Hi guys,
I have a problem with a training project using Struts² and Hibernate.
To encapsulate the crosscutting concern of Session and Transaction
handling of Hibernate, I
tried to write my own Interceptor for my Actions that touches my Service
layer.
The interceptor is very simple ... here is the code:
public class HibernateTransactionInterceptor implements Interceptor {
public void destroy() {
}
public void init() {
}
public String intercept(ActionInvocation arg0) throws Exception {
Session sess = DAOUtil.getSessionFactory().openSession();
Transaction tx = sess.beginTransaction();
tx.begin();
String result = arg0.invoke();
if (result.equals(ActionSupport.ERROR)) {
tx.rollback();
}
else {
tx.commit();
}
sess.close();
return result;
}
}
I registered this interceptor in my Struts² configuration and use it for
all my actions that touches my service layer.
But it seems that this interceptor is not called in the interceptor chain.
Here is the Struts² package definition:
<package name="myPackage" namespace="/" extends="struts-default">
<interceptors>
<interceptor name="transactionInterceptor"
class="org.gartenshop.interceptors.HibernateTransactionInterseptor"/>
</interceptors>
...
...
<action name="LoadArticleInformation"
class="example.actions.LoadArticleInformation">
<interceptor-ref name="transactionInterceptor"/>
<!-- we don't define a result here because the action is
handling the request directly-->
</action>
...
</package>
When I try to load an object from my database this way, I always get an
Exception from Hibernate with the message:
*"load is not valid without active transaction".*
In my opinion there is an active transaction bound to the Session
(because I opened it in the interceptor).
I use DAOUtil.getSessionFactory().getCurrentSession() to get the Session
object opened by the Interceptor.
Does anyone know where my fault is?
Kind regards and thanks ahead
Robert
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