Products that use eXo JCR, sometimes missuse it since they continue to use a session that has been closed through a method call on a node, a property or even the session itself. To prevent bad practices we propose three modes which are the folllowing:
If the system property exo.jcr.prohibit.closed.session.usage has been set to true, then a RepositoryException will be thrown any time an application will try to access to a closed session. In the stack trace, you will be able to know the call stack that closes the session.
If the system property exo.jcr.prohibit.closed.session.usage has not been set and the system property exo.product.developing has been set to true, then a warning will be logged in the log file with the full stack trace in order to help identifying the root cause of the issue. In the stack trace, you will be able to know the call stack that closes the session.
If none of the previous system properties have been set, then we will ignore that the issue and let the application use the closed session as it was possible before without doing anything in order to allow applications to migrate step by step.