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/context/ViewerAttributeBean.java
File file = new File( this.reportDesignName );
				if ( file.exists( ) )
				{
					reportRunnable = ReportEngineService.getInstance( )
							.openReportDesign( this.reportDesignName );
				}
				else
				{
					
					this.reportDesignName = ParameterAccessor.getParameter(
							request, ParameterAccessor.PARAM_REPORT );
					InputStream is = request.getSession( ).getServletContext( )
							.getResourceAsStream( this.reportDesignName );
					reportRunnable = ReportEngineService.getInstance( )
							.openReportDesign( is );
				}
			}
			catch ( EngineException e )
			{
				this.exception = e;
			}
		}
		if ( reportRunnable != null )
		{
			design = new BirtViewerReportDesignHandle(
					IViewerReportDesignHandle.RPT_RUNNABLE_OBJECT,
					reportRunnable );
		}
		else
		{