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