All those architectures out there start as a simple consistent idea… and end in a mess. After too many change requests and refactoring tasks to improve your project or correct issues, there might be nothing much left of the architecture you once started with. In this post I will give an example on how to…
The first release candidate for Vaadin 10 has been unleashed and I have just started to migrate some of my Vaadin 7/8 projects to version 10. As I prefer a server side programming model for Vaadin projects, I did not have many problems with the server side. The client components as well as the layout and styles…
Vaadin 10 is an almost complete rewrite of the successfull Vaadin framework and offers many new interesting and usefull features. One interesting feature is the router, that will superseed the navigator of Vaadin 8. With the @Route annotation placed at the type definition of a view class, it is possible to use a template for…
Creating a multi lingual web application is a common task in modern web development. Most (old-school) java web frameworks offer out-of-the-box solutions for this task, but for single-page-application frameworks like Vaadin, you need to come up with some fresh ideas for localization. The business requirements for a Vaadin i18n application I would like to collect…
With version 8.3 of the Vaadin UI framework along with the official CDI addon for Vaadin, come a number of changes for CDI usage. Some enhancements were made for the CDI navigator and it is now possible to have nice readable and bookmarkable Urls in your vaadin application. I summed up the latest changes for…
Separating the business logic from application code has been a customer’s dream and one of the most important architecture goals for many IT development projects. However countless “if – else” statements in your java project tell another story. With a solid MVP architecture and the integration of a business rule engine, developers can separate the…
The Vaadin 8 framework uses the excellent Valo theme, which can be used out-of-the-box or as the base for a custom theme. The (old school) themes for Vaadin 7 (reindeer, runo and chameleon) are still usable with the vaadin-compability-themes.jar. During the last couple of weeks (June 2017) some interesting add-ons in the vaadin directory appeared…
The model-view-presenter (aka MVP) architecture pattern is a good choice for Vaadin applications. It clearly separates the business logic from the UI code and improves testability. Well… I heard statements like that many times before without proper explanations or examples what makes a pattern so useful that we cannot start a new project without using…
The MVP (model-view-presenter) is a solid architecture pattern for Vaadin projects of all sizes. However there are many ways to achieve it. I would like to have a MVP architecture in my Vaadin projects and use the cool features of the Vaadin framework and its eco-system like a WYSIWYG editor for UI layout or the…
Single page web applications have become more and more popular as they support responsiveness in an elegant way and create great user experiences with fast rendering times. Vaadin is a leading Java single page web application framework that has a large eco system with many official and 3rd party add-ons. One essential add-on is the…