]> git.openstreetmap.org Git - nominatim.git/commitdiff
fully evaluate reverse order of queries
authorSarah Hoffmann <lonvia@denofr.de>
Thu, 30 Oct 2014 22:00:47 +0000 (23:00 +0100)
committerSarah Hoffmann <lonvia@denofr.de>
Wed, 21 Jan 2015 20:40:38 +0000 (21:40 +0100)
Factors out computation of search group and calls the code once
for forward evaluation and wants with reversed word order.

lib/Geocode.php
lib/lib.php

index 7f00de6e2f054c980adef55425c5f422fb6bc5d0..1fbbd5c59250b2677b773d79d169e1269c5ce6a0 100644 (file)
                        return $aSearchResults;
                }
 
+               function getGroupedSearches($aSearches, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases)
+               {
+                       /*
+                          Calculate all searches using aValidTokens i.e.
+                          'Wodsworth Road, Sheffield' =>
+
+                          Phrase Wordset
+                          0      0       (wodsworth road)
+                          0      1       (wodsworth)(road)
+                          1      0       (sheffield)
+
+                          Score how good the search is so they can be ordered
+                        */
+                       foreach($aPhrases as $iPhrase => $sPhrase)
+                       {
+                               $aNewPhraseSearches = array();
+                               if ($bStructuredPhrases) $sPhraseType = $aPhraseTypes[$iPhrase];
+                               else $sPhraseType = '';
+
+                               foreach($aPhrases[$iPhrase]['wordsets'] as $iWordSet => $aWordset)
+                               {
+                                       // Too many permutations - too expensive
+                                       if ($iWordSet > 120) break;
+
+                                       $aWordsetSearches = $aSearches;
+
+                                       // Add all words from this wordset
+                                       foreach($aWordset as $iToken => $sToken)
+                                       {
+                                               //echo "<br><b>$sToken</b>";
+                                               $aNewWordsetSearches = array();
+
+                                               foreach($aWordsetSearches as $aCurrentSearch)
+                                               {
+                                                       //echo "<i>";
+                                                       //var_dump($aCurrentSearch);
+                                                       //echo "</i>";
+
+                                                       // If the token is valid
+                                                       if (isset($aValidTokens[' '.$sToken]))
+                                                       {
+                                                               foreach($aValidTokens[' '.$sToken] as $aSearchTerm)
+                                                               {
+                                                                       $aSearch = $aCurrentSearch;
+                                                                       $aSearch['iSearchRank']++;
+                                                                       if (($sPhraseType == '' || $sPhraseType == 'country') && !empty($aSearchTerm['country_code']) && $aSearchTerm['country_code'] != '0')
+                                                                       {
+                                                                               if ($aSearch['sCountryCode'] === false)
+                                                                               {
+                                                                                       $aSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
+                                                                                       // Country is almost always at the end of the string - increase score for finding it anywhere else (optimisation)
+                                                                                       if (($iToken+1 != sizeof($aWordset) || $iPhrase+1 != sizeof($aPhrases)))
+                                                                                       {
+                                                                                               $aSearch['iSearchRank'] += 5;
+                                                                                       }
+                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                               }
+                                                                       }
+                                                                       elseif (isset($aSearchTerm['lat']) && $aSearchTerm['lat'] !== '' && $aSearchTerm['lat'] !== null)
+                                                                       {
+                                                                               if ($aSearch['fLat'] === '')
+                                                                               {
+                                                                                       $aSearch['fLat'] = $aSearchTerm['lat'];
+                                                                                       $aSearch['fLon'] = $aSearchTerm['lon'];
+                                                                                       $aSearch['fRadius'] = $aSearchTerm['radius'];
+                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                               }
+                                                                       }
+                                                                       elseif ($sPhraseType == 'postalcode')
+                                                                       {
+                                                                               // 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 (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
+                                                                               {
+                                                                                       // If we already have a name try putting the postcode first
+                                                                                       if (sizeof($aSearch['aName']))
+                                                                                       {
+                                                                                               $aNewSearch = $aSearch;
+                                                                                               $aNewSearch['aAddress'] = array_merge($aNewSearch['aAddress'], $aNewSearch['aName']);
+                                                                                               $aNewSearch['aName'] = array();
+                                                                                               $aNewSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aNewSearch;
+                                                                                       }
+
+                                                                                       if (sizeof($aSearch['aName']))
+                                                                                       {
+                                                                                               if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
+                                                                                               {
+                                                                                                       $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                               }
+                                                                                               else
+                                                                                               {
+                                                                                                       $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                                       $aSearch['iSearchRank'] += 1000; // skip;
+                                                                                               }
+                                                                                       }
+                                                                                       else
+                                                                                       {
+                                                                                               $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                               //$aSearch['iNamePhrase'] = $iPhrase;
+                                                                                       }
+                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                               }
+
+                                                                       }
+                                                                       elseif (($sPhraseType == '' || $sPhraseType == 'street') && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'house')
+                                                                       {
+                                                                               if ($aSearch['sHouseNumber'] === '')
+                                                                               {
+                                                                                       $aSearch['sHouseNumber'] = $sToken;
+                                                                                       // sanity check: if the housenumber is not mainly made
+                                                                                       // up of numbers, add a penalty
+                                                                                       if (preg_match_all("/[^0-9]/", $sToken, $aMatches) > 2) $aSearch['iSearchRank']++;
+                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                                       /*
+                                                                                       // Fall back to not searching for this item (better than nothing)
+                                                                                       $aSearch = $aCurrentSearch;
+                                                                                       $aSearch['iSearchRank'] += 1;
+                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                                        */
+                                                                               }
+                                                                       }
+                                                                       elseif ($sPhraseType == '' && $aSearchTerm['class'] !== '' && $aSearchTerm['class'] !== null)
+                                                                       {
+                                                                               if ($aSearch['sClass'] === '')
+                                                                               {
+                                                                                       $aSearch['sOperator'] = $aSearchTerm['operator'];
+                                                                                       $aSearch['sClass'] = $aSearchTerm['class'];
+                                                                                       $aSearch['sType'] = $aSearchTerm['type'];
+                                                                                       if (sizeof($aSearch['aName'])) $aSearch['sOperator'] = 'name';
+                                                                                       else $aSearch['sOperator'] = 'near'; // near = in for the moment
+                                                                                       if (strlen($aSearchTerm['operator']) == 0) $aSearch['iSearchRank'] += 1;
+
+                                                                                       // Do we have a shortcut id?
+                                                                                       if ($aSearch['sOperator'] == 'name')
+                                                                                       {
+                                                                                               $sSQL = "select get_tagpair('".$aSearch['sClass']."', '".$aSearch['sType']."')";
+                                                                                               if ($iAmenityID = $this->oDB->getOne($sSQL))
+                                                                                               {
+                                                                                                       $aValidTokens[$aSearch['sClass'].':'.$aSearch['sType']] = array('word_id' => $iAmenityID);
+                                                                                                       $aSearch['aName'][$iAmenityID] = $iAmenityID;
+                                                                                                       $aSearch['sClass'] = '';
+                                                                                                       $aSearch['sType'] = '';
+                                                                                               }
+                                                                                       }
+                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                               }
+                                                                       }
+                                                                       elseif (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
+                                                                       {
+                                                                               if (sizeof($aSearch['aName']))
+                                                                               {
+                                                                                       if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
+                                                                                       {
+                                                                                               $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                       }
+                                                                                       else
+                                                                                       {
+                                                                                               $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                               $aSearch['iSearchRank'] += 1000; // skip;
+                                                                                       }
+                                                                               }
+                                                                               else
+                                                                               {
+                                                                                       $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                       //$aSearch['iNamePhrase'] = $iPhrase;
+                                                                               }
+                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                       }
+                                                               }
+                                                       }
+                                                       if (isset($aValidTokens[$sToken]))
+                                                       {
+                                                               // Allow searching for a word - but at extra cost
+                                                               foreach($aValidTokens[$sToken] as $aSearchTerm)
+                                                               {
+                                                                       if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
+                                                                       {
+                                                                               if ((!$bStructuredPhrases || $iPhrase > 0) && sizeof($aCurrentSearch['aName']) && strpos($sToken, ' ') === false)
+                                                                               {
+                                                                                       $aSearch = $aCurrentSearch;
+                                                                                       $aSearch['iSearchRank'] += 1;
+                                                                                       if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
+                                                                                       {
+                                                                                               $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                                       }
+                                                                                       elseif (isset($aValidTokens[' '.$sToken]) && strlen($sToken) >= 4) // revert to the token version?
+                                                                                       {
+                                                                                               $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                               $aSearch['iSearchRank'] += 1;
+                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                                               foreach($aValidTokens[' '.$sToken] as $aSearchTermToken)
+                                                                                               {
+                                                                                                       if (empty($aSearchTermToken['country_code'])
+                                                                                                                       && empty($aSearchTermToken['lat'])
+                                                                                                                       && empty($aSearchTermToken['class']))
+                                                                                                       {
+                                                                                                               $aSearch = $aCurrentSearch;
+                                                                                                               $aSearch['iSearchRank'] += 1;
+                                                                                                               $aSearch['aAddress'][$aSearchTermToken['word_id']] = $aSearchTermToken['word_id'];
+                                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                                                       }
+                                                                                               }
+                                                                                       }
+                                                                                       else
+                                                                                       {
+                                                                                               $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                               if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
+                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                                       }
+                                                                               }
+
+                                                                               if (!sizeof($aCurrentSearch['aName']) || $aCurrentSearch['iNamePhrase'] == $iPhrase)
+                                                                               {
+                                                                                       $aSearch = $aCurrentSearch;
+                                                                                       $aSearch['iSearchRank'] += 1;
+                                                                                       if (!sizeof($aCurrentSearch['aName'])) $aSearch['iSearchRank'] += 1;
+                                                                                       if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
+                                                                                       if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
+                                                                                               $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                       else
+                                                                                               $aSearch['aNameNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
+                                                                                       $aSearch['iNamePhrase'] = $iPhrase;
+                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
+                                                                               }
+                                                                       }
+                                                               }
+                                                       }
+                                                       else
+                                                       {
+                                                               // Allow skipping a word - but at EXTREAM cost
+                                                               //$aSearch = $aCurrentSearch;
+                                                               //$aSearch['iSearchRank']+=100;
+                                                               //$aNewWordsetSearches[] = $aSearch;
+                                                       }
+                                               }
+                                               // Sort and cut
+                                               usort($aNewWordsetSearches, 'bySearchRank');
+                                               $aWordsetSearches = array_slice($aNewWordsetSearches, 0, 50);
+                                       }
+                                       //var_Dump('<hr>',sizeof($aWordsetSearches)); exit;
+
+                                       $aNewPhraseSearches = array_merge($aNewPhraseSearches, $aNewWordsetSearches);
+                                       usort($aNewPhraseSearches, 'bySearchRank');
+
+                                       $aSearchHash = array();
+                                       foreach($aNewPhraseSearches as $iSearch => $aSearch)
+                                       {
+                                               $sHash = serialize($aSearch);
+                                               if (isset($aSearchHash[$sHash])) unset($aNewPhraseSearches[$iSearch]);
+                                               else $aSearchHash[$sHash] = 1;
+                                       }
+
+                                       $aNewPhraseSearches = array_slice($aNewPhraseSearches, 0, 50);
+                               }
+
+                               // Re-group the searches by their score, junk anything over 20 as just not worth trying
+                               $aGroupedSearches = array();
+                               foreach($aNewPhraseSearches as $aSearch)
+                               {
+                                       if ($aSearch['iSearchRank'] < $this->iMaxRank)
+                                       {
+                                               if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
+                                               $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
+                                       }
+                               }
+                               ksort($aGroupedSearches);
+
+                               $iSearchCount = 0;
+                               $aSearches = array();
+                               foreach($aGroupedSearches as $iScore => $aNewSearches)
+                               {
+                                       $iSearchCount += sizeof($aNewSearches);
+                                       $aSearches = array_merge($aSearches, $aNewSearches);
+                                       if ($iSearchCount > 50) break;
+                               }
+
+                               //if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
+
+                       }
+                       return $aGroupedSearches;
+
+               }
+
                /* Perform the actual query lookup.
 
                        Returns an ordered list of results, each with the following fields:
                                        // Start the search process
                                        $aResultPlaceIDs = array();
 
-                                       /*
-                                          Calculate all searches using aValidTokens i.e.
-                                          'Wodsworth Road, Sheffield' =>
-
-                                          Phrase Wordset
-                                          0      0       (wodsworth road)
-                                          0      1       (wodsworth)(road)
-                                          1      0       (sheffield)
+                                       $aGroupedSearches = $this->getGroupedSearches($aSearches, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases);
 
-                                          Score how good the search is so they can be ordered
-                                        */
-                                       foreach($aPhrases as $iPhrase => $sPhrase)
+                                       if ($this->bReverseInPlan)
                                        {
-                                               $aNewPhraseSearches = array();
-                                               if ($bStructuredPhrases) $sPhraseType = $aPhraseTypes[$iPhrase];
-                                               else $sPhraseType = '';
-
-                                               foreach($aPhrases[$iPhrase]['wordsets'] as $iWordSet => $aWordset)
+                                               // 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);
+                                               if (sizeof($aPhrases) > 1)
                                                {
-                                                       // Too many permutations - too expensive
-                                                       if ($iWordSet > 120) break;
-
-                                                       $aWordsetSearches = $aSearches;
+                                                       $aFinalPhrase = end($aPhrases);
+                                                       $aFinalPhrase['wordsets'] = getInverseWordSets($aFinalPhrase['words'], 0);
+                                               }
+                                               $aReverseGroupedSearches = $this->getGroupedSearches($aSearches, $aPhrases, $aValidTokens, $aWordFrequencyScores, false);
 
-                                                       // Add all words from this wordset
-                                                       foreach($aWordset as $iToken => $sToken)
+                                               foreach($aGroupedSearches as $aSearches)
+                                               {
+                                                       foreach($aSearches as $aSearch)
                                                        {
-                                                               //echo "<br><b>$sToken</b>";
-                                                               $aNewWordsetSearches = array();
-
-                                                               foreach($aWordsetSearches as $aCurrentSearch)
+                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank)
                                                                {
-                                                                       //echo "<i>";
-                                                                       //var_dump($aCurrentSearch);
-                                                                       //echo "</i>";
-
-                                                                       // If the token is valid
-                                                                       if (isset($aValidTokens[' '.$sToken]))
-                                                                       {
-                                                                               foreach($aValidTokens[' '.$sToken] as $aSearchTerm)
-                                                                               {
-                                                                                       $aSearch = $aCurrentSearch;
-                                                                                       $aSearch['iSearchRank']++;
-                                                                                       if (($sPhraseType == '' || $sPhraseType == 'country') && !empty($aSearchTerm['country_code']) && $aSearchTerm['country_code'] != '0')
-                                                                                       {
-                                                                                               if ($aSearch['sCountryCode'] === false)
-                                                                                               {
-                                                                                                       $aSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
-                                                                                                       // Country is almost always at the end of the string - increase score for finding it anywhere else (optimisation)
-                                                                                                       // If reverse order is enabled, it may appear at the beginning as well.
-                                                                                                       if (($iToken+1 != sizeof($aWordset) || $iPhrase+1 != sizeof($aPhrases)) &&
-                                                                                                                       (!$this->bReverseInPlan || $iToken > 0 || $iPhrase > 0))
-                                                                                                       {
-                                                                                                               $aSearch['iSearchRank'] += 5;
-                                                                                                       }
-                                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                               }
-                                                                                       }
-                                                                                       elseif (isset($aSearchTerm['lat']) && $aSearchTerm['lat'] !== '' && $aSearchTerm['lat'] !== null)
-                                                                                       {
-                                                                                               if ($aSearch['fLat'] === '')
-                                                                                               {
-                                                                                                       $aSearch['fLat'] = $aSearchTerm['lat'];
-                                                                                                       $aSearch['fLon'] = $aSearchTerm['lon'];
-                                                                                                       $aSearch['fRadius'] = $aSearchTerm['radius'];
-                                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                               }
-                                                                                       }
-                                                                                       elseif ($sPhraseType == 'postalcode')
-                                                                                       {
-                                                                                               // 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 (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
-                                                                                               {
-                                                                                                       // If we already have a name try putting the postcode first
-                                                                                                       if (sizeof($aSearch['aName']))
-                                                                                                       {
-                                                                                                               $aNewSearch = $aSearch;
-                                                                                                               $aNewSearch['aAddress'] = array_merge($aNewSearch['aAddress'], $aNewSearch['aName']);
-                                                                                                               $aNewSearch['aName'] = array();
-                                                                                                               $aNewSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aNewSearch;
-                                                                                                       }
-
-                                                                                                       if (sizeof($aSearch['aName']))
-                                                                                                       {
-                                                                                                               if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
-                                                                                                               {
-                                                                                                                       $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                               }
-                                                                                                               else
-                                                                                                               {
-                                                                                                                       $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                                       $aSearch['iSearchRank'] += 1000; // skip;
-                                                                                                               }
-                                                                                                       }
-                                                                                                       else
-                                                                                                       {
-                                                                                                               $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                               //$aSearch['iNamePhrase'] = $iPhrase;
-                                                                                                       }
-                                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                               }
-
-                                                                                       }
-                                                                                       elseif (($sPhraseType == '' || $sPhraseType == 'street') && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'house')
-                                                                                       {
-                                                                                               if ($aSearch['sHouseNumber'] === '')
-                                                                                               {
-                                                                                                       $aSearch['sHouseNumber'] = $sToken;
-                                                                                                       // sanity check: if the housenumber is not mainly made
-                                                                                                       // up of numbers, add a penalty
-                                                                                                       if (preg_match_all("/[^0-9]/", $sToken, $aMatches) > 2) $aSearch['iSearchRank']++;
-                                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                                       /*
-                                                                                                       // Fall back to not searching for this item (better than nothing)
-                                                                                                       $aSearch = $aCurrentSearch;
-                                                                                                       $aSearch['iSearchRank'] += 1;
-                                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                                        */
-                                                                                               }
-                                                                                       }
-                                                                                       elseif ($sPhraseType == '' && $aSearchTerm['class'] !== '' && $aSearchTerm['class'] !== null)
-                                                                                       {
-                                                                                               if ($aSearch['sClass'] === '')
-                                                                                               {
-                                                                                                       $aSearch['sOperator'] = $aSearchTerm['operator'];
-                                                                                                       $aSearch['sClass'] = $aSearchTerm['class'];
-                                                                                                       $aSearch['sType'] = $aSearchTerm['type'];
-                                                                                                       if (sizeof($aSearch['aName'])) $aSearch['sOperator'] = 'name';
-                                                                                                       else $aSearch['sOperator'] = 'near'; // near = in for the moment
-                                                                                                       if (strlen($aSearchTerm['operator']) == 0) $aSearch['iSearchRank'] += 1;
-
-                                                                                                       // Do we have a shortcut id?
-                                                                                                       if ($aSearch['sOperator'] == 'name')
-                                                                                                       {
-                                                                                                               $sSQL = "select get_tagpair('".$aSearch['sClass']."', '".$aSearch['sType']."')";
-                                                                                                               if ($iAmenityID = $this->oDB->getOne($sSQL))
-                                                                                                               {
-                                                                                                                       $aValidTokens[$aSearch['sClass'].':'.$aSearch['sType']] = array('word_id' => $iAmenityID);
-                                                                                                                       $aSearch['aName'][$iAmenityID] = $iAmenityID;
-                                                                                                                       $aSearch['sClass'] = '';
-                                                                                                                       $aSearch['sType'] = '';
-                                                                                                               }
-                                                                                                       }
-                                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                               }
-                                                                                       }
-                                                                                       elseif (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
-                                                                                       {
-                                                                                               if (sizeof($aSearch['aName']))
-                                                                                               {
-                                                                                                       if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
-                                                                                                       {
-                                                                                                               $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                       }
-                                                                                                       else
-                                                                                                       {
-                                                                                                               $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                               $aSearch['iSearchRank'] += 1000; // skip;
-                                                                                                       }
-                                                                                               }
-                                                                                               else
-                                                                                               {
-                                                                                                       $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                       //$aSearch['iNamePhrase'] = $iPhrase;
-                                                                                               }
-                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                       }
-                                                                               }
-                                                                       }
-                                                                       if (isset($aValidTokens[$sToken]))
-                                                                       {
-                                                                               // Allow searching for a word - but at extra cost
-                                                                               foreach($aValidTokens[$sToken] as $aSearchTerm)
-                                                                               {
-                                                                                       if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
-                                                                                       {
-                                                                                               if ((!$bStructuredPhrases || $iPhrase > 0) && sizeof($aCurrentSearch['aName']) && strpos($sToken, ' ') === false)
-                                                                                               {
-                                                                                                       $aSearch = $aCurrentSearch;
-                                                                                                       $aSearch['iSearchRank'] += 1;
-                                                                                                       if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
-                                                                                                       {
-                                                                                                               $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                                       }
-                                                                                                       elseif (isset($aValidTokens[' '.$sToken]) && strlen($sToken) >= 4) // revert to the token version?
-                                                                                                       {
-                                                                                                               $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                               $aSearch['iSearchRank'] += 1;
-                                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                                               foreach($aValidTokens[' '.$sToken] as $aSearchTermToken)
-                                                                                                               {
-                                                                                                                       if (empty($aSearchTermToken['country_code'])
-                                                                                                                                       && empty($aSearchTermToken['lat'])
-                                                                                                                                       && empty($aSearchTermToken['class']))
-                                                                                                                       {
-                                                                                                                               $aSearch = $aCurrentSearch;
-                                                                                                                               $aSearch['iSearchRank'] += 1;
-                                                                                                                               $aSearch['aAddress'][$aSearchTermToken['word_id']] = $aSearchTermToken['word_id'];
-                                                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                                                       }
-                                                                                                               }
-                                                                                                       }
-                                                                                                       else
-                                                                                                       {
-                                                                                                               $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                               if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
-                                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                                       }
-                                                                                               }
-
-                                                                                               if (!sizeof($aCurrentSearch['aName']) || $aCurrentSearch['iNamePhrase'] == $iPhrase)
-                                                                                               {
-                                                                                                       $aSearch = $aCurrentSearch;
-                                                                                                       $aSearch['iSearchRank'] += 1;
-                                                                                                       if (!sizeof($aCurrentSearch['aName'])) $aSearch['iSearchRank'] += 1;
-                                                                                                       if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
-                                                                                                       if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
-                                                                                                               $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                       else
-                                                                                                               $aSearch['aNameNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                       $aSearch['iNamePhrase'] = $iPhrase;
-                                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                               }
-                                                                                       }
-                                                                               }
-                                                                       }
-                                                                       else
-                                                                       {
-                                                                               // Allow skipping a word - but at EXTREAM cost
-                                                                               //$aSearch = $aCurrentSearch;
-                                                                               //$aSearch['iSearchRank']+=100;
-                                                                               //$aNewWordsetSearches[] = $aSearch;
-                                                                       }
+                                                                       if (!isset($aReverseGroupedSearches[$aSearch['iSearchRank']])) $aReverseGroupedSearches[$aSearch['iSearchRank']] = array();
+                                                                       $aReverseGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
                                                                }
-                                                               // Sort and cut
-                                                               usort($aNewWordsetSearches, 'bySearchRank');
-                                                               $aWordsetSearches = array_slice($aNewWordsetSearches, 0, 50);
-                                                       }
-                                                       //var_Dump('<hr>',sizeof($aWordsetSearches)); exit;
-
-                                                       $aNewPhraseSearches = array_merge($aNewPhraseSearches, $aNewWordsetSearches);
-                                                       usort($aNewPhraseSearches, 'bySearchRank');
 
-                                                       $aSearchHash = array();
-                                                       foreach($aNewPhraseSearches as $iSearch => $aSearch)
-                                                       {
-                                                               $sHash = serialize($aSearch);
-                                                               if (isset($aSearchHash[$sHash])) unset($aNewPhraseSearches[$iSearch]);
-                                                               else $aSearchHash[$sHash] = 1;
                                                        }
-
-                                                       $aNewPhraseSearches = array_slice($aNewPhraseSearches, 0, 50);
                                                }
 
-                                               // Re-group the searches by their score, junk anything over 20 as just not worth trying
-                                               $aGroupedSearches = array();
-                                               foreach($aNewPhraseSearches as $aSearch)
-                                               {
-                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank)
-                                                       {
-                                                               if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
-                                                               $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
-                                                       }
-                                               }
+                                               $aGroupedSearches = $aReverseGroupedSearches;
                                                ksort($aGroupedSearches);
-
-                                               $iSearchCount = 0;
-                                               $aSearches = array();
-                                               foreach($aGroupedSearches as $iScore => $aNewSearches)
-                                               {
-                                                       $iSearchCount += sizeof($aNewSearches);
-                                                       $aSearches = array_merge($aSearches, $aNewSearches);
-                                                       if ($iSearchCount > 50) break;
-                                               }
-
-                                               //if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
-
                                        }
-
                                }
                                else
                                {
 
                                if (CONST_Debug) var_Dump($aGroupedSearches);
 
-                               if ($this->bReverseInPlan)
-                               {
-                                       $aCopyGroupedSearches = $aGroupedSearches;
-                                       foreach($aCopyGroupedSearches as $iGroup => $aSearches)
-                                       {
-                                               foreach($aSearches as $iSearch => $aSearch)
-                                               {
-                                                       if (sizeof($aSearch['aAddress']))
-                                                       {
-                                                               $iReverseItem = array_pop($aSearch['aAddress']);
-                                                               if (isset($aPossibleMainWordIDs[$iReverseItem]))
-                                                               {
-                                                                       $aSearch['aAddress'] = array_merge($aSearch['aAddress'], $aSearch['aName']);
-                                                                       $aSearch['aName'] = array($iReverseItem);
-                                                                       $aGroupedSearches[$iGroup][] = $aSearch;
-                                                               }
-                                                               //$aReverseSearch['aName'][$iReverseItem] = $iReverseItem;
-                                                               //$aGroupedSearches[$iGroup][] = $aReverseSearch;
-                                                       }
-                                               }
-                                       }
-                               }
-
                                if (CONST_Search_TryDroppedAddressTerms && sizeof($aStructuredQuery) > 0)
                                {
                                        $aCopyGroupedSearches = $aGroupedSearches;
index a2e58c4bac08b8f3f4de1985ae223104a25c3f07..43807d1566588cecc6319462a06580a948601c6c 100644 (file)
                return $aResult;
        }
 
+       function getInverseWordSets($aWords, $iDepth)
+       {
+               $aResult = array(array(join(' ',$aWords)));
+               $sFirstToken = '';
+               if ($iDepth < 8)
+               {
+                       while(sizeof($aWords) > 1)
+                       {
+                               $sWord = array_pop($aWords);
+                               $sFirstToken = $sWord.($sFirstToken?' ':'').$sFirstToken;
+                               $aRest = getInverseWordSets($aWords, $iDepth+1);
+                               foreach($aRest as $aSet)
+                               {
+                                       $aResult[] = array_merge(array($sFirstToken),$aSet);
+                               }
+                       }
+               }
+               return $aResult;
+       }
+
 
        function getTokensFromSets($aSets)
        {