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
{
				List expressions = new ArrayList( );
				expressions.add( expr );
				ITotalExprBindings totalExpressionBinding = null;;
				totalExpressionBinding = expressionUtil
						.prepareTotalExpressions( expressions, groupName );
				addNewColumnBindings( query, totalExpressionBinding );
				List newExpressions = totalExpressionBinding.getNewExpression( );
				return (String) newExpressions.get( 0 );
			}
			return expr;
		}
		/**
		 * Transfer the old visibility and hightlight expressions to column
		 * dataBinding and bind it to the Query. And create new visibility and
		 * hightlight expressions to replace the old.
		 */
		private void transformColumnExpressions( ColumnDesign column,
				IBaseQueryDefinition query, String groupName )
				throws BirtException
		{
			if ( query == null )
			{
				return;
			}
			List expressions = new ArrayList( );
			VisibilityDesign visibilities = column.getVisibility( );
			if ( visibilities != null )
			{