/**
* Ensures that a class is defined. If not, attempts to include the file
* using the provided path. If unable to locate the class, an IncludeException
* will be thrown. The path that will be used for include_once is
* $classpath . "/" . $classname . ".php"
*
* @param string name of class (ex Phreeze)
* @param string or array [optional] the relative path(s) where the file would be found
*/
public static function RequireClass($classname, $classpath = "")
{
if (class_exists($classname)) {
return true;
}
// normalize this as an array
$classpaths = is_array($classpath) ? $classpath : array($classpath);
$attempts = "";
foreach ($classpaths as $path) {
if (class_exists($classname)) {
break;
}
try {
// append a directory separater if necessary
if ($path && substr($path, -1) != "/") {
$path .= "/";
}
Includer::IncludeFile($path . $classname . ".php");
} catch (IncludeException $ex) {
$attempts .= " " . $ex->getMessage();
}
}
if (!class_exists($classname)) {
// the class still isn't defined so there was a problem including the model
throw new IncludeException("Unable to locate class '{$classname}': " . $attempts);
}
}
/**
* Load the data driver
* @throws Exception
*/
public function LoadDriver()
{
if ($this->_driver == null) {
require_once "verysimple/IO/Includer.php";
// the driver was not explicitly provided so we will try to create one from
// the connection setting based on the database types that we do know about
switch ($this->ConnectionSetting->Type) {
case "mysql":
include_once "verysimple/DB/DataDriver/MySQL.php";
$this->_driver = new DataDriverMySQL();
break;
case "mysqli":
include_once "verysimple/DB/DataDriver/MySQLi.php";
$this->_driver = new DataDriverMySQLi();
break;
case "sqlite":
include_once "verysimple/DB/DataDriver/SQLite.php";
$this->_driver = new DataDriverSQLite();
break;
default:
try {
Includer::IncludeFile("verysimple/DB/DataDriver/" . $this->ConnectionSetting->Type . ".php");
$classname = "DataDriver" . $this->ConnectionSetting->Type;
$this->_driver = new $classname();
} catch (IncludeException $ex) {
throw new Exception('Unknown DataDriver "' . $this->ConnectionSetting->Type . '" specified in connection settings');
}
break;
}
DataAdapter::$DRIVER_INSTANCE = $this->_driver;
}
}
