Bug 145970 [REGRESSION] Set format in parameter dialog will lose the orginal data set by user.
Reproduce: 1. New a report scalar parameter, "p1", in the initialize dialog, set format to be uppercase. 2. New a data set with query "select * from CLASSICMODELS.CUSTOMERS where CLASSICMODELS.CUSTOMERS.CONTACTFIRSTNAME = ?". And bind the data set parameter to the report parameter "p1". 3. Insert a table into layout view, drag column [CUSTOMERNUMBER], [CONTACTLASTNAME], [CONTACTFIRSTNAME] from Data Explorer into table detail row respectively. 4. Preview. In the pop-up parameter dialog, type "Eric". Press "ok". Actually result: There was no data displayed. Expected result: There is one record whose first name is "Eric" in database.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/actionhandler/BirtCacheParameterActionHandler.java
handle.saveAs( configFileName );
			handle.close( );
			handleUpdate( );
		}
		catch ( Exception e )
		{
			AxisFault fault = new AxisFault( e.getLocalizedMessage( ) );
			fault.setFaultCode( new QName(
					"BirtCacheParameterActionHandler.__execute( )" ) ); 
			fault.setFaultReason( e.getLocalizedMessage( ) );
			throw fault;
		}
	}
	protected void handleUpdate( )
	{
		Data data = new Data( );
		data.setConfirmation( "Parameter value saved." ); 
		UpdateData updateData = new UpdateData( );
		updateData.setTarget( "birtParameterDialog" ); 
		updateData.setData( data );
		Update update = new Update( );
		update.setUpdateData( updateData );
		response.setUpdate( new Update[]{update} );
	}
	protected IViewerReportService getReportService( )
	{
		return null;
	}
}