> On 28 May 2015, at 18:18, PBKResearch <pe...@pbkresearch.co.uk> wrote: > > Hello > > I have found a way round this problem, but it seems messy and uncomfortable, > so I thought I should ask what is the right way to do it. > > I have just changed from using Moose 5.0 (Pharo 3.0, update: #30862) to Moose > 5.1 (Pharo 4.0, update: #40613). I had a rather complex dictionary structure > in a Playground in 5.0, which I wanted to reproduce exactly in the 5.1 image. > Looking around, Fuel looked like the obvious tool to save and restore the > structure. It saved OK in 5.0, but when I tried to re-materialize it in 5.1 I > got an error message: ‘FLBadVersion: Materialization error. Unexpected stream > vers’ (can’t see the rest of the message). I could see from the debugger > output that Fuel was looking for version 194 and seeing 193. Using a brute > force approach, I hacked FLSerializer class >> currentVersion in the Moose > 5.0 image to return 194 instead 193, then tried again, and of course > everything worked OK. > > My question is what should I have done? How can I move data from one image to > another of a later version? If Fuel has no backward compatibility, is there > another tool I can use?
Depending on what the data is, STON can be quite useful. https://ci.inria.fr/pharo-contribution/job/EnterprisePharoBook/lastSuccessfulBuild/artifact/STON/STON.html > Thanks for any advice > > Peter Kenny
