Bug 141951 Export data throw NPE when target document doesn't exist
Description: Export data doesn't work when deploy birt in WebSphere6 Steps to reproduce: 1. Deploy birt in WebSphere6 2. Preview report and click Export Data Result: java.lang.NullPointerException Stack Trace: org.apache.axis.AxisFault.makeFault(AxisFault.java:101) org.eclipse.birt.report.soapengine.processor.AbstractBaseComponentProcessor.process(Unknown Source) org.eclipse.birt.report.soapengine.endpoint.BirtSoapBindingImpl.getUpdatedObjects(Unknown Source) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/BirtViewerReportService.java
queryName, columns );
			ret.add( exportedResultSet );
		}
		return ret;
	}
	/**
	 * Gets the report design name from the input options.
	 * 
	 * @param options
	 *            the input options
	 * @return the report design name if the request contains a valid name,
	 *         otherwise null
	 */
	private String getReportDesignName( InputOptions options )
	{
		String reportDesignName = null;
		if ( options != null )
		{
			HttpServletRequest request = (HttpServletRequest) options
					.getOption( InputOptions.OPT_REQUEST );
			if ( request != null )
			{
				ViewerAttributeBean attrBean = (ViewerAttributeBean) request
						.getAttribute( "attributeBean" ); 
				assert attrBean != null;
				reportDesignName = attrBean.getReportDesignName( );
				if ( reportDesignName != null )
				{