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From Brett Porter <>
Subject Re: DB schema migration
Date Mon, 23 Apr 2007 07:22:24 GMT
This was one of the things I was going to try and have done before  
alpha-1 - I just forgot.

Erik - the problem in upgrading is the changes in private tables  
between versions of jpox that we hadn't given explicit names to. We'd  
probably appreciate most help in future proofing our jpox use a bit  
more in case it's internal schema changes again.

I already have the tools to do an xml export of the old tables, it  
just needs to somehow be set to run in dump mode using the old jpox,  
and import using the new one. I'll look at that during ApacheCon, I  
think. If anyone else wants to take the task while I'm on holidays,  
let me know... we should also make the tool work with 1.0.3 databases  
if possible.

This is definitely one for the release notes, btw. alpha-1 will not  
work with 1.0.3 (or earlier 1.1 snapshot) databases.

- Brett

On 22/04/2007, at 2:10 PM, Erik Bengtson wrote:

> If you guys need some tooling from JPOX, let me know and I could  
> plan to
> implement some kind of "export" to XML, and "import" from XML. In  
> between
> export/import you could apply Xqueries to transform data to match  
> the new
> schema
> Quoting Stephane Nicoll <>:
>> Hi,
>> I'm currently running a 1.1-SNAPSHOT from February which runs ok
>> except a few minor issues. I'd like to upgrade to 1.1 alpha 1 as soon
>> as it's out to provide feedback & co.
>> Last time I tried to upgrade, I had to revert because the model  
>> schema
>> has changed and it was really difficult to update my existing  
>> data. Is
>> there something scheduled for alpha1 regarding this (at least a  
>> manual
>> procedure to upgrade my schema if necessary).
>> Thanks,
>> St├ęphane

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