/**
* Returns an instance of the Database.
*
* @return Database
*/
public static function getDatabaseInstance()
{
if (is_null(self::$db)) {
self::$db = Database::getInstance();
}
return self::$db;
}
/**
* Executes the built query.
*
* @return \Queryer\Driver\DatabaseDriverResult
*/
public function execute()
{
// Is someone mocking us? Well... that's not very nice!
if (!is_null(self::$mocker)) {
return self::$mocker->execute($this->options);
}
// Otherwise we'll hit up the driver.
return Database::getInstance()->execute($this->options);
}
/**
* Tests to ensure that a database exception is thrown when the engine doesn't exist.
*/
public function testGetInstanceException()
{
$engineName = 'DoesNotExist';
$this->setExpectedException('\\Queryer\\Exception\\DatabaseException', sprintf('The database driver %s was not found (attempted to autoload "%s").', htmlspecialchars(ucfirst(strtolower($engineName))), htmlspecialchars(Database::getDriverClassName($engineName))), DatabaseException::DRIVER_NOT_FOUND);
// Tell it to use a nonexistent engine.
Database::setEngineName($engineName);
// Then it should throw an Exception.
Database::getInstance();
}
