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<?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 Analysis
* @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: ShortWords.php 16971 2009-07-22 18:05:45Z mikaelkael $
*/
/** Zend_Search_Lucene_Analysis_TokenFilter */
require_once 'Zend/Search/Lucene/Analysis/TokenFilter.php';
/**
* Token filter that removes short words. What is short word can be configured with constructor.
*
* @category Zend
* @package Zend_Search_Lucene
* @subpackage Analysis
* @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_Analysis_TokenFilter_ShortWords extends Zend_Search_Lucene_Analysis_TokenFilter
{
/**
* Minimum allowed term length
* @var integer
*/
private $length;
/**
* Constructs new instance of this filter.
*
* @param integer $short minimum allowed length of term which passes this filter (default 2)
*/
public function __construct($length = 2) {
$this->length = $length;
}
/**
* Normalize Token or remove it (if null is returned)
*
* @param Zend_Search_Lucene_Analysis_Token $srcToken
* @return Zend_Search_Lucene_Analysis_Token
*/
public function normalize(Zend_Search_Lucene_Analysis_Token $srcToken) {
if (strlen($srcToken->getTermText()) < $this->length) {
return null;
} else {
return $srcToken;
}
}
}
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