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Geronimo includes a repository that holds Geronimo modules and third-party JARs, which is located in repository under the Geronimo installation directory, and has a strict internal structure, modeled after the module ID for the contents.
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Many entries in the repository are JAR files (regardless of the actual file extension). However, any entries for modules will actually be unpacked archives – directories laid out like the original archive was packaged. Even if a module is deployed as e.g. a WAR file or EAR file, it will be unpacked when it is installed into the repository.