Base classes of Serialisable classes have to be serialisable, too!
Consider:
public abstract class Base {
private long id;
public long getId() { return id; }
public void setName(long id) { this.id=id; }
}
public class Person extends Base
implements Serializable {
private String name;
public String getName() { return name; }
public void setName(String name)
{ this.name=name; }
}
Now transferring Person as a parameter to or result of a standard GWT RPC call would result in id==0 at the receiving side no matter what value it had on the sending side.
This was rather surprising to me but simple to repair:
public abstract class Base
implements Serializable {
...
}
