Java Platform, Enterprise Edition (Java EE) 8 The Java EE Tutorial |
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A Resource Adapter Archive (RAR) file stores XML files, Java classes, and other objects for Java EE Connector Architecture (JCA) applications. A resource adapter can be deployed on any Java EE server, much like a Java EE application. A RAR file can be contained in an Enterprise Archive (EAR) file, or it can exist as a separate file.
The RAR file contains
A JAR file with the implementation classes of the resource adapter
An optional META-INF/
directory that can store an ra.xml
file
and/or an application server–specific deployment descriptor used for
configuration purposes
A RAR file can be deployed on the application server as a standalone component or as part of a larger application. In both cases, the adapter is available to all applications using a lookup procedure.
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