Problem with CMR
Hi All,
I have two entity beans "LeagueEJB" and "TeamEJB" related with a 1..* CMR.
When I call the "LeagueEJB" findByPrimaryKey method from the session bean "RosterEJB" I get the following error:
javax.ejb.EJBException: java.util.ArrayList
at roster.RosterBean.getLeague(RosterBean.java:407)
at sun.reflect.GeneratedMethodAccessor41.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.ejb.StatefulSessionContainer$ContainerInterceptor.invoke(StatefulSessionContainer.java:817)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:130)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186)
at org.jboss.ejb.plugins.StatefulSessionInstanceInterceptor.invoke(StatefulSessionInstanceInterceptor.java:266)
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.LogInterceptor.invoke(LogInterceptor.java:203)
at org.jboss.ejb.StatefulSessionContainer.invoke(StatefulSessionContainer.java:380)
at org.jboss.ejb.Container.invoke(Container.java:712)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:517)
at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:381)
at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:536)
/************************************/
The code that calls the method is:
LocalLeague league = leagueHome.findByPrimaryKey(leagueId);
/************************************/
The declaration of the relationship is:
<ejb-relation>
<ejb-relation-name>League-Team</ejb-relation-name>
<ejb-relationship-role>
<ejb-relationship-role-name>LeagueEJB</ejb-relationship-role-name>
One
<relationship-role-source>
<ejb-name>LeagueEJB</ejb-name>
</relationship-role-source>
<cmr-field>
<cmr-field-name>teams</cmr-field-name>
<cmr-field-type>java.util.Collection</cmr-field-type>
</cmr-field>
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>TeamEJB</ejb-relationship-role-name>
Many
<cascade-delete />
<relationship-role-source>
<ejb-name>TeamEJB</ejb-name>
</relationship-role-source>
<cmr-field>
<cmr-field-name>league</cmr-field-name>
</cmr-field>
</ejb-relationship-role>
</ejb-relation>
/************************************/
When I remove the relation, the things work fine...
Does anybody knows what is happening?
Thanks,
Marcio
