Bug 173582 Run servlet should not be affected by values in document.[0000]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
request, ParameterAccessor.PARAM_REPORT_DOCUMENT );
		boolean isReportExist = ParameterAccessor.isReportParameterExist(
				request, ParameterAccessor.PARAM_REPORT );
		
		if ( isDocumentExist && !isReportExist )
		{
			
			boolean isValidDocument = ParameterAccessor
					.isValidFilePath( this.reportDocumentName );
			if ( isValidDocument )
			{
				
				reportDocumentInstance = ReportEngineService.getInstance( )
						.openReportDocument( this.reportDesignName,
								this.reportDocumentName, this.moduleOptions );
				if ( reportDocumentInstance != null )
				{
					reportRunnable = reportDocumentInstance.getReportRunnable( );
				}
				else
				{
					throw new ViewerException(
							ResourceConstants.GENERAL_EXCEPTION_DOCUMENT_FILE_ERROR,
							new String[]{this.reportDocumentName} );
				}
			}
			else
			{
				throw new ViewerException(
						ResourceConstants.GENERAL_EXCEPTION_DOCUMENT_ACCESS_ERROR,