Bug 173836 NPE was thrown when click "Preview " button quickly twice[00]
NPE was thrown when click "Preview " button quickly twice[00] Build number: 2.2.0.v20070212-0630 Steps to reproduce: 1.open attached report 2.click "Preview" button quickly twice Expected result: Report can be previewed properly Actual result: NPE was thrown in second preview Error log: see screen shot
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/actionhandler/BirtGetPageActionHandler.java
if ( !file.exists( ) )
		{
			AxisFault fault = new AxisFault( );
			fault
					.setFaultReason( BirtResources
							.getMessage( ResourceConstants.ACTION_EXCEPTION_NO_REPORT_DOCUMENT ) );
			throw fault;
		}
		else
		{
			
			ViewerAttributeBean bean = (ViewerAttributeBean) context.getBean( );
			if ( bean.isDocumentProcessing( ) )
			{
				AxisFault fault = new AxisFault( );
				fault
						.setFaultReason( BirtResources
								.getMessage( ResourceConstants.GENERAL_EXCEPTION_DOCUMENT_FILE_PROCESSING ) );
				throw fault;
			}
		}
	}
	/**
	 * 
	 */
	public IViewerReportService getReportService( )
	{
		return BirtReportServiceFactory.getReportService( );
	}
}