Bug 155178 [Deploy] Preview report failed on war deployed weblogic server
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
this.reportDesignName = ParameterAccessor.getParameter(
								request, ParameterAccessor.PARAM_REPORT );
						InputStream is = request.getSession( )
								.getServletContext( ).getResourceAsStream(
										this.reportDesignName );
						reportRunnable = ReportEngineService.getInstance( )
								.openReportDesign( is,
										this.getModuleOptions( request ) );
					}
					else
					{
						this.exception = new ViewerException(
								ResourceConstants.GENERAL_EXCEPTION_REPORT_FILE_ERROR,
								new String[]{this.reportDesignName} );
					}
				}
				catch ( EngineException e )
				{
					this.exception = e;
				}
			}
		}
		if ( reportRunnable != null )
		{
			design = new BirtViewerReportDesignHandle(
					IViewerReportDesignHandle.RPT_RUNNABLE_OBJECT,
					reportRunnable );
		}
		return design;
	}