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

/**

 * CodeIgniter

 *

 * An open source application development framework for PHP 4.3.2 or newer

 *

 * @package	 	CodeIgniter

 * @author	 	ExpressionEngine Dev Team

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

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

 * @link		http://codeigniter.com

 * @since	   	Version 1.0

 * @filesource

 */

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

/**

 * oci8 Result Class

 *

 * This class extends the parent result class: CI_DB_result

 *

 * @category	Database

 * @author	 	ExpressionEngine Dev Team

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

 */

class CI_DB_oci8_result extends CI_DB_result {

	var $stmt_id;

	var $curs_id;

	var $limit_used;

	/**

	 * Number of rows in the result set.

	 *

	 * Oracle doesn't have a graceful way to retun the number of rows

	 * so we have to use what amounts to a hack.

	 *

	 *

	 * @access  public

	 * @return  integer

	 */

	function num_rows()

	{

		$rowcount = count($this->result_array());

		@ociexecute($this->stmt_id);

		if ($this->curs_id)

		{

			@ociexecute($this->curs_id);

		}

		return $rowcount;

	}

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

	/**

	 * Number of fields in the result set

	 *

	 * @access  public

	 * @return  integer

	 */

	function num_fields()

	{

		$count = @ocinumcols($this->stmt_id);

		// if we used a limit we subtract it

		if ($this->limit_used)

		{

			$count = $count - 1;

		}

		return $count;

	}

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

	/**

	 * Fetch Field Names

	 *

	 * Generates an array of column names

	 *

	 * @access	public

	 * @return	array

	 */

	function list_fields()

	{

		$field_names = array();

		$fieldCount = $this->num_fields();

		for ($c = 1; $c <= $fieldCount; $c++)

		{

			$field_names[] = ocicolumnname($this->stmt_id, $c);

		}

		return $field_names;

	}

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

	/**

	 * Field data

	 *

	 * Generates an array of objects containing field meta-data

	 *

	 * @access  public

	 * @return  array

	 */

	function field_data()

	{

		$retval = array();

		$fieldCount = $this->num_fields();

		for ($c = 1; $c <= $fieldCount; $c++)

		{

			$F			  = new stdClass();

			$F->name		= ocicolumnname($this->stmt_id, $c);

			$F->type		= ocicolumntype($this->stmt_id, $c);

			$F->max_length  = ocicolumnsize($this->stmt_id, $c);

			$retval[] = $F;

		}

		return $retval;

	}

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

	/**

	 * Free the result

	 *

	 * @return	null

	 */

	function free_result()

	{

		if (is_resource($this->result_id))

		{

			ocifreestatement($this->result_id);

			$this->result_id = FALSE;

		}

	}

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

	/**

	 * Result - associative array

	 *

	 * Returns the result set as an array

	 *

	 * @access  private

	 * @return  array

	 */

	function _fetch_assoc(&$row)

	{

		$id = ($this->curs_id) ? $this->curs_id : $this->stmt_id;

		return ocifetchinto($id, $row, OCI_ASSOC + OCI_RETURN_NULLS);

	}

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

	/**

	 * Result - object

	 *

	 * Returns the result set as an object

	 *

	 * @access  private

	 * @return  object

	 */

	function _fetch_object()

	{

		$result = array();

		// If PHP 5 is being used we can fetch an result object

		if (function_exists('oci_fetch_object'))

		{

			$id = ($this->curs_id) ? $this->curs_id : $this->stmt_id;

			return @oci_fetch_object($id);

		}

		// If PHP 4 is being used we have to build our own result

		foreach ($this->result_array() as $key => $val)

		{

			$obj = new stdClass();

			if (is_array($val))

			{

				foreach ($val as $k => $v)

				{

					$obj->$k = $v;

				}

			}

			else

			{

				$obj->$key = $val;

			}

			$result[] = $obj;

		}

		return $result;

	}

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

	/**

	 * Query result.  "array" version.

	 *

	 * @access  public

	 * @return  array

	 */

	function result_array()

	{

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

		{

			return $this->result_array;

		}

		// oracle's fetch functions do not return arrays.

		// The information is returned in reference parameters

		$row = NULL;

		while ($this->_fetch_assoc($row))

		{

			$this->result_array[] = $row;

		}

		return $this->result_array;

	}

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

	/**

	 * 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; // Not needed

	}

}

/* End of file oci8_result.php */

/* Location: ./system/database/drivers/oci8/oci8_result.php */