I'm getting a MarshalException on a client application (Eclipse RCP).
I have a bidirectional relationship Employee-Supervisor, both of the same class.
My client app can retrieve a Supervisor entity, including the subordinate
employees, without a problem. However, if I attempt to retrieve an employee
that has a supervisor, I get a MarshalException on the client side:
java.rmi.MarshalException: Failed to communicate. Problem during
marshalling/unmarshalling; nested exception is:
| java.lang.NullPointerException
| at
org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:306)
| at
org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:143)
| at org.jboss.remoting.Client.invoke(Client.java:525)
| at org.jboss.remoting.Client.invoke(Client.java:488)
|
I'm using JBoss 4.0.5.GA. There are no Exceptions on the server side.
I'm including the code that defines the relationship (I do initialize the
subordinate set on the server before sending the entity to the client):
| @OneToMany(mappedBy = "supervisor", fetch=FetchType.LAZY )
| public Set<Employee> getSubordinateSet(){
| return subordinateSet;
| }
|
| @ManyToOne(fetch=FetchType.EAGER)
| @JoinColumn(name = "supervisor")
| public Employee getSupervisor(){
| return supervisor;
| }
|
Any suggestions/guidance will be greatly appreciated...
Octavio
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