nl.knowledgeplaza.util.jpa
Class EntityManagerFinderSwing

java.lang.Object
  nl.knowledgeplaza.util.jpa.EntityManagerFinder
      nl.knowledgeplaza.util.jpa.EntityManagerFinderThread
          nl.knowledgeplaza.util.jpa.EntityManagerFinderSwing

public class EntityManagerFinderSwing
extends EntityManagerFinderThread

This is a combination of a focus based and thread based. First a check is done if there is a EM associated with this thread. If not and the current thread is the EDT, then a check is done if a EM is associated with the component that currently has the focus. If not, then its parent component is checked. This does require some special coding in the application, when using threads: final EntityManager lEntityManager = EntityManagerFinder.find(); new Thread( new Runnable() { public void run() { EntityManagerFinderSwing.associateWithCurrentThread(lEntityManager); //... SwingUtilities.invokeLater( new Runnable() { public void run() { EntityManagerFinderSwing.associateWithCurrentThread(lEntityManager); // ... EntityManagerFinderSwing.deassociateFromCurrentThread(); // reused threads need explicit deassociations } } ); //... }}).start();

Version:

$Revision: 1.6 $

Constructor Summary

EntityManagerFinderSwing()

Method Summary

static void	associate(Component c, javax.persistence.EntityManager em)
static void	deassociate(Component c)
static javax.persistence.EntityManager	getAssociation(Component c)
javax.persistence.EntityManager	getEntityManager(Object context)
static void	register()

Methods inherited from class nl.knowledgeplaza.util.jpa.EntityManagerFinderThread

associate, associateWithCurrentThread, deassociate, deassociateFromCurrentThread, runAssociatedWithCurrentThread

Methods inherited from class nl.knowledgeplaza.util.jpa.EntityManagerFinder

find, find, findEntityManager, getEMAssociation, getEMAssociation, getEntityManagerFinder, removeAssociation, removeEMAssociation, setEMAssociation, setEMAssociation, setEntityManagerFinder

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EntityManagerFinderSwing

public EntityManagerFinderSwing()

Method Detail

getEntityManager

public javax.persistence.EntityManager getEntityManager(Object context)

Overrides:

getEntityManager in class EntityManagerFinderThread

register

public static void register()

associate

public static void associate(Component c,
                             javax.persistence.EntityManager em)

Parameters:

c -

em -

deassociate

public static void deassociate(Component c)

Parameters:

c -

getAssociation

public static javax.persistence.EntityManager getAssociation(Component c)

Parameters:

c -

Returns: