About context listener

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JDO Doc
19

javax.jdo.listener.DeleteCallback

javax.jdo.listener Interface DeleteCallback Subinterfaces: InstanceCallbacks This interface is used to notify instances of delete events. Since: JDO 2.0 void jdoPreDelete() Called before the instance is deleted. Called before the instance is deleted. This method is called before the state
JDO Doc
19

javax.jdo.listener.DetachCallback

javax.jdo.listener Interface DetachCallback This interface is used to notify instances of detach events. Since: JDO 2.0 void jdoPostDetach(Object detached) This method is called during the execution of javax.jdo.PersistenceManager.detachCopy on the detached instance after the copy
Tutorial
17

Step 2: Define a JPA Entity Class

is adding a context listener class that will manage a JPA's EntityManagerFactory representing the ObjectDB database.
Manual
17

Database Server

.Server -conf my_objectdb.conf start The TPC/IP port on which the server listens for new connections ... by an icon in the Windows Tray. Right click the icon and use the context menu to manage the server
Tutorial
17

Step 2: Define a JPA Entity Class

. The next step is adding a context listener class that will manage a JPA's EntityManagerFactory representing the ObjectDB database.
JDO Doc
15

javax.jdo.JDOHelper

the current thread's context class loader to locate the configuration file resource(s). Get the anonymous ... /jdoconfig.xml", using the current thread's context class loader to locate the configuration file resource(s ... context class loader to locate the PersistenceManagerFactory class. Get a PersistenceManagerFactory
JDO Doc
15

javax.jdo.PersistenceManager

addInstanceLifecycleListener(InstanceLifecycleListener listener, Class... classes) Adds the listener instance to the list of lifecycle event listeners. Adds the listener instance to the list of lifecycle event listeners ... listenerInstance interface. Parameters: listener - the lifecycle listener classes - the classes
Manual
13

Working with JPA Entity Objects [2011-04-18]

. The Persistence Context The persistence context is the collection of all the managed objects of an EntityManager. If an entity object that has to be retrieved already exists in the persistence context ... context is to make sure that a database entity object is represented by no more than one in-memory entity
Manual
13

Working with JPA Entity Objects

. The Persistence Context The persistence context is the collection of all the managed objects of an EntityManager. If an entity object that has to be retrieved already exists in the persistence context ... context is to make sure that a database entity object is represented by no more than one in-memory entity
Issue
9

objectdb-2.6.9_06: Extended Persistence Context fails: 'Attempt to begin a new transaction when a transaction is active'

with extended Persistence Context? [EDIT: 2006-09-29 New improved version of test mini web app with test mode ... () and has an entity manager with an extended persistence context. The basic idea (which used to work fine in practice ... persistence context entity manager is: @Stateful public class ExtProjectBuilder extends