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
for ( Iterator iter = parsedParameters.keySet( ).iterator( ); iter
				.hasNext( ); )
		{
			String paramName = iter.next( ).toString( );
			Object paramValue = parsedParameters.get( paramName );
			
			if ( paramValue == null
					&& !ParameterAccessor.isReportParameterExist( request,
							paramName )
					&& ( IBirtConstants.SERVLET_PATH_FRAMESET
							.equalsIgnoreCase( request.getServletPath( ) ) || ( this.configMap != null && !this.configMap
							.containsKey( paramName ) ) ) )
			{
				paramValue = this.getParameterDefaultValues(
						reportDesignHandle, paramName, options );
				parsedParameters.put( paramName, paramValue );
			}
		}
		return parsedParameters;
	}
	/**
	 * @return the parameter handle list
	 */
	private List getParameterList( ) throws ReportServiceException
	{
		IReportRunnable runnable = (IReportRunnable) this.reportDesignHandle
				.getDesignObject( );
		ModuleHandle model = null;
		if ( runnable != null )
			model = runnable.getDesignHandle( ).getModuleHandle( );