/**
* Constructs a new aggregate descriptor that contains the contents of the given single
* descriptor.
*
* @param D the descriptor
* @throws BadDataException from parent constructor
*/
public DescAggregate(DescSingle D) throws BadDataException {
super();
setName(D.getName());
attributes = new Attribute[D.attributes.length];
for (int i = 0; i < D.attributes.length; i++)
attributes[i] = (Attribute) D.attributes[i].clone();
span = (FrameSpan) D.span.clone();
idList = new TreeSet();
idList.add(new Integer(D.id));
setCategory(D.getCategory());
}
