<?php // vim:ts=4:sw=4:noet
/*====================================================================== 
Copyright (C) 2006-2009, Walter Doekes
This file is part of KjwLib-php45.
 
KjwLib-php45 is free software: you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published by 
the Free Software Foundation, either version 3 of the License, or 
(at your option) any later version. 

KjwLib-php45 is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
GNU General Public License for more details. 

You should have received a copy of the GNU General Public License 
along with KjwLib-php45.  If not, see <http://www.gnu.org/licenses/>. 
======================================================================*/

require_once(dirname(__FILE__) . '/KjwResultSet.php');

/** @ingroup sql
 *
 * KjwArrayResultSet is a resultset class.
 *
 * This class takes an array as its input instead of an SQL result set resource.
 */
class KjwArrayResultSet extends KjwResultSet {
	var $_data;			/**< The data array. */
	var $_pointer;		/**< The array pointer. */

	/**
	 * Construct a KjwArrayResultSet.
	 *
	 * @param $resultset An array of associative arrays (dictionaries).
	 */
	function KjwArrayResultSet($resultset) {
		assert(is_array($resultset));
		parent::KjwResultSet();
		$this->_pointer = 0;
		$this->_data = $resultset; // PHP5 copies arrays by default as well, no?
	}

	/* [INHERITED DOCS] */
	function destroy() {
		unset($this->_data);
		unset($this->_pointer);
		parent::destroy();
	}

	/* [INHERITED DOCS] */
	function getNext() {
		if ($this->_pointer >= sizeof($this->_data))
			return false;
		return $this->_data[$this->_pointer++];
	}

	/* [INHERITED DOCS] */
	function at() {
		return $this->_pointer;
	}

	/* [INHERITED DOCS] */
	function size() {
		return sizeof($this->_data);
	}

	/* [INHERITED DOCS] */
	function seekAbs($offset) {
		if($offset < 0 || $offset >= sizeof($this->_data))
			return false;
		$this->_pointer = $offset;
		return true;
	}
}

?>