public class BirtEngine {

	private static IReportEngine birtEngine = null;


	private static final String reportLogDir = ...
	private static final String reportEngineHome = ... e.g. "C:/JBoss/server/default/ReportEngine"

	public static synchronized IReportEngine getBirtEngine() {
		if (birtEngine == null) {
			EngineConfig config = new EngineConfig();

			File f = new File(reportEngineHome);
			if (!f.exists()) {
				throw new IllegalStateException("ReportEngine not Found");
			}
			config.setEngineHome(reportEngineHome);
			config.setLogConfig(reportLogDir, java.util.logging.Level.ALL);
			try {
				Platform.startup(config);
			} catch (BirtException e) {
				log.error("Error", e);
			}
			IReportEngineFactory factory = (IReportEngineFactory) Platform
					.createFactoryObject(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY);
			birtEngine = factory.createReportEngine(config);
		}
		return birtEngine;

	}
}

public void executeBirtReport(String rptdesignName,
			Something something,
			String outputFileName) {

		try {
			// ActionForm birtActionForm = (BirtActionForm) form;
			engine = BirtEngine.getBirtEngine();
			IReportRunnable report = engine.openReportDesign(reportSrcDir
					+ rptdesignName);
			IRunAndRenderTask task = engine.createRunAndRenderTask(report);
			HashMap<String, Object> contextMap = new HashMap<String, Object>();
			contextMap.put("Something", someAttribute.toString());
...
		RenderOption options = new RenderOption();

			switch (myCqiReportFilterDefinition.getFormat()) {
			case PDF:
				...
				break;
			case HTML:
				options = new HTMLRenderOption();
				((HTMLRenderOption) options).setEmbeddable(true);
				((HTMLRenderOption) options).setEnableAgentStyleEngine(true);
				options.setSupportedImageFormats("JPG;PNG;BMP;SVG;GIF"); 

				options.setBaseURL("/somethings/");
				// Tell the Engine to prepend all images with this URL - Note
				// this requires using the HTMLServerImageHandler
				((HTMLRenderOption) options).setBaseImageURL("/reports/"
						+ outputFileName + "/");
				// Tell the Engine where to write the images to
				File f = new File(reportOutputDir + outputFileName + "/");
				f.mkdirs();
				((HTMLRenderOption) options).setImageDirectory(reportOutputDir
						+ outputFileName + "/");

				options.setOutputFileName(reportOutputDir + outputFileName
						+ ".html");
				options.setOutputFormat(HTMLRenderOption.OUTPUT_FORMAT_HTML);
           				
				HTMLCompleteImageHandler imageHandler = new HTMLCompleteImageHandler();
              			options.setImageHandler(imageHandler); 
				break;
			case XLS:
				...
				break;

			}
			task.setRenderOption(options);
			task.setLocale(LocaleSelector.instance().getLocale());
			task.run();
			task.close();

		} catch (Exception e) {
			log.error("executeBirtReport(): Error generating Birt-Report ", e);

		}
	}