Performing user impersonation is a straightforward two-step process. First you must create a proxy user and execute your code in a PrivilegedAction. Get user via one of the standard methods.

Spring-injected Beans in JPA EntityListeners. In Database Encryption Using JPA Listeners. I discussed transparent encryption using a JPA EntityListener. There was one big problem. EJB3 can inject resources into an EntityListener.

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