In Relation To

In this post I’ll show you how easy it is to use the latest and greatest version of Hibernate ORM with WildFly 10.

Traditionally, updating Hibernate in WildFly required some good knowledge of the server’s module system and the structure of the ORM modules. It certainly was doable, but it involved search/replace in existing module descriptors and generally wasn’t very convenient.

This has become much simpler with last week’s release of Hibernate ORM 5.2.1!

We now provide a ZIP archive containing all the required modules, making it a breeze to add the latest version of Hibernate to an existing WildFly instance. And what’s best: the version of Hibernate packaged with the application server remains untouched; switching between this and the new version is just a matter of setting one small configuration option, and you can go back at any time.

Unless you’ve been living under a rock for the last months and years, you’ve probably heard about the efforts for adding a module system to the Java platform, code-named "Project Jigsaw".

Defining a module system and modularizing a huge system like the JDK is by no means a trivial task, so it’s not by surprise that the advent of Jigsaw has been delayed several times. But I think by now it’s a rather safe bet to expect Jigsaw to be released as part of JDK 9 eventually (the exact release date remains to be defined), especially since it became part of the early access builds a while ago.

This means that if you are an author of a library or framework, you should grab the latest JDK preview build and make sure your lib can be used a) on Java 9 and b) within modularized applications using Jigsaw.

One of the things library developers often miss in Java are property literals. In this post I’m going to show how to make creative use of Java 8 method references to emulate property literals, with the help of some byte code generation.

Akin to class literals (e.g. Customer.class), property literals would allow to refer to the properties of a bean class in a type-safe manner. This would be useful for designing APIs that run actions on specific bean properties or apply some means of configuration to them. E.g. consider the API for programmatic configuration of index mappings in Hibernate Search:

During my talk at VoxxedVienna on using Hibernate Search with Elasticsearch earlier this week, there was an interesting question which I couldn’t answer right away:

"When running a full-text query with a projection of fields, is it possible to return the result as a list of POJOs rather than as a list of arrays of Object?"

The answer is: Yes, it is possible, result transformers are the right tool for this.

It’s my pleasure to announce the release of Hibernate Validator 5.2.4.Final!

This is a rather small bugfix release which addresses two nasty issues around one of the more advanced features of Bean Validation, redefined default group sequences.

Please refer to the issues themselves (HV-1055, HV-1057) for all the details.

It’s my pleasure to announce the release of Hibernate Validator 5.2.3.Final!

Wait, didn’t we already do another Hibernate Validator release earlier this month? That’s right, indeed we pushed out the first Alpha of the 5.3 family a couple of days ago. And normally, that’d mean that there would be no further releases of earlier version families.

But in this case we decided to do an exception from the rule as we noticed that Hibernate Validator couldn’t be used with Java 9 (check out issue HV-1048 if you are interested in the details). As we don’t want to keep integrators and users of Hibernate Validator from testing their own software on Java 9, we decided to fix that issue on the current stable release line (in fact we strongly encourage you to test your applications on Java 9 to learn as early as possible about any potential changes you might need to make).

While we were at it, we backported some further bugfixes from 5.3 to 5.2, amongst them one for ensuring compatability with the Google App Engine. As always, you can find the complete list of fixes in the changelog.

It’s my pleasure to announce the first release of Hibernate Validator 5.3!

The overarching idea for the 5.3 timeline is to prototype several features which may potentially be standardized in the Bean Validation 2.0 specification. For instance we’ll work on a solution for the long-standing request for sorting the constraints on single properties.

If you’d like to see any specific features addressed in that prototyping work (and eventually included in BV 2.0), then please get in touch and let us know which are the most important things you are missing from the spec. We’ve compiled a first list of issues we are considering for inclusion in BV 2.0. For sure we cannot address all of them, so it’ll greatly help if you tell us what would be most helpful to you.

I am happy to announce the availability of Hibernate Validator 5.2.2.Final.

This release fixes several bugs, including a nasty regression around private property declarations in inheritance hierarchies and a tricky issue related to classloading in environments such as OSGi.

We also closed a gap in the API for constraint declaration which allows to ignore annotation-based constraints for specific methods, parameters etc.:

"Order, ooorder!" - Sometimes not only the honourable members of the House of Commons need to be called to order, but also the results of Hibernate Search queries need to be ordered in a specific way.

To do so, just pass a Sort object to your full-text query before executing it, specifying the field(s) to sort on:

It’s my pleasure to announce the first Alpha release of Hibernate OGM 5!

This release is based on Hibernate ORM 5.0 Final which we released just last week. The update should be smooth in general, but you should be prepared for some changes if you are bootstrapping Hibernate OGM manually through the Hibernate API and not via JPA. If you are using Hibernate OGM on WildFly, you need to adapt your application to the changed module/slot name of the Hibernate OGM core module which has changed from org.hibernate:ogm to org.hibernate.ogm:main.

Check out the Hibernate OGM migration notes to learn more about migrating from earlier versions of Hibernate OGM to 5.x. Also the Hibernate ORM migration guide is a recommended read.