The Caboteria / Tech Web / TechNotes > ProgrammingNotes > JavaNotes / GeronimoNotes (revision 8)
The Apache group's j2ee server is called Geronimo. Here are some notes.

The home page is http://geronimo.apache.org/ and there's a wiki at http://wiki.apache.org/geronimo/.

Concepts

GBean

Geronimo is modular; it consists of a kernel and a set of components that implement the features needed to implement the J2EE specification. GBean (short for "Geronimo Bean") is the kernel-component interface. There's no GBean interface per se, but each GBean has a corresponding GBeanInfo object that describes the GBean and tells the kernel how to interact with it. The source code for the GBeanTest class shows how a GBean is used.

GBeans are tracked using an MBeanServer (an MBean directory?).

Misc

Startup

Needs to be run from the target directory (classpaths are relative to that dir). Runs using a standalone application jar called server.jar. The startup class specified in MANIFEST.MF is o.a.g.system.main.Daemon. The Daemon is a command-line wrapper around o.a.g.kernel.Kernel.

Deployment

wiki page here: http://wiki.apache.org/geronimo/Deployment

j2ee xml descriptor files (and their geronimo counterparts) are marshalled into java classes using apache xmlbeans (http://xml.apache.org/xmlbeans).

http://nagoya.apache.org/jira/browse/GERONIMO-262 - NPE while deploying trivial RA

-- TobyCabot - 30 Jun 2004

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