/library/Zend/Search/Lucene/Search/Query/Empty.php
PHP | 139 lines | 40 code | 14 blank | 85 comment | 0 complexity | 628ed2ce3cc5a699ed8bc591b4fa8d97 MD5 | raw file
- <?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) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- /** Zend_Search_Lucene_Search_Query */
- require_once 'Zend/Search/Lucene/Search/Query.php';
- /** Zend_Search_Lucene_Search_Weight_Empty */
- require_once 'Zend/Search/Lucene/Search/Weight/Empty.php';
- /**
- * @category Zend
- * @package Zend_Search_Lucene
- * @subpackage Search
- * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- class Zend_Search_Lucene_Search_Query_Empty extends Zend_Search_Lucene_Search_Query
- {
- /**
- * Re-write query into primitive queries in the context of specified index
- *
- * @param Zend_Search_Lucene_Interface $index
- * @return Zend_Search_Lucene_Search_Query
- */
- public function rewrite(Zend_Search_Lucene_Interface $index)
- {
- return $this;
- }
- /**
- * Optimize query in the context of specified index
- *
- * @param Zend_Search_Lucene_Interface $index
- * @return Zend_Search_Lucene_Search_Query
- */
- public function optimize(Zend_Search_Lucene_Interface $index)
- {
- // "Empty" query is a primitive query and don't need to be optimized
- return $this;
- }
- /**
- * Constructs an appropriate Weight implementation for this query.
- *
- * @param Zend_Search_Lucene_Interface $reader
- * @return Zend_Search_Lucene_Search_Weight
- */
- public function createWeight(Zend_Search_Lucene_Interface $reader)
- {
- return new Zend_Search_Lucene_Search_Weight_Empty();
- }
- /**
- * Execute query in context of index reader
- * It also initializes necessary internal structures
- *
- * @param Zend_Search_Lucene_Interface $reader
- */
- public function execute(Zend_Search_Lucene_Interface $reader)
- {
- // Do nothing
- }
- /**
- * Get document ids likely matching the query
- *
- * It's an array with document ids as keys (performance considerations)
- *
- * @return array
- */
- public function matchedDocs()
- {
- return array();
- }
- /**
- * Score specified document
- *
- * @param integer $docId
- * @param Zend_Search_Lucene_Interface $reader
- * @return float
- */
- public function score($docId, Zend_Search_Lucene_Interface $reader)
- {
- return 0;
- }
- /**
- * Return query terms
- *
- * @return array
- */
- public function getQueryTerms()
- {
- return array();
- }
- /**
- * Highlight query terms
- *
- * @param integer &$colorIndex
- * @param Zend_Search_Lucene_Document_Html $doc
- */
- public function highlightMatchesDOM(Zend_Search_Lucene_Document_Html $doc, &$colorIndex)
- {
- // Do nothing
- }
- /**
- * Print a query
- *
- * @return string
- */
- public function __toString()
- {
- return '<EmptyQuery>';
- }
- }