Obtaining PersistenceManager from Session Bean in JBoss 3.0.4

Hi,
I'm attempting to use the JCA for JBoss with Kodo 2.4.0. The kodo.rar seems to deploy ok:
2002-12-18 11:19:43,640 INFO [com.solarmetric.kodo.impl.jdbc.ee.ManagedConnectionFactoryImpl.kodo] Bound connection factory for resource adapter 'KodoJDO' to JNDI name 'java:/kodo'
2002-12-18 11:19:43,640 INFO [org.jboss.resource.connectionmanager.LocalTxConnectionManager] Started
2002-12-18 11:19:43,640 INFO [org.jboss.deployment.MainDeployer] Deployed package: file:/C:/jboss-3.0.4_tomcat-4.1.12/server/default/deploy/kodo.rar
In my session bean, I access the PersistenceManager using the following code:
InitialContext context _ new InitialContext();
JDOConnectionFactory factory _ (JDOConnectionFactory)context.lookup("java:/kodo");
PersistenceManager pm _ (PersistenceManager)factory.getConnection();
The code generates a JDOFatalDataStoreException when I try to execute it:
Error in use of ManagedConnectionPool: matchManagedConnection failed with subject: null and ConnectionRequestInfo: [email protected]3be7ac; - nested throwable: (javax.resource.ResourceException: Error in use of ManagedConnectionPool: matchManagedConnection failed with subject: null and ConnectionRequestInfo: [email protected]3be7ac)
And when I execute it a second time around, it seems to retrieve the PersistenceManager ok, but when I try to invoke methods on it, I get an SQLException:
Connection is broken: Software caused connection abort: socket write error
at com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.newDataStoreId(JDBCStoreManager.java:464)
     at com.solarmetric.kodo.runtime.PersistenceManagerImpl.makePersistentFilter(PersistenceManagerImpl.java:1107)
     at com.solarmetric.kodo.runtime.PersistenceManagerImpl.makePersistent(PersistenceManagerImpl.java:1059)
     at org.aims.his.ejb.PatientBean.createPatient(PatientBean.java:117)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:660)
     at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186)
     at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:77)
     at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:107)
     at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:178)
     at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:60)
     at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:130)
     at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:204)
     ... 47 more
So...what did I miss? Could it be the configuration of my connection to the database in kodo-service.xml (see attached)? In the server log files I didn't see any of my connection properties.
Any help is appreciated.
Thanks,
Jeff

Ok, looks like it was the kodo-service.xml file. I removed the ConnectionFactoryName entry and most of the options were commented out which I didn't catch...
Thanks,
Jeff
"Jeff Carnegie" <[email protected]> wrote in message news:[email protected]...
Hi,
I'm attempting to use the JCA for JBoss with Kodo 2.4.0. The kodo.rar seems to deploy ok:
2002-12-18 11:19:43,640 INFO [com.solarmetric.kodo.impl.jdbc.ee.ManagedConnectionFactoryImpl.kodo] Bound connection factory for resource adapter 'KodoJDO' to JNDI name 'java:/kodo'
2002-12-18 11:19:43,640 INFO [org.jboss.resource.connectionmanager.LocalTxConnectionManager] Started
2002-12-18 11:19:43,640 INFO [org.jboss.deployment.MainDeployer] Deployed package: file:/C:/jboss-3.0.4_tomcat-4.1.12/server/default/deploy/kodo.rar
In my session bean, I access the PersistenceManager using the following code:
InitialContext context _ new InitialContext();
JDOConnectionFactory factory _ (JDOConnectionFactory)context.lookup("java:/kodo");
PersistenceManager pm _ (PersistenceManager)factory.getConnection();
The code generates a JDOFatalDataStoreException when I try to execute it:
Error in use of ManagedConnectionPool: matchManagedConnection failed with subject: null and ConnectionRequestInfo: [email protected]3be7ac; - nested throwable: (javax.resource.ResourceException: Error in use of ManagedConnectionPool: matchManagedConnection failed with subject: null and ConnectionRequestInfo: [email protected]3be7ac)
And when I execute it a second time around, it seems to retrieve the PersistenceManager ok, but when I try to invoke methods on it, I get an SQLException:
Connection is broken: Software caused connection abort: socket write error
at com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.newDataStoreId(JDBCStoreManager.java:464)
at com.solarmetric.kodo.runtime.PersistenceManagerImpl.makePersistentFilter(PersistenceManagerImpl.java:1107)
at com.solarmetric.kodo.runtime.PersistenceManagerImpl.makePersistent(PersistenceManagerImpl.java:1059)
at org.aims.his.ejb.PatientBean.createPatient(PatientBean.java:117)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:660)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:77)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:107)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:178)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:60)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:130)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:204)
... 47 more
So...what did I miss? Could it be the configuration of my connection to the database in kodo-service.xml (see attached)? In the server log files I didn't see any of my connection properties.
Any help is appreciated.
Thanks,
Jeff

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Thanks again to both for the replies. Here are my responses:
Yi Lin: Yes, I know that an entity bean would solve this problem, however it has been decided not to use entity beans so this is not my call (I think the reason entity beans are not allowed in this project is that they are considered risky: there are other applications that access the same database, so if the container caches entity bean data as you describe, then the users might get inconsistent results).
Gerard: Actually object B is the one that has the business logic and C is a peer object that only does database access and no calculaitons. For example B can be Customer, and C CustomerDB. This is why object B does not have any knowledge of datasources or connections. So my design does not appear to be that bad!
As far as the factory you propose is concerned, I cannot understand how this would solve my problem. In order to solve this situation the factory would need to be persistent, i.e. get created by the ejbCreate() method, and destroyed whenever the container decides to destroy the bean. There would be no point in object C creating the factory, as I would have the overhead of doing the JNDI lookup every time I create a C.
So the question remains the same: how would I pass a reference to the factory from A to C without making B aware of it?

Calling Data Control from Session bean

Is it possible to use workshop data control from with in Session bean.

If the client code is located in the same "deployment unit" (e.g. EAR
file) as the EJBs, then you can pass the data by reference.
Serialization is required when crossing between deployment units. This
is required to support redeployment.
Hyung-Jin Kim wrote:
I recently downloaded WL6.0 and I noticed that when a
session bean returns data to its client, the data is
always serialized back the client -- EVEN it the client
is on the same machine. Ideally, I would prefer that a
reference to the data simply be returned to the client.
Does the serialization occur because WL6.0 put session
beans in its own ClassLoader or does the serialization occur
because of the way WL6.0 compiles the RMI stubs? Thanks
for your response.
-hjk

NoSuchObjectException from Session bean wrapper

Hi,
I am getting the following exception when accessing a session bean.
The exception is thorwn from a method of a statful session bean. The lines before and after the particular line are exceuted properly
public void cloneBasket(eprcBasketSF pDestinationBkt) throws RemoteException{
pDestinationBkt.setIsJobValid(this.m_IsBktJobValid);
pDestinationBkt.setIsAppValid(this.m_IsBktAppValid);
pDestinationBkt.setIsSubValid(this.m_IsBktSubValid);
pDestinationBkt.setIsPOValid(this.m_IsBktPOValid);
pDestinationBkt.setIsEdaValid(this.m_IsBktEdaValid);
pDestinationBkt.setIsIdaValid(this.m_IsBktIdaValid);
//** Exception is thrown at this line only
pDestinationBkt.setBasketLines(this.m_bktLines);
pDestinationBkt.setDeletedBasketLines(cloneDeletedBasketLines());
java.rmi.NoSuchObjectException: Session has timed out
at com.evermind.server.ejb.StatefulSessionEJBObject.throwPassivisationEx
ception(.:215)
at eprcBasketSF_StatefulSessionBeanWrapper3.cloneBasket(eprcBasketSF_Sta
tefulSessionBeanWrapper3.java:469)
at com.comp.eProcurement.eprcCore.eprcBasketJBean.cloneBasket(eprcBaske
tJBean.java:58)
at com.comp.eProcurement.eprcCore.eprcBasketTemplateManager.retrieveBas
ketByKey(eprcBasketTemplateManager.java:1471)
at com.comp.eProcurement.eprcCore.eprcBasketTemplateManager.getCurrentB
asket(eprcBasketTemplateManager.java:598)
at com.comp.eProcurement.eprcCore.eprcEprocSession.passivate(eprcEprocS
ession.java:953)
We are using orion server 1.5.3. Can any body tell me what could be causing this problem.
Thanks in advance
karthi

Hi,
I got an exact same error. I'm using Oracle 9i App Server, but it's based on Orion server, which you're using.
When I try to use stateful session bean, I also got "Session has timed out" error at the exact same point (com.evermind.server.ejb.
StatefulSessionEJBObject.throwPassivisationException).
I have no clue, either. My session bean worked fine bofore, but after I updated records in the database, then something went wrong. First, I thought database connection problem or something, but it's definitely not.
If you find out the problem, please post it here or send me email below.
[email protected]
If I figure it out, I'll post it here, too.
thanks.
-tom

Working list from Session Bean

In a method of a session bean, I need to get the list of tasks of a user from the TaskManager service of BPEL. I can not find any sample in Web, so if anyone can help me, I appreciate it.
I am using the JDeveloper 10.1.3.1.

can u list the entire source for the method...

Calling a web service from Session bean

Hi Experts,
Can anybody help in calling a web serivce frm a session bean's business method??
Hw do we do that?
I have one requirement where i want to send emails to set of users for which i have email sending web service ready.. How can i call it thru a session bean's business method???
Pls help,
Regards,
Amey

Hi Amey,
This documents explains how to use an EJB as Web service endpoint: http://help.sap.com/saphelp_nwce10/helpdata/en/46/307a6c50094f09e10000000a114a6b/frameset.htm
I hope this helps.
Best regards,
Ekaterina

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