I'm trying to remote access an EntityQuery subclass that I've converted to a
SFSB. It was generated by seam-gen as a non-EJB subclass. I'm trying to use
the EJB in a remote client app (Eclipse RCP). Currently, the lookup works but
the bean won't cast properly due to some kind of serialVersionUID problem.
I've tried many different workarounds related to assigning the serialVersionUID
of the bean to either values in the error message, but it still fails (class
snippets and stack trace given below). I'm wondering if this has something to
do with Seam creating proxies for the bean.
And am I taking the wrong approach here? Is there an easier way to do this? I
hear rumors that RCP integration is in the plan, but I can't wait for that to
happen (although it would be awesome to be able to reference Seam components in
RCP instead of doing remote EJB lookup). Perhaps with some guidance, I could
write some Seam code that surface the remote components in RCP (but I don't
know where to start--any pointers welcome).
TIA, Clark
| @Name("demoStatesList")
| @Stateful
| public class DemoStatesList extends EntityQuery implements
DemoStatesListIntface, Serializable {
|
|
| private static final long serialVersionUID = -2164496320326661428L;
| ...
| <snip>
| --------------------------
| @Remote
| public interface DemoStatesListIntface {
|
| public abstract DemoStates getDemoStates();
|
| }
| --------------------------
| ######## doing lookup of: SeamGenTest2/DemoStatesList/remote
| 20:33:31,564 ERROR [SocketClientInvoker] Got marshalling exception, exiting
| java.io.InvalidClassException: org.jboss.ejb3.stateful.StatefulRemoteProxy;
local class incompatible: stream classdesc serialVersionUID =
-2164496320326661428, local class serialVersionUID = -8874087830926007682
| at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:519)
| at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1546)
| at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
| at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
| at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
| at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912)
| at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836)
| at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)
| at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
| at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
| at
org.jboss.aop.joinpoint.InvocationResponse.readExternal(InvocationResponse.java:107)
| at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1753)
| at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1711)
| at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
| at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912)
| at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836)
| at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)
| at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
| at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
| at
org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:128)
| at
org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:66)
| at
org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:279)
| 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)
| at
org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:61)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.aspects.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:48)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:61)
| at $Proxy0.createProxy(Unknown Source)
| at
org.jboss.ejb3.JndiProxyFactory.getObjectInstance(JndiProxyFactory.java:52)
| at
javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
| at
org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1131)
| at
org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1148)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:706)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:588)
| at javax.naming.InitialContext.lookup(InitialContext.java:351)
| at
edu.jhuapl.ermp.ServiceFactory.buildALocalFacade(ServiceFactory.java:129)
| at
edu.jhuapl.ermp.ServiceFactory.getDemoStatesList(ServiceFactory.java:115)
| at edu.jhuapl.ermp.ServiceFactory.main(ServiceFactory.java:153)
| javax.naming.NamingException: Could not dereference object [Root exception
is java.lang.reflect.UndeclaredThrowableException]
| at
org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1156)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:706)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:588)
| at javax.naming.InitialContext.lookup(InitialContext.java:351)
| at
edu.jhuapl.ermp.ServiceFactory.buildALocalFacade(ServiceFactory.java:129)
| at
edu.jhuapl.ermp.ServiceFactory.getDemoStatesList(ServiceFactory.java:115)
| at
edu.jhuapl.ermp.ServiceFactory.main(ServiceFactory.java:153)DemoStatesList not
found
|
| Caused by: java.lang.reflect.UndeclaredThrowableException
| at $Proxy0.createProxy(Unknown Source)
| at
org.jboss.ejb3.JndiProxyFactory.getObjectInstance(JndiProxyFactory.java:52)
| at
javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
| at
org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1131)
| at
org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1148)
| ... 6 more
| Caused by: java.rmi.MarshalException: Failed to communicate. Problem
during marshalling/unmarshalling; nested exception is:
| java.io.InvalidClassException:
org.jboss.ejb3.stateful.StatefulRemoteProxy; local class incompatible: stream
classdesc serialVersionUID = -2164496320326661428, local class serialVersionUID
= -8874087830926007682
| 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)
| at
org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:61)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.aspects.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:48)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:61)
| ... 11 more
| Caused by: java.io.InvalidClassException:
org.jboss.ejb3.stateful.StatefulRemoteProxy; local class incompatible: stream
classdesc serialVersionUID = -2164496320326661428, local class serialVersionUID
= -8874087830926007682
| at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:519)
| at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1546)
| at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
| at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
| at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
| at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912)
| at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836)
| at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)
| at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
| at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
| at
org.jboss.aop.joinpoint.InvocationResponse.readExternal(InvocationResponse.java:107)
| at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1753)
| at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1711)
| at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
| at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912)
| at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836)
| at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)
| at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
| at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
| at
org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:128)
| at
org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:66)
| at
org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:279)
| 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)
| at
org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:61)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at
org.jboss.aspects.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:48)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
| at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:61)
| at $Proxy0.createProxy(Unknown Source)
| at
org.jboss.ejb3.JndiProxyFactory.getObjectInstance(JndiProxyFactory.java:52)
| at
javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
| at
org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1131)
| at
org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1148)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:706)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:588)
| at javax.naming.InitialContext.lookup(InitialContext.java:351)
| at
edu.jhuapl.ermp.ServiceFactory.buildALocalFacade(ServiceFactory.java:129)
| at
edu.jhuapl.ermp.ServiceFactory.getDemoStatesList(ServiceFactory.java:115)
| at edu.jhuapl.ermp.ServiceFactory.main(ServiceFactory.java:153)
| at
org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:73)
| ... 15 more
| Exception in thread "main" java.lang.NullPointerException
| at edu.jhuapl.ermp.ServiceFactory.main(ServiceFactory.java:154)
|
View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4047971#4047971
Reply to the post :
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4047971
_______________________________________________
jboss-user mailing list
[email protected]
https://lists.jboss.org/mailman/listinfo/jboss-user
