Bug 213973 [2.2.2]ClassCastException throws out when preview a table share crosstab
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/ReportQueryBuilder.java
{
			return createFilters( group.filtersIterator( ) );
		}
		/**
		 * create filter array given a ExtendedItemHandle
		 * 
		 * @param group
		 *            the GroupHandle
		 * @return filter array
		 */
		public ArrayList createFilters( ExtendedItemDesign extendedItem )
		{
			return createFilters( ( (ExtendedItemHandle) extendedItem
					.getHandle( ) ).filtersIterator( ) );
		}
		/**
		 * create one sort condition
		 * 
		 * @param handle
		 *            the SortKeyHandle
		 * @return the sort object
		 */
		private ISortDefinition createSort( SortKeyHandle handle )
		{
			SortDefinition sort = new SortDefinition( );
			sort.setExpression( handle.getKey( ) );
			sort.setSortDirection( handle.getDirection( ).equals(
					DesignChoiceConstants.SORT_DIRECTION_ASC ) ? 0 : 1 );
			return sort;
		}