--- /dev/null
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category Zend
+ * @package Zend_Search_Lucene
+ * @subpackage Search
+ * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id: Phrase.php 16541 2009-07-07 06:59:03Z bkarwin $
+ */
+
+
+/**
+ * Zend_Search_Lucene_Search_Weight
+ */
+require_once 'Zend/Search/Lucene/Search/Weight.php';
+
+
+/**
+ * @category Zend
+ * @package Zend_Search_Lucene
+ * @subpackage Search
+ * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+class Zend_Search_Lucene_Search_Weight_Phrase extends Zend_Search_Lucene_Search_Weight
+{
+ /**
+ * IndexReader.
+ *
+ * @var Zend_Search_Lucene_Interface
+ */
+ private $_reader;
+
+ /**
+ * The query that this concerns.
+ *
+ * @var Zend_Search_Lucene_Search_Query_Phrase
+ */
+ private $_query;
+
+ /**
+ * Score factor
+ *
+ * @var float
+ */
+ private $_idf;
+
+ /**
+ * Zend_Search_Lucene_Search_Weight_Phrase constructor
+ *
+ * @param Zend_Search_Lucene_Search_Query_Phrase $query
+ * @param Zend_Search_Lucene_Interface $reader
+ */
+ public function __construct(Zend_Search_Lucene_Search_Query_Phrase $query,
+ Zend_Search_Lucene_Interface $reader)
+ {
+ $this->_query = $query;
+ $this->_reader = $reader;
+ }
+
+ /**
+ * The sum of squared weights of contained query clauses.
+ *
+ * @return float
+ */
+ public function sumOfSquaredWeights()
+ {
+ // compute idf
+ $this->_idf = $this->_reader->getSimilarity()->idf($this->_query->getTerms(), $this->_reader);
+
+ // compute query weight
+ $this->_queryWeight = $this->_idf * $this->_query->getBoost();
+
+ // square it
+ return $this->_queryWeight * $this->_queryWeight;
+ }
+
+
+ /**
+ * Assigns the query normalization factor to this.
+ *
+ * @param float $queryNorm
+ */
+ public function normalize($queryNorm)
+ {
+ $this->_queryNorm = $queryNorm;
+
+ // normalize query weight
+ $this->_queryWeight *= $queryNorm;
+
+ // idf for documents
+ $this->_value = $this->_queryWeight * $this->_idf;
+ }
+}
+
+