Query/drivers/odbc.php

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2012-03-15 09:25:18 -04:00
<?php
/**
* Query
*
* Free Query Builder / Database Abstraction Layer
*
* @author Timothy J. Warren
* @copyright Copyright (c) 2012
* @link https://github.com/aviat4ion/Query
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
/**
* ODBC Database Driver
*
* For general database access for databases not specified by the main drivers
*
* @extends DB_PDO
*/
class ODBC extends DB_PDO {
public function __construct($dsn, $username=null, $password=null, $options=array())
{
parent::__construct("odbc:$dsn", $username, $password, $options);
$class = __CLASS__.'_sql';
$this->sql = new $class;
}
// --------------------------------------------------------------------------
/**
* List tables for the current database
*
* @return mixed
*/
public function get_tables()
{
//Not possible reliably with this driver
return FALSE;
}
// --------------------------------------------------------------------------
/**
* List system tables for the current database/connection
*
* @return array
*/
public function get_system_tables()
{
//No way of determining for ODBC
return array();
}
// --------------------------------------------------------------------------
/**
* Empty the current database
*
* @return void
*/
public function truncate($table)
{
$sql = "DELETE FROM {$table}";
$this->query($sql);
}
// --------------------------------------------------------------------------
/**
* Return the number of rows returned for a SELECT query
*
* @return int
*/
public function num_rows()
{
// TODO: Implement
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's structure
*
* @return string
*/
public function backup_structure()
{
// Not applicable to ODBC
return '';
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's data
*
* @return string
*/
public function backup_data()
{
// Not applicable to ODBC
return '';
}
}
// End of odbc.php