Bug 162841 [regression]Drill-through link to document containing parameters failed in html and pdf
Description: Drill-through link to document containing parameters failed in html and pdf Steps to reproduce: 1. New a report with a report parameter, don't set default value for it. 2. Preview in Web Viewer, input parameter value and save the report document to c:\ 3. New another report, insert a label, set a drill through link on the label, link to the report document. 4. Preview in web viewer, html and pdf, click the link. Expected result: Link to target report. Actual result: In html, a dialog popped up and said "a runtime error has occurred" In pdf, a dialog popped up and said that report parameter has null value. In frameset servlet, both formats are ok. I found that if I set default value for the report parameter in target report, the issue will disappear.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
{
				
				if ( paramValueObj instanceof Date )
				{
					params.put( paramName, paramValueObj );
					continue;
				}
				try
				{
					
					String format = ParameterAccessor.getFormat( request,
							paramName );
					if ( format == null || format.length( ) <= 0 )
					{
						format = parameter.getPattern( );
					}
					paramValueObj = DataUtil.validate(
							parameter.getDataType( ), format, paramValueObj
									.toString( ), locale );
					params.put( paramName, paramValueObj );
				}
				catch ( ValidationValueException e )
				{
					
					if ( ParameterAccessor.SERVLET_PATH_PREVIEW
							.equalsIgnoreCase( request.getServletPath( ) ) )
					{
						this.exception = e;
						break;
					}