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Filename : Extension.php
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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2008 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Table;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Language\Text;
use Joomla\Database\DatabaseDriver;

/**
 * Extension table
 *
 * @since  1.7.0
 */
class Extension extends Table
{
	/**
	 * Indicates that columns fully support the NULL value in the database
	 *
	 * @var    boolean
	 * @since  4.0.0
	 */
	protected $_supportNullValue = true;

	/**
	 * Ensure the params in json encoded in the bind method
	 *
	 * @var    array
	 * @since  4.0.0
	 */
	protected $_jsonEncode = ['params'];

	/**
	 * Custom data can be used by extension developers
	 *
	 * @var    string
	 * @since  4.0.0
	 */
	public $custom_data = '';

	/**
	 * Constructor
	 *
	 * @param   DatabaseDriver  $db  Database driver object.
	 *
	 * @since   1.7.0
	 */
	public function __construct(DatabaseDriver $db)
	{
		parent::__construct('#__extensions', 'extension_id', $db);

		// Set the alias since the column is called enabled
		$this->setColumnAlias('published', 'enabled');
	}

	/**
	 * Overloaded check function
	 *
	 * @return  boolean  True if the object is ok
	 *
	 * @see     Table::check()
	 * @since   1.7.0
	 */
	public function check()
	{
		try
		{
			parent::check();
		}
		catch (\Exception $e)
		{
			$this->setError($e->getMessage());

			return false;
		}

		// Check for valid name
		if (trim($this->name) == '' || trim($this->element) == '')
		{
			$this->setError(Text::_('JLIB_DATABASE_ERROR_MUSTCONTAIN_A_TITLE_EXTENSION'));

			return false;
		}

		return true;
	}

	/**
	 * Method to create and execute a SELECT WHERE query.
	 *
	 * @param   array  $options  Array of options
	 *
	 * @return  string  The database query result
	 *
	 * @since   1.7.0
	 */
	public function find($options = array())
	{
		// Get the DatabaseQuery object
		$query = $this->_db->getQuery(true);

		foreach ($options as $col => $val)
		{
			$query->where($col . ' = ' . $this->_db->quote($val));
		}

		$query->select($this->_db->quoteName('extension_id'))
			->from($this->_db->quoteName('#__extensions'));
		$this->_db->setQuery($query);

		return $this->_db->loadResult();
	}
}