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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 Analysis
* @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
*/
/** Zend_Search_Lucene_Analysis_Token */
require_once 'Zend/Search/Lucene/Analysis/Token.php';
/** Zend_Search_Lucene_Analysis_Analyzer_Common_Text */
require_once 'Zend/Search/Lucene/Analysis/Analyzer/Common/Text.php';
/** Zend_Search_Lucene_Analysis_Analyzer_Common_Text_CaseInsensitive */
require_once 'Zend/Search/Lucene/Analysis/Analyzer/Common/Text/CaseInsensitive.php';
/**
* An Analyzer is used to analyze text.
* It thus represents a policy for extracting index terms from text.
*
* Note:
* Lucene Java implementation is oriented to streams. It provides effective work
* with a huge documents (more then 20Mb).
* But engine itself is not oriented such documents.
* Thus Zend_Search_Lucene analysis API works with data strings and sets (arrays).
*
* @package Zend_Search_Lucene
* @subpackage Analysis
* @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_Analysis_Analyzer
{
/**
* The Analyzer implementation used by default.
*
* @var Zend_Search_Lucene_Analysis_Analyzer
*/
static private $_defaultImpl;
/**
* Tokenize text to a terms
* Returns array of Zend_Search_Lucene_Analysis_Token objects
*
* @param string $data
* @return array
*/
abstract public function tokenize($data);
/**
* Set the default Analyzer implementation used by indexing code.
*
* @param Zend_Search_Lucene_Analysis_Analyzer $similarity
*/
static public function setDefault(Zend_Search_Lucene_Analysis_Analyzer $analyzer)
{
self::$_defaultImpl = $analyzer;
}
/**
* Return the default Analyzer implementation used by indexing code.
*
* @return Zend_Search_Lucene_Analysis_Analyzer
*/
static public function getDefault()
{
if (!self::$_defaultImpl instanceof Zend_Search_Lucene_Analysis_Analyzer) {
self::$_defaultImpl = new Zend_Search_Lucene_Analysis_Analyzer_Common_Text_CaseInsensitive();
}
return self::$_defaultImpl;
}
}
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