public void setTypeAsString(String value) {
		value = value.toLowerCase();

		if (value.equals("buch")) {
			type = Type.book;
		}
		else if (value.equals("dvd")) {
			type = Type.dvd;
		}
		else if (value.equals("musik_cd")) {
			type = Type.music;
		}
		else {
			type = Type.valueOf(value);
		}
	}