Re: [Jsynthlib-devel] incompatible Scene class

[Hiroo H. <hir...@co...>]

I came up with an solution for this.  By adding the following line onto
Scene.java, I can load old scene file.
    static final long serialVersionUID = -7048122592493606437L;

I found this by thinking how Patch file worked.  The signature of Patch
class also changed, but we can load old library files.  I don't really
understand how does this work.  But I guess (hope) this works because
the signature change is only changing Patch class to compatible IPatch
interface.

Let us know if you see any problem.

Hiroo> You made a change in Scene.java;
Hiroo>     private Patch patch;
Hiroo> into;
Hiroo>     private IPatch patch;
Hiroo> 
Hiroo> This change breaks Scene file compatibility.  Now JSynthLib in CVS head
Hiroo> cannot read Scene file which was created before the change.  This is bad.
Hiroo> 
Hiroo> To keep file compatibility we need to revert the change on Scene.java
Hiroo> and make a new Scene class (NScene ?) which uses IPatch so far.
Hiroo> 
Hiroo> As a long term solution we need define new file format.  One way is to
Hiroo> use Storable class.  Another way is XML base format as we discuss before.
-- 
Hiroo Hayashi