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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 - 2009, EllisLab, Inc.
+ * @license http://codeigniter.com/user_guide/license.html
+ * @link http://codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Database Result Class
+ *
+ * This is the platform-independent result class.
+ * This class will not be called directly. Rather, the adapter
+ * class for the specific database will extend and instantiate it.
+ *
+ * @category Database
+ * @author ExpressionEngine Dev Team
+ * @link http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_result {
+
+ var $conn_id = NULL;
+ var $result_id = NULL;
+ var $result_array = array();
+ var $result_object = array();
+ var $current_row = 0;
+ var $num_rows = 0;
+ var $row_data = NULL;
+
+
+ /**
+ * Query result. Acts as a wrapper function for the following functions.
+ *
+ * @access public
+ * @param string can be "object" or "array"
+ * @return mixed either a result object or array
+ */
+ function result($type = 'object')
+ {
+ return ($type == 'object') ? $this->result_object() : $this->result_array();
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Query result. "object" version.
+ *
+ * @access public
+ * @return object
+ */
+ function result_object()
+ {
+ if (count($this->result_object) > 0)
+ {
+ return $this->result_object;
+ }
+
+ // In the event that query caching is on the result_id variable
+ // will return FALSE since there isn't a valid SQL resource so
+ // we'll simply return an empty array.
+ if ($this->result_id === FALSE OR $this->num_rows() == 0)
+ {
+ return array();
+ }
+
+ $this->_data_seek(0);
+ while ($row = $this->_fetch_object())
+ {
+ $this->result_object[] = $row;
+ }
+
+ return $this->result_object;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Query result. "array" version.
+ *
+ * @access public
+ * @return array
+ */
+ function result_array()
+ {
+ if (count($this->result_array) > 0)
+ {
+ return $this->result_array;
+ }
+
+ // In the event that query caching is on the result_id variable
+ // will return FALSE since there isn't a valid SQL resource so
+ // we'll simply return an empty array.
+ if ($this->result_id === FALSE OR $this->num_rows() == 0)
+ {
+ return array();
+ }
+
+ $this->_data_seek(0);
+ while ($row = $this->_fetch_assoc())
+ {
+ $this->result_array[] = $row;
+ }
+
+ return $this->result_array;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Query result. Acts as a wrapper function for the following functions.
+ *
+ * @access public
+ * @param string
+ * @param string can be "object" or "array"
+ * @return mixed either a result object or array
+ */
+ function row($n = 0, $type = 'object')
+ {
+ if ( ! is_numeric($n))
+ {
+ // We cache the row data for subsequent uses
+ if ( ! is_array($this->row_data))
+ {
+ $this->row_data = $this->row_array(0);
+ }
+
+ // array_key_exists() instead of isset() to allow for MySQL NULL values
+ if (array_key_exists($n, $this->row_data))
+ {
+ return $this->row_data[$n];
+ }
+ // reset the $n variable if the result was not achieved
+ $n = 0;
+ }
+
+ return ($type == 'object') ? $this->row_object($n) : $this->row_array($n);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Assigns an item into a particular column slot
+ *
+ * @access public
+ * @return object
+ */
+ function set_row($key, $value = NULL)
+ {
+ // We cache the row data for subsequent uses
+ if ( ! is_array($this->row_data))
+ {
+ $this->row_data = $this->row_array(0);
+ }
+
+ if (is_array($key))
+ {
+ foreach ($key as $k => $v)
+ {
+ $this->row_data[$k] = $v;
+ }
+
+ return;
+ }
+
+ if ($key != '' AND ! is_null($value))
+ {
+ $this->row_data[$key] = $value;
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Returns a single result row - object version
+ *
+ * @access public
+ * @return object
+ */
+ function row_object($n = 0)
+ {
+ $result = $this->result_object();
+
+ if (count($result) == 0)
+ {
+ return $result;
+ }
+
+ if ($n != $this->current_row AND isset($result[$n]))
+ {
+ $this->current_row = $n;
+ }
+
+ return $result[$this->current_row];
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Returns a single result row - array version
+ *
+ * @access public
+ * @return array
+ */
+ function row_array($n = 0)
+ {
+ $result = $this->result_array();
+
+ if (count($result) == 0)
+ {
+ return $result;
+ }
+
+ if ($n != $this->current_row AND isset($result[$n]))
+ {
+ $this->current_row = $n;
+ }
+
+ return $result[$this->current_row];
+ }
+
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Returns the "first" row
+ *
+ * @access public
+ * @return object
+ */
+ function first_row($type = 'object')
+ {
+ $result = $this->result($type);
+
+ if (count($result) == 0)
+ {
+ return $result;
+ }
+ return $result[0];
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Returns the "last" row
+ *
+ * @access public
+ * @return object
+ */
+ function last_row($type = 'object')
+ {
+ $result = $this->result($type);
+
+ if (count($result) == 0)
+ {
+ return $result;
+ }
+ return $result[count($result) -1];
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Returns the "next" row
+ *
+ * @access public
+ * @return object
+ */
+ function next_row($type = 'object')
+ {
+ $result = $this->result($type);
+
+ if (count($result) == 0)
+ {
+ return $result;
+ }
+
+ if (isset($result[$this->current_row + 1]))
+ {
+ ++$this->current_row;
+ }
+
+ return $result[$this->current_row];
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Returns the "previous" row
+ *
+ * @access public
+ * @return object
+ */
+ function previous_row($type = 'object')
+ {
+ $result = $this->result($type);
+
+ if (count($result) == 0)
+ {
+ return $result;
+ }
+
+ if (isset($result[$this->current_row - 1]))
+ {
+ --$this->current_row;
+ }
+ return $result[$this->current_row];
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * The following functions are normally overloaded by the identically named
+ * methods in the platform-specific driver -- except when query caching
+ * is used. When caching is enabled we do not load the other driver.
+ * These functions are primarily here to prevent undefined function errors
+ * when a cached result object is in use. They are not otherwise fully
+ * operational due to the unavailability of the database resource IDs with
+ * cached results.
+ */
+ function num_rows() { return $this->num_rows; }
+ function num_fields() { return 0; }
+ function list_fields() { return array(); }
+ function field_data() { return array(); }
+ function free_result() { return TRUE; }
+ function _data_seek() { return TRUE; }
+ function _fetch_assoc() { return array(); }
+ function _fetch_object() { return array(); }
+
+}
+// END DB_result class
+
+/* End of file DB_result.php */
+/* Location: ./system/database/DB_result.php */ \ No newline at end of file
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