Revision 425073849 of "JOnAS" on enwiki

{{Infobox Software
| name                   =  JOnAS
| logo                   =
| screenshot             = [[Image:JonAS.png|220px]]
| caption                =
| developer              = [[OW2 Consortium]]
| latest release version = 5.2.0
| latest release date    = {{release date|2011|04|05}}
| latest preview version = 5.3 M1
| latest preview date    = {{release date|2011|04|07}}
| operating system       = [[Cross-platform]]
| programming language   = [[Java (programming language)|Java]]
| genre                  = [[Application server]]
| license                = [[GNU Lesser General Public License|LGPL]]
| website                = http://jonas.ow2.org/
}}
'''JOnAS''' is an open-source implementation of the [[Java EE]] [[application server]] specification, developed and hosted by the [[ObjectWeb]] consortium (ObjectWeb is a non-profit European consortium, founded by [[Institut National de Recherche en Informatique et en Automatique|INRIA]], [[Bull (company)|Groupe Bull]], and [[France Télécom]]).
JOnAS is released under the [[GNU Lesser General Public License|LGPL]] open-source license.

== Java EE Certification ==
JOnAS is [[Java EE]] 5 certified, as of March 17, 2009. It was the first open-source server certified for free, using a process known as "J2EE scholarship" and established by Sun for non-profit organizations{{Citation needed|date=June 2009}}. JOnAS is generally considered to be technologically superior<ref>[http://portal.acm.org/citation.cfm?id=583854.582443 Performance and scalability of EJB applications]</ref>{{Clarify|date=February 2011}}. The new JOnAS 5 architecture is based on top of an [[OSGi|OSGi framework]] which makes the development of dynamic component much easier than before{{Citation needed|date=June 2009}}.

== Management console ==
JOnAS has a comparatively clear remote management console, providing easily accessible tools for remote uploading and deploying of the web applications{{Citation needed|date=June 2009}}, configuring both secure and ordinary web access ports and managing the user name - password - role datasets. This console is based on the JavaScript{{Citation needed|date=June 2009}}. From the first impression, the consoles of the comparable open source Java EE servers seem more confusing, with many needed features not immediately visible{{Citation needed|date=June 2009}}. This is, however, more important in the teaching process, as Java EE servers are not meant to be managed by the unprepared end user{{Citation needed|date=June 2009}}.

== Java EE Environment ==
JOnAS is an open source Java EE 5 application server. It provides a fully compliant [[EJB]] container through [[EasyBeans]] and is available with an embedded [[Apache Tomcat|Tomcat]] or [[Jetty (web server)|Jetty]] web container. Any 1.5 or 1.6 JVM is supported, and the attempts to run on a free stack with [[GNU Classpath]] are very promising. JOnAS can run on numerous operating systems including Linux, Windows, AIX, many Posix platforms, and others, as long as a suitable JVM is available.

== OSGi Environment ==
As of its version 5, JOnAS is fully based on the [[OSGi|OSGi framework]]; using either [[Apache Felix]], [[Equinox OSGi|Eclipse Equinox]] or [[Knopflerfish]] (though the default JOnAS packaging comes with Apache Felix). This means that all JOnAS components are packaged as bundles, for example the full JOnAS profile comes with more than 250 bundles.

The service layer is implemented using [http://felix.apache.org/site/apache-felix-ipojo.html Apache iPOJO], therefore most Java-EE-certified JOnAS services (persistence, EJB, resources, ...) are directly available as OSGi services to all OSGi bundles deployed on JOnAS. The inverse is also true: for example, an EJB3 can directly access any number of OSGi services using dynamic injection.

== Note ==

<references/>

== See also ==
{{Portal|Free software}}
* [[Comparison of application servers]]
* [[EasyBeans]]

== External links ==
* [http://jonas.ow2.org JOnAS Project Web Site]
* [http://www.jroller.com/jonasteam/ JOnAS team blog]
* [http://scholar.alishomepage.com/Master/JOnAS_OSGi/Article.pdf An article describing how to deploy EJB3s and web services in JOnAS 4]

[[Category:Free server software]]
[[Category:Free software programmed in Java]]
[[Category:OW2 Consortium]]
[[Category:Java enterprise platform]]

[[de:JOnAS]]
[[es:JOnAS]]
[[fr:JOnAS]]
[[it:JOnAS]]
[[lt:JOnAS]]
[[ja:JOnAS]]