RE: Transaction across several different methods in Session beans

[Juan Lorandi (Chile)]

hi esteban...

have you tried holding on to a UserTransacion reference?
if you don't, the reference to the UserTransaction is gc'ed after the try
clause of the methods that look it up...

If you solve it, please post the list....

saludos

Juan Pablo

-----Original Message-----
From: Lopez Esteban [mailto:[EMAIL PROTECTED]]
Sent: Mi�rcoles, 13 de Diciembre de 2000 8:14
To: Orion-Interest
Subject: Transaction across several different methods in Session beans


Hi all,
I'm trying to use UserTransactions in a stateful session bean to associate
itself with a transaction across several diferent methods, but it does not
work. My code is:

Stateful Session Bean:
public class TransactionBean implements SessionBean
{
  private SessionContext ejbCtx;
   private Entity entityRole = null;
 
  public void setSessionContext(SessionContext context)
    throws RemoteException, EJBException
  {
      ejbCtx = context;
  }

  public void ejbActivate() throws RemoteException, EJBException
  {
  }

  public void ejbPassivate() throws RemoteException, EJBException
  {
  }

  public void ejbRemove() throws RemoteException, EJBException
  {
  }

  public void ejbCreate() throws CreateException, EJBException,
RemoteException
  {
  }


  public void createEntity(String id)
  {
    try
    {
      Context context = new InitialContext();
      EntityHome entityHome =
(EntityHome)PortableRemoteObject.narrow(context.lookup("java:comp/env/entity
"),
        EntityHome.class);
      ejbEntity = entityHome.create(id);
    }
    catch (Exception ne)
    {
      ejbEntity = null;
      ne.printStackTrace();
    }
  }

  public void setDescription(String description) throws RemoteException
  {
    if (ejbEntity == null)
    {
      throw(
        new RemoteException("Entity is null, use createEntity() first"));
    }
    try
    {
      ejbEntity.setDescription(description);
    }
    catch (RemoteException re)
    {
      re.printStackTrace();
    }
  }

  public void begin()
  {
    try
    {
      utx = ejbCtx.getUserTransaction().begin();
    }
    catch(Exception e)
    {
      e.printStackTrace();
    }
  }

  public void commit()
  {
    try
    {
      ejbCtx.getUserTransaction().commit();
    }
    catch(Exception e)
    {
      e.printStackTrace();
    }

  }

  public void rollback()
  {
    try
    {
      ejbCtx.getUserTransaction().rollback();
    }
    catch(Exception e)
    {
      e.printStackTrace();
    }
  }
}

and my client is:

public class TransactionTest
{
  public static void main(String[] args)
  {
    try
    {
      Context context = new InitialContext();
      TransactionHome home =
(TransactionHome)PortableRemoteObject.narrow(context.lookup("java:comp/env/t
ransaction"),
        TransactionHome.class);
      Transaction tx = home.create();
      tx.begin();
      tx.createEntity("tx entity");
      tx.setDescription("tx description");
      tx.commit();
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
  }
}

I'm using Orion 1.4.4 and Windows 98. I set
<transaction-type>Bean</transaction-type> in the ejb-jar.xml of Transaction
Bean and
                <container-transaction>
                        <description/>
                        <method>
                                <description/>
                                <ejb-name>entity</ejb-name>
                                <method-name>*</method-name>
                        </method>
                        <trans-attribute>Required</trans-attribute>
                </container-transaction>

for Entity bean.

When I try to use this I catch the folow exception:
java.lang.IllegalArgumentException: No active Transaction
        at
com.evermind.server.ApplicationServerTransactionManager.commit(JAX)
        at transaction.TransactionBean.commit(TransactionBean.java:127)
        at
Transaction_StatefulSessionBeanWrapper0.commit(Transaction_StatefulSessionBe
anWrapper0.java:190)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.evermind.server.rmi.bf.do(JAX)
        at com.evermind.util.f.run(JAX)

Any ideas.
Thanks, Esteban