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Note, this only works when using the LocalInitialContextFactory to embed OpenEJB into the vm. Once embedded, further configuration properties are ignored.
Containers can also be declared. The most useful is to declare a Stateful SessionBean container so that it's guaranteed to passivate and activate on each call to the bean, allowing you to test your callbacks behave as you need them to.
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See Containers and Resources for a full list of supported Resource types and their properties.