restrict postcode searches to postcode in first token

[nominatim.git] / lib / SearchDescription.php

diff --git a/lib/SearchDescription.php b/lib/SearchDescription.php
index 276f4c98fb481b51a66e6df0748d599720384d37..ad404528968ad94075bc414af0bc0f5a185873cc 100644 (file)
--- a/lib/SearchDescription.php
+++ b/lib/SearchDescription.php
@@ -17,6 +17,8 @@ class SearchDescription
     private $sCountryCode = '';
     /// List of word ids making up the name of the object.
     private $aName = array();
     private $sCountryCode = '';
     /// List of word ids making up the name of the object.
     private $aName = array();

+    /// True if the name is rare enough to force index use on name.
+    private $bRareName = false;

     /// List of word ids making up the address of the object.
     private $aAddress = array();
     /// Subset of word ids of full words making up the address.
     /// List of word ids making up the address of the object.
     private $aAddress = array();
     /// Subset of word ids of full words making up the address.


@@ -164,30 +166,29 @@ class SearchDescription
     /**
      * Derive new searches by adding a full term to the existing search.
      *
     /**
      * Derive new searches by adding a full term to the existing search.
      *

-     * @param mixed[] $aSearchTerm  Description of the token.
-     * @param bool    $bHasPartial  True if there are also tokens of partial terms
-     *                              with the same name.
-     * @param string  $sPhraseType  Type of phrase the token is contained in.
-     * @param bool    $bFirstToken  True if the token is at the beginning of the
-     *                              query.
-     * @param bool    $bFirstPhrase True if the token is in the first phrase of
-     *                              the query.
-     * @param bool    $bLastToken   True if the token is at the end of the query.
+     * @param object $oSearchTerm  Description of the token.
+     * @param bool   $bHasPartial  True if there are also tokens of partial terms
+     *                             with the same name.
+     * @param string $sPhraseType  Type of phrase the token is contained in.
+     * @param bool   $bFirstToken  True if the token is at the beginning of the
+     *                             query.
+     * @param bool   $bFirstPhrase True if the token is in the first phrase of
+     *                             the query.
+     * @param bool   $bLastToken   True if the token is at the end of the query.

      *
      * @return SearchDescription[] List of derived search descriptions.
      */
      *
      * @return SearchDescription[] List of derived search descriptions.
      */

-    public function extendWithFullTerm($aSearchTerm, $bHasPartial, $sPhraseType, $bFirstToken, $bFirstPhrase, $bLastToken)
+    public function extendWithFullTerm($oSearchTerm, $bHasPartial, $sPhraseType, $bFirstToken, $bFirstPhrase, $bLastToken)

     {
         $aNewSearches = array();
 
         if (($sPhraseType == '' || $sPhraseType == 'country')
     {
         $aNewSearches = array();
 
         if (($sPhraseType == '' || $sPhraseType == 'country')

-            && !empty($aSearchTerm['country_code'])
-            && $aSearchTerm['country_code'] != '0'
+            && is_a($oSearchTerm, '\Nominatim\Token\Country')

         ) {
             if (!$this->sCountryCode) {
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;
         ) {
             if (!$this->sCountryCode) {
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;

-                $oSearch->sCountryCode = $aSearchTerm['country_code'];
+                $oSearch->sCountryCode = $oSearchTerm->sCountryCode;

                 // Country is almost always at the end of the string
                 // - increase score for finding it anywhere else (optimisation)
                 if (!$bLastToken) {
                 // Country is almost always at the end of the string
                 // - increase score for finding it anywhere else (optimisation)
                 if (!$bLastToken) {


@@ -196,26 +197,18 @@ class SearchDescription
                 $aNewSearches[] = $oSearch;
             }
         } elseif (($sPhraseType == '' || $sPhraseType == 'postalcode')
                 $aNewSearches[] = $oSearch;
             }
         } elseif (($sPhraseType == '' || $sPhraseType == 'postalcode')

-                  && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'postcode'
+                  && is_a($oSearchTerm, '\Nominatim\Token\Postcode')

         ) {
         ) {

-            // We need to try the case where the postal code is the primary element
-            // (i.e. no way to tell if it is (postalcode, city) OR (city, postalcode)
-            // so try both.
-            if (!$this->sPostcode
-                && $aSearchTerm['word']
-                && pg_escape_string($aSearchTerm['word']) == $aSearchTerm['word']
-            ) {
+            if (!$this->sPostcode) {

                 // If we have structured search or this is the first term,
                 // make the postcode the primary search element.
                 // If we have structured search or this is the first term,
                 // make the postcode the primary search element.

-                if ($this->iOperator == Operator::NONE
-                    && ($sPhraseType == 'postalcode' || $bFirstToken)
-                ) {
+                if ($this->iOperator == Operator::NONE && $bFirstToken) {

                     $oSearch = clone $this;
                     $oSearch->iSearchRank++;
                     $oSearch->iOperator = Operator::POSTCODE;
                     $oSearch->aAddress = array_merge($this->aAddress, $this->aName);
                     $oSearch->aName =
                     $oSearch = clone $this;
                     $oSearch->iSearchRank++;
                     $oSearch->iOperator = Operator::POSTCODE;
                     $oSearch->aAddress = array_merge($this->aAddress, $this->aName);
                     $oSearch->aName =

-                        array($aSearchTerm['word_id'] => $aSearchTerm['word']);
+                        array($oSearchTerm->iId => $oSearchTerm->sPostcode);

                     $aNewSearches[] = $oSearch;
                 }
 
                     $aNewSearches[] = $oSearch;
                 }
 


@@ -226,23 +219,24 @@ class SearchDescription
                 ) {
                     $oSearch = clone $this;
                     $oSearch->iSearchRank++;
                 ) {
                     $oSearch = clone $this;
                     $oSearch->iSearchRank++;

-                    $oSearch->sPostcode = $aSearchTerm['word'];
+                    $oSearch->sPostcode = $oSearchTerm->sPostcode;

                     $aNewSearches[] = $oSearch;
                 }
             }
         } elseif (($sPhraseType == '' || $sPhraseType == 'street')
                     $aNewSearches[] = $oSearch;
                 }
             }
         } elseif (($sPhraseType == '' || $sPhraseType == 'street')

-                 && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'house'
+                 && is_a($oSearchTerm, '\Nominatim\Token\HouseNumber')

         ) {
             if (!$this->sHouseNumber && $this->iOperator != Operator::POSTCODE) {
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;
         ) {
             if (!$this->sHouseNumber && $this->iOperator != Operator::POSTCODE) {
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;

-                $oSearch->sHouseNumber = trim($aSearchTerm['word_token']);
+                $oSearch->sHouseNumber = $oSearchTerm->sToken;

                 // sanity check: if the housenumber is not mainly made
                 // up of numbers, add a penalty
                 // sanity check: if the housenumber is not mainly made
                 // up of numbers, add a penalty

-                if (preg_match_all('/[^0-9]/', $oSearch->sHouseNumber, $aMatches) > 2) {
+                if (preg_match('/\\d/', $oSearch->sHouseNumber) === 0
+                    || preg_match_all('/[^0-9]/', $oSearch->sHouseNumber, $aMatches) > 2) {

                     $oSearch->iSearchRank++;
                 }
                     $oSearch->iSearchRank++;
                 }

-                if (!isset($aSearchTerm['word_id'])) {
+                if (empty($oSearchTerm->iId)) {

                     $oSearch->iSearchRank++;
                 }
                 // also must not appear in the middle of the address
                     $oSearch->iSearchRank++;
                 }
                 // also must not appear in the middle of the address


@@ -254,27 +248,34 @@ class SearchDescription
                 }
                 $aNewSearches[] = $oSearch;
             }
                 }
                 $aNewSearches[] = $oSearch;
             }

-        } elseif ($sPhraseType == '' && $aSearchTerm['class']) {
+        } elseif ($sPhraseType == ''
+                  && is_a($oSearchTerm, '\Nominatim\Token\SpecialTerm')
+        ) {

             if ($this->iOperator == Operator::NONE) {
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;
 
             if ($this->iOperator == Operator::NONE) {
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;
 

-                $iOp = Operator::NEAR; // near == in for the moment
-                if ($aSearchTerm['operator'] == '') {
+                $iOp = $oSearchTerm->iOperator;
+                if ($iOp == Operator::NONE) {

                     if (!empty($this->aName) || $this->oContext->isBoundedSearch()) {
                         $iOp = Operator::NAME;
                     if (!empty($this->aName) || $this->oContext->isBoundedSearch()) {
                         $iOp = Operator::NAME;

+                    } else {
+                        $iOp = Operator::NEAR;

                     }
                     $oSearch->iSearchRank += 2;
                 }
 
                     }
                     $oSearch->iSearchRank += 2;
                 }
 

-                $oSearch->setPoiSearch($iOp, $aSearchTerm['class'], $aSearchTerm['type']);
+                $oSearch->setPoiSearch(
+                    $iOp,
+                    $oSearchTerm->sClass,
+                    $oSearchTerm->sType
+                );

                 $aNewSearches[] = $oSearch;
             }
                 $aNewSearches[] = $oSearch;
             }

-        } elseif (isset($aSearchTerm['word_id'])
-                  && $aSearchTerm['word_id']
-                  && $sPhraseType != 'country'
+        } elseif ($sPhraseType != 'country'
+                  && is_a($oSearchTerm, '\Nominatim\Token\Word')

         ) {
         ) {

-            $iWordID = $aSearchTerm['word_id'];
+            $iWordID = $oSearchTerm->iId;

             // Full words can only be a name if they appear at the beginning
             // of the phrase. In structured search the name must forcably in
             // the first phrase. In unstructured search it may be in a later
             // Full words can only be a name if they appear at the beginning
             // of the phrase. In structured search the name must forcably in
             // the first phrase. In unstructured search it may be in a later


@@ -282,7 +283,7 @@ class SearchDescription
             if (!empty($this->aName) || !($bFirstPhrase || $sPhraseType == '')) {
                 if (($sPhraseType == '' || !$bFirstPhrase) && !$bHasPartial) {
                     $oSearch = clone $this;
             if (!empty($this->aName) || !($bFirstPhrase || $sPhraseType == '')) {
                 if (($sPhraseType == '' || !$bFirstPhrase) && !$bHasPartial) {
                     $oSearch = clone $this;

-                    $oSearch->iSearchRank++;
+                    $oSearch->iSearchRank += 2;

                     $oSearch->aAddress[$iWordID] = $iWordID;
                     $aNewSearches[] = $oSearch;
                 } else {
                     $oSearch->aAddress[$iWordID] = $iWordID;
                     $aNewSearches[] = $oSearch;
                 } else {


@@ -292,6 +293,11 @@ class SearchDescription
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;
                 $oSearch->aName = array($iWordID => $iWordID);
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;
                 $oSearch->aName = array($iWordID => $iWordID);

+                if (CONST_Search_NameOnlySearchFrequencyThreshold) {
+                    $oSearch->bRareName =
+                        $oSearchTerm->iSearchNameCount
+                          < CONST_Search_NameOnlySearchFrequencyThreshold;
+                }

                 $aNewSearches[] = $oSearch;
             }
         }
                 $aNewSearches[] = $oSearch;
             }
         }


@@ -302,7 +308,8 @@ class SearchDescription
     /**
      * Derive new searches by adding a partial term to the existing search.
      *
     /**
      * Derive new searches by adding a partial term to the existing search.
      *

-     * @param mixed[] $aSearchTerm        Description of the token.
+     * @param string  $sToken             Term for the token.
+     * @param object  $oSearchTerm        Description of the token.

      * @param bool    $bStructuredPhrases True if the search is structured.
      * @param integer $iPhrase            Number of the phrase the token is in.
      * @param array[] $aFullTokens        List of full term tokens with the
      * @param bool    $bStructuredPhrases True if the search is structured.
      * @param integer $iPhrase            Number of the phrase the token is in.
      * @param array[] $aFullTokens        List of full term tokens with the


@@ -310,21 +317,21 @@ class SearchDescription
      *
      * @return SearchDescription[] List of derived search descriptions.
      */
      *
      * @return SearchDescription[] List of derived search descriptions.
      */

-    public function extendWithPartialTerm($aSearchTerm, $bStructuredPhrases, $iPhrase, $aFullTokens)
+    public function extendWithPartialTerm($sToken, $oSearchTerm, $bStructuredPhrases, $iPhrase, $aFullTokens)

     {
         // Only allow name terms.
     {
         // Only allow name terms.

-        if (!(isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])) {
+        if (!(is_a($oSearchTerm, '\Nominatim\Token\Word'))) {

             return array();
         }
 
         $aNewSearches = array();
             return array();
         }
 
         $aNewSearches = array();

-        $iWordID = $aSearchTerm['word_id'];
+        $iWordID = $oSearchTerm->iId;

 
         if ((!$bStructuredPhrases || $iPhrase > 0)
             && (!empty($this->aName))
 
         if ((!$bStructuredPhrases || $iPhrase > 0)
             && (!empty($this->aName))

-            && strpos($aSearchTerm['word_token'], ' ') === false
+            && strpos($sToken, ' ') === false

         ) {
         ) {

-            if ($aSearchTerm['search_name_count'] + 1 < CONST_Max_Word_Frequency) {
+            if ($oSearchTerm->iSearchNameCount < CONST_Max_Word_Frequency) {

                 $oSearch = clone $this;
                 $oSearch->iSearchRank += 2;
                 $oSearch->aAddress[$iWordID] = $iWordID;
                 $oSearch = clone $this;
                 $oSearch->iSearchRank += 2;
                 $oSearch->aAddress[$iWordID] = $iWordID;


@@ -333,7 +340,7 @@ class SearchDescription
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;
                 $oSearch->aAddressNonSearch[$iWordID] = $iWordID;
                 $oSearch = clone $this;
                 $oSearch->iSearchRank++;
                 $oSearch->aAddressNonSearch[$iWordID] = $iWordID;

-                if (preg_match('#^[0-9]+$#', $aSearchTerm['word_token'])) {
+                if (preg_match('#^[0-9]+$#', $sToken)) {

                     $oSearch->iSearchRank += 2;
                 }
                 if (!empty($aFullTokens)) {
                     $oSearch->iSearchRank += 2;
                 }
                 if (!empty($aFullTokens)) {


@@ -342,14 +349,12 @@ class SearchDescription
                 $aNewSearches[] = $oSearch;
 
                 // revert to the token version?
                 $aNewSearches[] = $oSearch;
 
                 // revert to the token version?

-                foreach ($aFullTokens as $aSearchTermToken) {
-                    if (empty($aSearchTermToken['country_code'])
-                        && empty($aSearchTermToken['lat'])
-                        && empty($aSearchTermToken['class'])
-                    ) {
+                foreach ($aFullTokens as $oSearchTermToken) {
+                    if (is_a($oSearchTermToken, '\Nominatim\Token\Word')) {

                         $oSearch = clone $this;
                         $oSearch->iSearchRank++;
                         $oSearch = clone $this;
                         $oSearch->iSearchRank++;

-                        $oSearch->aAddress[$aSearchTermToken['word_id']] = $aSearchTermToken['word_id'];
+                        $oSearch->aAddress[$oSearchTermToken->iId]
+                            = $oSearchTermToken->iId;

                         $aNewSearches[] = $oSearch;
                     }
                 }
                         $aNewSearches[] = $oSearch;
                     }
                 }


@@ -364,10 +369,19 @@ class SearchDescription
             if (empty($this->aName)) {
                 $oSearch->iSearchRank += 1;
             }
             if (empty($this->aName)) {
                 $oSearch->iSearchRank += 1;
             }

-            if (preg_match('#^[0-9]+$#', $aSearchTerm['word_token'])) {
+            if (preg_match('#^[0-9]+$#', $sToken)) {

                 $oSearch->iSearchRank += 2;
             }
                 $oSearch->iSearchRank += 2;
             }

-            if ($aSearchTerm['search_name_count'] + 1 < CONST_Max_Word_Frequency) {
+            if ($oSearchTerm->iSearchNameCount < CONST_Max_Word_Frequency) {
+                if (empty($this->aName)
+                    && CONST_Search_NameOnlySearchFrequencyThreshold
+                ) {
+                    $oSearch->bRareName =
+                        $oSearchTerm->iSearchNameCount
+                          < CONST_Search_NameOnlySearchFrequencyThreshold;
+                } else {
+                    $oSearch->bRareName = false;
+                }

                 $oSearch->aName[$iWordID] = $iWordID;
             } else {
                 $oSearch->aNameNonSearch[$iWordID] = $iWordID;
                 $oSearch->aName[$iWordID] = $iWordID;
             } else {
                 $oSearch->aNameNonSearch[$iWordID] = $iWordID;


@@ -385,20 +399,16 @@ class SearchDescription
     /**
      * Query database for places that match this search.
      *
     /**
      * Query database for places that match this search.
      *

-     * @param object  $oDB                  Database connection to use.
-     * @param mixed[] $aWordFrequencyScores Number of times tokens appears
-     *                                      overall in a planet database.
-     * @param integer $iMinRank             Minimum address rank to restrict
-     *                                      search to.
-     * @param integer $iMaxRank             Maximum address rank to restrict
-     *                                      search to.
-     * @param integer $iLimit               Maximum number of results.
+     * @param object  $oDB      Nominatim::DB instance to use.
+     * @param integer $iMinRank Minimum address rank to restrict search to.
+     * @param integer $iMaxRank Maximum address rank to restrict search to.
+     * @param integer $iLimit   Maximum number of results.

      *
      * @return mixed[] An array with two fields: IDs contains the list of
      *                 matching place IDs and houseNumber the houseNumber
      *                 if appicable or -1 if not.
      */
      *
      * @return mixed[] An array with two fields: IDs contains the list of
      *                 matching place IDs and houseNumber the houseNumber
      *                 if appicable or -1 if not.
      */

-    public function query(&$oDB, &$aWordFrequencyScores, $iMinRank, $iMaxRank, $iLimit)
+    public function query(&$oDB, $iMinRank, $iMaxRank, $iLimit)

     {
         $aResults = array();
         $iHousenumber = -1;
     {
         $aResults = array();
         $iHousenumber = -1;


@@ -427,19 +437,25 @@ class SearchDescription
             // First search for places according to name and address.
             $aResults = $this->queryNamedPlace(
                 $oDB,
             // First search for places according to name and address.
             $aResults = $this->queryNamedPlace(
                 $oDB,

-                $aWordFrequencyScores,

                 $iMinRank,
                 $iMaxRank,
                 $iLimit
             );
 
                 $iMinRank,
                 $iMaxRank,
                 $iLimit
             );
 

-            //now search for housenumber, if housenumber provided
-            if ($this->sHouseNumber && !empty($aResults)) {
-                $aNamedPlaceIDs = $aResults;
-                $aResults = $this->queryHouseNumber($oDB, $aNamedPlaceIDs, $iLimit);
+            // Now search for housenumber, if housenumber provided. Can be zero.
+            if (($this->sHouseNumber || $this->sHouseNumber === '0') && !empty($aResults)) {
+                // Downgrade the rank of the street results, they are missing
+                // the housenumber.
+                foreach ($aResults as $oRes) {
+                    $oRes->iResultRank++;
+                }
+
+                $aHnResults = $this->queryHouseNumber($oDB, $aResults);

 
 

-                if (empty($aResults) && $this->looksLikeFullAddress()) {
-                    $aResults = $aNamedPlaceIDs;
+                if (!empty($aHnResults)) {
+                    foreach ($aHnResults as $oRes) {
+                        $aResults[$oRes->iId] = $oRes;
+                    }

                 }
             }
 
                 }
             }
 


@@ -456,16 +472,13 @@ class SearchDescription
             if ($sPlaceIds) {
                 $sSQL = 'SELECT place_id FROM placex';
                 $sSQL .= ' WHERE place_id in ('.$sPlaceIds.')';
             if ($sPlaceIds) {
                 $sSQL = 'SELECT place_id FROM placex';
                 $sSQL .= ' WHERE place_id in ('.$sPlaceIds.')';

-                $sSQL .= " AND postcode = '".$this->sPostcode."'";
+                $sSQL .= " AND postcode != '".$this->sPostcode."'";

                 Debug::printSQL($sSQL);
                 Debug::printSQL($sSQL);

-                $aFilteredPlaceIDs = chksql($oDB->getCol($sSQL));
+                $aFilteredPlaceIDs = $oDB->getCol($sSQL);

                 if ($aFilteredPlaceIDs) {
                 if ($aFilteredPlaceIDs) {

-                    $aNewResults = array();

                     foreach ($aFilteredPlaceIDs as $iPlaceId) {
                     foreach ($aFilteredPlaceIDs as $iPlaceId) {

-                        $aNewResults[$iPlaceId] = $aResults[$iPlaceId];
+                        $aResults[$iPlaceId]->iResultRank++;

                     }
                     }

-                    $aResults = $aNewResults;
-                    Debug::printVar('Place IDs after postcode filtering', $aResults);

                 }
             }
         }
                 }
             }
         }


@@ -486,8 +499,10 @@ class SearchDescription
 
         Debug::printSQL($sSQL);
 
 
         Debug::printSQL($sSQL);
 

+        $iPlaceId = $oDB->getOne($sSQL);
+

         $aResults = array();
         $aResults = array();

-        foreach (chksql($oDB->getCol($sSQL)) as $iPlaceId) {
+        if ($iPlaceId) {

             $aResults[$iPlaceId] = new Result($iPlaceId);
         }
 
             $aResults[$iPlaceId] = new Result($iPlaceId);
         }
 


@@ -503,8 +518,7 @@ class SearchDescription
         $aDBResults = array();
         $sPoiTable = $this->poiTable();
 
         $aDBResults = array();
         $sPoiTable = $this->poiTable();
 

-        $sSQL = 'SELECT count(*) FROM pg_tables WHERE tablename = \''.$sPoiTable."'";
-        if (chksql($oDB->getOne($sSQL))) {
+        if ($oDB->tableExists($sPoiTable)) {

             $sSQL = 'SELECT place_id FROM '.$sPoiTable.' ct';
             if ($this->oContext->sqlCountryList) {
                 $sSQL .= ' JOIN placex USING (place_id)';
             $sSQL = 'SELECT place_id FROM '.$sPoiTable.' ct';
             if ($this->oContext->sqlCountryList) {
                 $sSQL .= ' JOIN placex USING (place_id)';


@@ -524,14 +538,14 @@ class SearchDescription
             } elseif ($this->oContext->hasNearPoint()) {
                 $sSQL .= ' ORDER BY '.$this->oContext->distanceSQL('ct.centroid').' ASC';
             }
             } elseif ($this->oContext->hasNearPoint()) {
                 $sSQL .= ' ORDER BY '.$this->oContext->distanceSQL('ct.centroid').' ASC';
             }

-            $sSQL .= " limit $iLimit";
+            $sSQL .= " LIMIT $iLimit";

             Debug::printSQL($sSQL);
             Debug::printSQL($sSQL);

-            $aDBResults = chksql($oDB->getCol($sSQL));
+            $aDBResults = $oDB->getCol($sSQL);

         }
 
         if ($this->oContext->hasNearPoint()) {
             $sSQL = 'SELECT place_id FROM placex WHERE ';
         }
 
         if ($this->oContext->hasNearPoint()) {
             $sSQL = 'SELECT place_id FROM placex WHERE ';

-            $sSQL .= 'class=\''.$this->sClass."' and type='".$this->sType."'";
+            $sSQL .= 'class = :class and type = :type';

             $sSQL .= ' AND '.$this->oContext->withinSQL('geometry');
             $sSQL .= ' AND linked_place_id is null';
             if ($this->oContext->sqlCountryList) {
             $sSQL .= ' AND '.$this->oContext->withinSQL('geometry');
             $sSQL .= ' AND linked_place_id is null';
             if ($this->oContext->sqlCountryList) {


@@ -540,7 +554,10 @@ class SearchDescription
             $sSQL .= ' ORDER BY '.$this->oContext->distanceSQL('centroid').' ASC';
             $sSQL .= " LIMIT $iLimit";
             Debug::printSQL($sSQL);
             $sSQL .= ' ORDER BY '.$this->oContext->distanceSQL('centroid').' ASC';
             $sSQL .= " LIMIT $iLimit";
             Debug::printSQL($sSQL);

-            $aDBResults = chksql($oDB->getCol($sSQL));
+            $aDBResults = $oDB->getCol(
+                $sSQL,
+                array(':class' => $this->sClass, ':type' => $this->sType)
+            );

         }
 
         $aResults = array();
         }
 
         $aResults = array();


@@ -559,32 +576,39 @@ class SearchDescription
             $sSQL .= ', search_name s ';
             $sSQL .= 'WHERE s.place_id = p.parent_place_id ';
             $sSQL .= 'AND array_cat(s.nameaddress_vector, s.name_vector)';
             $sSQL .= ', search_name s ';
             $sSQL .= 'WHERE s.place_id = p.parent_place_id ';
             $sSQL .= 'AND array_cat(s.nameaddress_vector, s.name_vector)';

-            $sSQL .= '      @> '.getArraySQL($this->aAddress).' AND ';
+            $sSQL .= '      @> '.$oDB->getArraySQL($this->aAddress).' AND ';

         } else {
             $sSQL .= 'WHERE ';
         }
 
         $sSQL .= "p.postcode = '".reset($this->aName)."'";
         $sSQL .= $this->countryCodeSQL(' AND p.country_code');
         } else {
             $sSQL .= 'WHERE ';
         }
 
         $sSQL .= "p.postcode = '".reset($this->aName)."'";
         $sSQL .= $this->countryCodeSQL(' AND p.country_code');

+        if ($this->oContext->bViewboxBounded) {
+            $sSQL .= ' AND ST_Intersects('.$this->oContext->sqlViewboxSmall.', geometry)';
+        }

         $sSQL .= $this->oContext->excludeSQL(' AND p.place_id');
         $sSQL .= " LIMIT $iLimit";
 
         Debug::printSQL($sSQL);
 
         $aResults = array();
         $sSQL .= $this->oContext->excludeSQL(' AND p.place_id');
         $sSQL .= " LIMIT $iLimit";
 
         Debug::printSQL($sSQL);
 
         $aResults = array();

-        foreach (chksql($oDB->getCol($sSQL)) as $iPlaceId) {
+        foreach ($oDB->getCol($sSQL) as $iPlaceId) {

             $aResults[$iPlaceId] = new Result($iPlaceId, Result::TABLE_POSTCODE);
         }
 
         return $aResults;
     }
 
             $aResults[$iPlaceId] = new Result($iPlaceId, Result::TABLE_POSTCODE);
         }
 
         return $aResults;
     }
 

-    private function queryNamedPlace(&$oDB, $aWordFrequencyScores, $iMinAddressRank, $iMaxAddressRank, $iLimit)
+    private function queryNamedPlace(&$oDB, $iMinAddressRank, $iMaxAddressRank, $iLimit)

     {
         $aTerms = array();
         $aOrder = array();
 
     {
         $aTerms = array();
         $aOrder = array();
 

-        if ($this->sHouseNumber && !empty($this->aAddress)) {
+        // Sort by existence of the requested house number but only if not
+        // too many results are expected for the street, i.e. if the result
+        // will be narrowed down by an address. Remeber that with ordering
+        // every single result has to be checked.
+        if ($this->sHouseNumber && (!empty($this->aAddress) || $this->sPostcode)) {

             $sHouseNumberRegex = '\\\\m'.$this->sHouseNumber.'\\\\M';
             $aOrder[] = ' (';
             $aOrder[0] .= 'EXISTS(';
             $sHouseNumberRegex = '\\\\m'.$this->sHouseNumber.'\\\\M';
             $aOrder[] = ' (';
             $aOrder[0] .= 'EXISTS(';


@@ -611,18 +635,14 @@ class SearchDescription
         }
 
         if (!empty($this->aName)) {
         }
 
         if (!empty($this->aName)) {

-            $aTerms[] = 'name_vector @> '.getArraySQL($this->aName);
+            $aTerms[] = 'name_vector @> '.$oDB->getArraySQL($this->aName);

         }
         if (!empty($this->aAddress)) {
             // For infrequent name terms disable index usage for address
         }
         if (!empty($this->aAddress)) {
             // For infrequent name terms disable index usage for address

-            if (CONST_Search_NameOnlySearchFrequencyThreshold
-                && count($this->aName) == 1
-                && $aWordFrequencyScores[$this->aName[reset($this->aName)]]
-                     < CONST_Search_NameOnlySearchFrequencyThreshold
-            ) {
-                $aTerms[] = 'array_cat(nameaddress_vector,ARRAY[]::integer[]) @> '.getArraySQL($this->aAddress);
+            if ($this->bRareName) {
+                $aTerms[] = 'array_cat(nameaddress_vector,ARRAY[]::integer[]) @> '.$oDB->getArraySQL($this->aAddress);

             } else {
             } else {

-                $aTerms[] = 'nameaddress_vector @> '.getArraySQL($this->aAddress);
+                $aTerms[] = 'nameaddress_vector @> '.$oDB->getArraySQL($this->aAddress);

             }
         }
 
             }
         }
 


@@ -632,13 +652,10 @@ class SearchDescription
         }
 
         if ($this->sHouseNumber) {
         }
 
         if ($this->sHouseNumber) {

-            $aTerms[] = 'address_rank between 16 and 27';
+            $aTerms[] = 'address_rank between 16 and 30';

         } elseif (!$this->sClass || $this->iOperator == Operator::NAME) {
             if ($iMinAddressRank > 0) {
         } elseif (!$this->sClass || $this->iOperator == Operator::NAME) {
             if ($iMinAddressRank > 0) {

-                $aTerms[] = 'address_rank >= '.$iMinAddressRank;
-            }
-            if ($iMaxAddressRank < 30) {
-                $aTerms[] = 'address_rank <= '.$iMaxAddressRank;
+                $aTerms[] = "((address_rank between $iMinAddressRank and $iMaxAddressRank) or (search_rank between $iMinAddressRank and $iMaxAddressRank))";

             }
         }
 
             }
         }
 


@@ -677,7 +694,7 @@ class SearchDescription
         if (!empty($this->aFullNameAddress)) {
             $sExactMatchSQL = ' ( ';
             $sExactMatchSQL .= ' SELECT count(*) FROM ( ';
         if (!empty($this->aFullNameAddress)) {
             $sExactMatchSQL = ' ( ';
             $sExactMatchSQL .= ' SELECT count(*) FROM ( ';

-            $sExactMatchSQL .= '  SELECT unnest('.getArraySQL($this->aFullNameAddress).')';
+            $sExactMatchSQL .= '  SELECT unnest('.$oDB->getArraySQL($this->aFullNameAddress).')';

             $sExactMatchSQL .= '    INTERSECT ';
             $sExactMatchSQL .= '  SELECT unnest(nameaddress_vector)';
             $sExactMatchSQL .= ' ) s';
             $sExactMatchSQL .= '    INTERSECT ';
             $sExactMatchSQL .= '  SELECT unnest(nameaddress_vector)';
             $sExactMatchSQL .= ' ) s';


@@ -688,7 +705,7 @@ class SearchDescription
         }
 
         if ($this->sHouseNumber || $this->sClass) {
         }
 
         if ($this->sHouseNumber || $this->sClass) {

-            $iLimit = 20;
+            $iLimit = 40;

         }
 
         $aResults = array();
         }
 
         $aResults = array();


@@ -702,10 +719,7 @@ class SearchDescription
 
             Debug::printSQL($sSQL);
 
 
             Debug::printSQL($sSQL);
 

-            $aDBResults = chksql(
-                $oDB->getAll($sSQL),
-                'Could not get places for search terms.'
-            );
+            $aDBResults = $oDB->getAll($sSQL, null, 'Could not get places for search terms.');

 
             foreach ($aDBResults as $aResult) {
                 $oResult = new Result($aResult['place_id']);
 
             foreach ($aDBResults as $aResult) {
                 $oResult = new Result($aResult['place_id']);


@@ -717,7 +731,7 @@ class SearchDescription
         return $aResults;
     }
 
         return $aResults;
     }
 

-    private function queryHouseNumber(&$oDB, $aRoadPlaceIDs, $iLimit)
+    private function queryHouseNumber(&$oDB, $aRoadPlaceIDs)

     {
         $aResults = array();
         $sPlaceIDs = Result::joinIdsByTable($aRoadPlaceIDs, Result::TABLE_PLACEX);
     {
         $aResults = array();
         $sPlaceIDs = Result::joinIdsByTable($aRoadPlaceIDs, Result::TABLE_PLACEX);


@@ -731,12 +745,11 @@ class SearchDescription
         $sSQL .= 'WHERE parent_place_id in ('.$sPlaceIDs.')';
         $sSQL .= "  AND transliteration(housenumber) ~* E'".$sHouseNumberRegex."'";
         $sSQL .= $this->oContext->excludeSQL(' AND place_id');
         $sSQL .= 'WHERE parent_place_id in ('.$sPlaceIDs.')';
         $sSQL .= "  AND transliteration(housenumber) ~* E'".$sHouseNumberRegex."'";
         $sSQL .= $this->oContext->excludeSQL(' AND place_id');

-        $sSQL .= " LIMIT $iLimit";

 
         Debug::printSQL($sSQL);
 
         // XXX should inherit the exactMatches from its parent
 
         Debug::printSQL($sSQL);
 
         // XXX should inherit the exactMatches from its parent

-        foreach (chksql($oDB->getCol($sSQL)) as $iPlaceId) {
+        foreach ($oDB->getCol($sSQL) as $iPlaceId) {

             $aResults[$iPlaceId] = new Result($iPlaceId);
         }
 
             $aResults[$iPlaceId] = new Result($iPlaceId);
         }
 


@@ -759,11 +772,10 @@ class SearchDescription
             $sSQL .= $iHousenumber.'>=startnumber and ';
             $sSQL .= $iHousenumber.'<=endnumber';
             $sSQL .= $this->oContext->excludeSQL(' AND place_id');
             $sSQL .= $iHousenumber.'>=startnumber and ';
             $sSQL .= $iHousenumber.'<=endnumber';
             $sSQL .= $this->oContext->excludeSQL(' AND place_id');

-            $sSQL .= " limit $iLimit";

 
             Debug::printSQL($sSQL);
 
 
             Debug::printSQL($sSQL);
 

-            foreach (chksql($oDB->getCol($sSQL)) as $iPlaceId) {
+            foreach ($oDB->getCol($sSQL) as $iPlaceId) {

                 $oResult = new Result($iPlaceId, Result::TABLE_OSMLINE);
                 $oResult->iHouseNumber = $iHousenumber;
                 $aResults[$iPlaceId] = $oResult;
                 $oResult = new Result($iPlaceId, Result::TABLE_OSMLINE);
                 $oResult->iHouseNumber = $iHousenumber;
                 $aResults[$iPlaceId] = $oResult;


@@ -776,11 +788,10 @@ class SearchDescription
             $sSQL .= ' WHERE parent_place_id in ('.$sPlaceIDs.')';
             $sSQL .= " AND housenumber = '".$this->sHouseNumber."'";
             $sSQL .= $this->oContext->excludeSQL(' AND place_id');
             $sSQL .= ' WHERE parent_place_id in ('.$sPlaceIDs.')';
             $sSQL .= " AND housenumber = '".$this->sHouseNumber."'";
             $sSQL .= $this->oContext->excludeSQL(' AND place_id');

-            $sSQL .= " limit $iLimit";

 
             Debug::printSQL($sSQL);
 
 
             Debug::printSQL($sSQL);
 

-            foreach (chksql($oDB->getCol($sSQL)) as $iPlaceId) {
+            foreach ($oDB->getCol($sSQL) as $iPlaceId) {

                 $aResults[$iPlaceId] = new Result($iPlaceId, Result::TABLE_AUX);
             }
         }
                 $aResults[$iPlaceId] = new Result($iPlaceId, Result::TABLE_AUX);
             }
         }


@@ -798,11 +809,10 @@ class SearchDescription
             $sSQL .= $iHousenumber.'>=startnumber and ';
             $sSQL .= $iHousenumber.'<=endnumber';
             $sSQL .= $this->oContext->excludeSQL(' AND place_id');
             $sSQL .= $iHousenumber.'>=startnumber and ';
             $sSQL .= $iHousenumber.'<=endnumber';
             $sSQL .= $this->oContext->excludeSQL(' AND place_id');

-            $sSQL .= " limit $iLimit";

 
             Debug::printSQL($sSQL);
 
 
             Debug::printSQL($sSQL);
 

-            foreach (chksql($oDB->getCol($sSQL)) as $iPlaceId) {
+            foreach ($oDB->getCol($sSQL) as $iPlaceId) {

                 $oResult = new Result($iPlaceId, Result::TABLE_TIGER);
                 $oResult->iHouseNumber = $iHousenumber;
                 $aResults[$iPlaceId] = $oResult;
                 $oResult = new Result($iPlaceId, Result::TABLE_TIGER);
                 $oResult->iHouseNumber = $iHousenumber;
                 $aResults[$iPlaceId] = $oResult;


@@ -836,7 +846,7 @@ class SearchDescription
 
             Debug::printSQL($sSQL);
 
 
             Debug::printSQL($sSQL);
 

-            foreach (chksql($oDB->getCol($sSQL)) as $iPlaceId) {
+            foreach ($oDB->getCol($sSQL) as $iPlaceId) {

                 $aResults[$iPlaceId] = new Result($iPlaceId);
             }
         }
                 $aResults[$iPlaceId] = new Result($iPlaceId);
             }
         }


@@ -844,12 +854,11 @@ class SearchDescription
         // NEAR and IN are handled the same
         if ($this->iOperator == Operator::TYPE || $this->iOperator == Operator::NEAR) {
             $sClassTable = $this->poiTable();
         // NEAR and IN are handled the same
         if ($this->iOperator == Operator::TYPE || $this->iOperator == Operator::NEAR) {
             $sClassTable = $this->poiTable();

-            $sSQL = "SELECT count(*) FROM pg_tables WHERE tablename = '$sClassTable'";
-            $bCacheTable = (bool) chksql($oDB->getOne($sSQL));
+            $bCacheTable = $oDB->tableExists($sClassTable);

 
             $sSQL = "SELECT min(rank_search) FROM placex WHERE place_id in ($sPlaceIDs)";
             Debug::printSQL($sSQL);
 
             $sSQL = "SELECT min(rank_search) FROM placex WHERE place_id in ($sPlaceIDs)";
             Debug::printSQL($sSQL);

-            $iMaxRank = (int)chksql($oDB->getOne($sSQL));
+            $iMaxRank = (int) $oDB->getOne($sSQL);

 
             // For state / country level searches the normal radius search doesn't work very well
             $sPlaceGeom = false;
 
             // For state / country level searches the normal radius search doesn't work very well
             $sPlaceGeom = false;


@@ -862,7 +871,7 @@ class SearchDescription
                 $sSQL .= ' ORDER BY rank_search ASC ';
                 $sSQL .= ' LIMIT 1';
                 Debug::printSQL($sSQL);
                 $sSQL .= ' ORDER BY rank_search ASC ';
                 $sSQL .= ' LIMIT 1';
                 Debug::printSQL($sSQL);

-                $sPlaceGeom = chksql($oDB->getOne($sSQL));
+                $sPlaceGeom = $oDB->getOne($sSQL);

             }
 
             if ($sPlaceGeom) {
             }
 
             if ($sPlaceGeom) {


@@ -872,7 +881,7 @@ class SearchDescription
                 $sSQL = 'SELECT place_id FROM placex';
                 $sSQL .= " WHERE place_id in ($sPlaceIDs) and rank_search < $iMaxRank";
                 Debug::printSQL($sSQL);
                 $sSQL = 'SELECT place_id FROM placex';
                 $sSQL .= " WHERE place_id in ($sPlaceIDs) and rank_search < $iMaxRank";
                 Debug::printSQL($sSQL);

-                $aPlaceIDs = chksql($oDB->getCol($sSQL));
+                $aPlaceIDs = $oDB->getCol($sSQL);

                 $sPlaceIDs = join(',', $aPlaceIDs);
             }
 
                 $sPlaceIDs = join(',', $aPlaceIDs);
             }
 


@@ -918,7 +927,7 @@ class SearchDescription
 
                     Debug::printSQL($sSQL);
 
 
                     Debug::printSQL($sSQL);
 

-                    foreach (chksql($oDB->getCol($sSQL)) as $iPlaceId) {
+                    foreach ($oDB->getCol($sSQL) as $iPlaceId) {

                         $aResults[$iPlaceId] = new Result($iPlaceId);
                     }
                 } else {
                         $aResults[$iPlaceId] = new Result($iPlaceId);
                     }
                 } else {


@@ -950,7 +959,7 @@ class SearchDescription
 
                     Debug::printSQL($sSQL);
 
 
                     Debug::printSQL($sSQL);
 

-                    foreach (chksql($oDB->getCol($sSQL)) as $iPlaceId) {
+                    foreach ($oDB->getCol($sSQL) as $iPlaceId) {

                         $aResults[$iPlaceId] = new Result($iPlaceId);
                     }
                 }
                         $aResults[$iPlaceId] = new Result($iPlaceId);
                     }
                 }