Renaming Active Record to Query Builder across the system

1 files changed, 0 insertions, 2217 deletions

diff --git a/system/database/DB_active_rec.php b/system/database/DB_active_rec.php
deleted file mode 100644
index 424735157..000000000
--- a/system/database/DB_active_rec.php
+++ /dev/null
@@ -1,2217 +0,0 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * CodeIgniter
- *
- * An open source application development framework for PHP 5.1.6 or newer
- *
- * NOTICE OF LICENSE
- *
- * Licensed under the Open Software License version 3.0
- *
- * This source file is subject to the Open Software License (OSL 3.0) that is
- * bundled with this package in the files license.txt / license.rst.  It is
- * also available through the world wide web at this URL:
- * http://opensource.org/licenses/OSL-3.0
- * If you did not receive a copy of the license and are unable to obtain it
- * through the world wide web, please send an email to
- * licensing@ellislab.com so we can send you a copy immediately.
- *
- * @package		CodeIgniter
- * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
- * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
- * @link		http://codeigniter.com
- * @since		Version 1.0
- * @filesource
- */
-
-// ------------------------------------------------------------------------
-
-/**
- * Active Record Class
- *
- * This is the platform-independent base Active Record implementation class.
- *
- * @package		CodeIgniter
- * @subpackage	Drivers
- * @category	Database
- * @author		EllisLab Dev Team
- * @link		http://codeigniter.com/user_guide/database/
- */
-class CI_DB_active_record extends CI_DB_driver {
-
-	protected $return_delete_sql		= FALSE;
-	protected $reset_delete_data		= FALSE;
-
-	protected $ar_select			= array();
-	protected $ar_distinct			= FALSE;
-	protected $ar_from			= array();
-	protected $ar_join			= array();
-	protected $ar_where			= array();
-	protected $ar_like			= array();
-	protected $ar_groupby			= array();
-	protected $ar_having			= array();
-	protected $ar_keys			= array();
-	protected $ar_limit			= FALSE;
-	protected $ar_offset			= FALSE;
-	protected $ar_order			= FALSE;
-	protected $ar_orderby			= array();
-	protected $ar_set			= array();
-	protected $ar_wherein			= array();
-	protected $ar_aliased_tables		= array();
-	protected $ar_store_array		= array();
-	protected $ar_where_group_started	= FALSE;
-	protected $ar_where_group_count		= 0;
-
-	// Active Record Caching variables
-	protected $ar_caching				= FALSE;
-	protected $ar_cache_exists			= array();
-	protected $ar_cache_select			= array();
-	protected $ar_cache_from			= array();
-	protected $ar_cache_join			= array();
-	protected $ar_cache_where			= array();
-	protected $ar_cache_like			= array();
-	protected $ar_cache_groupby			= array();
-	protected $ar_cache_having			= array();
-	protected $ar_cache_orderby			= array();
-	protected $ar_cache_set				= array();
-
-	protected $ar_no_escape 			= array();
-	protected $ar_cache_no_escape			= array();
-
-	/**
-	 * Select
-	 *
-	 * Generates the SELECT portion of the query
-	 *
-	 * @param	string
-	 * @return	object
-	 */
-	public function select($select = '*', $escape = NULL)
-	{
-		if (is_string($select))
-		{
-			$select = explode(',', $select);
-		}
-
-		foreach ($select as $val)
-		{
-			$val = trim($val);
-
-			if ($val != '')
-			{
-				$this->ar_select[] = $val;
-				$this->ar_no_escape[] = $escape;
-
-				if ($this->ar_caching === TRUE)
-				{
-					$this->ar_cache_select[] = $val;
-					$this->ar_cache_exists[] = 'select';
-					$this->ar_cache_no_escape[] = $escape;
-				}
-			}
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Select Max
-	 *
-	 * Generates a SELECT MAX(field) portion of a query
-	 *
-	 * @param	string	the field
-	 * @param	string	an alias
-	 * @return	object
-	 */
-	public function select_max($select = '', $alias = '')
-	{
-		return $this->_max_min_avg_sum($select, $alias, 'MAX');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Select Min
-	 *
-	 * Generates a SELECT MIN(field) portion of a query
-	 *
-	 * @param	string	the field
-	 * @param	string	an alias
-	 * @return	object
-	 */
-	public function select_min($select = '', $alias = '')
-	{
-		return $this->_max_min_avg_sum($select, $alias, 'MIN');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Select Average
-	 *
-	 * Generates a SELECT AVG(field) portion of a query
-	 *
-	 * @param	string	the field
-	 * @param	string	an alias
-	 * @return	object
-	 */
-	public function select_avg($select = '', $alias = '')
-	{
-		return $this->_max_min_avg_sum($select, $alias, 'AVG');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Select Sum
-	 *
-	 * Generates a SELECT SUM(field) portion of a query
-	 *
-	 * @param	string	the field
-	 * @param	string	an alias
-	 * @return	object
-	 */
-	public function select_sum($select = '', $alias = '')
-	{
-		return $this->_max_min_avg_sum($select, $alias, 'SUM');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Processing Function for the four functions above:
-	 *
-	 *	select_max()
-	 *	select_min()
-	 *	select_avg()
-	 *	select_sum()
-	 *
-	 * @param	string	the field
-	 * @param	string	an alias
-	 * @return	object
-	 */
-	protected function _max_min_avg_sum($select = '', $alias = '', $type = 'MAX')
-	{
-		if ( ! is_string($select) OR $select == '')
-		{
-			$this->display_error('db_invalid_query');
-		}
-
-		$type = strtoupper($type);
-
-		if ( ! in_array($type, array('MAX', 'MIN', 'AVG', 'SUM')))
-		{
-			show_error('Invalid function type: '.$type);
-		}
-
-		if ($alias == '')
-		{
-			$alias = $this->_create_alias_from_table(trim($select));
-		}
-
-		$sql = $this->_protect_identifiers($type.'('.trim($select).')').' AS '.$this->_protect_identifiers(trim($alias));
-		$this->ar_select[] = $sql;
-
-		if ($this->ar_caching === TRUE)
-		{
-			$this->ar_cache_select[] = $sql;
-			$this->ar_cache_exists[] = 'select';
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Determines the alias name based on the table
-	 *
-	 * @param	string
-	 * @return	string
-	 */
-	protected function _create_alias_from_table($item)
-	{
-		if (strpos($item, '.') !== FALSE)
-		{
-			return end(explode('.', $item));
-		}
-
-		return $item;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * DISTINCT
-	 *
-	 * Sets a flag which tells the query string compiler to add DISTINCT
-	 *
-	 * @param	bool
-	 * @return	object
-	 */
-	public function distinct($val = TRUE)
-	{
-		$this->ar_distinct = (is_bool($val)) ? $val : TRUE;
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * From
-	 *
-	 * Generates the FROM portion of the query
-	 *
-	 * @param	mixed	can be a string or array
-	 * @return	object
-	 */
-	public function from($from)
-	{
-		foreach ((array)$from as $val)
-		{
-			if (strpos($val, ',') !== FALSE)
-			{
-				foreach (explode(',', $val) as $v)
-				{
-					$v = trim($v);
-					$this->_track_aliases($v);
-					$v = $this->ar_from[] = $this->_protect_identifiers($v, TRUE, NULL, FALSE);
-
-					if ($this->ar_caching === TRUE)
-					{
-						$this->ar_cache_from[] = $v;
-						$this->ar_cache_exists[] = 'from';
-					}
-				}
-			}
-			else
-			{
-				$val = trim($val);
-
-				// Extract any aliases that might exist. We use this information
-				// in the _protect_identifiers to know whether to add a table prefix
-				$this->_track_aliases($val);
-				$this->ar_from[] = $val = $this->_protect_identifiers($val, TRUE, NULL, FALSE);
-
-				if ($this->ar_caching === TRUE)
-				{
-					$this->ar_cache_from[] = $val;
-					$this->ar_cache_exists[] = 'from';
-				}
-			}
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Join
-	 *
-	 * Generates the JOIN portion of the query
-	 *
-	 * @param	string
-	 * @param	string	the join condition
-	 * @param	string	the type of join
-	 * @return	object
-	 */
-	public function join($table, $cond, $type = '')
-	{
-		if ($type != '')
-		{
-			$type = strtoupper(trim($type));
-
-			if ( ! in_array($type, array('LEFT', 'RIGHT', 'OUTER', 'INNER', 'LEFT OUTER', 'RIGHT OUTER')))
-			{
-				$type = '';
-			}
-			else
-			{
-				$type .= ' ';
-			}
-		}
-
-		// Extract any aliases that might exist. We use this information
-		// in the _protect_identifiers to know whether to add a table prefix
-		$this->_track_aliases($table);
-
-		// Strip apart the condition and protect the identifiers
-		if (preg_match('/([\w\.]+)([\W\s]+)(.+)/', $cond, $match))
-		{
-			$cond = $this->_protect_identifiers($match[1]).$match[2].$this->_protect_identifiers($match[3]);
-		}
-
-		// Assemble the JOIN statement
-		$this->ar_join[] = $join = $type.'JOIN '.$this->_protect_identifiers($table, TRUE, NULL, FALSE).' ON '.$cond;
-
-		if ($this->ar_caching === TRUE)
-		{
-			$this->ar_cache_join[] = $join;
-			$this->ar_cache_exists[] = 'join';
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Where
-	 *
-	 * Generates the WHERE portion of the query. Separates
-	 * multiple calls with AND
-	 *
-	 * @param	mixed
-	 * @param	mixed
-	 * @return	object
-	 */
-	public function where($key, $value = NULL, $escape = TRUE)
-	{
-		return $this->_where($key, $value, 'AND ', $escape);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * OR Where
-	 *
-	 * Generates the WHERE portion of the query. Separates
-	 * multiple calls with OR
-	 *
-	 * @param	mixed
-	 * @param	mixed
-	 * @return	object
-	 */
-	public function or_where($key, $value = NULL, $escape = TRUE)
-	{
-		return $this->_where($key, $value, 'OR ', $escape);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Where
-	 *
-	 * Called by where() or or_where()
-	 *
-	 * @param	mixed
-	 * @param	mixed
-	 * @param	string
-	 * @return	object
-	 */
-	protected function _where($key, $value = NULL, $type = 'AND ', $escape = NULL)
-	{
-		$type = $this->_group_get_type($type);
-
-		if ( ! is_array($key))
-		{
-			$key = array($key => $value);
-		}
-
-		// If the escape value was not set will will base it on the global setting
-		if ( ! is_bool($escape))
-		{
-			$escape = $this->_protect_identifiers;
-		}
-
-		foreach ($key as $k => $v)
-		{
-			$prefix = (count($this->ar_where) === 0 AND count($this->ar_cache_where) === 0) ? '' : $type;
-
-			if (is_null($v) && ! $this->_has_operator($k))
-			{
-				// value appears not to have been set, assign the test to IS NULL
-				$k .= ' IS NULL';
-			}
-
-			if ( ! is_null($v))
-			{
-				if ($escape === TRUE)
-				{
-					$k = $this->_protect_identifiers($k, FALSE, $escape);
-					$v = ' '.$this->escape($v);
-				}
-
-				if ( ! $this->_has_operator($k))
-				{
-					$k .= ' = ';
-				}
-			}
-			else
-			{
-				$k = $this->_protect_identifiers($k, FALSE, $escape);
-			}
-
-			$this->ar_where[] = $prefix.$k.$v;
-			if ($this->ar_caching === TRUE)
-			{
-				$this->ar_cache_where[] = $prefix.$k.$v;
-				$this->ar_cache_exists[] = 'where';
-			}
-
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Where_in
-	 *
-	 * Generates a WHERE field IN ('item', 'item') SQL query joined with
-	 * AND if appropriate
-	 *
-	 * @param	string	The field to search
-	 * @param	array	The values searched on
-	 * @return	object
-	 */
-	public function where_in($key = NULL, $values = NULL)
-	{
-		return $this->_where_in($key, $values);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Where_in_or
-	 *
-	 * Generates a WHERE field IN ('item', 'item') SQL query joined with
-	 * OR if appropriate
-	 *
-	 * @param	string	The field to search
-	 * @param	array	The values searched on
-	 * @return	object
-	 */
-	public function or_where_in($key = NULL, $values = NULL)
-	{
-		return $this->_where_in($key, $values, FALSE, 'OR ');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Where_not_in
-	 *
-	 * Generates a WHERE field NOT IN ('item', 'item') SQL query joined
-	 * with AND if appropriate
-	 *
-	 * @param	string	The field to search
-	 * @param	array	The values searched on
-	 * @return	object
-	 */
-	public function where_not_in($key = NULL, $values = NULL)
-	{
-		return $this->_where_in($key, $values, TRUE);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Where_not_in_or
-	 *
-	 * Generates a WHERE field NOT IN ('item', 'item') SQL query joined
-	 * with OR if appropriate
-	 *
-	 * @param	string	The field to search
-	 * @param	array	The values searched on
-	 * @return	object
-	 */
-	public function or_where_not_in($key = NULL, $values = NULL)
-	{
-		return $this->_where_in($key, $values, TRUE, 'OR ');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Where_in
-	 *
-	 * Called by where_in, where_in_or, where_not_in, where_not_in_or
-	 *
-	 * @param	string	The field to search
-	 * @param	array	The values searched on
-	 * @param	boolean	If the statement would be IN or NOT IN
-	 * @param	string
-	 * @return	object
-	 */
-	protected function _where_in($key = NULL, $values = NULL, $not = FALSE, $type = 'AND ')
-	{
-		if ($key === NULL OR $values === NULL)
-		{
-			return;
-		}
-
-		$type = $this->_group_get_type($type);
-
-		if ( ! is_array($values))
-		{
-			$values = array($values);
-		}
-
-		$not = ($not) ? ' NOT' : '';
-
-		foreach ($values as $value)
-		{
-			$this->ar_wherein[] = $this->escape($value);
-		}
-
-		$prefix = (count($this->ar_where) === 0) ? '' : $type;
-		$this->ar_where[] = $where_in = $prefix.$this->_protect_identifiers($key).$not.' IN ('.implode(', ', $this->ar_wherein).') ';
-
-		if ($this->ar_caching === TRUE)
-		{
-			$this->ar_cache_where[] = $where_in;
-			$this->ar_cache_exists[] = 'where';
-		}
-
-		// reset the array for multiple calls
-		$this->ar_wherein = array();
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Like
-	 *
-	 * Generates a %LIKE% portion of the query. Separates
-	 * multiple calls with AND
-	 *
-	 * @param	mixed
-	 * @param	mixed
-	 * @return	object
-	 */
-	public function like($field, $match = '', $side = 'both')
-	{
-		return $this->_like($field, $match, 'AND ', $side);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Not Like
-	 *
-	 * Generates a NOT LIKE portion of the query. Separates
-	 * multiple calls with AND
-	 *
-	 * @param	mixed
-	 * @param	mixed
-	 * @return	object
-	 */
-	public function not_like($field, $match = '', $side = 'both')
-	{
-		return $this->_like($field, $match, 'AND ', $side, 'NOT');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * OR Like
-	 *
-	 * Generates a %LIKE% portion of the query. Separates
-	 * multiple calls with OR
-	 *
-	 * @param	mixed
-	 * @param	mixed
-	 * @return	object
-	 */
-	public function or_like($field, $match = '', $side = 'both')
-	{
-		return $this->_like($field, $match, 'OR ', $side);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * OR Not Like
-	 *
-	 * Generates a NOT LIKE portion of the query. Separates
-	 * multiple calls with OR
-	 *
-	 * @param	mixed
-	 * @param	mixed
-	 * @return	object
-	 */
-	public function or_not_like($field, $match = '', $side = 'both')
-	{
-		return $this->_like($field, $match, 'OR ', $side, 'NOT');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Like
-	 *
-	 * Called by like() or orlike()
-	 *
-	 * @param	mixed
-	 * @param	mixed
-	 * @param	string
-	 * @return	object
-	 */
-	protected function _like($field, $match = '', $type = 'AND ', $side = 'both', $not = '')
-	{
-		$type = $this->_group_get_type($type);
-
-		if ( ! is_array($field))
-		{
-			$field = array($field => $match);
-		}
-
-		foreach ($field as $k => $v)
-		{
-			$k = $this->_protect_identifiers($k);
-			$prefix = (count($this->ar_like) === 0) ? '' : $type;
-			$v = $this->escape_like_str($v);
-
-			if ($side === 'none')
-			{
-				$like_statement = $prefix." $k $not LIKE '{$v}'";
-			}
-			elseif ($side === 'before')
-			{
-				$like_statement = $prefix." $k $not LIKE '%{$v}'";
-			}
-			elseif ($side === 'after')
-			{
-				$like_statement = $prefix." $k $not LIKE '{$v}%'";
-			}
-			else
-			{
-				$like_statement = $prefix." $k $not LIKE '%{$v}%'";
-			}
-
-			// some platforms require an escape sequence definition for LIKE wildcards
-			if ($this->_like_escape_str != '')
-			{
-				$like_statement = $like_statement.sprintf($this->_like_escape_str, $this->_like_escape_chr);
-			}
-
-			$this->ar_like[] = $like_statement;
-			if ($this->ar_caching === TRUE)
-			{
-				$this->ar_cache_like[] = $like_statement;
-				$this->ar_cache_exists[] = 'like';
-			}
-
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Starts a query group.
-	 *
-	 * @param	string (Internal use only)
-	 * @param	string (Internal use only)
-	 * @return	object
-	 */
-	public function group_start($not = '', $type = 'AND ')
-	{
-		$type = $this->_group_get_type($type);
-		$this->ar_where_group_started = TRUE;
-		$prefix = (count($this->ar_where) === 0 AND count($this->ar_cache_where) === 0) ? '' : $type;
-		$this->ar_where[] = $value = $prefix.$not.str_repeat(' ', ++$this->ar_where_group_count).' (';
-
-		if ($this->ar_caching)
-		{
-			$this->ar_cache_where[] = $value;
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Starts a query group, but ORs the group
-	 *
-	 * @return	object
-	 */
-	public function or_group_start()
-	{
-		return $this->group_start('', 'OR ');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Starts a query group, but NOTs the group
-	 *
-	 * @return	object
-	 */
-	public function not_group_start()
-	{
-		return $this->group_start('NOT ', 'AND ');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Starts a query group, but OR NOTs the group
-	 *
-	 * @return	object
-	 */
-	public function or_not_group_start()
-	{
-		return $this->group_start('NOT ', 'OR ');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Ends a query group
-	 *
-	 * @return	object
-	 */
-	public function group_end()
-	{
-		$this->ar_where_group_started = FALSE;
-		$this->ar_where[] = $value = str_repeat(' ', $this->ar_where_group_count--) . ')';
-
-		if ($this->ar_caching)
-		{
-			$this->ar_cache_where[] = $value;
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Group_get_type
-	 *
-	 * Called by group_start(), _like(), _where() and _where_in()
-	 *
-	 * @param	string
-	 * @return	string
-	 */
-	protected function _group_get_type($type)
-	{
-		if ($this->ar_where_group_started)
-		{
-			$type = '';
-			$this->ar_where_group_started = FALSE;
-		}
-
-		return $type;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * GROUP BY
-	 *
-	 * @param	string
-	 * @return	object
-	 */
-	public function group_by($by)
-	{
-		if (is_string($by))
-		{
-			$by = explode(',', $by);
-		}
-
-		foreach ($by as $val)
-		{
-			$val = trim($val);
-
-			if ($val != '')
-			{
-				$this->ar_groupby[] = $val = $this->_protect_identifiers($val);
-
-				if ($this->ar_caching === TRUE)
-				{
-					$this->ar_cache_groupby[] = $val;
-					$this->ar_cache_exists[] = 'groupby';
-				}
-			}
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Sets the HAVING value
-	 *
-	 * Separates multiple calls with AND
-	 *
-	 * @param	string
-	 * @param	string
-	 * @return	object
-	 */
-	public function having($key, $value = '', $escape = TRUE)
-	{
-		return $this->_having($key, $value, 'AND ', $escape);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Sets the OR HAVING value
-	 *
-	 * Separates multiple calls with OR
-	 *
-	 * @param	string
-	 * @param	string
-	 * @return	object
-	 */
-	public function or_having($key, $value = '', $escape = TRUE)
-	{
-		return $this->_having($key, $value, 'OR ', $escape);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Sets the HAVING values
-	 *
-	 * Called by having() or or_having()
-	 *
-	 * @param	string
-	 * @param	string
-	 * @return	object
-	 */
-	protected function _having($key, $value = '', $type = 'AND ', $escape = TRUE)
-	{
-		if ( ! is_array($key))
-		{
-			$key = array($key => $value);
-		}
-
-		foreach ($key as $k => $v)
-		{
-			$prefix = (count($this->ar_having) === 0) ? '' : $type;
-
-			if ($escape === TRUE)
-			{
-				$k = $this->_protect_identifiers($k);
-			}
-
-			if ( ! $this->_has_operator($k))
-			{
-				$k .= ' = ';
-			}
-
-			if ($v != '')
-			{
-				$v = ' '.$this->escape($v);
-			}
-
-			$this->ar_having[] = $prefix.$k.$v;
-			if ($this->ar_caching === TRUE)
-			{
-				$this->ar_cache_having[] = $prefix.$k.$v;
-				$this->ar_cache_exists[] = 'having';
-			}
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Sets the ORDER BY value
-	 *
-	 * @param	string
-	 * @param	string	direction: asc or desc
-	 * @param	bool	enable field name escaping
-	 * @return	object
-	 */
-	public function order_by($orderby, $direction = '', $escape = TRUE)
-	{
-		if (strtolower($direction) === 'random')
-		{
-			$orderby = ''; // Random results want or don't need a field name
-			$direction = $this->_random_keyword;
-		}
-		elseif (trim($direction) != '')
-		{
-			$direction = (in_array(strtoupper(trim($direction)), array('ASC', 'DESC'), TRUE)) ? ' '.$direction : ' ASC';
-		}
-
-
-		if ((strpos($orderby, ',') !== FALSE) && $escape === TRUE)
-		{
-			$temp = array();
-			foreach (explode(',', $orderby) as $part)
-			{
-				$part = trim($part);
-				if ( ! in_array($part, $this->ar_aliased_tables))
-				{
-					$part = $this->_protect_identifiers(trim($part));
-				}
-
-				$temp[] = $part;
-			}
-
-			$orderby = implode(', ', $temp);
-		}
-		elseif ($direction != $this->_random_keyword)
-		{
-			if ($escape === TRUE)
-			{
-				$orderby = $this->_protect_identifiers($orderby);
-			}
-		}
-
-		$this->ar_orderby[] = $orderby_statement = $orderby.$direction;
-
-		if ($this->ar_caching === TRUE)
-		{
-			$this->ar_cache_orderby[] = $orderby_statement;
-			$this->ar_cache_exists[] = 'orderby';
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Sets the LIMIT value
-	 *
-	 * @param	integer	the limit value
-	 * @param	integer	the offset value
-	 * @return	object
-	 */
-	public function limit($value, $offset = NULL)
-	{
-		$this->ar_limit = (int) $value;
-
-		if ( ! is_null($offset))
-		{
-			$this->ar_offset = (int) $offset;
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Sets the OFFSET value
-	 *
-	 * @param	integer	the offset value
-	 * @return	object
-	 */
-	public function offset($offset)
-	{
-		$this->ar_offset = (int) $offset;
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * The "set" function.  Allows key/value pairs to be set for inserting or updating
-	 *
-	 * @param	mixed
-	 * @param	string
-	 * @param	boolean
-	 * @return	object
-	 */
-	public function set($key, $value = '', $escape = TRUE)
-	{
-		$key = $this->_object_to_array($key);
-
-		if ( ! is_array($key))
-		{
-			$key = array($key => $value);
-		}
-
-		foreach ($key as $k => $v)
-		{
-			if ($escape === FALSE)
-			{
-				$this->ar_set[$this->_protect_identifiers($k)] = $v;
-			}
-			else
-			{
-				$this->ar_set[$this->_protect_identifiers($k, FALSE, TRUE)] = $this->escape($v);
-			}
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Get SELECT query string
-	 *
-	 * Compiles a SELECT query string and returns the sql.
-	 *
-	 * @access	public
-	 * @param	string	the table name to select from (optional)
-	 * @param	boolean	TRUE: resets AR values; FALSE: leave AR vaules alone
-	 * @return	string
-	 */
-	public function get_compiled_select($table = '', $reset = TRUE)
-	{
-		if ($table != '')
-		{
-			$this->_track_aliases($table);
-			$this->from($table);
-		}
-
-		$select =  $this->_compile_select();
-
-		if ($reset === TRUE)
-		{
-			$this->_reset_select();
-		}
-
-		return $select;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Get
-	 *
-	 * Compiles the select statement based on the other functions called
-	 * and runs the query
-	 *
-	 * @param	string	the table
-	 * @param	string	the limit clause
-	 * @param	string	the offset clause
-	 * @return	object
-	 */
-	public function get($table = '', $limit = null, $offset = null)
-	{
-		if ($table != '')
-		{
-			$this->_track_aliases($table);
-			$this->from($table);
-		}
-
-		if ( ! is_null($limit))
-		{
-			$this->limit($limit, $offset);
-		}
-
-		$result = $this->query($this->_compile_select());
-		$this->_reset_select();
-		return $result;
-	}
-
-	/**
-	 * "Count All Results" query
-	 *
-	 * Generates a platform-specific query string that counts all records
-	 * returned by an Active Record query.
-	 *
-	 * @param	string
-	 * @return	string
-	 */
-	public function count_all_results($table = '')
-	{
-		if ($table != '')
-		{
-			$this->_track_aliases($table);
-			$this->from($table);
-		}
-
-		$result = $this->query($this->_compile_select($this->_count_string.$this->_protect_identifiers('numrows')));
-		$this->_reset_select();
-
-		if ($result->num_rows() === 0)
-		{
-			return 0;
-		}
-
-		$row = $result->row();
-		return (int) $row->numrows;
-	}
-	// --------------------------------------------------------------------
-
-	/**
-	 * Get_Where
-	 *
-	 * Allows the where clause, limit and offset to be added directly
-	 *
-	 * @param	string	the where clause
-	 * @param	string	the limit clause
-	 * @param	string	the offset clause
-	 * @return	object
-	 */
-	public function get_where($table = '', $where = null, $limit = null, $offset = null)
-	{
-		if ($table != '')
-		{
-			$this->from($table);
-		}
-
-		if ( ! is_null($where))
-		{
-			$this->where($where);
-		}
-
-		if ( ! is_null($limit))
-		{
-			$this->limit($limit, $offset);
-		}
-
-		$result = $this->query($this->_compile_select());
-		$this->_reset_select();
-		return $result;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Insert_Batch
-	 *
-	 * Compiles batch insert strings and runs the queries
-	 *
-	 * @param	string	the table to retrieve the results from
-	 * @param	array	an associative array of insert values
-	 * @return	object
-	 */
-	public function insert_batch($table = '', $set = NULL)
-	{
-		if ( ! is_null($set))
-		{
-			$this->set_insert_batch($set);
-		}
-
-		if (count($this->ar_set) === 0)
-		{
-			if ($this->db_debug)
-			{
-				// No valid data array. Folds in cases where keys and values did not match up
-				return $this->display_error('db_must_use_set');
-			}
-			return FALSE;
-		}
-
-		if ($table == '')
-		{
-			if ( ! isset($this->ar_from[0]))
-			{
-				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
-			}
-
-			$table = $this->ar_from[0];
-		}
-
-		// Batch this baby
-		for ($i = 0, $total = count($this->ar_set); $i < $total; $i += 100)
-		{
-			$this->query($this->_insert_batch($this->_protect_identifiers($table, TRUE, NULL, FALSE), $this->ar_keys, array_slice($this->ar_set, $i, 100)));
-		}
-
-		$this->_reset_write();
-		return TRUE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * The "set_insert_batch" function.  Allows key/value pairs to be set for batch inserts
-	 *
-	 * @param	mixed
-	 * @param	string
-	 * @param	boolean
-	 * @return	object
-	 */
-	public function set_insert_batch($key, $value = '', $escape = TRUE)
-	{
-		$key = $this->_object_to_array_batch($key);
-
-		if ( ! is_array($key))
-		{
-			$key = array($key => $value);
-		}
-
-		$keys = array_keys(current($key));
-		sort($keys);
-
-		foreach ($key as $row)
-		{
-			if (count(array_diff($keys, array_keys($row))) > 0 OR count(array_diff(array_keys($row), $keys)) > 0)
-			{
-				// batch function above returns an error on an empty array
-				$this->ar_set[] = array();
-				return;
-			}
-
-			ksort($row); // puts $row in the same order as our keys
-
-			if ($escape === FALSE)
-			{
-				$this->ar_set[] =  '('.implode(',', $row).')';
-			}
-			else
-			{
-				$clean = array();
-				foreach ($row as $value)
-				{
-					$clean[] = $this->escape($value);
-				}
-
-				$this->ar_set[] =  '('.implode(',', $clean).')';
-			}
-		}
-
-		foreach ($keys as $k)
-		{
-			$this->ar_keys[] = $this->_protect_identifiers($k);
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Get INSERT query string
-	 *
-	 * Compiles an insert query and returns the sql
-	 *
-	 * @access	public
-	 * @param	string	the table to insert into
-	 * @param	boolean	TRUE: reset AR values; FALSE: leave AR values alone
-	 * @return	string
-	 */
-	public function get_compiled_insert($table = '', $reset = TRUE)
-	{
-		if ($this->_validate_insert($table) === FALSE)
-		{
-			return FALSE;
-		}
-
-		$sql = $this->_insert(
-			$this->_protect_identifiers(
-				$this->ar_from[0], TRUE, NULL, FALSE
-			),
-			array_keys($this->ar_set),
-			array_values($this->ar_set)
-		);
-
-		if ($reset === TRUE)
-		{
-			$this->_reset_write();
-		}
-
-		return $sql;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Insert
-	 *
-	 * Compiles an insert string and runs the query
-	 *
-	 * @access	public
-	 * @param	string	the table to insert data into
-	 * @param	array	an associative array of insert values
-	 * @return	object
-	 */
-	public function insert($table = '', $set = NULL)
-	{
-		if ( ! is_null($set))
-		{
-			$this->set($set);
-		}
-
-		if ($this->_validate_insert($table) === FALSE)
-		{
-			return FALSE;
-		}
-
-		$sql = $this->_insert(
-			$this->_protect_identifiers(
-				$this->ar_from[0], TRUE, NULL, FALSE
-			),
-			array_keys($this->ar_set),
-			array_values($this->ar_set)
-		);
-
-		$this->_reset_write();
-		return $this->query($sql);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Validate Insert
-	 *
-	 * This method is used by both insert() and get_compiled_insert() to
-	 * validate that the there data is actually being set and that table
-	 * has been chosen to be inserted into.
-	 *
-	 * @access	public
-	 * @param	string	the table to insert data into
-	 * @return	string
-	 */
-	protected function _validate_insert($table = '')
-	{
-		if (count($this->ar_set) === 0)
-		{
-			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
-		}
-
-		if ($table == '')
-		{
-			if ( ! isset($this->ar_from[0]))
-			{
-				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
-			}
-		}
-		else
-		{
-			$this->ar_from[0] = $table;
-		}
-
-		return TRUE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Replace
-	 *
-	 * Compiles an replace into string and runs the query
-	 *
-	 * @param	string	the table to replace data into
-	 * @param	array	an associative array of insert values
-	 * @return	object
-	 */
-	public function replace($table = '', $set = NULL)
-	{
-		if ( ! is_null($set))
-		{
-			$this->set($set);
-		}
-
-		if (count($this->ar_set) === 0)
-		{
-			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
-		}
-
-		if ($table == '')
-		{
-			if ( ! isset($this->ar_from[0]))
-			{
-				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
-			}
-
-			$table = $this->ar_from[0];
-		}
-
-		$sql = $this->_replace($this->_protect_identifiers($table, TRUE, NULL, FALSE), array_keys($this->ar_set), array_values($this->ar_set));
-		$this->_reset_write();
-		return $this->query($sql);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Get UPDATE query string
-	 *
-	 * Compiles an update query and returns the sql
-	 *
-	 * @access	public
-	 * @param	string	the table to update
-	 * @param	boolean	TRUE: reset AR values; FALSE: leave AR values alone
-	 * @return	string
-	 */
-	public function get_compiled_update($table = '', $reset = TRUE)
-	{
-		// Combine any cached components with the current statements
-		$this->_merge_cache();
-
-		if ($this->_validate_update($table) === FALSE)
-		{
-			return FALSE;
-		}
-
-		$sql = $this->_update($this->_protect_identifiers($this->ar_from[0], TRUE, NULL, FALSE), $this->ar_set, $this->ar_where, $this->ar_orderby, $this->ar_limit);
-
-		if ($reset === TRUE)
-		{
-			$this->_reset_write();
-		}
-
-		return $sql;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Update
-	 *
-	 * Compiles an update string and runs the query
-	 *
-	 * @param	string	the table to retrieve the results from
-	 * @param	array	an associative array of update values
-	 * @param	mixed	the where clause
-	 * @return	object
-	 */
-	public function update($table = '', $set = NULL, $where = NULL, $limit = NULL)
-	{
-		// Combine any cached components with the current statements
-		$this->_merge_cache();
-
-		if ( ! is_null($set))
-		{
-			$this->set($set);
-		}
-
-		if ($this->_validate_update($table) === FALSE)
-		{
-			return FALSE;
-		}
-
-		if ($where != NULL)
-		{
-			$this->where($where);
-		}
-
-		if ($limit != NULL)
-		{
-			$this->limit($limit);
-		}
-
-		$sql = $this->_update($this->_protect_identifiers($this->ar_from[0], TRUE, NULL, FALSE), $this->ar_set, $this->ar_where, $this->ar_orderby, $this->ar_limit, $this->ar_like);
-		$this->_reset_write();
-		return $this->query($sql);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Validate Update
-	 *
-	 * This method is used by both update() and get_compiled_update() to
-	 * validate that data is actually being set and that a table has been
-	 * chosen to be update.
-	 *
-	 * @access	public
-	 * @param	string	the table to update data on
-	 * @return	bool
-	 */
-	protected function _validate_update($table = '')
-	{
-		if (count($this->ar_set) == 0)
-		{
-			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
-		}
-
-		if ($table == '')
-		{
-			if ( ! isset($this->ar_from[0]))
-			{
-				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
-			}
-		}
-		else
-		{
-			$this->ar_from[0] = $table;
-		}
-
-		return TRUE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Update_Batch
-	 *
-	 * Compiles an update string and runs the query
-	 *
-	 * @param	string	the table to retrieve the results from
-	 * @param	array	an associative array of update values
-	 * @param	string	the where key
-	 * @return	bool
-	 */
-	public function update_batch($table = '', $set = NULL, $index = NULL)
-	{
-		// Combine any cached components with the current statements
-		$this->_merge_cache();
-
-		if (is_null($index))
-		{
-			return ($this->db_debug) ? $this->display_error('db_must_use_index') : FALSE;
-		}
-
-		if ( ! is_null($set))
-		{
-			$this->set_update_batch($set, $index);
-		}
-
-		if (count($this->ar_set) === 0)
-		{
-			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
-		}
-
-		if ($table == '')
-		{
-			if ( ! isset($this->ar_from[0]))
-			{
-				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
-			}
-
-			$table = $this->ar_from[0];
-		}
-
-		// Batch this baby
-		for ($i = 0, $total = count($this->ar_set); $i < $total; $i += 100)
-		{
-			$this->query($this->_update_batch($this->_protect_identifiers($table, TRUE, NULL, FALSE), array_slice($this->ar_set, $i, 100), $this->_protect_identifiers($index), $this->ar_where));
-		}
-
-		$this->_reset_write();
-		return TRUE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * The "set_update_batch" function.  Allows key/value pairs to be set for batch updating
-	 *
-	 * @param	array
-	 * @param	string
-	 * @param	boolean
-	 * @return	object
-	 */
-	public function set_update_batch($key, $index = '', $escape = TRUE)
-	{
-		$key = $this->_object_to_array_batch($key);
-
-		if ( ! is_array($key))
-		{
-			// @todo error
-		}
-
-		foreach ($key as $k => $v)
-		{
-			$index_set = FALSE;
-			$clean = array();
-			foreach ($v as $k2 => $v2)
-			{
-				if ($k2 == $index)
-				{
-					$index_set = TRUE;
-				}
-				else
-				{
-					$not[] = $k.'-'.$v;
-				}
-
-				$clean[$this->_protect_identifiers($k2)] = ($escape === FALSE) ? $v2 : $this->escape($v2);
-			}
-
-			if ($index_set == FALSE)
-			{
-				return $this->display_error('db_batch_missing_index');
-			}
-
-			$this->ar_set[] = $clean;
-		}
-
-		return $this;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Empty Table
-	 *
-	 * Compiles a delete string and runs "DELETE FROM table"
-	 *
-	 * @param	string	the table to empty
-	 * @return	object
-	 */
-	public function empty_table($table = '')
-	{
-		if ($table == '')
-		{
-			if ( ! isset($this->ar_from[0]))
-			{
-				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
-			}
-
-			$table = $this->ar_from[0];
-		}
-		else
-		{
-			$table = $this->_protect_identifiers($table, TRUE, NULL, FALSE);
-		}
-
-		$sql = $this->_delete($table);
-		$this->_reset_write();
-		return $this->query($sql);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Truncate
-	 *
-	 * Compiles a truncate string and runs the query
-	 * If the database does not support the truncate() command
-	 * This function maps to "DELETE FROM table"
-	 *
-	 * @param	string	the table to truncate
-	 * @return	object
-	 */
-	public function truncate($table = '')
-	{
-		if ($table == '')
-		{
-			if ( ! isset($this->ar_from[0]))
-			{
-				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
-			}
-
-			$table = $this->ar_from[0];
-		}
-		else
-		{
-			$table = $this->_protect_identifiers($table, TRUE, NULL, FALSE);
-		}
-
-		$sql = $this->_truncate($table);
-		$this->_reset_write();
-		return $this->query($sql);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Get DELETE query string
-	 *
-	 * Compiles a delete query string and returns the sql
-	 *
-	 * @access	public
-	 * @param	string	the table to delete from
-	 * @param	boolean	TRUE: reset AR values; FALSE: leave AR values alone
-	 * @return	string
-	 */
-	public function get_compiled_delete($table = '', $reset = TRUE)
-	{
-		$this->return_delete_sql = TRUE;
-		$sql = $this->delete($table, '', NULL, $reset);
-		$this->return_delete_sql = FALSE;
-		return $sql;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Delete
-	 *
-	 * Compiles a delete string and runs the query
-	 *
-	 * @param	mixed	the table(s) to delete from. String or array
-	 * @param	mixed	the where clause
-	 * @param	mixed	the limit clause
-	 * @param	boolean
-	 * @return	object
-	 */
-	public function delete($table = '', $where = '', $limit = NULL, $reset_data = TRUE)
-	{
-		// Combine any cached components with the current statements
-		$this->_merge_cache();
-
-		if ($table == '')
-		{
-			if ( ! isset($this->ar_from[0]))
-			{
-				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
-			}
-
-			$table = $this->ar_from[0];
-		}
-		elseif (is_array($table))
-		{
-			foreach ($table as $single_table)
-			{
-				$this->delete($single_table, $where, $limit, FALSE);
-			}
-
-			$this->_reset_write();
-			return;
-		}
-		else
-		{
-			$table = $this->_protect_identifiers($table, TRUE, NULL, FALSE);
-		}
-
-		if ($where != '')
-		{
-			$this->where($where);
-		}
-
-		if ($limit != NULL)
-		{
-			$this->limit($limit);
-		}
-
-		if (count($this->ar_where) === 0 && count($this->ar_wherein) === 0 && count($this->ar_like) === 0)
-		{
-			return ($this->db_debug) ? $this->display_error('db_del_must_use_where') : FALSE;
-		}
-
-		$sql = $this->_delete($table, $this->ar_where, $this->ar_like, $this->ar_limit);
-		if ($reset_data)
-		{
-			$this->_reset_write();
-		}
-
-		return ($this->return_delete_sql === TRUE) ? $sql : $this->query($sql);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * DB Prefix
-	 *
-	 * Prepends a database prefix if one exists in configuration
-	 *
-	 * @param	string	the table
-	 * @return	string
-	 */
-	public function dbprefix($table = '')
-	{
-		if ($table == '')
-		{
-			$this->display_error('db_table_name_required');
-		}
-
-		return $this->dbprefix.$table;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Set DB Prefix
-	 *
-	 * Set's the DB Prefix to something new without needing to reconnect
-	 *
-	 * @param	string	the prefix
-	 * @return	string
-	 */
-	public function set_dbprefix($prefix = '')
-	{
-		return $this->dbprefix = $prefix;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Track Aliases
-	 *
-	 * Used to track SQL statements written with aliased tables.
-	 *
-	 * @param	string	The table to inspect
-	 * @return	string
-	 */
-	protected function _track_aliases($table)
-	{
-		if (is_array($table))
-		{
-			foreach ($table as $t)
-			{
-				$this->_track_aliases($t);
-			}
-			return;
-		}
-
-		// Does the string contain a comma?  If so, we need to separate
-		// the string into discreet statements
-		if (strpos($table, ',') !== FALSE)
-		{
-			return $this->_track_aliases(explode(',', $table));
-		}
-
-		// if a table alias is used we can recognize it by a space
-		if (strpos($table, ' ') !== FALSE)
-		{
-			// if the alias is written with the AS keyword, remove it
-			$table = preg_replace('/ AS /i', ' ', $table);
-
-			// Grab the alias
-			$table = trim(strrchr($table, ' '));
-
-			// Store the alias, if it doesn't already exist
-			if ( ! in_array($table, $this->ar_aliased_tables))
-			{
-				$this->ar_aliased_tables[] = $table;
-			}
-		}
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Compile the SELECT statement
-	 *
-	 * Generates a query string based on which functions were used.
-	 * Should not be called directly.  The get() function calls it.
-	 *
-	 * @return	string
-	 */
-	protected function _compile_select($select_override = FALSE)
-	{
-		// Combine any cached components with the current statements
-		$this->_merge_cache();
-
-		// Write the "select" portion of the query
-		if ($select_override !== FALSE)
-		{
-			$sql = $select_override;
-		}
-		else
-		{
-			$sql = ( ! $this->ar_distinct) ? 'SELECT ' : 'SELECT DISTINCT ';
-
-			if (count($this->ar_select) === 0)
-			{
-				$sql .= '*';
-			}
-			else
-			{
-				// Cycle through the "select" portion of the query and prep each column name.
-				// The reason we protect identifiers here rather then in the select() function
-				// is because until the user calls the from() function we don't know if there are aliases
-				foreach ($this->ar_select as $key => $val)
-				{
-					$no_escape = isset($this->ar_no_escape[$key]) ? $this->ar_no_escape[$key] : NULL;
-					$this->ar_select[$key] = $this->_protect_identifiers($val, FALSE, $no_escape);
-				}
-
-				$sql .= implode(', ', $this->ar_select);
-			}
-		}
-
-		// Write the "FROM" portion of the query
-		if (count($this->ar_from) > 0)
-		{
-			$sql .= "\nFROM ".$this->_from_tables($this->ar_from);
-		}
-
-		// Write the "JOIN" portion of the query
-		if (count($this->ar_join) > 0)
-		{
-			$sql .= "\n".implode("\n", $this->ar_join);
-		}
-
-		// Write the "WHERE" portion of the query
-		if (count($this->ar_where) > 0 OR count($this->ar_like) > 0)
-		{
-			$sql .= "\nWHERE ";
-		}
-
-		$sql .= implode("\n", $this->ar_where);
-
-		// Write the "LIKE" portion of the query
-		if (count($this->ar_like) > 0)
-		{
-			if (count($this->ar_where) > 0)
-			{
-				$sql .= "\nAND ";
-			}
-
-			$sql .= implode("\n", $this->ar_like);
-		}
-
-		// Write the "GROUP BY" portion of the query
-		if (count($this->ar_groupby) > 0)
-		{
-			$sql .= "\nGROUP BY ".implode(', ', $this->ar_groupby);
-		}
-
-		// Write the "HAVING" portion of the query
-		if (count($this->ar_having) > 0)
-		{
-			$sql .= "\nHAVING ".implode("\n", $this->ar_having);
-		}
-
-		// Write the "ORDER BY" portion of the query
-		if (count($this->ar_orderby) > 0)
-		{
-			$sql .= "\nORDER BY ".implode(', ', $this->ar_orderby);
-			if ($this->ar_order !== FALSE)
-			{
-				$sql .= ($this->ar_order == 'desc') ? ' DESC' : ' ASC';
-			}
-		}
-
-		// Write the "LIMIT" portion of the query
-		if (is_numeric($this->ar_limit))
-		{
-			return $this->_limit($sql."\n", $this->ar_limit, $this->ar_offset);
-		}
-
-		return $sql;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Object to Array
-	 *
-	 * Takes an object as input and converts the class variables to array key/vals
-	 *
-	 * @param	object
-	 * @return	array
-	 */
-	public function _object_to_array($object)
-	{
-		if ( ! is_object($object))
-		{
-			return $object;
-		}
-
-		$array = array();
-		foreach (get_object_vars($object) as $key => $val)
-		{
-			// There are some built in keys we need to ignore for this conversion
-			if ( ! is_object($val) && ! is_array($val) && $key != '_parent_name')
-			{
-				$array[$key] = $val;
-			}
-		}
-
-		return $array;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Object to Array
-	 *
-	 * Takes an object as input and converts the class variables to array key/vals
-	 *
-	 * @param	object
-	 * @return	array
-	 */
-	public function _object_to_array_batch($object)
-	{
-		if ( ! is_object($object))
-		{
-			return $object;
-		}
-
-		$array = array();
-		$out = get_object_vars($object);
-		$fields = array_keys($out);
-
-		foreach ($fields as $val)
-		{
-			// There are some built in keys we need to ignore for this conversion
-			if ($val !== '_parent_name')
-			{
-				$i = 0;
-				foreach ($out[$val] as $data)
-				{
-					$array[$i++][$val] = $data;
-				}
-			}
-		}
-
-		return $array;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Start Cache
-	 *
-	 * Starts AR caching
-	 *
-	 * @return	void
-	 */
-	public function start_cache()
-	{
-		$this->ar_caching = TRUE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Stop Cache
-	 *
-	 * Stops AR caching
-	 *
-	 * @return	void
-	 */
-	public function stop_cache()
-	{
-		$this->ar_caching = FALSE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Flush Cache
-	 *
-	 * Empties the AR cache
-	 *
-	 * @access	public
-	 * @return	void
-	 */
-	public function flush_cache()
-	{
-		$this->_reset_run(array(
-			'ar_cache_select'		=> array(),
-			'ar_cache_from'			=> array(),
-			'ar_cache_join'			=> array(),
-			'ar_cache_where'		=> array(),
-			'ar_cache_like'			=> array(),
-			'ar_cache_groupby'		=> array(),
-			'ar_cache_having'		=> array(),
-			'ar_cache_orderby'		=> array(),
-			'ar_cache_set'			=> array(),
-			'ar_cache_exists'		=> array(),
-			'ar_cache_no_escape'	=> array()
-		));
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Merge Cache
-	 *
-	 * When called, this function merges any cached AR arrays with
-	 * locally called ones.
-	 *
-	 * @return	void
-	 */
-	protected function _merge_cache()
-	{
-		if (count($this->ar_cache_exists) === 0)
-		{
-			return;
-		}
-
-		foreach ($this->ar_cache_exists as $val)
-		{
-			$ar_variable	= 'ar_'.$val;
-			$ar_cache_var	= 'ar_cache_'.$val;
-
-			if (count($this->$ar_cache_var) === 0)
-			{
-				continue;
-			}
-
-			$this->$ar_variable = array_unique(array_merge($this->$ar_cache_var, $this->$ar_variable));
-		}
-
-		// If we are "protecting identifiers" we need to examine the "from"
-		// portion of the query to determine if there are any aliases
-		if ($this->_protect_identifiers === TRUE AND count($this->ar_cache_from) > 0)
-		{
-			$this->_track_aliases($this->ar_from);
-		}
-
-		$this->ar_no_escape = $this->ar_cache_no_escape;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Reset Active Record values.
-	 *
-	 * Publicly-visible method to reset the AR values.
-	 *
-	 * @return	void
-	 */
-	public function reset_query()
-	{
-		$this->_reset_select();
-		$this->_reset_write();
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Resets the active record values.  Called by the get() function
-	 *
-	 * @param	array	An array of fields to reset
-	 * @return	void
-	 */
-	protected function _reset_run($ar_reset_items)
-	{
-		foreach ($ar_reset_items as $item => $default_value)
-		{
-			if ( ! in_array($item, $this->ar_store_array))
-			{
-				$this->$item = $default_value;
-			}
-		}
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Resets the active record values.  Called by the get() function
-	 *
-	 * @return	void
-	 */
-	protected function _reset_select()
-	{
-		$this->_reset_run(array(
-					'ar_select'		=> array(),
-					'ar_from'		=> array(),
-					'ar_join'		=> array(),
-					'ar_where'		=> array(),
-					'ar_like'		=> array(),
-					'ar_groupby'		=> array(),
-					'ar_having'		=> array(),
-					'ar_orderby'		=> array(),
-					'ar_wherein'		=> array(),
-					'ar_aliased_tables'	=> array(),
-					'ar_no_escape'		=> array(),
-					'ar_distinct'		=> FALSE,
-					'ar_limit'		=> FALSE,
-					'ar_offset'		=> FALSE,
-					'ar_order'		=> FALSE
-					)
-				);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Resets the active record "write" values.
-	 *
-	 * Called by the insert() update() insert_batch() update_batch() and delete() functions
-	 *
-	 * @return	void
-	 */
-	protected function _reset_write()
-	{
-		$this->_reset_run(array(
-					'ar_set'	=> array(),
-					'ar_from'	=> array(),
-					'ar_where'	=> array(),
-					'ar_like'	=> array(),
-					'ar_orderby'	=> array(),
-					'ar_keys'	=> array(),
-					'ar_limit'	=> FALSE,
-					'ar_order'	=> FALSE
-					)
-				);
-	}
-
-}
-
-/* End of file DB_active_rec.php */
-/* Location: ./system/database/DB_active_rec.php */