mirror of
https://github.com/dg/dibi.git
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24bf999cd9
* added support for Nette_Debug * renamed NObject -> Nette_Object (Nette::Object in PHP 5.3)
93 lines
2.1 KiB
PHP
93 lines
2.1 KiB
PHP
<?php
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/**
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* dibi - tiny'n'smart database abstraction layer
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* ----------------------------------------------
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*
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* Copyright (c) 2005, 2008 David Grudl (http://www.davidgrudl.com)
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*
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* This source file is subject to the "dibi license" that is bundled
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* with this package in the file license.txt.
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*
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* For more information please see http://dibiphp.com/
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*
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* @copyright Copyright (c) 2005, 2008 David Grudl
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* @license http://dibiphp.com/license dibi license
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* @link http://dibiphp.com/
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* @package dibi
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*/
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/**
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* Default implementation of IDataSource for dibi.
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*
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* @author David Grudl
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* @copyright Copyright (c) 2005, 2008 David Grudl
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* @package dibi
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* @version $Revision$ $Date$
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*/
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class DibiDataSource extends Nette_Object implements IDataSource
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{
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/** @var DibiConnection */
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private $connection;
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/** @var string */
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private $sql;
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/** @var int */
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private $count;
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/**
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* @param string SQL command or table name, as data source
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* @param DibiConnection connection
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*/
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public function __construct($sql, DibiConnection $connection = NULL)
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{
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if (strpos($sql, ' ') === FALSE) {
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// table name
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$this->sql = $sql;
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} else {
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// SQL command
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$this->sql = '(' . $sql . ') AS [source]';
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}
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$this->connection = $connection === NULL ? dibi::getConnection() : $connection;
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}
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/**
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* @param int offset
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* @param int limit
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* @param array columns
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* @return ArrayIterator
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*/
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public function getIterator($offset = NULL, $limit = NULL, $cols = NULL)
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{
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return $this->connection->query('
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SELECT *
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FROM', $this->sql, '
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%ofs %lmt', $offset, $limit
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);
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}
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/**
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* @return int
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*/
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public function count()
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{
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if ($this->count === NULL) {
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$this->count = $this->connection->query('
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SELECT COUNT(*) FROM', $this->sql
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)->fetchSingle();
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}
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return $this->count;
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}
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}
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