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
ScalarParameterHandle parameter = (ScalarParameterHandle) findParameter( paramName );
						
						
						if ( paramValue != null && parameter != null )
						{
							try
							{
								Object paramValueObj = ParameterValidationUtil
										.validate( parameter.getDataType( ),
												parameter.getPattern( ),
												paramValue, ULocale.US );
								paramValue = ParameterValidationUtil
										.getDisplayValue( parameter
												.getDataType( ), parameter
												.getPattern( ), paramValueObj,
												locale );
							}
							catch ( Exception err )
							{
								paramValue = configVar.getValue( );
							}
							this.configMap.put( paramName, paramValue );
						}
					}
				}
				handle.close( );
			}
		}
		catch ( Exception e )
		{