Here are a list of possible decorators to use to wrap a transaction.

 public interface Transaction{
	public void execute();
 }

 //Execute a list of transactions commands in one transaction
 public class TransactionList implements Transaction{
	private final List _list;
	public TransactionList(List trans){
	 _list= trans;
	}

	public void execute(){
	  Iterator iter = _list.iterator();
	  while(iter.hasNext()){
	    ((Transaction)iter.next()).execute();
	  }
	}
 }

--MikeRettig