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<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* Code Igniter
*
* An open source application development framework for PHP 4.3.2 or newer
*
* @package CodeIgniter
* @author Rick Ellis
* @copyright Copyright (c) 2006, pMachine, Inc.
* @license http://www.codeignitor.com/user_guide/license.html
* @link http://www.codeigniter.com
* @since Version 1.0
* @filesource
*/
// INITIALIZE THE CLASS ---------------------------------------------------
$obj =& get_instance();
$obj->init_class('CI_DB_utility', 'dbutility');
// ------------------------------------------------------------------------
/**
* Database Utility Class
*
* @category Database
* @author Rick Ellis
* @link http://www.codeigniter.com/user_guide/database/
*/
class CI_DB_utility {
var $db;
/**
* Constructor
*
* Grabs the CI super object instance so we can access it.
*
*/
function CI_DB_utility()
{
// Assign the main database object to $this->db
$obj =& get_instance();
$this->db =& $obj->db;
log_message('debug', "Database Utility Class Initialized");
}
// --------------------------------------------------------------------
/**
* Create database
*
* @access public
* @param string the database name
* @return bool
*/
function create_database($db_name)
{
$sql = $this->_create_database($db_name);
if (is_bool($sql))
{
return $sql;
}
return $this->db->query($sql);
}
// --------------------------------------------------------------------
/**
* Drop database
*
* @access public
* @param string the database name
* @return bool
*/
function drop_database($db_name)
{
$sql = $this->_drop_database($db_name);
if (is_bool($sql))
{
return $sql;
}
return $this->db->query($sql);
}
// --------------------------------------------------------------------
/**
* List databases
*
* @access public
* @return bool
*/
function list_databases()
{
$query = $this->db->query($this->_list_database());
$dbs = array();
if ($query->num_rows() > 0)
{
foreach ($query->result_array() as $row)
{
$dbs[] = current($row);
}
}
return $dbs;
}
// --------------------------------------------------------------------
/**
* Returns an array of table names
*
* @access public
* @return array
*/
function list_tables()
{
if (FALSE === ($sql = $this->_list_tables()))
{
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsupported_function');
}
return FALSE;
}
$retval = array();
$query = $this->db->query($sql);
if ($query->num_rows() > 0)
{
foreach($query->result_array() as $row)
{
if (isset($row['TABLE_NAME']))
{
$retval[] = $row['TABLE_NAME'];
}
else
{
$retval[] = array_shift($row);
}
}
}
return $retval;
}
// --------------------------------------------------------------------
/**
* Determine if a particular table exists
* @access public
* @return boolean
*/
function table_exists($table_name)
{
return ( ! in_array($this->db->dbprefix.$table_name, $this->list_tables())) ? FALSE : TRUE;
}
// --------------------------------------------------------------------
/**
* Optimize Table
*
* @access public
* @param string the table name
* @return bool
*/
function optimize_table($table_name)
{
$sql = $this->_optimize_table($table_name);
if (is_bool($sql))
{
return $sql;
}
$query = $this->db->query($sql);
return current($query->result_array());
}
// --------------------------------------------------------------------
/**
* Optimize Database
*
* @access public
* @param string the table name
* @return bool
*/
function optimize_database()
{
$result = array();
foreach ($this->list_tables() as $table_name)
{
$sql = $this->_optimize_table($table_name);
if (is_bool($sql))
{
return $sql;
}
$query = $this->db->query($sql);
$res = current($query->result_array());
$key = str_replace($this->db->database.'.', '', current($res));
$keys = array_keys($res);
unset($res[$keys[0]]);
$result[$key] = $res;
}
return $result;
}
// --------------------------------------------------------------------
/**
* Optimize Table
*
* @access public
* @param string the table name
* @return bool
*/
function repair_table($table_name)
{
$sql = $this->_repair_table($table_name);
if (is_bool($sql))
{
return $sql;
}
$query = $this->db->query($sql);
return current($query->result_array());
}
// --------------------------------------------------------------------
/**
* Drop Table
*
* @access public
* @param string the table name
* @return bool
*/
function drop_table($table_name)
{
$sql = $this->_drop_table($table_name);
if (is_bool($sql))
{
return $sql;
}
return $this->db->query($sql);
}
}
?>
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