Bug 168383 Non-exists svg image isn't processed as the normal image.[0001]
Description: Non-exists svg image isn't processed as the normal image. Build number:2.2.0.v20061216 Steps to reproduce: 1. Copy a svg image to resource folder. 2. New a report, insert an image and select the svg file, set alt-text as "not found". 3. Delete the svg file and preview the report in IE and Firefox. Expected result: Because the svg image doesn't exist, so alt-text should display Actual result: In IE, I saw a gray background, right click will see svg context menu. In Firefox, I saw error message as:org.eclipse.birt.report.service.api.ReportServiceException: Missing image file. Error log:N/A
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/presentation/aggregation/layout/EngineFragment.java
if ( mimeType != null && mimeType.length( ) > 0 )
				response.setContentType( mimeType );
			else
				response.setContentType( "application/octet-stream" ); 
		}
	}
	/**
	 * Render the report in html/pdf format by calling engine service.
	 * 
	 * @param request
	 *            incoming http request
	 * @param response
	 *            http response
	 * @exception ServletException
	 * @exception IOException
	 */
	protected void doService( HttpServletRequest request,
			HttpServletResponse response ) throws ServletException, IOException
	{
		ServletOutputStream out = response.getOutputStream( );
		GetUpdatedObjectsResponse upResponse = new GetUpdatedObjectsResponse( );
		IContext context = new BirtContext( request, response );
		Operation op = null;
		try
		{
			if ( IBirtConstants.SERVLET_PATH_DOWNLOAD.equalsIgnoreCase( request
					.getServletPath( ) ) )
			{
				BirtExtractDataActionHandler extractDataHandler = new BirtExtractDataActionHandler(
						context, op, upResponse );