There are both commonalities and some differences when comparing architectural principles and coding styles in Akka Actors and Java EE 7 Enterprise JavaBeans, specifically stateless session beans and JMS message-driven beans, Dr Gerald Loeffler concludes in a recent introductory talk when explaining and comparing the three approaches from a high-level concurrency view.
JBoss Developer Framework is a central documentation resource for JBoss related technologies. The emphasis is on showing a developer how to use the whole software stack at all layers (e.g. user interface and persistence layer) in a single place. It contains Maven quickstarts, tutorials, migration documentation and other resources related to web development for the JBoss Application Server.
Last month, the committers of the Apache Beehive project voted to retire the project due to inactivity. The last release of Apache Beehive was version 1.0.2, which was released in December 2006. In the announcement posted on Feb 10th, Henri Yandell suggested alternatives for the main components which were part of Beehive.
The latest version of Java Enterprise Edition (Java EE) offers several new features including dependency injection, bean validation and significant enhancements in EJB, Servlets, JSF, and JSP technologies. Java EE 6 version was released on Thursday. This article gives an overview of the new features in the latest release.
The latest release of OpenEJB, an open source lightweight EJB 3.0 implementation framework, supports EJB 3.1 Singletons, Constructor Injection and integration with Spring framework. Apache OpenEJB development team announced last week the release of version 3.1 of the framework.
The latest version of OpenEJB, an open source lightweight EJB implementation framework, supports Dependency Injection of Enums, Collections and Maps, OSGi, and EJB 3.0 specification. OpenEJB 3.0 final released recently, also supports @EJB references to local interfaces in other EAR files, Transaction Logging and EJBd over HTTP protocol.
The EJB 3.1 expert group recently released an early draft of the specification, containing some significant new features as well as a continued simplification of the EJB programming model.
In a recent blog post, Java EE 6 (JSR 316) specification co-lead Roberto Chinnici presented the two leading candidates for the Java EE 6 Web Profile, and asked for feedback from the community on which of the two options the JSR 316 Expert Group should move forward with. InfoQ took the opportunity to analyze each of the Web Profile options in greater detail.
Job listings comparisons on Indeed.com show Spring surpassing EJB. Using this observation, SpringSource CEO Rod Johnson, argues that EJB is becoming legacy and that the EJB3.0 spec is doing too little, too late to prevent this trend. Do these comparisons indeed reflect significant shifts in the choices companies are making in regards to their core components for Java enterprise development?
java.net is hosting an article written by Sharad Acharya titled "Java Persistence Framework: Which, When, and What?" that compares four popular persistence frameworks: CMP Entity EJBs, JPA, Hibernate, and TopLink. Acharya discusses each technology and summarizes his findings in a matrix.
In this talk from last year's QCon London, Linda DeMichiel, who has been leading the EJB spec since the 1.0 days, presents EJB3 with a focus on JPA. The talk covers key aspects of the Java Persistence API and its role in the development of EJB 3.0 apps, including use of the EntityManager API, persistence units and persistence contexts, queries, object/relational mapping, etc.
Many enterprise Java developers gained some experience with Enterprise JavaBeans and went on to choose technologies they deemed lighter-weight, because they felt that building a solution by hand or with a lighter-weight framework was easier and less time-consuming. With EJB 3.X, is it still true that a POJO-solution is simpler, more-comprehensible code? Adam Bien doesn't think so:
As part of the Eclipse 3.3 (Europa) release two months ago, Version 2.0 of the Eclipse Web Tools Platform (WTP) was released. InfoQ spoke with WTP co-lead Jess Garms to learn more about this release and about WTP in general.
Apache OpenJPA has been gaining momentum in the JEE world, having been adopted by BEA as the EJB3 JPA implementation in WebLogic Server 10 and in the most recent EJB3 Feature Pack for IBM WebSphere Application Server. OpenJPA started its life in BEA's Kodo product, whose code was donated to the ASF in 2006; the project just recently graduated from the Apache Incubator as well.
In the latest video interview, EJB 3 co-spec lead Mike Keith discusses the current state of EJB 3, including common praises and criticisms that have been received. He also talks about POJO support and how the spec has evolved towards dependency injection.