db = $db;
$this->db_tools = $db_tools;
$this->table_prefix = $table_prefix;
$this->phpbb_root_path = $phpbb_root_path;
$this->php_ext = $php_ext;
$this->errors = array();
}
/**
* Defines other migrationsto be applied first (abstract method)
*
* @return array An array of migration class names
*/
public function depends_on()
{
return array();
}
/**
* Updates the database schema by providing a set of change instructions
*
* @return array
*/
public function update_schema()
{
return array();
}
/**
* Updates data by returning a list of instructions to be executed
*
* @return array
*/
public function update_data()
{
}
/**
* Wrapper for running queries to generate user feedback on updates
*/
protected function sql_query($sql)
{
if (defined('DEBUG_EXTRA'))
{
echo "
\n{$sql}\n
";
}
$this->db->sql_return_on_error(true);
if ($sql === 'begin')
{
$result = $this->db->sql_transaction('begin');
}
else if ($sql === 'commit')
{
$result = $this->db->sql_transaction('commit');
}
else
{
$result = $this->db->sql_query($sql);
if ($this->db->sql_error_triggered)
{
$this->errors[] = array(
'sql' => $this->db->sql_error_sql,
'code' => $this->db->sql_error_returned,
);
}
}
$this->db->sql_return_on_error(false);
return $result;
}
}