Home on Adam Warski: programming articles & videos

I guess many people are often “unsatisfied” with how JSF works and how much time it sometimes takes to do a simple thing.

I just commited initial support for valid-time auditing in Envers, a feature that a lot of users has been (directly or indirectly) asking for.

If you are a .NET and NHibernate user, soon you’ll be able to use Envers in your project!

Using Scala’s implicits it’s possible to implement Object Services in a much more “user-friendly” way.

Rich domain models are certainly a nice, object-oriented idea, but I always had one problem with them: what if they become bloated with completely unrelated methods?

Hello, I’ve created a new cdiext project at github, initially with two extensions: Stackable Security Interceptors, about which I blogged here and here.

I’ll be speaking about the JSR-308 specification (annotations on java types), which will be part of Java 7, on the GeeCON conference, which will take place from the 13th till the 14th of May 2010 in Poznan, Poland.

In my previous post, I described how to create a simple security interceptor, which checks conditions defined using EL expressions, e.

Hibernate 3.5 was just released; congratulations to Steve and the whole team!

Waiting for the Seam3 security module, I wrote a simple security interceptor (inspired by the Seam2 security annotation).

JSF2 improves a lot both how navigation can be done (you can now return a view id from an action method, no need to describe every navigation case in faces-config.

I just created a new “Projects Using Envers” wikipage; so if you are using Envers in your project, make sure to add it to the list!

After quite a long break, I’m happy to announce a new release of Envers (available on the downloads page, or via Maven).

From time to time, in a system I develop, which uses EJB3 beans as the basic “component model”, I have a need to do some operations using a new entity manager (but still in the same transaction).

Recently I played a bit with compiler plugins for Scala.

In the new 0.2.2 release of the typestate checker (an extension to the JSR308 checkers framework), you can now specify a state, to which an object transits, if a method returns true or false using the afterTrue and afterFalse elements in state annotations.

If you’ll be in Warsaw this weekend, and if you speak polish, be sure not to miss Javarsovia, a one-day conference organized by the Warsaw JUG.

If you’ll be attending Jazoon next week, be sure not to miss the Envers presentation!

Yesterday I uploaded a new release of Envers, 1.2.1.GA.

The StaticAccess detector is a FindBugs plugin, which lets you verify that methods do not rely on static (global) state, that is, that they don’t read or write static variables which aren’t constant.

I’ve uploaded a new version (0.2) of the typestate checker (for an introduction, see this blog post), which contains bug fixes and much improved exception handling.

The recently released Envers 1.2.0.GA finally made it to the JBoss Maven repository; you can find it here:

Today Envers 1.2.0.GA has been released!

I’ve written a prototype JSR308 Checkers Maven2 plugin.

December came, so it’s time for Devoxx!

When dealing with mutable objects in Java, we quite often see that “states” of the class considered emerge.

I’m happy to announce that Envers is now a module of Hibernate!

The idea described here is originally by Tomek Szymański.

Today Envers 1.1.0.GA has been released.

If you’ll be visting Java Developers’ Day 2008 in Cracow, Poland on Thursday, be sure to stop by and see my presentation of Envers.

Today Envers 1.1.0.beta2 has been released.

Yesterday I came back from Herbstcampus 2008 in Nürnberg.

Hello, after a vacation break, Envers is back with a 1.1.0.beta1 release.

Today the first general availability version of Envers has been released (downloads, release notes).

With the recent addition of queries to Envers, it is now possible to easily retrieve data in a bi-temporal way.

So far Envers made it easy to store historical data; now, with version 1.0.0.beta1 (download here), you can also query it, in two “dimensions”: for entities at a given revision and for revisions, at which an entity changed.

Hello, I’ve posted a poll on what data should be stored in versions tables in Envers, see here and cast your vote:

With the preview 3 release of Envers, you can easily associate additional data with revisions.

The “let” tag enables you to bind the value of any expression to a variable and later reuse it, without recalculating the value.

You can now download a second preview version of the Envers library!

Hello, Envers is a project which enables you to version your entities, simply by annotating them with @Versioned!

Starting with Seam 2.0.1 (annoucement here, download here) you can fully use UrlRewriteFilter to make URLs in your Seam app nice and clean.

If you are developing anything with Facelets/Seam/… frameworks, you probably know the pain of having to redeploy after each .

Seam in combination with JBoss Tools already has the features I wrote about some time ago (see here), unless, for example, you aren’t using Eclipse or you want to develop with Seam 2, which isn’t supported by JBoss Tools yet.

While most of (web)applications communicate with the end user in English, a lot of them use native languages, which often have some special characters (not to look too far for an example, we have the Polish alphabet, with ą, ę, ś, etc).

Imagine you are developing a web application, which displays some JSP files.