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
IReportItemQuery itemQuery = ExtensionManager.getInstance( )
					.createQueryItem( tagName );
			IDataQueryDefinition[] queries = null;
			IDataQueryDefinition parentQuery = (IDataQueryDefinition) value;
			if ( itemQuery != null )
			{
				try
				{
					itemQuery.setModelObject( handle );
					itemQuery.setQueryContext( queryContext );
					queries = itemQuery.createReportQueries( parentQuery );
				}
				catch ( BirtException ex )
				{
					context.addException( handle, ex );
				}
				if ( queries != null )
				{
					if ( queries.length > 0 )
					{
						IDataQueryDefinition query = queries[0];
						if ( query instanceof IBaseQueryDefinition )
						{
							try
							{
								transformExpressions( item,
										(IBaseQueryDefinition) query, null );
							}
							catch ( BirtException ex )
							{