Coming in Karaf 3.0.0: new enterprise JPA (OpenJPA, Hibernate) and CDI (OpenWebBeans, JBoss Weld) features

Apache Karaf 3.0.0 is now mostly ready (I’m just polishing the documentation).

In previous post, I introduced new enterprise features like JNDI, JDBC, JMS.

As I said, the purpose is to provide a full flexible enterprise ready container, easy to use and extend for the users.

Easy to use means that a simple command will extend your container, with feature that can help you a lot.

JPA

Previous Karaf version already provided a jpa feature. However, this feature “only” installs the Aries JPA bundles, allowing to expose the EntityManager as an OSGi service. It doesn’t install any JPA engine. It means that, previously, the users had to install all bundles required to have a persistence engine.

As very popular persistence engines, Karaf 3.0.0 provides two ready-to-use features:

karaf@root()> feature:install openjpa

The openjpa feature brings Apache OpenJPA in Apache Karaf.

karaf@root()> feature:install hibernate

The hibernate feature brings Hibernate in Apache Karaf.

CDI

Karaf 3.0.0 now refers Pax CDI. It means that you can install pax-cdi* features in Apache Karaf.

However, Pax-CDI doesn’t install any CDI container, it’s up to the users to install all bundles required to have a CDI container.

As very popular CDI containers, Karaf 3.0.0 provides two ready-to-use features:

karaf@root()> feature:repo-add pax-cdikaraf@root()> feature:install openwebbeans

The openwebbeans feature brings Apache OpenWebBeans CDI container in Apache Karaf.

karaf@root()> feature:repo-add pax-cdikaraf@root()> feature:install weld

The weld feature brings JBoss Weld CDI container in Apache Karaf.

EJB

As a reminder, waiting to have KarafEE back in Karaf directly (as a ejb feature, I plan to work on it next week), you can install Apache OpenEJB in Apache Karaf:

karaf@root()> feature:repo-add openejbkaraf@root()> feature:install openejb-corekaraf@root()> feature:install openejb-server

Comments

Post a Comment

Popular posts from this blog

Exposing Apache Karaf configurations with Apache Arrow Flight

Image
This blog post shows how to use Apache Arrow and Arrow Flight in Apache Karaf runtime. The code base is available here: https://github.com/jbonofre/karaf-arrow . Apache Arrow ? Apache Arrow is composed by: The Arrow format (specification). Format implementations with different languages (C, Java, Go, Rust, ...). Extra subprojects like Flight, Flight SQL, ADBC, nanoarrow, ... Apache Arrow format is a in-memory columnar format, super efficient for scanning and iterating a large chunks of data. In traditional memory buffer, we focus on "row". Apache Arrow format "groups" data per column, which is much more efficient on modern CPUs/GPUs. The Apache Arrow format is basically a specification. We have several implementations for this specification: C C++ C# Go Java Python Ruby Rust As the purpose of this blog post is to show Apache Arrow in Apache Karaf, we will use Arrow Java. In addition, Apache Arrow also provides several...
Read more

Getting started with Apache Karaf Minho

Image
Apache Karaf Minho Apache Karaf Minho is a new runtime, completely created from scratch. The objectives are: super easy to use and run ligtning fast, including GraalVM support Kubernetes compliant to be easily used on the cloud helping to optimize cloud costs by supporting applications colocation providing turnkey services allowing you to create Minho applications in a minute Minho is composed by: minho-boot is the core of Minho. It contains the runtime launcher and the core services (service registry, lifecycle service, configuration service, ...). minho-* services provided additional functionnalities in the runtime. You can use these services to create your own services, it's also where you will find the services managing sepcific kind of applications, allowing colocation. minho-tooling optionally provide convenient tools to create your own runtime. It includes minho-maven-plugin for instance. In this blog post, we will take a quick tour on A...
Read more

Using Apache Karaf with Kubernetes

Image
In a previous blog post ( http://blog.nanthrax.net/?p=893 ), I introduced the “new” docker support in Karaf and the use of Karaf static distribution. This post follows the previous one by illustrating how to use Karaf docker image with a Kubernetes cluster. Preparing Karaf static docker image As in the previous blog post, we are preparing a Karaf static distribution based docker image. For this blog post, I’m using the example provided in Karaf: https://github.com/apache/karaf/tree/master/examples/karaf-docker-example/karaf-docker-example-static-dist . I’m just building the distribution as usual: karaf-docker-example-static-dist$ mvn clean install Preparing kubernetes testing cluster For this blog, I’m using a minikube installed locally. The installation is pretty simple: Download minikube from https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 Rename minikube-linux-amd64 as minikube Copy minikube in your path, for instance /us...
Read more