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	Step 3: Add a Context Listener Class the EntityManagerFactory: public void contextDestroyed (ServletContextEvent e) { EntityManagerFactory emf ... the EntityManagerFactory and the database - when the application stops ( contextDestroyed
	Step 3: Add a Context Listener Class .getServletContext().setAttribute("emf", emf); } // Release the EntityManagerFactory: public void contextDestroyed ... - when the application stops ( contextDestroyed ). The next step is adding a servlet class that will manage the guestbook page.
	Replaying recorded requests... the contextDestroyed method of the ContextEventListener class. Is this wrong? ie: it gets calls ... about closing the PMF remains: Is it OK to close this only in the contextDestroyed method ... and not another copy. I think that closing the PMF in contextDestroyed of a servletContextListener
	Database is erased after deploying a new web application version ; contextDestroyed method should be invoked. On that example the listener is defined in a web.xml file (added ... of the exception. In contextInitialized and contextDestroyed if invoked automatically as
	JBoss 7 startup fails . contextDestroyed (GuestListener.java:20) [classes:] at org.apache.catalina.core.StandardContext.listenerStop
	Unexpected error when loading all entity instance . using a contextDestroyed listener ? During the last corruption did you have hot deployments (i.e

Step 3: Add a Context Listener Class