/** * Re-write query into primitive queries in the context of specified index * * @param Zend_Search_Lucene_Interface $index * @return Zend_Search_Lucene_Search_Query */ public function rewrite(Zend_Search_Lucene_Interface $index) { if ($this->_field === null) { require_once 'Zend/Search/Lucene/Search/Query/MultiTerm.php'; $query = new Zend_Search_Lucene_Search_Query_MultiTerm(); $query->setBoost($this->getBoost()); $hasInsignificantSubqueries = false; require_once 'Zend/Search/Lucene.php'; if (Zend_Search_Lucene::getDefaultSearchField() === null) { $searchFields = $index->getFieldNames(true); } else { $searchFields = array(Zend_Search_Lucene::getDefaultSearchField()); } require_once 'Zend/Search/Lucene/Search/Query/Preprocessing/Term.php'; foreach ($searchFields as $fieldName) { $subquery = new Zend_Search_Lucene_Search_Query_Preprocessing_Term($this->_word, $this->_encoding, $fieldName); $rewrittenSubquery = $subquery->rewrite($index); foreach ($rewrittenSubquery->getQueryTerms() as $term) { $query->addTerm($term); } if ($rewrittenSubquery instanceof Zend_Search_Lucene_Search_Query_Insignificant) { $hasInsignificantSubqueries = true; } } if (count($query->getTerms()) == 0) { $this->_matches = array(); if ($hasInsignificantSubqueries) { require_once 'Zend/Search/Lucene/Search/Query/Insignificant.php'; return new Zend_Search_Lucene_Search_Query_Insignificant(); } else { require_once 'Zend/Search/Lucene/Search/Query/Empty.php'; return new Zend_Search_Lucene_Search_Query_Empty(); } } $this->_matches = $query->getQueryTerms(); return $query; } // ------------------------------------- // Recognize exact term matching (it corresponds to Keyword fields stored in the index) // encoding is not used since we expect binary matching require_once 'Zend/Search/Lucene/Index/Term.php'; $term = new Zend_Search_Lucene_Index_Term($this->_word, $this->_field); if ($index->hasTerm($term)) { require_once 'Zend/Search/Lucene/Search/Query/Term.php'; $query = new Zend_Search_Lucene_Search_Query_Term($term); $query->setBoost($this->getBoost()); $this->_matches = $query->getQueryTerms(); return $query; } // ------------------------------------- // Recognize wildcard queries /** @todo check for PCRE unicode support may be performed through Zend_Environment in some future */ if (@preg_match('/\\pL/u', 'a') == 1) { $word = iconv($this->_encoding, 'UTF-8', $this->_word); $wildcardsPattern = '/[*?]/u'; $subPatternsEncoding = 'UTF-8'; } else { $word = $this->_word; $wildcardsPattern = '/[*?]/'; $subPatternsEncoding = $this->_encoding; } $subPatterns = preg_split($wildcardsPattern, $word, -1, PREG_SPLIT_OFFSET_CAPTURE); if (count($subPatterns) > 1) { // Wildcard query is recognized $pattern = ''; require_once 'Zend/Search/Lucene/Analysis/Analyzer.php'; foreach ($subPatterns as $id => $subPattern) { // Append corresponding wildcard character to the pattern before each sub-pattern (except first) if ($id != 0) { $pattern .= $word[$subPattern[1] - 1]; } // Check if each subputtern is a single word in terms of current analyzer $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($subPattern[0], $subPatternsEncoding); if (count($tokens) > 1) { require_once 'Zend/Search/Lucene/Search/QueryParserException.php'; throw new Zend_Search_Lucene_Search_QueryParserException('Wildcard search is supported only for non-multiple word terms'); } foreach ($tokens as $token) { $pattern .= $token->getTermText(); } } require_once 'Zend/Search/Lucene/Index/Term.php'; $term = new Zend_Search_Lucene_Index_Term($pattern, $this->_field); require_once 'Zend/Search/Lucene/Search/Query/Wildcard.php'; $query = new Zend_Search_Lucene_Search_Query_Wildcard($term); $query->setBoost($this->getBoost()); // Get rewritten query. Important! It also fills terms matching container. $rewrittenQuery = $query->rewrite($index); $this->_matches = $query->getQueryTerms(); return $rewrittenQuery; } // ------------------------------------- // Recognize one-term multi-term and "insignificant" queries require_once 'Zend/Search/Lucene/Analysis/Analyzer.php'; $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($this->_word, $this->_encoding); if (count($tokens) == 0) { $this->_matches = array(); require_once 'Zend/Search/Lucene/Search/Query/Insignificant.php'; return new Zend_Search_Lucene_Search_Query_Insignificant(); } if (count($tokens) == 1) { require_once 'Zend/Search/Lucene/Index/Term.php'; $term = new Zend_Search_Lucene_Index_Term($tokens[0]->getTermText(), $this->_field); require_once 'Zend/Search/Lucene/Search/Query/Term.php'; $query = new Zend_Search_Lucene_Search_Query_Term($term); $query->setBoost($this->getBoost()); $this->_matches = $query->getQueryTerms(); return $query; } //It's not insignificant or one term query require_once 'Zend/Search/Lucene/Search/Query/MultiTerm.php'; $query = new Zend_Search_Lucene_Search_Query_MultiTerm(); /** * @todo Process $token->getPositionIncrement() to support stemming, synonyms and other * analizer design features */ require_once 'Zend/Search/Lucene/Index/Term.php'; foreach ($tokens as $token) { $term = new Zend_Search_Lucene_Index_Term($token->getTermText(), $this->_field); $query->addTerm($term, true); // all subterms are required } $query->setBoost($this->getBoost()); $this->_matches = $query->getQueryTerms(); return $query; }
public function rewrite(Zend_Search_Lucene_Interface $index) { if ($this->_field === null) { $query = new Zend_Search_Lucene_Search_Query_MultiTerm(); $query->setBoost($this->getBoost()); $hasInsignificantSubqueries = false; if (Zend_Search_Lucene::getDefaultSearchField() === null) { $searchFields = $index->getFieldNames(true); } else { $searchFields = array(Zend_Search_Lucene::getDefaultSearchField()); } foreach ($searchFields as $fieldName) { $subquery = new Zend_Search_Lucene_Search_Query_Preprocessing_Term($this->_word, $this->_encoding, $fieldName); $rewrittenSubquery = $subquery->rewrite($index); foreach ($rewrittenSubquery->getQueryTerms() as $term) { $query->addTerm($term); } if ($rewrittenSubquery instanceof Zend_Search_Lucene_Search_Query_Insignificant) { $hasInsignificantSubqueries = true; } } if (count($query->getTerms()) == 0) { $this->_matches = array(); if ($hasInsignificantSubqueries) { return new Zend_Search_Lucene_Search_Query_Insignificant(); } else { return new Zend_Search_Lucene_Search_Query_Empty(); } } $this->_matches = $query->getQueryTerms(); return $query; } $term = new Zend_Search_Lucene_Index_Term($this->_word, $this->_field); if ($index->hasTerm($term)) { $query = new Zend_Search_Lucene_Search_Query_Term($term); $query->setBoost($this->getBoost()); $this->_matches = $query->getQueryTerms(); return $query; } if (@preg_match('/\\pL/u', 'a') == 1) { $word = iconv($this->_encoding, 'UTF-8', $this->_word); $wildcardsPattern = '/[*?]/u'; $subPatternsEncoding = 'UTF-8'; } else { $word = $this->_word; $wildcardsPattern = '/[*?]/'; $subPatternsEncoding = $this->_encoding; } $subPatterns = preg_split($wildcardsPattern, $word, -1, PREG_SPLIT_OFFSET_CAPTURE); if (count($subPatterns) > 1) { $pattern = ''; foreach ($subPatterns as $id => $subPattern) { if ($id != 0) { $pattern .= $word[$subPattern[1] - 1]; } $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($subPattern[0], $subPatternsEncoding); if (count($tokens) > 1) { throw new Zend_Search_Lucene_Search_QueryParserException('Wildcard search is supported only for non-multiple word terms'); } foreach ($tokens as $token) { $pattern .= $token->getTermText(); } } $term = new Zend_Search_Lucene_Index_Term($pattern, $this->_field); $query = new Zend_Search_Lucene_Search_Query_Wildcard($term); $query->setBoost($this->getBoost()); $rewrittenQuery = $query->rewrite($index); $this->_matches = $query->getQueryTerms(); return $rewrittenQuery; } $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($this->_word, $this->_encoding); if (count($tokens) == 0) { $this->_matches = array(); return new Zend_Search_Lucene_Search_Query_Insignificant(); } if (count($tokens) == 1) { $term = new Zend_Search_Lucene_Index_Term($tokens[0]->getTermText(), $this->_field); $query = new Zend_Search_Lucene_Search_Query_Term($term); $query->setBoost($this->getBoost()); $this->_matches = $query->getQueryTerms(); return $query; } $query = new Zend_Search_Lucene_Search_Query_MultiTerm(); foreach ($tokens as $token) { $term = new Zend_Search_Lucene_Index_Term($token->getTermText(), $this->_field); $query->addTerm($term, true); } $query->setBoost($this->getBoost()); $this->_matches = $query->getQueryTerms(); return $query; }