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
}
				}
				catch ( EngineException e )
				{
					this.exception = e;
				}
			}
		}
		if ( reportRunnable != null )
		{
			design = new BirtViewerReportDesignHandle(
					IViewerReportDesignHandle.RPT_RUNNABLE_OBJECT,
					reportRunnable );
		}
		return design;
	}
	/**
	 * Determine the report design and doc 's timestamp
	 * 
	 * @param request
	 * @throws Exception
	 */
	protected void processReport( HttpServletRequest request ) throws Exception
	{
		File reportDocFile = new File( this.reportDocumentName );
		File reportDesignDocFile = new File( reportDesignName );
		if ( reportDesignDocFile != null && reportDesignDocFile.exists( )
				&& reportDesignDocFile.isFile( ) && reportDocFile != null
				&& reportDocFile.exists( ) && reportDocFile.isFile( )
				&& "get".equalsIgnoreCase( request.getMethod( ) ) )