Bug 141255 No error for the incompatible parameter value
Steps to reproduce: 1.New a decimal parameter, set the default value to "aaa" 2.Preview the report by "Preview" tab Expected result: Error to say the incompatible parameter value Actual result: Parameter request page keeps poping up till input the decimal value Note: if preview in Web Viewer, error will be thrown out, but no exception description.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
HttpServletRequest request )
	{
		IViewerReportDesignHandle design = null;
		IReportRunnable reportRunnable = null;
		IReportDocument reportDocumentInstance = ReportEngineService
				.getInstance( ).openReportDocument( this.reportDesignName,
						this.reportDocumentName );
		if ( reportDocumentInstance != null )
		{
			reportRunnable = reportDocumentInstance.getReportRunnable( );
			
			if ( IBirtConstants.SERVLET_PATH_FRAMESET.equalsIgnoreCase( request
					.getServletPath( ) ) )
			{
				this.parameterMap = reportDocumentInstance.getParameterValues( );
			}
			reportDocumentInstance.close( );
		}
		
		if ( reportRunnable == null )
		{
			try
			{
				reportRunnable = ReportEngineService.getInstance( )
						.openReportDesign( this.reportDesignName );
			}
			catch ( EngineException e )
			{
				this.exception = e;
			}