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There have been a number of improvements, enhancements and bug fixes in this release. Items listed in the later section are the most significant ones.
Geronimo v2.2 can be built on Java SE 6 and provide support to JAXB/JAX-WS version2 implementation, and its assemblies also supports Java 5 and 6 run-time environments.
By embedding Web Containers like Tomcat/Jetty and JMS Server Active MQ, users can have a better experience when working with them. For example, user can use /var/activemq/conf/activemq.xml to configure ActiveMQ and var/catalina/server.xml to configure Tomcat directly. Other than the new consuming approach of those embedded modules, Geronimo also provides backwards compatibility, which means you can configure GBeans like you did in previous versions.
In v2.2, new GShell commands are supported for remote GShell server management and server instance creation. See Geronimo GShell Commands for more details.
In Geronimo v2.2, we used Dojo 1.1.1 mini release instead of 0.4.3 legacy to reduce server footprint. And following console portlets are published as optional ones, user can enable them by installing plugins respectively.
Plugins are grouped by their function(category) in v2.2 and you can assemble a customized server more easily and quickly. A plugins group can be managed just as an individual plugin and you can also create your personal plugin profiles. see Customizing server assemblies and Plugins Group for the details.
The latest Geronimo Eclipse Plugin (GEP) provides compatibility support to previous versions of Geronimo server environment. The following new features and enhancements have been implemented in the latest GEP v2.2:
Server farm/cluster management with dynamic members and improved deployment for off-line/new member scenarios, see Plugin based Farming for the details.