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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to version 1.0 of the Zend Framework
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* license, that is bundled with this package in the file LICENSE, and
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* is available through the world-wide-web at the following URL:
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* http://www.zend.com/license/framework/1_0.txt. If you did not receive
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* a copy of the Zend Framework license and are unable to obtain it
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* through the world-wide-web, please send a note to license@zend.com
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* so we can mail you a copy immediately.
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*
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* @package Zend_Search_Lucene
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* @subpackage Search
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* @copyright Copyright (c) 2005-2006 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://www.zend.com/license/framework/1_0.txt Zend Framework License version 1.0
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*/
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/**
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* Calculate query weights and build query scorers.
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*
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* A Weight is constructed by a query Query->createWeight().
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* The sumOfSquaredWeights() method is then called on the top-level
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* query to compute the query normalization factor Similarity->queryNorm(float).
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* This factor is then passed to normalize(float). At this point the weighting
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* is complete.
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*
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* @package Zend_Search_Lucene
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* @subpackage Search
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* @copyright Copyright (c) 2005-2006 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://www.zend.com/license/framework/1_0.txt Zend Framework License version 1.0
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*/
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abstract class Zend_Search_Lucene_Search_Weight
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{
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/**
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* The weight for this query.
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*
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* @return float
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*/
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abstract public function getValue();
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/**
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* The sum of squared weights of contained query clauses.
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*
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* @return float
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*/
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abstract public function sumOfSquaredWeights();
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/**
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* Assigns the query normalization factor to this.
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*
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* @param $norm
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*/
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abstract public function normalize($norm);
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}
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