PHP Zend_Search_Lucene_Search_Query_Term类代码示例

 public function getQuery($encoding)
 {
     if (strpos($this->_phrase, '?') !== false || strpos($this->_phrase, '*') !== false) {
         require_once 'Zend/Search/Lucene/Search/QueryParserException.php';
         throw new Zend_Search_Lucene_Search_QueryParserException('Wildcards are only allowed in a single terms.');
     }
     $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($this->_phrase, $encoding);
     if (count($tokens) == 0) {
         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->_boost);
         return $query;
     }
     //It's not empty or one term query
     $position = -1;
     $query = new Zend_Search_Lucene_Search_Query_Phrase();
     foreach ($tokens as $token) {
         $position += $token->getPositionIncrement();
         $term = new Zend_Search_Lucene_Index_Term($token->getTermText(), $this->_field);
         $query->addTerm($term, $position);
     }
     if ($this->_proximityQuery) {
         $query->setSlop($this->_wordsDistance);
     }
     $query->setBoost($this->_boost);
     return $query;
 }

 /**
  * Transform entry to a subquery
  *
  * @param string $encoding
  * @return Zend_Search_Lucene_Search_Query
  * @throws Zend_Search_Lucene_Search_QueryParserException
  */
 public function getQuery($encoding)
 {
     if (strpos($this->_phrase, '?') !== false || strpos($this->_phrase, '*') !== false) {
         require_once __CA_LIB_DIR__ . '/core/Zend/Search/Lucene/Search/QueryParserException.php';
         throw new Zend_Search_Lucene_Search_QueryParserException('Wildcards are only allowed in a single terms.');
     }
     $tokens = explode(" ", $this->_phrase);
     if (count($tokens) == 0) {
         return new Zend_Search_Lucene_Search_Query_Insignificant();
     }
     if (count($tokens) == 1) {
         $term = new Zend_Search_Lucene_Index_Term(strtolower($tokens[0]), $this->_field);
         $query = new Zend_Search_Lucene_Search_Query_Term($term);
         $query->setBoost($this->_boost);
         return $query;
     }
     //It's not empty or one term query
     $query = new Zend_Search_Lucene_Search_Query_Phrase();
     foreach ($tokens as $token) {
         $term = new Zend_Search_Lucene_Index_Term(strtolower($token), $this->_field);
         $query->addTerm($term);
     }
     if ($this->_proximityQuery) {
         $query->setSlop($this->_wordsDistance);
     }
     $query->setBoost($this->_boost);
     return $query;
 }

//.........这里部分代码省略.........
     //$1 'Zend/Search/Lucene.php';
     $maxTerms = Zend_Search_Lucene::getTermsPerQueryLimit();
     foreach ($fields as $field) {
         $index->resetTermsStream();
         //$1 'Zend/Search/Lucene/Index/Term.php';
         if ($prefix != '') {
             $index->skipTo(new Zend_Search_Lucene_Index_Term($prefix, $field));
             while ($index->currentTerm() !== null && $index->currentTerm()->field == $field && substr($index->currentTerm()->text, 0, $prefixByteLength) == $prefix) {
                 // Calculate similarity
                 $target = substr($index->currentTerm()->text, $prefixByteLength);
                 $maxDistance = isset($this->_maxDistances[strlen($target)]) ? $this->_maxDistances[strlen($target)] : $this->_calculateMaxDistance($prefixUtf8Length, $termRestLength, strlen($target));
                 if ($termRestLength == 0) {
                     // we don't have anything to compare.  That means if we just add
                     // the letters for current term we get the new word
                     $similarity = $prefixUtf8Length == 0 ? 0 : 1 - strlen($target) / $prefixUtf8Length;
                 } else {
                     if (strlen($target) == 0) {
                         $similarity = $prefixUtf8Length == 0 ? 0 : 1 - $termRestLength / $prefixUtf8Length;
                     } else {
                         if ($maxDistance < abs($termRestLength - strlen($target))) {
                             //just adding the characters of term to target or vice-versa results in too many edits
                             //for example "pre" length is 3 and "prefixes" length is 8.  We can see that
                             //given this optimal circumstance, the edit distance cannot be less than 5.
                             //which is 8-3 or more precisesly abs(3-8).
                             //if our maximum edit distance is 4, then we can discard this word
                             //without looking at it.
                             $similarity = 0;
                         } else {
                             $similarity = 1 - levenshtein($termRest, $target) / ($prefixUtf8Length + min($termRestLength, strlen($target)));
                         }
                     }
                 }
                 if ($similarity > $this->_minimumSimilarity) {
                     $this->_matches[] = $index->currentTerm();
                     $this->_termKeys[] = $index->currentTerm()->key();
                     $this->_scores[] = ($similarity - $this->_minimumSimilarity) * $scaleFactor;
                     if ($maxTerms != 0 && count($this->_matches) > $maxTerms) {
                         //$1 'Zend/Search/Lucene/Exception.php';
                         throw new Zend_Search_Lucene_Exception('Terms per query limit is reached.');
                     }
                 }
                 $index->nextTerm();
             }
         } else {
             $index->skipTo(new Zend_Search_Lucene_Index_Term('', $field));
             while ($index->currentTerm() !== null && $index->currentTerm()->field == $field) {
                 // Calculate similarity
                 $target = $index->currentTerm()->text;
                 $maxDistance = isset($this->_maxDistances[strlen($target)]) ? $this->_maxDistances[strlen($target)] : $this->_calculateMaxDistance(0, $termRestLength, strlen($target));
                 if ($maxDistance < abs($termRestLength - strlen($target))) {
                     //just adding the characters of term to target or vice-versa results in too many edits
                     //for example "pre" length is 3 and "prefixes" length is 8.  We can see that
                     //given this optimal circumstance, the edit distance cannot be less than 5.
                     //which is 8-3 or more precisesly abs(3-8).
                     //if our maximum edit distance is 4, then we can discard this word
                     //without looking at it.
                     $similarity = 0;
                 } else {
                     $similarity = 1 - levenshtein($termRest, $target) / min($termRestLength, strlen($target));
                 }
                 if ($similarity > $this->_minimumSimilarity) {
                     $this->_matches[] = $index->currentTerm();
                     $this->_termKeys[] = $index->currentTerm()->key();
                     $this->_scores[] = ($similarity - $this->_minimumSimilarity) * $scaleFactor;
                     if ($maxTerms != 0 && count($this->_matches) > $maxTerms) {
                         //$1 'Zend/Search/Lucene/Exception.php';
                         throw new Zend_Search_Lucene_Exception('Terms per query limit is reached.');
                     }
                 }
                 $index->nextTerm();
             }
         }
         $index->closeTermsStream();
     }
     if (count($this->_matches) == 0) {
         //$1 'Zend/Search/Lucene/Search/Query/Empty.php';
         return new Zend_Search_Lucene_Search_Query_Empty();
     } else {
         if (count($this->_matches) == 1) {
             //$1 'Zend/Search/Lucene/Search/Query/Term.php';
             return new Zend_Search_Lucene_Search_Query_Term(reset($this->_matches));
         } else {
             //$1 'Zend/Search/Lucene/Search/Query/Boolean.php';
             $rewrittenQuery = new Zend_Search_Lucene_Search_Query_Boolean();
             array_multisort($this->_scores, SORT_DESC, SORT_NUMERIC, $this->_termKeys, SORT_ASC, SORT_STRING, $this->_matches);
             $termCount = 0;
             //$1 'Zend/Search/Lucene/Search/Query/Term.php';
             foreach ($this->_matches as $id => $matchedTerm) {
                 $subquery = new Zend_Search_Lucene_Search_Query_Term($matchedTerm);
                 $subquery->setBoost($this->_scores[$id]);
                 $rewrittenQuery->addSubquery($subquery);
                 $termCount++;
                 if ($termCount >= self::MAX_CLAUSE_COUNT) {
                     break;
                 }
             }
             return $rewrittenQuery;
         }
     }
 }

 /**
  * Optimize query in the context of specified index
  *
  * @param Zend_Search_Lucene_Interface $index
  * @return Zend_Search_Lucene_Search_Query
  */
 public function optimize(Zend_Search_Lucene_Interface $index)
 {
     $terms = $this->_terms;
     $signs = $this->_signs;
     foreach ($terms as $id => $term) {
         if (!$index->hasTerm($term)) {
             if ($signs === null || $signs[$id] === true) {
                 // Term is required
                 return new Zend_Search_Lucene_Search_Query_Empty();
             } else {
                 // Term is optional or prohibited
                 // Remove it from terms and signs list
                 unset($terms[$id]);
                 unset($signs[$id]);
             }
         }
     }
     // Check if all presented terms are prohibited
     $allProhibited = true;
     if ($signs === null) {
         $allProhibited = false;
     } else {
         foreach ($signs as $sign) {
             if ($sign !== false) {
                 $allProhibited = false;
                 break;
             }
         }
     }
     if ($allProhibited) {
         return new Zend_Search_Lucene_Search_Query_Empty();
     }
     /**
      * @todo make an optimization for repeated terms
      * (they may have different signs)
      */
     if (count($terms) == 1) {
         // It's already checked, that it's not a prohibited term
         // It's one term query with one required or optional element
         $optimizedQuery = new Zend_Search_Lucene_Search_Query_Term(reset($terms));
         $optimizedQuery->setBoost($this->getBoost());
         return $optimizedQuery;
     }
     if (count($terms) == 0) {
         return new Zend_Search_Lucene_Search_Query_Empty();
     }
     $optimizedQuery = new Zend_Search_Lucene_Search_Query_MultiTerm($terms, $signs);
     $optimizedQuery->setBoost($this->getBoost());
     return $optimizedQuery;
 }

 /**
  * 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 $index)
 {
     // Allow to use wildcards within phrases
     // They are either removed by text analyzer or used as a part of keyword for keyword fields
     //
     //        if (strpos($this->_phrase, '?') !== false || strpos($this->_phrase, '*') !== false) {
     //            require_once 'Zend/Search/Lucene/Search/QueryParserException.php';
     //            throw new Zend_Search_Lucene_Search_QueryParserException('Wildcards are only allowed in a single terms.');
     //        }
     // Split query into subqueries if field name is not specified
     if ($this->_field === null) {
         require_once 'Zend/Search/Lucene/Search/Query/Boolean.php';
         $query = new Zend_Search_Lucene_Search_Query_Boolean();
         $query->setBoost($this->getBoost());
         require_once 'Zend/Search/Lucene.php';
         if (Zend_Search_Lucene::getDefaultSearchField() === null) {
             $searchFields = $index->getFieldNames(true);
         } else {
             $searchFields = array(Zend_Search_Lucene::getDefaultSearchField());
         }
         foreach ($searchFields as $fieldName) {
             $subquery = new Zend_Search_Lucene_Search_Query_Preprocessing_Phrase($this->_phrase, $this->_phraseEncoding, $fieldName);
             $subquery->setSlop($this->getSlop());
             $query->addSubquery($subquery->rewrite($index));
         }
         $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->_phrase, $this->_field);
     if ($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;
     }
     // tokenize phrase using current analyzer and process it as a phrase query
     require_once 'Zend/Search/Lucene/Analysis/Analyzer.php';
     $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($this->_phrase, $this->_phraseEncoding);
     if (count($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 non-trivial phrase query
     $position = -1;
     require_once 'Zend/Search/Lucene/Search/Query/Phrase.php';
     $query = new Zend_Search_Lucene_Search_Query_Phrase();
     require_once 'Zend/Search/Lucene/Index/Term.php';
     foreach ($tokens as $token) {
         $position += $token->getPositionIncrement();
         $term = new Zend_Search_Lucene_Index_Term($token->getTermText(), $this->_field);
         $query->addTerm($term, $position);
         $query->setSlop($this->getSlop());
     }
     $this->_matches = $query->getQueryTerms();
     return $query;
 }

 /**
  * 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';
//.........这里部分代码省略.........

 /**
  * Optimize query in the context of specified index
  *
  * @param Zend_Search_Lucene_Interface $index
  * @return Zend_Search_Lucene_Search_Query
  */
 public function optimize(Zend_Search_Lucene_Interface $index)
 {
     $subqueries = array();
     $signs = array();
     // Optimize all subqueries
     foreach ($this->_subqueries as $id => $subquery) {
         $subqueries[] = $subquery->optimize($index);
         $signs[] = $this->_signs === null ? true : $this->_signs[$id];
     }
     // Remove insignificant subqueries
     foreach ($subqueries as $id => $subquery) {
         if ($subquery instanceof Zend_Search_Lucene_Search_Query_Insignificant) {
             // Insignificant subquery has to be removed anyway
             unset($subqueries[$id]);
             unset($signs[$id]);
         }
     }
     if (count($subqueries) == 0) {
         // Boolean query doesn't has non-insignificant subqueries
         return new Zend_Search_Lucene_Search_Query_Insignificant();
     }
     // Check if all non-insignificant subqueries are prohibited
     $allProhibited = true;
     foreach ($signs as $sign) {
         if ($sign !== false) {
             $allProhibited = false;
             break;
         }
     }
     if ($allProhibited) {
         return new Zend_Search_Lucene_Search_Query_Insignificant();
     }
     // Check for empty subqueries
     foreach ($subqueries as $id => $subquery) {
         if ($subquery instanceof Zend_Search_Lucene_Search_Query_Empty) {
             if ($signs[$id] === true) {
                 // Matching is required, but is actually empty
                 return new Zend_Search_Lucene_Search_Query_Empty();
             } else {
                 // Matching is optional or prohibited, but is empty
                 // Remove it from subqueries and signs list
                 unset($subqueries[$id]);
                 unset($signs[$id]);
             }
         }
     }
     // Check, if reduced subqueries list is empty
     if (count($subqueries) == 0) {
         return new Zend_Search_Lucene_Search_Query_Empty();
     }
     // Check if all non-empty subqueries are prohibited
     $allProhibited = true;
     foreach ($signs as $sign) {
         if ($sign !== false) {
             $allProhibited = false;
             break;
         }
     }
     if ($allProhibited) {
         return new Zend_Search_Lucene_Search_Query_Empty();
     }
     // Check, if reduced subqueries list has only one entry
     if (count($subqueries) == 1) {
         // It's a query with only one required or optional clause
         // (it's already checked, that it's not a prohibited clause)
         if ($this->getBoost() == 1) {
             return reset($subqueries);
         }
         $optimizedQuery = clone reset($subqueries);
         $optimizedQuery->setBoost($optimizedQuery->getBoost() * $this->getBoost());
         return $optimizedQuery;
     }
     // Prepare first candidate for optimized query
     $optimizedQuery = new Zend_Search_Lucene_Search_Query_Boolean($subqueries, $signs);
     $optimizedQuery->setBoost($this->getBoost());
     $terms = array();
     $tsigns = array();
     $boostFactors = array();
     // Try to decompose term and multi-term subqueries
     foreach ($subqueries as $id => $subquery) {
         if ($subquery instanceof Zend_Search_Lucene_Search_Query_Term) {
             $terms[] = $subquery->getTerm();
             $tsigns[] = $signs[$id];
             $boostFactors[] = $subquery->getBoost();
             // remove subquery from a subqueries list
             unset($subqueries[$id]);
             unset($signs[$id]);
         } else {
             if ($subquery instanceof Zend_Search_Lucene_Search_Query_MultiTerm) {
                 $subTerms = $subquery->getTerms();
                 $subSigns = $subquery->getSigns();
                 if ($signs[$id] === true) {
                     // It's a required multi-term subquery.
                     // Something like '... +(+term1 -term2 term3 ...) ...'
//.........这里部分代码省略.........

 /**
  * Optimize query in the context of specified index
  *
  * @param Zend_Search_Lucene_Interface $index
  * @return Zend_Search_Lucene_Search_Query
  */
 public function optimize(Zend_Search_Lucene_Interface $index)
 {
     // Check, that index contains all phrase terms
     foreach ($this->_terms as $term) {
         if (!$index->hasTerm($term)) {
             require_once 'Zend/Search/Lucene/Search/Query/Empty.php';
             return new Zend_Search_Lucene_Search_Query_Empty();
         }
     }
     if (count($this->_terms) == 1) {
         // It's one term query
         require_once 'Zend/Search/Lucene/Search/Query/Term.php';
         $optimizedQuery = new Zend_Search_Lucene_Search_Query_Term(reset($this->_terms));
         $optimizedQuery->setBoost($this->getBoost());
         return $optimizedQuery;
     }
     if (count($this->_terms) == 0) {
         require_once 'Zend/Search/Lucene/Search/Query/Empty.php';
         return new Zend_Search_Lucene_Search_Query_Empty();
     }
     return $this;
 }

 /**
  * Transform entry to a subquery
  *
  * @param string $encoding
  * @return Zend_Search_Lucene_Search_Query
  * @throws Zend_Search_Lucene_Search_QueryParserException
  */
 public function getQuery($encoding)
 {
     if (strpos($this->_term, '?') !== false || strpos($this->_term, '*') !== false) {
         if ($this->_fuzzyQuery) {
             // require_once 'Zend/Search/Lucene/Search/QueryParserException.php';
             throw new Zend_Search_Lucene_Search_QueryParserException('Fuzzy search is not supported for terms with wildcards.');
         }
         $pattern = '';
         $subPatterns = explode('*', $this->_term);
         $astericFirstPass = true;
         foreach ($subPatterns as $subPattern) {
             if (!$astericFirstPass) {
                 $pattern .= '*';
             } else {
                 $astericFirstPass = false;
             }
             $subPatternsL2 = explode('?', $subPattern);
             $qMarkFirstPass = true;
             foreach ($subPatternsL2 as $subPatternL2) {
                 if (!$qMarkFirstPass) {
                     $pattern .= '?';
                 } else {
                     $qMarkFirstPass = false;
                 }
                 $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($subPatternL2, $encoding);
                 if (count($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();
                 }
             }
         }
         $term = new Zend_Search_Lucene_Index_Term($pattern, $this->_field);
         $query = new Zend_Search_Lucene_Search_Query_Wildcard($term);
         $query->setBoost($this->_boost);
         return $query;
     }
     $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($this->_term, $encoding);
     if (count($tokens) == 0) {
         return new Zend_Search_Lucene_Search_Query_Insignificant();
     }
     if (count($tokens) == 1 && !$this->_fuzzyQuery) {
         $term = new Zend_Search_Lucene_Index_Term($tokens[0]->getTermText(), $this->_field);
         $query = new Zend_Search_Lucene_Search_Query_Term($term);
         $query->setBoost($this->_boost);
         return $query;
     }
     if (count($tokens) == 1 && $this->_fuzzyQuery) {
         $term = new Zend_Search_Lucene_Index_Term($tokens[0]->getTermText(), $this->_field);
         $query = new Zend_Search_Lucene_Search_Query_Fuzzy($term, $this->_similarity);
         $query->setBoost($this->_boost);
         return $query;
     }
     if ($this->_fuzzyQuery) {
         // require_once 'Zend/Search/Lucene/Search/QueryParserException.php';
         throw new Zend_Search_Lucene_Search_QueryParserException('Fuzzy search is supported only for non-multiple word terms');
     }
     //It's not empty or one term query
     $query = new Zend_Search_Lucene_Search_Query_MultiTerm();
     /**
      * @todo Process $token->getPositionIncrement() to support stemming, synonyms and other
      * analizer design features
      */
     foreach ($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->_boost);
     return $query;
 }

 private function _queryToString($po_parsed_query)
 {
     switch (get_class($po_parsed_query)) {
         case 'Zend_Search_Lucene_Search_Query_Boolean':
             $va_items = $po_parsed_query->getSubqueries();
             $va_signs = $po_parsed_query->getSigns();
             break;
         case 'Zend_Search_Lucene_Search_Query_MultiTerm':
             $va_items = $po_parsed_query->getTerms();
             $va_signs = $po_parsed_query->getSigns();
             break;
         case 'Zend_Search_Lucene_Search_Query_Phrase':
             //$va_items = $po_parsed_query->getTerms();
             $va_items = $po_parsed_query;
             $va_signs = null;
             break;
         case 'Zend_Search_Lucene_Search_Query_Range':
             $va_items = $po_parsed_query;
             $va_signs = null;
             break;
         default:
             $va_items = array();
             $va_signs = null;
             break;
     }
     $vs_query = '';
     foreach ($va_items as $id => $subquery) {
         if ($id != 0) {
             $vs_query .= ' ';
         }
         if (($va_signs === null || $va_signs[$id] === true) && $id) {
             $vs_query .= ' AND ';
         } else {
             if ($va_signs[$id] === false && $id) {
                 $vs_query .= ' NOT ';
             } else {
                 if ($id) {
                     $vs_query .= ' OR ';
                 }
             }
         }
         switch (get_class($subquery)) {
             case 'Zend_Search_Lucene_Search_Query_Phrase':
                 $vs_query .= '(' . $subquery->__toString() . ')';
                 break;
             case 'Zend_Search_Lucene_Index_Term':
                 $subquery = new Zend_Search_Lucene_Search_Query_Term($subquery);
                 // intentional fallthrough to next case here
             // intentional fallthrough to next case here
             case 'Zend_Search_Lucene_Search_Query_Term':
                 $vs_query .= '(' . $subquery->__toString() . ')';
                 break;
             case 'Zend_Search_Lucene_Search_Query_Range':
                 $vs_query .= '(' . $subquery->__toString() . ')';
                 break;
             default:
                 $vs_query .= '(' . $this->_queryToString($subquery) . ')';
                 break;
         }
         if (method_exists($subquery, "getBoost") && $subquery->getBoost() != 1) {
             $vs_query .= '^' . round($subquery->getBoost(), 4);
         }
     }
     return $vs_query;
 }

 /**
  * Transform entry to a subquery
  *
  * @param string $encoding
  * @return Zend_Search_Lucene_Search_Query
  * @throws Zend_Search_Lucene_Search_QueryParserException
  */
 public function getQuery($encoding)
 {
     if ($this->_fuzzyQuery) {
         throw new Zend_Search_Lucene_Search_QueryParserException('Fuzzy search is not supported yet.');
     }
     if (strpos($this->_term, '?') !== false || strpos($this->_term, '*') !== false) {
         throw new Zend_Search_Lucene_Search_QueryParserException('Wildcard queries are not supported yet.');
     }
     $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($this->_term, $encoding);
     if (count($tokens) == 0) {
         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->_boost);
         return $query;
     }
     //It's not empty or one term query
     $query = new Zend_Search_Lucene_Search_Query_MultiTerm();
     /**
      * @todo Process $token->getPositionIncrement() to support stemming, synonyms and other
      * analizer design features
      */
     foreach ($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->_boost);
     return $query;
 }

 /**
  * Transform entry to a subquery
  *
  * @param string $encoding
  * @return Zend_Search_Lucene_Search_Query
  * @throws Zend_Search_Lucene_Search_QueryParserException
  */
 public function getQuery($encoding)
 {
     if (strpos($this->_term, '?') !== false || strpos($this->_term, '*') !== false) {
         if ($this->_fuzzyQuery) {
             require_once __CA_LIB_DIR__ . '/core/Zend/Search/Lucene/Search/QueryParserException.php';
             throw new Zend_Search_Lucene_Search_QueryParserException('Fuzzy search is not supported for terms with wildcards.');
         }
         $pattern = '';
         $subPatterns = explode('*', $this->_term);
         $astericFirstPass = true;
         foreach ($subPatterns as $subPattern) {
             if (!$astericFirstPass) {
                 $pattern .= '*';
             } else {
                 $astericFirstPass = false;
             }
             $subPatternsL2 = explode('?', $subPattern);
             $qMarkFirstPass = true;
             foreach ($subPatternsL2 as $subPatternL2) {
                 if (!$qMarkFirstPass) {
                     $pattern .= '?';
                 } else {
                     $qMarkFirstPass = false;
                 }
                 $pattern .= $subPatternL2;
             }
         }
         $term = new Zend_Search_Lucene_Index_Term(strtolower($pattern), $this->_field);
         $query = new Zend_Search_Lucene_Search_Query_Wildcard($term);
         $query->setBoost($this->_boost);
         return $query;
     }
     $tokens = explode(" ", $this->_term);
     if (count($tokens) == 0) {
         return new Zend_Search_Lucene_Search_Query_Insignificant();
     }
     if (count($tokens) == 1 && !$this->_fuzzyQuery) {
         $term = new Zend_Search_Lucene_Index_Term(strtolower($tokens[0]), $this->_field);
         $query = new Zend_Search_Lucene_Search_Query_Term($term);
         $query->setBoost($this->_boost);
         return $query;
     }
     if (count($tokens) == 1 && $this->_fuzzyQuery) {
         $term = new Zend_Search_Lucene_Index_Term(strtolower($tokens[0]), $this->_field);
         $query = new Zend_Search_Lucene_Search_Query_Fuzzy($term, $this->_similarity);
         $query->setBoost($this->_boost);
         return $query;
     }
     if ($this->_fuzzyQuery) {
         require_once __CA_LIB_DIR__ . '/core/Zend/Search/Lucene/Search/QueryParserException.php';
         throw new Zend_Search_Lucene_Search_QueryParserException('Fuzzy search is supported only for non-multiple word terms');
     }
     //It's not empty or one term query
     $query = new Zend_Search_Lucene_Search_Query_MultiTerm();
     foreach ($tokens as $token) {
         $term = new Zend_Search_Lucene_Index_Term(strtolower($token), $this->_field);
         $query->addTerm($term, true);
     }
     $query->setBoost($this->_boost);
     return $query;
 }

 /**
  * Re-write queries into primitive queries
  * Also used for query optimization and binding to the index
  *
  * @param Zend_Search_Lucene $index
  * @return Zend_Search_Lucene_Search_Query
  */
 public function rewrite(Zend_Search_Lucene $index)
 {
     if (count($this->_terms) == 0) {
         return new Zend_Search_Lucene_Search_Query_Empty();
     }
     // Check, that all fields are qualified
     $allQualified = true;
     foreach ($this->_terms as $term) {
         if ($term->field === null) {
             $allQualified = false;
             break;
         }
     }
     if ($allQualified) {
         return $this;
     } else {
         /** transform multiterm query to boolean and apply rewrite() method to subqueries. */
         $query = new Zend_Search_Lucene_Search_Query_Boolean();
         $query->setBoost($this->getBoost());
         foreach ($this->_terms as $termId => $term) {
             $subquery = new Zend_Search_Lucene_Search_Query_Term($term);
             $query->addSubquery($subquery->rewrite($index), $this->_signs === null ? true : $this->_signs[$subqueryId]);
         }
         return $query;
     }
 }

 public function rewrite(Zend_Search_Lucene_Interface $index)
 {
     if ($this->_field === null) {
         $query = new Zend_Search_Lucene_Search_Query_Boolean();
         $query->setBoost($this->getBoost());
         if (Zend_Search_Lucene::getDefaultSearchField() === null) {
             $searchFields = $index->getFieldNames(true);
         } else {
             $searchFields = array(Zend_Search_Lucene::getDefaultSearchField());
         }
         foreach ($searchFields as $fieldName) {
             $subquery = new Zend_Search_Lucene_Search_Query_Preprocessing_Phrase($this->_phrase, $this->_phraseEncoding, $fieldName);
             $subquery->setSlop($this->getSlop());
             $query->addSubquery($subquery->rewrite($index));
         }
         $this->_matches = $query->getQueryTerms();
         return $query;
     }
     $term = new Zend_Search_Lucene_Index_Term($this->_phrase, $this->_field);
     if ($index->hasTerm($term)) {
         $query = new Zend_Search_Lucene_Search_Query_Term($term);
         $query->setBoost($this->getBoost());
         $this->_matches = $query->getQueryTerms();
         return $query;
     }
     $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($this->_phrase, $this->_phraseEncoding);
     if (count($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;
     }
     $position = -1;
     $query = new Zend_Search_Lucene_Search_Query_Phrase();
     foreach ($tokens as $token) {
         $position += $token->getPositionIncrement();
         $term = new Zend_Search_Lucene_Index_Term($token->getTermText(), $this->_field);
         $query->addTerm($term, $position);
         $query->setSlop($this->getSlop());
     }
     $this->_matches = $query->getQueryTerms();
     return $query;
 }

 /**
  * Transform entry to a subquery
  *
  * @return Zend_Search_Lucene_Search_Query
  * @throws Zend_Search_Lucene_Search_QueryParserException
  */
 public function getQuery()
 {
     if (strpos($this->_phrase, '?') !== false || strpos($this->_phrase, '*') !== false) {
         throw new Zend_Search_Lucene_Search_QueryParserException('Wildcards are only allowed in a single terms.');
     }
     $tokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($this->_phrase);
     if (count($tokens) == 0) {
         return new Zend_Search_Lucene_Search_Query_Empty();
     }
     if (count($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->_boost);
         return $query;
     }
     //It's not empty or one term query
     $query = new Zend_Search_Lucene_Search_Query_Phrase();
     foreach ($tokens as $token) {
         $term = new Zend_Search_Lucene_Index_Term($token->getTermText(), $this->_field);
         $query->addTerm($term, true);
         // all subterms are required
     }
     if ($this->_proximityQuery) {
         $query->setSlop($this->_wordsDistance);
     }
     $query->setBoost($this->_boost);
     return $query;
 }