InfoQ Homepage JPA Content on InfoQ
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Presentation: Linda DeMichiel on EJB 3 & JPA
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.
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Has JPA Killed the DAO?
Recent developer discussion has explored whether JPA has killed the DAO pattern. DAO supporters argue that it isn't going anywhere soon however.
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OpenJPA 1.0: Enterprise O/R Mapping with full JPA 1.0 compliance
Apache OpenJPA, an open-source implementation of the Java Persistence API (JPA), recently released version 1.0.0. InfoQ spoke with OpenJPA project lead Patrick Linskey to learn more about this release.
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JLINQ: Runtime JDBC Generator for Eclipse
Azadeh Ahadian of IBM has published an article introducing JLINQ on IBM's developerWorks site. Despite the name, JLINQ does not have much in common with Microsoft's LINQ, rather it is an Eclipse plugin providing integration with a database and runtime DAO code generation. The plugin is part of IBM's Developer Workbench that is coming with Viper, the next release of DB2.
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Apache Geronimo 2.0: Certified Java EE 5 compatible
Apache Geronimo, an open-source Java Enterprise Edition (Java EE) application server, recently released version 2.0.1. InfoQ took the opportunity to learn more about Apache Geronimo and where it fits into the application server space.
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Interview: OpenJPA & the JPA spec with Patrick Linskey
OpenJPA is an implementation of the Java Persistence API (JPA) which can be used as a stand-alone POJO persistence layer, or it can be integrated into any EJB3.0 compliant container and many lightweight frameworks. In this interview, Patrick Linskey explains where OpenJPA came from, how it fits into the O/R Mapping space, the JPA specification, and future plans for OpenJPA.
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Eclipse Web Tools Platform 2.0: Now with JPA and JSF tools
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.
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OpenJPA adopted by both IBM and BEA; becomes top-level Apache project
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.
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Oracle Contributes TopLink ORM Open Source to Eclipse
Oracle is contributing the commercial TopLink ORM open source to Eclipse. Going forward, all production features of TopLink will be available in EclipseLink and Oracle's commercially supported TopLink will only contain an additional thin proprietary integration code layer necessary for some Oracle AppServer and SOA Suite features. Oracle is also becoming an Eclipse Strategic Developer.
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Interview with Javier Paniza on OpenXava 2.1
OpenXava, the rapid-web application framework, recently released version 2.1. InfoQ sat down with Javier Paniza, project lead for OpenXava to discuss the framework and the new release, which brings JPA support.
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Interview: Mike Keith on EJB 3
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.
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WebLogic Server 10 Update: Java EE 5, Spring Pitchfork, WS-*
BEA has released a new tech preview of WebLogic Server 10 that passes the Java EE 5 CTS. WebLogic Server 10 uses the Kodo JPA (based on Apache OpenJPA)and also Spring's Pitchfork project to provide EJB and Java EE 5. WebLogic Server 10 adds side-by-side deployment of multi-version apps, JMS automatic failover, support for document-centric ws-standards, filtering class loaders, and more.
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Hibernate 3.2 Released with Java Persistence Provider Support
The Hibernate team has released Hibernate 3.2 GA. This release is ready for production use and includes final releases of the Java Persistence provider, Hibernate Annotations and Hibernate EntityManager. The Hibernate Java Persistence provider has been certified with the Sun TCK.
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BEA Announces WebLogic 9.2 Platform
BEA has announced the completion and delivery of WebLogic Platform 9.2 (Server, Portal, and Integration) that are designed to provide a unified foundation for BEA's SOA 360 platform. Kodo 4.1, Workshop, and Workshop Studio also had new releases. InfoQ summarized the new features in WL Server and Portal.
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Interview: Florent Benoit on the EasyBeans EJB3 Container and OSGi Support
The EasyBeans EJB3 container project recently announced support for deploying the container as a set of OSGi modules. InfoQ sat down with Florent Benoit of Bull R&D to discuss this new feature as well as how EasyBeans compares to other EJB3 implementations such as JBoss and Gernonimo.