/lenasys/trunk

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

/**

 * CodeIgniter

 *

 * An open source application development framework for PHP 5.1.6 or newer

 *

 * @package		CodeIgniter

 * @author		Esen Sagynov

 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.

 * @license		http://codeigniter.com/user_guide/license.html

 * @link		http://codeigniter.com

 * @since		Version 2.0.2

 * @filesource

 */

// --------------------------------------------------------------------

/**

 * CUBRID Result Class

 *

 * This class extends the parent result class: CI_DB_result

 *

 * @category	Database

 * @author		Esen Sagynov

 * @link		http://codeigniter.com/user_guide/database/

 */

class CI_DB_cubrid_result extends CI_DB_result {

	/**

	 * Number of rows in the result set

	 *

	 * @access	public

	 * @return	integer

	 */

	function num_rows()

	{

		return @cubrid_num_rows($this->result_id);

	}

	// --------------------------------------------------------------------

	/**

	 * Number of fields in the result set

	 *

	 * @access	public

	 * @return	integer

	 */

	function num_fields()

	{

		return @cubrid_num_fields($this->result_id);

	}

	// --------------------------------------------------------------------

	/**

	 * Fetch Field Names

	 *

	 * Generates an array of column names

	 *

	 * @access	public

	 * @return	array

	 */

	function list_fields()

	{

		return cubrid_column_names($this->result_id);

	}

	// --------------------------------------------------------------------

	/**

	 * Field data

	 *

	 * Generates an array of objects containing field meta-data

	 *

	 * @access	public

	 * @return	array

	 */

	function field_data()

	{

		$retval = array();

		$tablePrimaryKeys = array();

		while ($field = cubrid_fetch_field($this->result_id))

		{

			$F				= new stdClass();

			$F->name		= $field->name;

			$F->type		= $field->type;

			$F->default		= $field->def;

			$F->max_length	= $field->max_length;

			// At this moment primary_key property is not returned when

			// cubrid_fetch_field is called. The following code will

			// provide a patch for it. primary_key property will be added

			// in the next release.

			// TODO: later version of CUBRID will provide primary_key

			// property.

			// When PK is defined in CUBRID, an index is automatically

			// created in the db_index system table in the form of

			// pk_tblname_fieldname. So the following will count how many

			// columns are there which satisfy this format.

			// The query will search for exact single columns, thus

			// compound PK is not supported.

			$res = cubrid_query($this->conn_id,

				"SELECT COUNT(*) FROM db_index WHERE class_name = '" . $field->table .

				"' AND is_primary_key = 'YES' AND index_name = 'pk_" .

				$field->table . "_" . $field->name . "'"

			);

			if ($res)

			{

				$row = cubrid_fetch_array($res, CUBRID_NUM);

				$F->primary_key = ($row[0] > 0 ? 1 : null);

			}

			else

			{

				$F->primary_key = null;

			}

			if (is_resource($res))

			{

				cubrid_close_request($res);

				$this->result_id = FALSE;

			}

			$retval[] = $F;

		}

		return $retval;

	}

	// --------------------------------------------------------------------

	/**

	 * Free the result

	 *

	 * @return	null

	 */

	function free_result()

	{

		if(is_resource($this->result_id) ||

			get_resource_type($this->result_id) == "Unknown" &&

			preg_match('/Resource id #/', strval($this->result_id)))

		{

			cubrid_close_request($this->result_id);

			$this->result_id = FALSE;

		}

	}

	// --------------------------------------------------------------------

	/**

	 * Data Seek

	 *

	 * Moves the internal pointer to the desired offset. We call

	 * this internally before fetching results to make sure the

	 * result set starts at zero

	 *

	 * @access	private

	 * @return	array

	 */

	function _data_seek($n = 0)

	{

		return cubrid_data_seek($this->result_id, $n);

	}

	// --------------------------------------------------------------------

	/**

	 * Result - associative array

	 *

	 * Returns the result set as an array

	 *

	 * @access	private

	 * @return	array

	 */

	function _fetch_assoc()

	{

		return cubrid_fetch_assoc($this->result_id);

	}

	// --------------------------------------------------------------------

	/**

	 * Result - object

	 *

	 * Returns the result set as an object

	 *

	 * @access	private

	 * @return	object

	 */

	function _fetch_object()

	{

		return cubrid_fetch_object($this->result_id);

	}

}

/* End of file cubrid_result.php */

/* Location: ./system/database/drivers/cubrid/cubrid_result.php */