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
try
			{
				if ( handle != null )
					handle.close( );
			}
			catch ( Exception err )
			{
			}
		}
	}
	/**
	 * Parse report object and get the parameter default values
	 * 
	 * @param design
	 *            IViewerReportDesignHandle
	 * @param paramName
	 *            String
	 * @param options
	 *            InputOptionsF
	 * 
	 * @return String
	 */
	protected String getParameterDefaultValues(
			IViewerReportDesignHandle design, String paramName,
			InputOptions options ) throws ReportServiceException
	{
		if ( design == null )
			return null;
		String defalutValue = null;