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<?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
 * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license             http://codeigniter.com/user_guide/license.html
 * @author              EllisLab Dev Team
 * @link                http://codeigniter.com
 * @since               Version 2.1.2
 * @filesource
 */

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

/**
 * PDO Result Class
 *
 * This class extends the parent result class: CI_DB_result
 *
 * @category    Database
 * @author              EllisLab Dev Team
 * @link                http://codeigniter.com/user_guide/database/
 */
class CI_DB_pdo_result extends CI_DB_result {

        public $num_rows;

        /**
         * Number of rows in the result set
         *
         * @return      int
         */
        public function num_rows()
        {
                if (is_int($this->num_rows))
                {
                        return $this->num_rows;
                }
                elseif (($this->num_rows = $this->result_id->rowCount()) > 0)
                {
                        return $this->num_rows;
                }

                $this->num_rows = count($this->result_id->fetchAll());
                $this->result_id->execute();
                return $this->num_rows;
        }

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

        /**
         * Number of fields in the result set
         *
         * @access      public
         * @return      integer
         */
        function num_fields()
        {
                return $this->result_id->columnCount();
        }

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

        /**
         * Fetch Field Names
         *
         * Generates an array of column names
         *
         * @access      public
         * @return      array
         */
        function list_fields()
        {
                if ($this->db->db_debug)
                {
                        return $this->db->display_error('db_unsuported_feature');
                }
                return FALSE;
        }

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

        /**
         * Field data
         *
         * Generates an array of objects containing field meta-data
         *
         * @access      public
         * @return      array
         */
        function field_data()
        {
                $data = array();
        
                try
                {
                        for($i = 0; $i < $this->num_fields(); $i++)
                        {
                                $data[] = $this->result_id->getColumnMeta($i);
                        }
                        
                        return $data;
                }
                catch (Exception $e)
                {
                        if ($this->db->db_debug)
                        {
                                return $this->db->display_error('db_unsuported_feature');
                        }
                        return FALSE;
                }
        }

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

        /**
         * Free the result
         *
         * @return      null
         */
        function free_result()
        {
                if (is_object($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 FALSE;
        }

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

        /**
         * Result - associative array
         *
         * Returns the result set as an array
         *
         * @access      private
         * @return      array
         */
        function _fetch_assoc()
        {
                return $this->result_id->fetch(PDO::FETCH_ASSOC);
        }

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

        /**
         * Result - object
         *
         * Returns the result set as an object
         *
         * @access      private
         * @return      object
         */
        function _fetch_object()
        {       
                return $this->result_id->fetchObject();
        }

}


/* End of file pdo_result.php */
/* Location: ./system/database/drivers/pdo/pdo_result.php */