I want to get the old values after a jdbc update ;
so I use the eventListerner to listern post-update event but the oldstates i get was always null;
why? my hibernate version is 3.2

this is my code:

public class MyListener extends DefaultLoadEventListener
2. implements PostUpdateEventListener {
3.
4. public void onPostUpdate(PostUpdateEvent event) {
5. System.out.println(event.getEntity().getClass().getName()+":更新完毕");
6. for (int i = 0; i < event.getState().length; i++) {
7. // old values
8. Object oldValue = event.getOldState()[i]; //why it always null!!!!!!
9. // new values
10. Object newValue = event.getState()[i];
11. //property name
12. String propertyName = event.getPersister().getPropertyNames()[i];
13. }
14. }
15. }


my config:
<bean id="sessionFactory"
2. class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
3. ...
4. <property name="eventListeners">
5. <map>
6. <entry key="post-update">
7. <ref bean="myListener" />
8. </entry>
9. </map>
10. </property>
11. ...
12. </bean>
<bean id="myListener" class="com.app.common.util.hibernateSupport.MyListener">


no matter the pre-update or post-update the oldSates was always null.
Could you please help me! Thanks very much!

hello

have you found any answer to your problems ?

Btw , i have this post... if you have any idea ... :)
https://forum.hibernate.org/viewtopic.php?f=1&t=1025393

Thanks