSearches, $aPhrases, $aValidTokens, $aWordFrequencyScores, false, $sNormQuery);
 
                     foreach ($aGroupedSearches as $aSearches) {
                         foreach ($aSearches as $aSearch) {
 
                     foreach ($aGroupedSearches as $aSearches) {
                         foreach ($aSearches as $aSearch) {
@@ -1144,124 +1090,38 @@ class Geocode
 
             if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
 
 
             if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
 
+            // Start the search process
+            // array with: placeid => -1 | tiger-housenumber
+            $aResultPlaceIDs = array();
             $iGroupLoop = 0;
             $iQueryLoop = 0;
             foreach ($aGroupedSearches as $iGroupedRank => $aSearches) {
                 $iGroupLoop++;
                 foreach ($aSearches as $oSearch) {
                     $iQueryLoop++;
             $iGroupLoop = 0;
             $iQueryLoop = 0;
             foreach ($aGroupedSearches as $iGroupedRank => $aSearches) {
                 $iGroupLoop++;
                 foreach ($aSearches as $oSearch) {
                     $iQueryLoop++;
-                    $searchedHousenumber = -1;
-
-                    if (CONST_Debug) echo "<hr><b>Search Loop, group $iGroupLoop, loop $iQueryLoop</b>";
-                    if (CONST_Debug) _debugDumpGroupedSearches(array($iGroupedRank => array($oSearch)), $aValidTokens);
-
-                    $aPlaceIDs = array();
-                    if ($oSearch->isCountrySearch()) {
-                        // Just looking for a country - look it up
-                        if (4 >= $this->iMinAddressRank && 4 <= $this->iMaxAddressRank) {
-                            $aPlaceIDs = $oSearch->queryCountry(
-                                $this->oDB,
-                                $bBoundingBoxSearch ? $this->sViewboxSmallSQL : ''
-                            );
-                        }
-                    } elseif (!$oSearch->isNamedSearch()) {
-                        // looking for a POI in a geographic area
-                        if (!$bBoundingBoxSearch && !$oSearch->isNearSearch()) {
-                            continue;
-                        }
-
-                        $aPlaceIDs = $oSearch->queryNearbyPoi(
-                            $this->oDB,
-                            $sCountryCodesSQL,
-                            $bBoundingBoxSearch ? $this->sViewboxSmallSQL : '',
-                            $this->sViewboxCentreSQL,
-                            $this->aExcludePlaceIDs ? join(',', $this->aExcludePlaceIDs) : '',
-                            $this->iLimit
-                        );
-                    } elseif ($oSearch->isOperator(Operator::POSTCODE)) {
-                        $aPlaceIDs = $oSearch->queryPostcode(
-                            $oDB,
-                            $sCountryCodesSQL,
-                            $this->iLimit
-                        );
-                    } else {
-                        // Ordinary search:
-                        // First search for places according to name and address.
-                        $aNamedPlaceIDs = $oSearch->queryNamedPlace(
-                            $this->oDB,
-                            $aWordFrequencyScores,
-                            $sCountryCodesSQL,
-                            $this->iMinAddressRank,
-                            $this->iMaxAddressRank,
-                            $this->aExcludePlaceIDs ? join(',', $this->aExcludePlaceIDs) : '',
-                            $bBoundingBoxSearch ? $this->sViewboxSmallSQL : '',
-                            $bBoundingBoxSearch ? $this->sViewboxLargeSQL : '',
-                            $this->iLimit
-                        );
-
-                        if (sizeof($aNamedPlaceIDs)) {
-                            foreach ($aNamedPlaceIDs as $aRow) {
-                                $aPlaceIDs[] = $aRow['place_id'];
-                                $this->exactMatchCache[$aRow['place_id']] = $aRow['exactmatch'];
-                            }
-                        }
-
-                        //now search for housenumber, if housenumber provided
-                        if ($oSearch->hasHouseNumber() && sizeof($aPlaceIDs)) {
-                            $aResult = $oSearch->queryHouseNumber(
-                                $this->oDB,
-                                $aPlaceIDs,
-                                $this->aExcludePlaceIDs ? join(',', $this->aExcludePlaceIDs) : '',
-                                $this->iLimit
-                            );
-
-                            if (sizeof($aResult)) {
-                                $searchedHousenumber = $aResult['iHouseNumber'];
-                                $aPlaceIDs = $aResult['aPlaceIDs'];
-                            } elseif (!$oSearch->looksLikeFullAddress()) {
-                                $aPlaceIDs = array();
-                            }
-                        }
-
-                        // finally get POIs if requested
-                        if ($oSearch->isPoiSearch() && sizeof($aPlaceIDs)) {
-                            $aPlaceIDs = $oSearch->queryPoiByOperator(
-                                $this->oDB,
-                                $aPlaceIDs,
-                                $this->aExcludePlaceIDs ? join(',', $this->aExcludePlaceIDs) : '',
-                                $this->iLimit
-                            );
-                        }
-                    }
 
                     if (CONST_Debug) {
 
                     if (CONST_Debug) {
-                        echo "<br><b>Place IDs:</b> ";
-                        var_Dump($aPlaceIDs);
+                        echo "<hr><b>Search Loop, group $iGroupLoop, loop $iQueryLoop</b>";
+                        _debugDumpGroupedSearches(array($iGroupedRank => array($oSearch)), $aValidTokens);
                     }
 
                     }
 
-                    if (sizeof($aPlaceIDs) && $oSearch->getPostcode()) {
-                        $sSQL = 'SELECT place_id FROM placex';
-                        $sSQL .= ' WHERE place_id in ('.join(',', $aPlaceIDs).')';
-                        $sSQL .= " AND postcode = '".$oSearch->getPostcode()."'";
-                        if (CONST_Debug) var_dump($sSQL);
-                        $aFilteredPlaceIDs = chksql($this->oDB->getCol($sSQL));
-                        if ($aFilteredPlaceIDs) {
-                            $aPlaceIDs = $aFilteredPlaceIDs;
-                            if (CONST_Debug) {
-                                echo "<br><b>Place IDs after postcode filtering:</b> ";
-                                var_Dump($aPlaceIDs);
-                            }
-                        }
-                    }
+                    $aRes = $oSearch->query(
+                        $this->oDB,
+                        $aWordFrequencyScores,
+                        $this->exactMatchCache,
+                        $this->iMinAddressRank,
+                        $this->iMaxAddressRank,
+                        $this->iLimit
+                    );
 
 
-                    foreach ($aPlaceIDs as $iPlaceID) {
+                    foreach ($aRes['IDs'] as $iPlaceID) {
                         // array for placeID => -1 | Tiger housenumber
                         // array for placeID => -1 | Tiger housenumber
-                        $aResultPlaceIDs[$iPlaceID] = $searchedHousenumber;
+                        $aResultPlaceIDs[$iPlaceID] = $aRes['houseNumber'];
                     }
                     if ($iQueryLoop > 20) break;
                 }
 
                     }
                     if ($iQueryLoop > 20) break;
                 }
 
-                if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs) && ($this->iMinAddressRank != 0 || $this->iMaxAddressRank != 30)) {
+                if (sizeof($aResultPlaceIDs) && ($this->iMinAddressRank != 0 || $this->iMaxAddressRank != 30)) {
                     // Need to verify passes rank limits before dropping out of the loop (yuk!)
                     // reduces the number of place ids, like a filter
                     // rank_address is 30 for interpolated housenumbers
                     // Need to verify passes rank limits before dropping out of the loop (yuk!)
                     // reduces the number of place ids, like a filter
                     // rank_address is 30 for interpolated housenumbers
@@ -1304,31 +1164,26 @@ class Geocode
                     $aResultPlaceIDs = $tempIDs;
                 }
 
                     $aResultPlaceIDs = $tempIDs;
                 }
 
-                //exit;
-                if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) break;
+                if (sizeof($aResultPlaceIDs)) break;
                 if ($iGroupLoop > 4) break;
                 if ($iQueryLoop > 30) break;
             }
 
             // Did we find anything?
                 if ($iGroupLoop > 4) break;
                 if ($iQueryLoop > 30) break;
             }
 
             // Did we find anything?
-            if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) {
-                $aSearchResults = $this->getDetails($aResultPlaceIDs);
+            if (sizeof($aResultPlaceIDs)) {
+                $aSearchResults = $this->getDetails($aResultPlaceIDs, $oCtx);
             }
         } else {
             // Just interpret as a reverse geocode
             $oReverse = new ReverseGeocode($this->oDB);
             $oReverse->setZoom(18);
 
             }
         } else {
             // Just interpret as a reverse geocode
             $oReverse = new ReverseGeocode($this->oDB);
             $oReverse->setZoom(18);
 
-            $aLookup = $oReverse->lookup(
-                $oNearPoint->lat(),
-                $oNearPoint->lon(),
-                false
-            );
+            $aLookup = $oReverse->lookupPoint($oCtx->sqlNear, false);
 
             if (CONST_Debug) var_dump("Reverse search", $aLookup);
 
             if ($aLookup['place_id']) {
 
             if (CONST_Debug) var_dump("Reverse search", $aLookup);
 
             if ($aLookup['place_id']) {
-                $aSearchResults = $this->getDetails(array($aLookup['place_id'] => -1));
+                $aSearchResults = $this->getDetails(array($aLookup['place_id'] => -1), $oCtx);
                 $aResultPlaceIDs[$aLookup['place_id']] = -1;
             } else {
                 $aSearchResults = array();
                 $aResultPlaceIDs[$aLookup['place_id']] = -1;
             } else {
                 $aSearchResults = array();
@@ -1421,36 +1276,43 @@ class Geocode
                 }
             }
 
                 }
             }
 
-            // Adjust importance for the number of exact string matches in the result
-            $aResult['importance'] = max(0.001, $aResult['importance']);
-            $iCountWords = 0;
-            $sAddress = $aResult['langaddress'];
-            foreach ($aRecheckWords as $i => $sWord) {
-                if (stripos($sAddress, $sWord)!==false) {
-                    $iCountWords++;
-                    if (preg_match("/(^|,)\s*".preg_quote($sWord, '/')."\s*(,|$)/", $sAddress)) $iCountWords += 0.1;
+            $aResult['name'] = $aResult['langaddress'];
+
+            if ($oCtx->hasNearPoint())
+            {
+                $aResult['importance'] = 0.001;
+                $aResult['foundorder'] = $aResult['addressimportance'];
+            } else {
+                // Adjust importance for the number of exact string matches in the result
+                $aResult['importance'] = max(0.001, $aResult['importance']);
+                $iCountWords = 0;
+                $sAddress = $aResult['langaddress'];
+                foreach ($aRecheckWords as $i => $sWord) {
+                    if (stripos($sAddress, $sWord)!==false) {
+                        $iCountWords++;
+                        if (preg_match("/(^|,)\s*".preg_quote($sWord, '/')."\s*(,|$)/", $sAddress)) $iCountWords += 0.1;
+                    }
                 }
                 }
-            }
 
 
-            $aResult['importance'] = $aResult['importance'] + ($iCountWords*0.1); // 0.1 is a completely arbitrary number but something in the range 0.1 to 0.5 would seem right
+                $aResult['importance'] = $aResult['importance'] + ($iCountWords*0.1); // 0.1 is a completely arbitrary number but something in the range 0.1 to 0.5 would seem right
 
 
-            $aResult['name'] = $aResult['langaddress'];
-            // secondary ordering (for results with same importance (the smaller the better):
-            // - approximate importance of address parts
-            $aResult['foundorder'] = -$aResult['addressimportance']/10;
-            // - number of exact matches from the query
-            if (isset($this->exactMatchCache[$aResult['place_id']])) {
-                $aResult['foundorder'] -= $this->exactMatchCache[$aResult['place_id']];
-            } elseif (isset($this->exactMatchCache[$aResult['parent_place_id']])) {
-                $aResult['foundorder'] -= $this->exactMatchCache[$aResult['parent_place_id']];
-            }
-            // - importance of the class/type
-            if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
-                && $aClassType[$aResult['class'].':'.$aResult['type']]['importance']
-            ) {
-                $aResult['foundorder'] += 0.0001 * $aClassType[$aResult['class'].':'.$aResult['type']]['importance'];
-            } else {
-                $aResult['foundorder'] += 0.01;
+                // secondary ordering (for results with same importance (the smaller the better):
+                // - approximate importance of address parts
+                $aResult['foundorder'] = -$aResult['addressimportance']/10;
+                // - number of exact matches from the query
+                if (isset($this->exactMatchCache[$aResult['place_id']])) {
+                    $aResult['foundorder'] -= $this->exactMatchCache[$aResult['place_id']];
+                } elseif (isset($this->exactMatchCache[$aResult['parent_place_id']])) {
+                    $aResult['foundorder'] -= $this->exactMatchCache[$aResult['parent_place_id']];
+                }
+                // - importance of the class/type
+                if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
+                    && $aClassType[$aResult['class'].':'.$aResult['type']]['importance']
+                ) {
+                    $aResult['foundorder'] += 0.0001 * $aClassType[$aResult['class'].':'.$aResult['type']]['importance'];
+                } else {
+                    $aResult['foundorder'] += 0.01;
+                }
             }
             if (CONST_Debug) var_dump($aResult);
             $aSearchResults[$iResNum] = $aResult;
             }
             if (CONST_Debug) var_dump($aResult);
             $aSearchResults[$iResNum] = $aResult;
Open Source search based on OpenStreetMap data