updateadapter.php

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<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Updater
 *
 * @copyright   Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

jimport('joomla.base.adapterinstance');

/**
 * UpdateAdapter class.
 *
 * @package     Joomla.Platform
 * @subpackage  Updater
 * @since       11.1
 */
class JUpdateAdapter extends JAdapterInstance
{
        /**
         * Resource handle for the XML Parser
         *
         * @var    resource
         * @since  12.1
         */
        protected $xmlParser;

        /**
         * Element call stack
         *
         * @var    array
         * @since  12.1
         */
        protected $stack = array('base');

        /**
         * ID of update site
         *
         * @var    string
         * @since  12.1
         */
        protected $updateSiteId = 0;

        /**
         * Columns in the extensions table to be updated
         *
         * @var    array
         * @since  12.1
         */
        protected $updatecols = array('NAME', 'ELEMENT', 'TYPE', 'FOLDER', 'CLIENT', 'VERSION', 'DESCRIPTION', 'INFOURL');

        /**
         * Gets the reference to the current direct parent
         *
         * @return  object
         *
         * @since   11.1
         */
        protected function _getStackLocation()
        {
                return implode('->', $this->stack);
        }

        /**
         * Gets the reference to the last tag
         *
         * @return  object
         *
         * @since   11.1
         */
        protected function _getLastTag()
        {
                return $this->stack[count($this->stack) - 1];
        }
}