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Oracle Updates App Server, JDeveloper


Latest iterations called major steps toward completion of Fusion middleware

By Alex Handy
February 15, 2006 — 
During the last days of January, Oracle released updates to its Application Server, JDeveloper IDE, and TopLink persistence and transformation engine. Oracle categorized the updates as major steps toward completion of its Fusion middleware platform.

JDeveloper underwent a major overhaul of its interface and capabilities for the new version, including support for AJAX (Asynchronous JavaScript and XML) and the addition of more than 100 JavaServer Faces (JSF) components, which the company claims will ease application creation using off-the-shelf parts. Also included are more than 35 new refactorings, Enterprise JavaBeans (EJB) 3.0 support, and the ability to code UML and XML within the IDE.

JDeveloper has been streamlined for ease of use, with facilities for code assistance and support for Oracle ADF, the company’s application development framework.

Oracle Application Server 10g R3 also now supports EJB 3.0, and got a new version of the Oracle Container for Java (OC4J). The company also has released a stand-alone version of OC4J, version 10.1.3, which can be used outside of an Oracle environment under both Linux and Windows.

Oracle has integrated rules management facilities into 10g, including support for Oracle Business Rules, and the Oracle Enterprise Messaging Service.

JDeveloper and 10g R3 both use the model-view-controller model of application design. This means that each aspect of a program—the interface, back end and external interactions—can be modified and reworked independently of the rest of the application.

The MVC model has been widely adopted, including in experimental and open-source Web framework communities, such as the Ruby on Rails framework.

To accomplish this independence of interface, back end and external interactions, Oracle has used facilities provided by the Java community at large: JSF handles the view, Struts handles the controller, and EJB takes care of the model.

MAP OBJECTS TO XML
Oracle TopLink 10.1.3, the persistence and transformation engine for 10g, also has made the jump to EJB 3.0. A major new feature in TopLink is the ability to map existing Java objects to XML.

The mapping information is not stored within the Java classes or the XML schema, which according to the company gives developers the ability to quickly modify mapping information when classes and schema are changed.


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