/**
	 * Inserts a form document into database.
	 * 
	 * @param	PackageInstallationQueue	$queue
	 * @param	FormDocument			$document
	 */
	private static function insertForm(PackageInstallationQueue $queue, FormDocument $document) {
		$sql = "INSERT INTO	wcf".WCF_N."_package_installation_form
					(queueID, formName, document)
			VALUES		(?, ?, ?)";
		$statement = WCF::getDB()->prepareStatement($sql);
		$statement->execute(array(
			$queue->queueID,
			$document->getName(),
			base64_encode(serialize($document))
		));
	}