<?php


/**


 * CodeIgniter


 *


 * An open source application development framework for PHP


 *


 * This content is released under the MIT License (MIT)


 *


 * Copyright (c) 2014 - 2019, British Columbia Institute of Technology


 *


 * Permission is hereby granted, free of charge, to any person obtaining a copy


 * of this software and associated documentation files (the "Software"), to deal


 * in the Software without restriction, including without limitation the rights


 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell


 * copies of the Software, and to permit persons to whom the Software is


 * furnished to do so, subject to the following conditions:


 *


 * The above copyright notice and this permission notice shall be included in


 * all copies or substantial portions of the Software.


 *


 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR


 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,


 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE


 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER


 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,


 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN


 * THE SOFTWARE.


 *


 * @package	CodeIgniter


 * @author	EllisLab Dev Team


 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)


 * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)


 * @license	https://opensource.org/licenses/MIT	MIT License


 * @link	https://codeigniter.com


 * @since	Version 2.1.0


 * @filesource


 */


defined('BASEPATH') OR exit('No direct script access allowed');





/**


 * PDO Result Class


 *


 * This class extends the parent result class: CI_DB_result


 *


 * @package		CodeIgniter


 * @subpackage	Drivers


 * @category	Database


 * @author		EllisLab Dev Team


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


 */


class CI_DB_pdo_result extends CI_DB_result {





	/**


	 * Number of rows in the result set


	 *


	 * @return	int


	 */


	public function num_rows()


	{


		if (is_int($this->num_rows))


		{


			return $this->num_rows;


		}


		elseif (count($this->result_array) > 0)


		{


			return $this->num_rows = count($this->result_array);


		}


		elseif (count($this->result_object) > 0)


		{


			return $this->num_rows = count($this->result_object);


		}


		elseif (($num_rows = $this->result_id->rowCount()) > 0)


		{


			return $this->num_rows = $num_rows;


		}





		return $this->num_rows = count($this->result_array());


	}





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





	/**


	 * Number of fields in the result set


	 *


	 * @return	int


	 */


	public function num_fields()


	{


		return $this->result_id->columnCount();


	}





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





	/**


	 * Fetch Field Names


	 *


	 * Generates an array of column names


	 *


	 * @return	bool


	 */


	public function list_fields()


	{


		$field_names = array();


		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)


		{


			// Might trigger an E_WARNING due to not all subdrivers


			// supporting getColumnMeta()


			$field_names[$i] = @$this->result_id->getColumnMeta($i);


			$field_names[$i] = $field_names[$i]['name'];


		}





		return $field_names;


	}





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





	/**


	 * Field data


	 *


	 * Generates an array of objects containing field meta-data


	 *


	 * @return	array


	 */


	public function field_data()


	{


		try


		{


			$retval = array();





			for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)


			{


				$field = $this->result_id->getColumnMeta($i);





				$retval[$i]			= new stdClass();


				$retval[$i]->name		= $field['name'];


				$retval[$i]->type		= isset($field['native_type']) ? $field['native_type'] : null;


				$retval[$i]->max_length		= ($field['len'] > 0) ? $field['len'] : NULL;


				$retval[$i]->primary_key	= (int) ( ! empty($field['flags']) && in_array('primary_key', $field['flags'], TRUE));


			}





			return $retval;


		}


		catch (Exception $e)


		{


			if ($this->db->db_debug)


			{


				return $this->db->display_error('db_unsupported_feature');


			}





			return FALSE;


		}


	}





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





	/**


	 * Free the result


	 *


	 * @return	void


	 */


	public function free_result()


	{


		if (is_object($this->result_id))


		{


			$this->result_id = FALSE;


		}


	}





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





	/**


	 * Result - associative array


	 *


	 * Returns the result set as an array


	 *


	 * @return	array


	 */


	protected function _fetch_assoc()


	{


		return $this->result_id->fetch(PDO::FETCH_ASSOC);


	}





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





	/**


	 * Result - object


	 *


	 * Returns the result set as an object


	 *


	 * @param	string	$class_name


	 * @return	object


	 */


	protected function _fetch_object($class_name = 'stdClass')


	{


		return $this->result_id->fetchObject($class_name);


	}





}


