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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
 * @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 */