def getItemNames(fullname):
    """Split a fullname in the 3 parts that compose it

    Args:
        fullname(str): Fullname

    Returns:
        tuple with the names of each item in the hierarchy or None
        for the items that are not present
    """
    n = fullname.split(':')
    if len(n) == 1:
        return n[0], None, None
    if len(n) == 2:
        return n[0], n[1], None
    if len(n) == 3:
        return n[0], n[1], n[2]
    return None, None, None