[Springframework-developer] massive backward incompatibility for Spring 2.0

[Eugene K. <eu...@pl...>]

Hi,

  I just dscovered some severe backward incompatibility in Spring 2.0.

  When using remoting, especially rmi or ejb remoting, all classes will 
be serialized before sent over the wire. Unfortunately that does not 
work if client and server are using different versions of Spring jars 
and if there are some Spring classes involved.

  The problem is that Spring does not specify serialVersionUID for 
serializable classes. That is most critical for ApplicationEvent class 
and all the exceptions. So, I'd suggest to use serialVersionUID's from 
Spring 1.2.8 to all serializable classes and from now on always 
explicitly specify that value.

  I've attached reports for Spring 1.2.8 and Spring 2.0

  regards,
  Eugene

PS: one could write a regression test for serialveruids using something 
like this:

        Class c = Class.forName(name);
        ObjectStreamClass objectstreamclass = ObjectStreamClass.lookup(c);
        long suid =objectstreamclass.getSerialVersionUID();
   ...