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CE 3.0 provides backward compatibility to Java EE 5 compliant applications. If you have applications running on Geronimo 2.x successfully, you can easily port them to Geronimo 3.0. However, there are a few updates you need to consider as followed.
To initialize a database using deployment plan file, org.apache.geronimo.connector.DatabaseInitializationGBean in 2.X should be changed to org.apache.geronimo.connector.wrapper.DatabaseInitializationGBean.
There are following changes regarding Java Mail configuration in Geronimo 3.0.
should be changed to
The following table lists the changes of some components name from Geronimo 2.x to 3.0.
|groupId||In 2.X||In 3.0|
In Servlet 3.0, an annotation @MultiPartConfig has been introduced to indicate that the servlet expects request of type multipart. You need to enable the feature in your deployment plan file as followed:
In Geronimo 3.0, resources are imported and exported using different elements in deployment plan.
If your EJB application is a standalone module, you need to export its package in the deployment plan file under name space of http://geronimo.apache.org/xml/ns/deployment-1.2. For example:
While for any modules which call the deployed EJB, you need to import the EJB package in the deployment plan using the same name space. For example:
If your web application refers to a standalone EJB module, you need to specify the artifact id of the EJB module in the deployment plan file of you web application. For example:
If an EAR application contains an application client module, an EJB module and web application module. If the application client refers to one of ejb interfaces using following code:
Although the ejb.jar is defined in its class-path using manifest.mf file, the EJB interface is not in its class path. You need to package the ejb module into the EAR using the following structure:
If you want to use shared libraries, make sure you specifies the value of baseDir attribute for gbean reference class. See Using shared libraries in your applications for more details.