Re: binnding RMIDispatcher to client

Posted by Brett on Jul 06, 2006; 7:17am
URL: http://ofbiz.116.s1.nabble.com/binnding-RMIDispatcher-to-client-tp140489p140491.html

Raj,

Yes, in theory you should be able to access ofbiz as a backend service
provider from any Java client that can make an RMI call via the
RMIDispatcher.  We use the RMIDispatcher to run our tests and
utilities.

That said you would have to consider a few things.

1. All services would have to be set as export="true"

2. Most ofbiz services require authentication which it gets by reading
session variables in the container.  If you use RMI those sessions
will not be created.  You would have to pass this information in with
the call using the "userLogin" parameter.

3. Some objects don't serialize correctly from client to server.  For
example, you can pass a GenericValue between an RMI client and server
but if a method in the object refers to the entity engine
configuration the object will fail on the client.  For these types of
problems we usually just pass simple data types that just contain
data.

4. RMI protocols are usually only support within an Intranet type network.

Hope that helps.

Brett


On 7/5/06, Raj <[hidden email]> wrote:

> Yes Brett,I also did it ,how to solve this problem ,and one more thing Brett
> If I get dispatcher from RMI Client .is it possible to bring ofbiz as a
> backend for any external application
>
> -----Original Message-----
> From: Brett Palmer [mailto:[hidden email]]
> Sent: Thursday, July 06, 2006 10:55 AM
> To: [hidden email]; [hidden email]
> Subject: Re: binnding RMIDispatcher to client
>
> Raj,
>
> You will also get this error if you have compiled the server and
> client differently.
>
> For example, if I build ofbiz with ant and startup the server as
> normal and then try to connect to server via RMI from a client running
> in Eclipse I will get this error.
>
>
> Brett
>
> On 7/5/06, Raj <[hidden email]> wrote:
> > Hi all
> >
> > I invoke the ofbiz RMIDispatcher from client to ofbiz server .I also
> change
> > latest ofbiz-service-rmi.jar from server to client.but I can't get through
> > it   ,please any body help me.here I listed log file
> >
> >
> >
> >
> >
> > java.rmi.UnmarshalException: error unmarshalling return; nested exception
> > is:
> >
> >       java.io.InvalidClassException:
> > org.ofbiz.service.rmi.socket.zip.CompressionClientSocketFactory; local
> class
> > incompatible: stream classdesc serialVersionUID = -7751495693367440749,
> > local class serialVersionUID = 830610525710844423
> >
> >       at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
> >
> >       at java.rmi.Naming.lookup(Naming.java:84)
> >
> >       at src.ExampleRemoteClient.<init>(ExampleRemoteClient.java:36)
> >
> >       at src.ExampleRemoteClient.main(ExampleRemoteClient.java:55)
> >
> > Caused by: java.io.InvalidClassException:
> > org.ofbiz.service.rmi.socket.zip.CompressionClientSocketFactory; local
> class
> > incompatible: stream classdesc serialVersionUID = -7751495693367440749,
> > local class serialVersionUID = 830610525710844423
> >
> >       at
> java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:463)
> >
> >       at
> > java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1521)
> >
> >       at
> > java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1435)
> >
> >       at
> > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1626)
> >
> >       at
> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
> >
> >       at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
> >
> >       at sun.rmi.transport.tcp.TCPEndpoint.read(TCPEndpoint.java:504)
> >
> >       at sun.rmi.transport.LiveRef.read(LiveRef.java:254)
> >
> >       at sun.rmi.server.UnicastRef2.readExternal(UnicastRef2.java:54)
> >
> >       at java.rmi.server.RemoteObject.readObject(RemoteObject.java:420)
> >
> >       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
> > java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:838)
> >
> >       at
> > java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)
> >
> >       at
> > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)
> >
> >       at
> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
> >
> >       at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
> >
> >       ... 4 more
> >
> >
> >
> > Regards
> >
> > P.Raj
> >
> >
> >
>
>