sminnee / silverstripe-framework

	 * @param string $id    The object of the ID to retrieve

	 * @return DataObject

	 */

	public static function get_latest_version($class, $id) {

		$baseClass = ClassInfo::baseDataClass($class);

		$list = DataList::create($baseClass)

			->where("\"$baseClass\".\"RecordID\" = $id")

			->setDataQueryParam("Versioned.mode", "latest_versions");

		return $list->First();

	}

	/**

	 * Returns whether the current record is the latest one.

	 * @param int    $version The desired version of the object

	 * @return DataObject

	 */

	public static function get_version($class, $id, $version) {

		$baseClass = ClassInfo::baseDataClass($class);

		$list = DataList::create($baseClass)

			->where("\"$baseClass\".\"RecordID\" = $id")

			->where("\"$baseClass\".\"Version\" = " . (int)$version)

			->setDataQueryParam("Versioned.mode", 'all_versions');

		return $list->First();

	}

	/**

	 * Return a list of all versions for a given id.