From: Adam Bien <abien_at_adam-bien.com>
Date: Wed, 09 Aug 2006 13:05:45 +0200

I discussed the following idea already with craig at the JAOO 2005.

Problem:

If you detach a persistent entity send it to client, then back, the
"before image" is lost.
In this case you need a version number or timestamp. You can have a
problem, in case you are working with a legacy database - it is often
hard or not allowed to change the schema.

Now the following idea: why not send the before image together with the
entity?
As a improvement also only the where statement could be sent over the
wire. This should be sufficient to detect the collisions,

I'm not sure, whether this list is the right place to discuss the things
- but I think such a feature would be unique...

greetings,

adam

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