Bug 212478 Exception occurs when preview the table including a Autotext
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/ReportQueryBuilder.java
{
					ComputedColumnHandle binding = (ComputedColumnHandle) iter
							.next( );
					try
					{
						addColumBinding( query, binding );
					}
					catch ( BirtException ex )
					{
						context.addException( designHandle, ex );
					}
				}
			}
			addSortAndFilter( item, query );
			return query;
		}
		/**
		 * An item needs query when it satisfies following conditions:
		 * <li>Has column bindings.
		 * <li>Is a table or a list.
		 * <li>Has hightlight rules and doesn't have parent query.
		 * 
		 * @param item
		 *            the item.
		 * @return true if it needs query.
		 */
		private boolean needQuery( ReportItemDesign item,
				IBaseQueryDefinition query )
		{
			DesignElementHandle handle = item.getHandle( );