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
{
				for ( int i = 0; i < visibilities.count( ); i++ )
				{
					visibilities.getRule( i ).setExpression(
							(String) newExpressions.get( expressionIndex++ ) );
				}
			}
			Map namedExpressions = item.getNamedExpressions( );
			if ( namedExpressions != null )
			{
				Collection exprs = namedExpressions.entrySet( );
				Iterator exprIter = exprs.iterator( );
				Map.Entry entry = null;
				while ( exprIter.hasNext( ) )
				{
					entry = (Map.Entry) exprIter.next( );
					entry.setValue( (String) newExpressions
							.get( expressionIndex++ ) );
				}
			}
			ActionDesign action = item.getAction( );
			if ( action != null )
			{
				switch ( action.getActionType( ) )
				{
					case ActionDesign.ACTION_BOOKMARK :
						action.setBookmark( (String) newExpressions
								.get( expressionIndex++ ) );
						break;
					case ActionDesign.ACTION_DRILLTHROUGH :