vaadin-framework-example Vaadin production mode productionMode false FrameworkInitializer pt.ist.vaadinframework.servlets.FrameworkInitializer 1 Example com.vaadin.terminal.gwt.server.ApplicationServlet Vaadin application class to start application pt.ist.vaadinframework.example.ExampleApplication Example /* WithinTransactionFilter pt.ist.vaadinframework.servlets.filters.WithinTransactionFilter WithinTransactionFilter /*