X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/3eb4d8805700ba12bd601e552c3bc48064423083..fdd20a76bdba7b1115361e337aff661ed830b11f:/lib-php/tokenizer/legacy_tokenizer.php diff --git a/lib-php/tokenizer/legacy_tokenizer.php b/lib-php/tokenizer/legacy_tokenizer.php index b3d9bbc7..6f3d2304 100644 --- a/lib-php/tokenizer/legacy_tokenizer.php +++ b/lib-php/tokenizer/legacy_tokenizer.php @@ -1 +1,265 @@ oDB =& $oDB; + $this->oNormalizer = \Transliterator::createFromRules(CONST_Term_Normalization_Rules); + } + + public function checkStatus() + { + $sStandardWord = $this->oDB->getOne("SELECT make_standard_name('a')"); + if ($sStandardWord === false) { + throw new \Exception('Module failed', 701); + } + + if ($sStandardWord != 'a') { + throw new \Exception('Module call failed', 702); + } + + $sSQL = "SELECT word_id FROM word WHERE word_token IN (' a')"; + $iWordID = $this->oDB->getOne($sSQL); + if ($iWordID === false) { + throw new \Exception('Query failed', 703); + } + if (!$iWordID) { + throw new \Exception('No value', 704); + } + } + + + public function normalizeString($sTerm) + { + if ($this->oNormalizer === null) { + return $sTerm; + } + + return $this->oNormalizer->transliterate($sTerm); + } + + + public function mostFrequentWords($iNum) + { + $sSQL = 'SELECT word FROM word WHERE word is not null '; + $sSQL .= 'ORDER BY search_name_count DESC LIMIT '.$iNum; + return $this->oDB->getCol($sSQL); + } + + + public function tokensForSpecialTerm($sTerm) + { + $aResults = array(); + + $sSQL = 'SELECT word_id, class, type FROM word '; + $sSQL .= ' WHERE word_token = \' \' || make_standard_name(:term)'; + $sSQL .= ' AND class is not null AND class not in (\'place\')'; + + Debug::printVar('Term', $sTerm); + Debug::printSQL($sSQL); + $aSearchWords = $this->oDB->getAll($sSQL, array(':term' => $sTerm)); + + Debug::printVar('Results', $aSearchWords); + + foreach ($aSearchWords as $aSearchTerm) { + $aResults[] = new \Nominatim\Token\SpecialTerm( + $aSearchTerm['word_id'], + $aSearchTerm['class'], + $aSearchTerm['type'], + \Nominatim\Operator::TYPE + ); + } + + Debug::printVar('Special term tokens', $aResults); + + return $aResults; + } + + + public function extractTokensFromPhrases(&$aPhrases) + { + // First get the normalized version of all phrases + $sNormQuery = ''; + $sSQL = 'SELECT '; + $aParams = array(); + foreach ($aPhrases as $iPhrase => $oPhrase) { + $sNormQuery .= ','.$this->normalizeString($oPhrase->getPhrase()); + $sSQL .= 'make_standard_name(:' .$iPhrase.') as p'.$iPhrase.','; + $aParams[':'.$iPhrase] = $oPhrase->getPhrase(); + + // Conflicts between US state abbreviations and various words + // for 'the' in different languages + switch (strtolower($oPhrase->getPhrase())) { + case 'il': + $aParams[':'.$iPhrase] = 'illinois'; + break; + case 'al': + $aParams[':'.$iPhrase] = 'alabama'; + break; + case 'la': + $aParams[':'.$iPhrase] = 'louisiana'; + break; + default: + $aParams[':'.$iPhrase] = $oPhrase->getPhrase(); + break; + } + } + $sSQL = substr($sSQL, 0, -1); + + Debug::printSQL($sSQL); + Debug::printVar('SQL parameters', $aParams); + + $aNormPhrases = $this->oDB->getRow($sSQL, $aParams); + + Debug::printVar('SQL result', $aNormPhrases); + + // now compute all possible tokens + $aWordLists = array(); + $aTokens = array(); + foreach ($aNormPhrases as $sPhrase) { + $oWordList = new SimpleWordList($sPhrase); + + foreach ($oWordList->getTokens() as $sToken) { + $aTokens[' '.$sToken] = ' '.$sToken; + $aTokens[$sToken] = $sToken; + } + + $aWordLists[] = $oWordList; + } + + Debug::printVar('Tokens', $aTokens); + Debug::printVar('WordLists', $aWordLists); + + $oValidTokens = $this->computeValidTokens($aTokens, $sNormQuery); + + foreach ($aPhrases as $iPhrase => $oPhrase) { + $oPhrase->setWordSets($aWordLists[$iPhrase]->getWordSets($oValidTokens)); + } + + return $oValidTokens; + } + + + private function computeValidTokens($aTokens, $sNormQuery) + { + $oValidTokens = new TokenList(); + + if (!empty($aTokens)) { + $this->addTokensFromDB($oValidTokens, $aTokens, $sNormQuery); + + // Try more interpretations for Tokens that could not be matched. + foreach ($aTokens as $sToken) { + if ($sToken[0] != ' ' && !$oValidTokens->contains($sToken)) { + if (preg_match('/^([0-9]{5}) [0-9]{4}$/', $sToken, $aData)) { + // US ZIP+4 codes - merge in the 5-digit ZIP code + $oValidTokens->addToken( + $sToken, + new Token\Postcode(null, $aData[1], 'us') + ); + } elseif (preg_match('/^[0-9]+$/', $sToken)) { + // Unknown single word token with a number. + // Assume it is a house number. + $oValidTokens->addToken( + $sToken, + new Token\HouseNumber(null, trim($sToken)) + ); + } + } + } + } + + return $oValidTokens; + } + + + private function addTokensFromDB(&$oValidTokens, $aTokens, $sNormQuery) + { + // Check which tokens we have, get the ID numbers + $sSQL = 'SELECT word_id, word_token, word, class, type, country_code,'; + $sSQL .= ' operator, coalesce(search_name_count, 0) as count'; + $sSQL .= ' FROM word WHERE word_token in ('; + $sSQL .= join(',', $this->oDB->getDBQuotedList($aTokens)).')'; + + Debug::printSQL($sSQL); + + $aDBWords = $this->oDB->getAll($sSQL, null, 'Could not get word tokens.'); + + foreach ($aDBWords as $aWord) { + $oToken = null; + $iId = (int) $aWord['word_id']; + + if ($aWord['class']) { + // Special terms need to appear in their normalized form. + // (postcodes are not normalized in the word table) + $sNormWord = $this->normalizeString($aWord['word']); + if ($aWord['word'] && strpos($sNormQuery, $sNormWord) === false) { + continue; + } + + if ($aWord['class'] == 'place' && $aWord['type'] == 'house') { + $oToken = new Token\HouseNumber($iId, trim($aWord['word_token'])); + } elseif ($aWord['class'] == 'place' && $aWord['type'] == 'postcode') { + if ($aWord['word'] + && pg_escape_string($aWord['word']) == $aWord['word'] + ) { + $oToken = new Token\Postcode( + $iId, + $aWord['word'], + $aWord['country_code'] + ); + } + } else { + // near and in operator the same at the moment + $oToken = new Token\SpecialTerm( + $iId, + $aWord['class'], + $aWord['type'], + $aWord['operator'] ? Operator::NEAR : Operator::NONE + ); + } + } elseif ($aWord['country_code']) { + $oToken = new Token\Country($iId, $aWord['country_code']); + } elseif ($aWord['word_token'][0] == ' ') { + $oToken = new Token\Word( + $iId, + (int) $aWord['count'], + substr_count($aWord['word_token'], ' ') + ); + // For backward compatibility: ignore all partial tokens with more + // than one word. + } elseif (strpos($aWord['word_token'], ' ') === false) { + $oToken = new Token\Partial( + $iId, + $aWord['word_token'], + (int) $aWord['count'] + ); + } + + if ($oToken) { + // remove any leading spaces + if ($aWord['word_token'][0] == ' ') { + $oValidTokens->addToken(substr($aWord['word_token'], 1), $oToken); + } else { + $oValidTokens->addToken($aWord['word_token'], $oToken); + } + } + } + } +}