Hi everybody,

I'm working with a database model that has for each row the old style signature fields (insert & update user/date).

To handle that transparently I added a Component with the four fields to each entity. The responsability to populate these fields is left to an EventListener (PreInsert & PreUpdate).

As the EventListener has to be stateless, the username is stored in the http session.

My problem is how to get the username stored in the http session from the EventListener?

I tryed to make the EventListener statefull using a ThreadLocal to store the username at logon, but it's not the same thread as the one handling the request that is calling the listener.

Has someone any idea?

Thank you by advance.
Philippe

Finally I found a way turning the EventListener in stateful mode using the new spring 2.5 scoped bean feature.

The EventListener has now a String property to hold the username. For each new http session spring creates a new EventListener instance. The property can be set at logon time.

Then spring injects dynamically at runtime the correct EventListener instance bound to the http session into the sessionFactory.

Here is the spring xml config:

<bean id="signatureHandler" scope="session"
class="test.SignatureEntityListener">
<aop:scoped-proxy/>
</bean>

<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mappingResources">
<list>
...
</list>
</property>
<property name="eventListeners">
<map>
<entry>
<key>
<value>pre-insert</value>
</key>
<ref bean="signatureHandler" />
</entry>
<entry>
<key>
<value>pre-update</value>
</key>
<ref bean="signatureHandler" />
</entry>
</map>
</property>
<property name="hibernateProperties">
...
</property>
</bean>

That's it